CESAR-4: QUAPACT (Quality Assurance of PTR based trace gas measurements at the ACTRIS - CESAR observatory) involved different types of PTR MS instruments from FZ Jülich.

CESAR-5: PRT3ACO (Use of a novel PTR3 instrument for comparison with other PTR based trace gas measurements at the ACTRIS - CESAR observatory) contributed with a PTR3 instrument for which IONICON, the leading manufacturer of PTR-MS instruments, is the only supplier, from a group from Harvard, US.

CESAR-7 PICAB (PTR-MS Intercomparison campaign at Cabauw) involved an PTR-MS instrument from the University of Birmingham.

CESAR-6,8 and 9 were not eligible as linked to WP3 activities.

CESAR-10: AVVICATO (Application of a VOCUS VOC Integrated Calibration system at a Tower Observatory) involved an SME (Aerodyne Research Inc., USA) using their automated PTR-MS calibration and background system in cooperation with other PTR instruments. The constructed PTR time-of-flight mass spectrometer (PTR-ToFMS) has a unique ionization source compared to other instruments in attendance, and has has never been quantitatively evaluated against other PTR instruments.

## 5.10 TROPOS Research Station Melpitz, MEL (TROPOS)

Four TNA projects have been carried out at the TROPOS Research Station Melpitz. 67 RWD were provided in total which is less than initially planned.

1) TNA "Evaluate CALIPSO aerosol Classification product, using Airborne and ground-based IN-situ instrumentation" (ECA-IN), 7 access days, aimed at a validation exercise of CALIPSO aerosol classification product during the satellite overpass close to the TROPOS Research Station Melpitz. A direct comparison with corresponding retrievals from airborne in-situ measurements acquired during the Melpitz Column Experiment was done. For the used application, it has been shown that it is feasible to evaluate space-borne profiling measurements and aerosol typing.

2) IMAC project (30 access days): The project objectives were achieved through comprehensive intercomparison experiments with existing, well-characterized techniques for measuring rBC mass concentrations and absorption coefficients. The following instruments were included in the experiments: a single particle soot photometer (SP2 DMT), a seven-wavelength aethalometer (AE33, Magee Scientific), a multi-angle absorption photometer (MAAP, ThermoFisher Scientific), an integrating nephelometer (Aurora 4000, Ecotech) and cavity attenuated phase shift monitors with and without integrating nephelometers operating at three different wavelengths (CAPS PMex and PMssa monitors, Aerodyne). The project was split into two components. The first component was a series of laboratory tests and calibrations conducted at the TROPOS institute in Leipzig from 23 - 29 January 2017. Following this, field measurements were conducted at the Melpitz research station from 1 February to 15 March 2017.

3) The MARLO project (18 access days) aimed at comparing HONO-measurements with MARGA and LOPAP at TROPOS research-site Melpitz. The measurement site was chosen because of the different air mass influences.

4) The objective of CHARON (12 access days) was to field test and to validate the new CHARON PTR-TOF 6000 X2 instrument. This instrument is IONICON's (Austrian SME)
CESAR-4: QUAPACT (Quality Assurance of PTR based trace gas measurements at the ACTRIS - CESAR observatory) involved different types of PTR MS instruments from FZ Jülich.

CESAR-5: PRT3ACO (Use of a novel PTR3 instrument for comparison with other PTR based trace gas measurements at the ACTRIS - CESAR observatory) contributed with a PTR3 instrument for which IONICON, the leading manufacturer of PTR-MS instruments, is the only supplier, from a group from Harvard, US.

CESAR-7 PICAB (PTR-MS Intercomparison campaign at Cabauw) involved an PTR-MS instrument from the University of Birmingham.

CESAR-6,8 and 9 were not eligible as linked to WP3 activities.

CESAR-10: AVVICATO (Application of a VOCUS VOC Integrated Calibration system at a Tower Observatory) involved an SME (Aerodyne Research Inc., USA) using their automated PTR-MS calibration and background system in cooperation with other PTR instruments. The constructed PTR time-of-flight mass spectrometer (PTR-ToFMS) has a unique ionization source compared to other instruments in attendance, and has has never been quantitatively evaluated against other PTR instruments.

**5.10 TROPOS Research Station Melpitz, MEL (TROPOS)**

Four TNA projects have been carried out at the TROPOS Research Station Melpitz. 67 RWD were provided in total which is less than initially planned.

1) TNA "Evaluate CALIPSO aerosol Classification product, using Airborne and ground-based IN-situ instrumentation" (ECA-IN), 7 access days, aimed at a validation exercise of CALIPSO aerosol classification product during the satellite overpass close to the TROPOS Research Station Melpitz. A direct comparison with corresponding retrievals from airborne in-situ measurements acquired during the Melpitz Column Experiment was done. For the used application, it has been shown that it is feasible to evaluate space-borne profiling measurements and aerosol typing.

2) IMAC project (30 access days): The project objectives were achieved through comprehensive intercomparison experiments with existing, well-characterized techniques for measuring rBC mass concentrations and absorption coefficients. The following instruments were included in the experiments: a single particle soot photometer (SP2 DMT), a seven-wavelength aethalometer (AE33, Magee Scientific), a multi-angle absorption photometer (MAAP, ThermoFisher Scientific), an integrating nephelometer (Aurora 4000, Ecotech) and cavity attenuated phase shift monitors with and without integrating nephelometers operating at three different wavelengths (CAPS PMex and PMssa monitors, Aerodyne). The project was split into two components. The first component was a series of laboratory tests and calibrations conducted at the TROPOS institute in Leipzig from 23 - 29 January 2017. Following this, field measurements were conducted at the Melpitz research station from 1 February to 15 March 2017.

3) The MARLO project (18 access days) aimed at comparing HONO-measurements with MARGA and LOPAP at TROPOS research-site Melpitz. The measurement site was chosen because of the different air mass influences.

4) The objective of CHARON (12 access days) was to field test and to validate the new CHARON PTR-TOF 6000 X2 instrument. This instrument is IONICON's (Austrian SME)
current flagship, offering a variety of new features for the user. The instrument worked flawlessly and stably for 3 weeks (including 10 days of unattended operation) between 11 February and 1st March 2019. The data is still currently being reduced and analysed.

## 5.11 Finokalia Atmospheric Observatory, FKL (NOA)

In total 13 TNA projects have been carried out at Finokalia during the whole project accounting for 209 RWD.

1) TNA BL-SMOG (11 access days) performed boundary layer aerosol profiling starting as close to near-surface as possible, by using the NARLa lidar receiver collocated with the NOA-PollyXT lidar. Participation in the JRA1 campaign gave the opportunity to perform spectrally dependent measurements to study absorbing aerosol smog layers that frequently occur in lowermost boundary layer over Athens during the winter season.

2) The objective of TNA LAMP (4 access days) was to estimate the ABL depth to provide NRT information on the distribution of aerosol particles and wind profiles. The ABL was be compared with the corresponding retrievals of the multi-wavelength aerosol Raman lidar PollyXT-NOA. Primary goal of the study is to demonstrate if a reliable monitoring of the boundary layer top, under different aerosol and meteorological conditions, is possible.

3) TNA DAVP-RS (21 access days) aims at validating AAI values with combined remote sensing and near surface in-situ measurements of the Athens campaign. Although it is quite difficult to use passive remote sensing data alone for determining aerosol properties, there is no ground based active remote sensing device in Turkey operating for scientific purposes currently. This project was a good starting point to develop methods for implementing passive remote sensing data to pollution studies in Turkey.

4) During FAME-16 (24 access days), portable smog chambers have been deployed for the first time to our knowledge in the field. These chambers easy to assembly and handle, can be built at a very reasonable price and allow to expose real-time atmospheric chemical substances to variable conditions to address scientifically important issues. For instance when aged organic aerosol (OA) are exposed to additional OH the following questions can be answered? Does it get more oxidized? Does it start fragmenting with mass decreases?

5) During BIOMEDS (12 access days), state-of-the-art sampling techniques and protocols developed and combined with the speciation of biological atmospheric particles (PBAPs) by flow cytometry (FCM) were deployed for the first time to our knowledge in Europe to identify and quantify speciated bioaerosol populations.

In the frame of JRA1 activities an experimental campaign focusing on desert dust microphysical characterization from remote sensing was performed from 1st to 30th of April 2017 at the observatory of Finokalia. Specifically, the aim of the campaign is to validate the remote sensing retrievals against surface and airborne in-situ measurements. During this campaign advanced inversion techniques developed in the framework of ACTRIS, focusing on aerosol absorption to fulfill the objectives of the ACTRIS JRA1 activity (“Improving the accuracy of aerosol light absorption determinations”) were deployed. During this campaign eight TNAs were performed at Finokalia: ABISI, DUSTSONDE, VASAI, CHDLDC, POLLUX, ICARUS DREAM,
current flagship, offering a variety of new features for the user. The instrument worked flawlessly and stably for 3 weeks (including 10 days of unattended operation) between 11 February and 1st March 2019. The data is still currently being reduced and analysed.

## 5.11 Finokalia Atmospheric Observatory, FKL (NOA)

In total 13 TNA projects have been carried out at Finokalia during the whole project accounting for 209 RWD.

1) TNA BL-SMOG (11 access days) performed boundary layer aerosol profiling starting as close to near-surface as possible, by using the NARLa lidar receiver collocated with the NOA-PollyXT lidar. Participation in the JRA1 campaign gave the opportunity to perform spectrally dependent measurements to study absorbing aerosol smog layers that frequently occur in lowermost boundary layer over Athens during the winter season.

2) The objective of TNA LAMP (4 access days) was to estimate the ABL depth to provide NRT information on the distribution of aerosol particles and wind profiles. The ABL was be compared with the corresponding retrievals of the multi-wavelength aerosol Raman lidar PollyXT-NOA. Primary goal of the study is to demonstrate if a reliable monitoring of the boundary layer top, under different aerosol and meteorological conditions, is possible.

3) TNA DAVP-RS (21 access days) aims at validating AAI values with combined remote sensing and near surface in-situ measurements of the Athens campaign. Although it is quite difficult to use passive remote sensing data alone for determining aerosol properties, there is no ground based active remote sensing device in Turkey operating for scientific purposes currently. This project was a good starting point to develop methods for implementing passive remote sensing data to pollution studies in Turkey.

4) During FAME-16 (24 access days), portable smog chambers have been deployed for the first time to our knowledge in the field. These chambers easy to assembly and handle, can be built at a very reasonable price and allow to expose real-time atmospheric chemical substances to variable conditions to address scientifically important issues. For instance when aged organic aerosol (OA) are exposed to additional OH the following questions can be answered? Does it get more oxidized? Does it start fragmenting with mass decreases?

5) During BIOMEDS (12 access days), state-of-the-art sampling techniques and protocols developed and combined with the speciation of biological atmospheric particles (PBAPs) by flow cytometry (FCM) were deployed for the first time to our knowledge in Europe to identify and quantify speciated bioaerosol populations.

In the frame of JRA1 activities an experimental campaign focusing on desert dust microphysical characterization from remote sensing was performed from 1st to 30th of April 2017 at the observatory of Finokalia. Specifically, the aim of the campaign is to validate the remote sensing retrievals against surface and airborne in-situ measurements. During this campaign advanced inversion techniques developed in the framework of ACTRIS, focusing on aerosol absorption to fulfill the objectives of the ACTRIS JRA1 activity (“Improving the accuracy of aerosol light absorption determinations”) were deployed. During this campaign eight TNAs were performed at Finokalia: ABISI, DUSTSONDE, VASAI, CHDLDC, POLLUX, ICARUS DREAM,
GLAM and ITALI) deploying numerous state of the art instruments to study the absorbing properties of dust and check the validity of inversion algorithms such as GARRLiC.

6) ABISI campaign (24 access days) was held at the FKL site during April 2017 and during this campaign measurements of a PSR instrument that has been developed and calibrated at the PMOD/WRC were analysed. For the ABISI PSR measurements were used to retrieve Aerosol Optical Depth (AOD) and Single Scattering Albedo (SSA).

7) The aim of DUSTSONDE (26 access days) was to test observations with the Universal Cloud and Aerosol Sounding System (UCASS) against independent data from airborne in-situ measurements with research aircraft and findings of the advanced microphysical aerosol retrievals (TiARA, LIRIC and GARRLiC) that have been developed in the framework of ACTRIS-1.

8) The aim of VASAI (21 access days) was the validation of Skynet Aerosol Inversions in comparison to other ground based and airborne retrievals.

9) The focus of the POLLUX (21 access days) was the retrieval of parameters of mineral dust microphysical parameters, i.e. particles of non-spherical shape which can be characterized in a reliable way if only lidar data, e.g. 3 backscatter coefficients (measured at 355, 532, and 1064 nm) and 2 extinction coefficients (355 and 532 nm), commonly denoted as “3+2”, and up to linear three depolarization ratios (355, 532, and 1064 nm) are used as during the JRA1 campaign performed at Finokalia.

10) The scientific objective of CHDLDC (4 access days) was to characterize the depolarization channel performance of Halo Photonics Stream Line Doppler lidar by comparison to observations from co-located calibrated multi-wavelength aerosol lidar.

11) The objectives of the ICARUS DREAM (14 access days) were to use the DREAM model products along with the ACTRIS in-situ and remote sensing measurements to improve knowledge on the cold cloud-aerosol interactions.

12) The objective of the GLAM campaign (9 access days) was the evaluation of the GARRLiC retrievals with high-quality airborne and in-situ measurements of aerosol absorption performed during the campaign at Finokalia.

13) The ITALI project (18 access days) aimed at investigating the Twilight zone between Aerosols and clouds using microwave radiometry and multiwavelegth Lidar data. In order to characterize the twilight zone, a synergy of active and passive remote sensing instrumentation has been used to find evidence of the presence of liquid water in visible clear skies, near clouds or in broken clouds.

## 5.12 Košetice-Křešín u Pacova, KOS (CHMI, ICPF, CVGZ)

During the whole project, 6 projects were hosted at Kosetice accounting for 145 access days.
GLAM and ITALI) deploying numerous state of the art instruments to study the absorbing properties of dust and check the validity of inversion algorithms such as GARRLiC.

6) ABISI campaign (24 access days) was held at the FKL site during April 2017 and during this campaign measurements of a PSR instrument that has been developed and calibrated at the PMOD/WRC were analysed. For the ABISI PSR measurements were used to retrieve Aerosol Optical Depth (AOD) and Single Scattering Albedo (SSA).

7) The aim of DUSTSONDE (26 access days) was to test observations with the Universal Cloud and Aerosol Sounding System (UCASS) against independent data from airborne in-situ measurements with research aircraft and findings of the advanced microphysical aerosol retrievals (TiARA, LIRIC and GARRLiC) that have been developed in the framework of ACTRIS-1.

8) The aim of VASAI (21 access days) was the validation of Skynet Aerosol Inversions in comparison to other ground based and airborne retrievals.

9) The focus of the POLLUX (21 access days) was the retrieval of parameters of mineral dust microphysical parameters, i.e. particles of non-spherical shape which can be characterized in a reliable way if only lidar data, e.g. 3 backscatter coefficients (measured at 355, 532, and 1064 nm) and 2 extinction coefficients (355 and 532 nm), commonly denoted as “3+2”, and up to linear three depolarization ratios (355, 532, and 1064 nm) are used as during the JRA1 campaign performed at Finokalia.

10) The scientific objective of CHDLDC (4 access days) was to characterize the depolarization channel performance of Halo Photonics Stream Line Doppler lidar by comparison to observations from co-located calibrated multi-wavelength aerosol lidar.

11) The objectives of the ICARUS DREAM (14 access days) were to use the DREAM model products along with the ACTRIS in-situ and remote sensing measurements to improve knowledge on the cold cloud-aerosol interactions.

12) The objective of the GLAM campaign (9 access days) was the evaluation of the GARRLiC retrievals with high-quality airborne and in-situ measurements of aerosol absorption performed during the campaign at Finokalia.

13) The ITALI project (18 access days) aimed at investigating the Twilight zone between Aerosols and clouds using microwave radiometry and multiwavelegth Lidar data. In order to characterize the twilight zone, a synergy of active and passive remote sensing instrumentation has been used to find evidence of the presence of liquid water in visible clear skies, near clouds or in broken clouds.

## 5.12 Košetice-Křešín u Pacova, KOS (CHMI, ICPF, CVGZ)

During the whole project, 6 projects were hosted at Kosetice accounting for 145 access days.
1) *Two HEights Black Carbon and SIZE distributions measurements (THE_BC_SIZE), 19-27.6.2017, 2 persons, RWDs: 18*

TNA was focused on studying variations of BC concentrations and aerosol number size distributions at two heights (ground level and 230 m above the ground level) in Kosetice, a rural background site from ACTRIS network. Comparing BC ground-based and tower-based data give indications on BC atmospheric pathways, whereas possible relationships between BC concentrations and number particles concentrations at selected sizes, could give some indication on the “freshness” of BC particles in this rural site. In addition, ground-based radiometric measurements of direct solar irradiance, for the first time performed at this background site, will give information on atmospheric aerosol radiative and the application of a suitable technique to these radiometric data will highlight the contribution of aerosol components to the total aerosol optical depth. Kosetice Observatory was chosen as the most continental site in ACTRIS network and far from strong sources of pollution. 270 m tall tower enable to study quantification and localization of GHG sources and sinks. It represents a good site to measure, for the first time in such a site, variations of BC concentrations at two heights (ground level and 230 m), it’s scaling with height and its relationship with aerosol sizes.

Data discussed in a very preliminary way represent a starting point for a much more effective analysis. Co-located BC measurements suggest a general agreement between AE33 and AE31, even if should be understood how humidity affect BC data. Moreover, it is necessary to analyze the whole BC data-sets and the two data-sets of SMPS size distributions, to compare them and to verify possible correlations between BC concentrations and number concentrations at different sizes. Finally, radiometric ancillary measurements need to be analyzed and integrated with the two-quote data.

2) *Introduction of the sampling capacities in Košetice observatory, possible analytical determination of POPs and monitoring data processing (POPs TRAIN), 29.6.2017, 30 persons, RWDs: 30*

The week-long International Summer School of Toxic Compounds in the Environment organized by the Research Infrastructure RECETOX and The Stockholm Convention Regional Centre for Capacity Building and the Transfer of Technology (SCRC) helps build global capacities for the environmental chemistry and ecotoxicology, including aspects of analytical and process chemistry, long-range transport, fate and effects, and provides a hands-on experience with the chemical and toxicological tests designed to answer specific environmental problems. The study plan include a field trip to the Košetice observatory, mutlimaterix sampling site, serving as the complex background station for the Central and Eastern Europe under the Global Monitoring Plan, in the EMEP as well as providing data in other long-term monitoring activities in relation to air, water, soil, deposition and other environmental and biotic matrices. The international summer school is organized once per year and ask capacity of ACTRIS research infrastructure for 1- day intensive expert training for group of participants (include post doc and young researcher). Košetice observatory is a unique sampling site with a long term integrated environmental monitoring.

3) *Introduction of the sampling capacities in Košetice observatory, possible analytical determination of POPs and monitoring data processing (POPs monitoring), 19.6.2018, 35 persons, RWDs: 35*

The week-long International Summer School of Toxic Compounds in the Environment organized by the Research Infrastructure RECETOX helps build global capacities for the
1) *Two HEights Black Carbon and SIZE distributions measurements (THE_BC_SIZE), 19-27.6.2017, 2 persons, RWDs: 18*

TNA was focused on studying variations of BC concentrations and aerosol number size distributions at two heights (ground level and 230 m above the ground level) in Kosetice, a rural background site from ACTRIS network. Comparing BC ground-based and tower-based data give indications on BC atmospheric pathways, whereas possible relationships between BC concentrations and number particles concentrations at selected sizes, could give some indication on the “freshness” of BC particles in this rural site. In addition, ground-based radiometric measurements of direct solar irradiance, for the first time performed at this background site, will give information on atmospheric aerosol radiative and the application of a suitable technique to these radiometric data will highlight the contribution of aerosol components to the total aerosol optical depth. Kosetice Observatory was chosen as the most continental site in ACTRIS network and far from strong sources of pollution. 270 m tall tower enable to study quantification and localization of GHG sources and sinks. It represents a good site to measure, for the first time in such a site, variations of BC concentrations at two heights (ground level and 230 m), it’s scaling with height and its relationship with aerosol sizes.

Data discussed in a very preliminary way represent a starting point for a much more effective analysis. Co-located BC measurements suggest a general agreement between AE33 and AE31, even if should be understood how humidity affect BC data. Moreover, it is necessary to analyze the whole BC data-sets and the two data-sets of SMPS size distributions, to compare them and to verify possible correlations between BC concentrations and number concentrations at different sizes. Finally, radiometric ancillary measurements need to be analyzed and integrated with the two-quote data.

2) *Introduction of the sampling capacities in Košetice observatory, possible analytical determination of POPs and monitoring data processing (POPs TRAIN), 29.6.2017, 30 persons, RWDs: 30*

The week-long International Summer School of Toxic Compounds in the Environment organized by the Research Infrastructure RECETOX and The Stockholm Convention Regional Centre for Capacity Building and the Transfer of Technology (SCRC) helps build global capacities for the environmental chemistry and ecotoxicology, including aspects of analytical and process chemistry, long-range transport, fate and effects, and provides a hands-on experience with the chemical and toxicological tests designed to answer specific environmental problems. The study plan include a field trip to the Košetice observatory, mutlimaterix sampling site, serving as the complex background station for the Central and Eastern Europe under the Global Monitoring Plan, in the EMEP as well as providing data in other long-term monitoring activities in relation to air, water, soil, deposition and other environmental and biotic matrices. The international summer school is organized once per year and ask capacity of ACTRIS research infrastructure for 1- day intensive expert training for group of participants (include post doc and young researcher). Košetice observatory is a unique sampling site with a long term integrated environmental monitoring.

3) *Introduction of the sampling capacities in Košetice observatory, possible analytical determination of POPs and monitoring data processing (POPs monitoring), 19.6.2018, 35 persons, RWDs: 35*

The week-long International Summer School of Toxic Compounds in the Environment organized by the Research Infrastructure RECETOX helps build global capacities for the
environmental chemistry and ecotoxicology, including aspects of analytical and process chemistry (sampling and analytical techniques), long-range transport, fate and effects (sources, levels, transformations, toxic and ecotoxic effects on biota, biotests and biomonitoring), risk assessment, data analysis and modelling including GIS, and provides a hands-on experience with the chemical and toxicological tests designed to answer specific environmental problems. The special topic of this year was Smart and Healthy Cities. The study plan include a field trip to the National Atmospheric observatory Košetice, mutlimaterix sampling site, serving as the complex background station for the Central and Eastern Europe under the Global Monitoring Plan, EMEP (Cooperative Programme for Monitoring and Evaluation of the Long-Range Transmissions of Air Pollutants in Europe) as well as providing data in other long-term monitoring activities in relation to air, water, soil, deposition and other environmental and biotic matrices. This part of Summer School was led and organized by prof. Martin Scheringer from Insitute for Chemical and Bioengineering ETH Zurich. The international summer school is organized once per year and ask capacity of ACTRIS research infrastructure for 1- day intensive expert training for group of participants (include post doc).

The plan for 1-day intensive training was completely fulfilled. The training module attended 35 participants from 21 countries (Armenia, Austria, Belarus, Bosnia and Herzegovina, Denmark, France, Costa Rica, Chile, Germany, Hungary, Italy, Lithuania, Malaysia, the Netherlands, Nigeria, Norway, Poland, Russia, Serbia, Ukraine, USA). Passive and active air samplers, sampling of POPs in ambient air, long-term monitoring of POPs in ambient air and atmospheric deposition, integrated monitoring of POPs in ambient air, atmospheric deposition, surface water, sediment, soil, needles, and lichen, active and passive water samplers, atmospheric deposition samplers, detailed studies of the POPs distribution among the size segregated atmospheric aerosols and the gas phase and the impact on their lifetime, long-range transport and related health risks and studies focused on POPs scavenging efficiency of dry and wet deposition processes and application of new knowledge in model development and validation were the key activities of training in observatory and were introduced and/or demonstrated to participants. Available capacity, services and instruments of ACTRIS research infrastructure in the field of air and water monitoring of POPs at Kosetice sampling site were introduced.

4) *Supersite measurements for research and modelling (REACHMOND).* 24-27.9.2018. 10 persons, RWDs: 40

The main goal of the visit was educational in order to familiarize with the established EU environmental research infrastructure ACTRIS. As a new EU member state Croatia is interested in focused training and transfer of knowledge with respect to development and utilisation of scientific monitoring infrastructure and data. Introduction of the sampling capacities in Košetice observatory and monitoring data processing enabled Croatian scientists to learn about multiple aspects of planning, establishing and implementation of scientific monitoring, including its operational and financial sustainability. The second element of the project was to learn about the data and its use in research projects, models' evaluation as well as for regulatory purposes. Specifically, interest was focused on advanced aerosol measurements (EC-OC, size particle distribution, and aerosol optical properties), data quality objectives, QA/QC, as well as data control and manipulation. In addition guidance in the field of sampling and chemical analysis of air, particulate matter and precipitation, enable Croatian scientists to learn how to develop and upgrade monitoring activities in this area to cover the chemical properties of atmosphere that would include, among others, the analysis of heavy metals and persistent organic pollutants.
environmental chemistry and ecotoxicology, including aspects of analytical and process chemistry (sampling and analytical techniques), long-range transport, fate and effects (sources, levels, transformations, toxic and ecotoxic effects on biota, biotests and biomonitoring), risk assessment, data analysis and modelling including GIS, and provides a hands-on experience with the chemical and toxicological tests designed to answer specific environmental problems. The special topic of this year was Smart and Healthy Cities. The study plan include a field trip to the National Atmospheric observatory Košetice, mutlimaterix sampling site, serving as the complex background station for the Central and Eastern Europe under the Global Monitoring Plan, EMEP (Cooperative Programme for Monitoring and Evaluation of the Long-Range Transmissions of Air Pollutants in Europe) as well as providing data in other long-term monitoring activities in relation to air, water, soil, deposition and other environmental and biotic matrices. This part of Summer School was led and organized by prof. Martin Scheringer from Insitute for Chemical and Bioengineering ETH Zurich. The international summer school is organized once per year and ask capacity of ACTRIS research infrastructure for 1- day intensive expert training for group of participants (include post doc).

The plan for 1-day intensive training was completely fulfilled. The training module attended 35 participants from 21 countries (Armenia, Austria, Belarus, Bosnia and Herzegovina, Denmark, France, Costa Rica, Chile, Germany, Hungary, Italy, Lithuania, Malaysia, the Netherlands, Nigeria, Norway, Poland, Russia, Serbia, Ukraine, USA). Passive and active air samplers, sampling of POPs in ambient air, long-term monitoring of POPs in ambient air and atmospheric deposition, integrated monitoring of POPs in ambient air, atmospheric deposition, surface water, sediment, soil, needles, and lichen, active and passive water samplers, atmospheric deposition samplers, detailed studies of the POPs distribution among the size segregated atmospheric aerosols and the gas phase and the impact on their lifetime, long-range transport and related health risks and studies focused on POPs scavenging efficiency of dry and wet deposition processes and application of new knowledge in model development and validation were the key activities of training in observatory and were introduced and/or demonstrated to participants. Available capacity, services and instruments of ACTRIS research infrastructure in the field of air and water monitoring of POPs at Kosetice sampling site were introduced.

4) *Supersite measurements for research and modelling (REACHMOND).* 24-27.9.2018. 10 persons, RWDs: 40

The main goal of the visit was educational in order to familiarize with the established EU environmental research infrastructure ACTRIS. As a new EU member state Croatia is interested in focused training and transfer of knowledge with respect to development and utilisation of scientific monitoring infrastructure and data. Introduction of the sampling capacities in Košetice observatory and monitoring data processing enabled Croatian scientists to learn about multiple aspects of planning, establishing and implementation of scientific monitoring, including its operational and financial sustainability. The second element of the project was to learn about the data and its use in research projects, models' evaluation as well as for regulatory purposes. Specifically, interest was focused on advanced aerosol measurements (EC-OC, size particle distribution, and aerosol optical properties), data quality objectives, QA/QC, as well as data control and manipulation. In addition guidance in the field of sampling and chemical analysis of air, particulate matter and precipitation, enable Croatian scientists to learn how to develop and upgrade monitoring activities in this area to cover the chemical properties of atmosphere that would include, among others, the analysis of heavy metals and persistent organic pollutants.
These measurements are currently missing in South-eastern Europe. The lectures and practical exercises were focused on:

- theoretical background of various monitoring elements (air, aerosols, precipitation)

- organizational aspects of research monitoring: planning, establishment, implementation, sustainability

- operational aspects of monitoring and on-site field study

- data analysis, validation and QAQC

- data management and dissemination

- data utilisation for scientific research and regulatory purposes

- discussion and exchange of experiences covering all topics

5) ACTRIS-CZ for air quality monitoring and modelling in Slovakia (ACTRIS-CZ_SR). 13-16.11.2018. 5 persons, RWDs: 18

The TNA of new staff members from Slovak Hydrometeorological Institute (SHMU) was focused on the education in the field of atmospheric processes and the training in monitoring technologies. Slovakia is the only country in the Central Europe, which still does not participate on the ACTRIS initiative. The visit offered the opportunity to introduce the infrastructure of ACTRIS to young scientists and technicians and to prepare further cooperation.

Despite its development in the last few years, the air pollution monitoring in Slovakia is still suffering from the missing measurements of the atmospheric aerosol properties (aerosol size fractions, light absorption and scattering, wet deposition of POPs). The training in the Kosetice monitoring superstation supported the team in integration of missing measurements into the air quality monitoring program in Slovakia. The second purpose of the stay was focused on the improvement of the air quality modelling in Slovakia. Air quality modelling is used for the regulatory purposes with aim to identify origin of the pollution and to assess effect of the measures in different emission scenarios on air quality improvement. Measured data from ACTRIS research infrastructure will be used for the validation of air quality model output and its meteorological inputs.

The programme of TNA was organized in following main topics:

- Presentation of ACTRIS and its role in the atmospheric research infrastructure landscape in Europe

- Physical and chemical processes in the atmosphere and their influence on the path of the pollutants in the surface layer.

- Practical exercises in air quality monitoring and assessments (technical aspects, data validation and analyses, data reporting)

- General aspects of air quality (Air pollution abatement strategies, increase of public awareness on air quality problems)

- Individual consultation focused on air quality model validation and the formation of atmospheric aerosols.

6) Spatial distribution of atmospheric aerosols sources impacting central Czech Republic and Northern France (SOURCEIMPACT). 23-25.1.2019. 2 persons, RWDs: 4
These measurements are currently missing in South-eastern Europe. The lectures and practical exercises were focused on:

- theoretical background of various monitoring elements (air, aerosols, precipitation)

- organizational aspects of research monitoring: planning, establishment, implementation, sustainability

- operational aspects of monitoring and on-site field study

- data analysis, validation and QAQC

- data management and dissemination

- data utilisation for scientific research and regulatory purposes

- discussion and exchange of experiences covering all topics

5) ACTRIS-CZ for air quality monitoring and modelling in Slovakia (ACTRIS-CZ_SR). 13-16.11.2018. 5 persons, RWDs: 18

The TNA of new staff members from Slovak Hydrometeorological Institute (SHMU) was focused on the education in the field of atmospheric processes and the training in monitoring technologies. Slovakia is the only country in the Central Europe, which still does not participate on the ACTRIS initiative. The visit offered the opportunity to introduce the infrastructure of ACTRIS to young scientists and technicians and to prepare further cooperation.

Despite its development in the last few years, the air pollution monitoring in Slovakia is still suffering from the missing measurements of the atmospheric aerosol properties (aerosol size fractions, light absorption and scattering, wet deposition of POPs). The training in the Kosetice monitoring superstation supported the team in integration of missing measurements into the air quality monitoring program in Slovakia. The second purpose of the stay was focused on the improvement of the air quality modelling in Slovakia. Air quality modelling is used for the regulatory purposes with aim to identify origin of the pollution and to assess effect of the measures in different emission scenarios on air quality improvement. Measured data from ACTRIS research infrastructure will be used for the validation of air quality model output and its meteorological inputs.

The programme of TNA was organized in following main topics:

* Presentation of ACTRIS and its role in the atmospheric research infrastructure landscape in Europe

* Physical and chemical processes in the atmosphere and their influence on the path of the pollutants in the surface layer.

* Practical exercises in air quality monitoring and assessments (technical aspects, data validation and analyses, data reporting)

* General aspects of air quality (Air pollution abatement strategies, increase of public awareness on air quality problems)

* Individual consultation focused on air quality model validation and the formation of atmospheric aerosols.

6) Spatial distribution of atmospheric aerosols sources impacting central Czech Republic and Northern France (SOURCEIMPACT). 23-25.1.2019. 2 persons, RWDs: 4
Recent studies showed Central Europe as a potential source area of PM₁₀ impacting the Northern France region during exceedance episodes frequently occurring in spring. Long term monitoring networks across Europe, such as EMEP network, aims at studying the source and trends of atmospheric particles. The National Atmospheric Observatory Košetice observatory (ACTRIS, EMEP, GAW) is a multimatrix sampling site serving as a complex background station for Central Europe impacted by emission sources from neighbouring countries as well as long distance transport sources. The main objective of the project “SOURCEIMPACT” was to identify the possible geographical origins of atmospheric pollutants impacting Kosetice rural receptor site in comparison to Revin (Northern France) rural sites (EMEP). Based on historical air pollutants data (2009-2013) collected on both sites and 72-h air mass back trajectories, the influence of more or less frequent local and long distance sources was investigated using two complementary trajectory-based statistical models: Concentration Field and Potential Source Contribution Function. These models include various constraints (precipitations, boundary layer height, density of Back-Trajectory endpoints) to improve the spatial representativeness and the statistical significance of the potential source maps. The selection of the air trajectory model, fine tuning of the database validation and quality control are some of the key parameters to evaluate in type of project.

The visit helped to get familiar with monitoring aspect (ground base and tall tower) and data processing at Košetice observatory. It's a key step for building our cooperation for future research projects.

The TNA included following topics:

* Presentation of the research activities of The National Atmospheric Observatory Košetice (NAOK)

* Visit through the monitoring infrastructure (ground base and tall tower) at NAOK

* Introduction of the sampling capacities at NAOK

* Establishment and discussion around the validation and QAQC of the database

## 5.13 Izana Subtropical Access Facility, ISAF (AEMET)

Overall, ISAF has provided 100 access days, accounting for 100% of the access planned, as part of 8 TNA projects.

1) The project ISAF-1 (8 access days) was devoted to training, which is a very important activity (capacity building) focused on colleagues and institutions that can benefit from the expertise of ISAF staff. It has also promoted cooperation between CONICET in Argentina and the University of Valladolid, with plans to sign a collaboration agreement that is currently being prepared.

2) ISAF2 - PSCIZO2016 (57 access days) participated in the PMOD/WRC campaign at the Izaña Subtropical Access Facility. It was aimed at obtaining a calibration of aerosol optical depth for the standard, ultraviolet and lunar precision filter radiometers (PFR) operated within the GAW PFR global network. This calibration would also allow the traceability of measurements at the Izaña Subtropical Access Facility to become traceable to the world reference for AOD, represented by a Triad of PFR instruments stationed at the World Optical Depth Research and Calibration Center (WORCC). In addition, a spectroradiometer was operated for direct solar irradiance measurements in the range 300 to 500 nm to retrieve solar
Recent studies showed Central Europe as a potential source area of PM₁₀ impacting the Northern France region during exceedance episodes frequently occurring in spring. Long term monitoring networks across Europe, such as EMEP network, aims at studying the source and trends of atmospheric particles. The National Atmospheric Observatory Košetice observatory (ACTRIS, EMEP, GAW) is a multimatrix sampling site serving as a complex background station for Central Europe impacted by emission sources from neighbouring countries as well as long distance transport sources. The main objective of the project “SOURCEIMPACT” was to identify the possible geographical origins of atmospheric pollutants impacting Kosetice rural receptor site in comparison to Revin (Northern France) rural sites (EMEP). Based on historical air pollutants data (2009-2013) collected on both sites and 72-h air mass back trajectories, the influence of more or less frequent local and long distance sources was investigated using two complementary trajectory-based statistical models: Concentration Field and Potential Source Contribution Function. These models include various constraints (precipitations, boundary layer height, density of Back-Trajectory endpoints) to improve the spatial representativeness and the statistical significance of the potential source maps. The selection of the air trajectory model, fine tuning of the database validation and quality control are some of the key parameters to evaluate in type of project.

The visit helped to get familiar with monitoring aspect (ground base and tall tower) and data processing at Košetice observatory. It's a key step for building our cooperation for future research projects.

The TNA included following topics:

* Presentation of the research activities of The National Atmospheric Observatory Košetice (NAOK)

* Visit through the monitoring infrastructure (ground base and tall tower) at NAOK

* Introduction of the sampling capacities at NAOK

* Establishment and discussion around the validation and QAQC of the database

## 5.13 Izana Subtropical Access Facility, ISAF (AEMET)

Overall, ISAF has provided 100 access days, accounting for 100% of the access planned, as part of 8 TNA projects.

1) The project ISAF-1 (8 access days) was devoted to training, which is a very important activity (capacity building) focused on colleagues and institutions that can benefit from the expertise of ISAF staff. It has also promoted cooperation between CONICET in Argentina and the University of Valladolid, with plans to sign a collaboration agreement that is currently being prepared.

2) ISAF2 - PSCIZO2016 (57 access days) participated in the PMOD/WRC campaign at the Izaña Subtropical Access Facility. It was aimed at obtaining a calibration of aerosol optical depth for the standard, ultraviolet and lunar precision filter radiometers (PFR) operated within the GAW PFR global network. This calibration would also allow the traceability of measurements at the Izaña Subtropical Access Facility to become traceable to the world reference for AOD, represented by a Triad of PFR instruments stationed at the World Optical Depth Research and Calibration Center (WORCC). In addition, a spectroradiometer was operated for direct solar irradiance measurements in the range 300 to 500 nm to retrieve solar
irradiance spectra and derive spectral aerosol optical depth over this wavelength range. The instruments were brought to the Izaña Subtropical Access Facility on 5 September and removed at the end of the campaign on 29 September 2016. The instruments were operated on solar trackers on the radiation platform of the Izaña Subtropical Access Facility. Measurements of solar irradiance were performed every minute for the PFR instruments, and every 20 minutes with the spectroradiometer. The measurement period covered the period 7 to 28 September 2016.

3) The ISAF-03 project (4 access days) involved the performance of the following: Practice with sunphotometers: installation of Cimel sunphotometer, configuration of ASTPwin control software, performance of daily and weekly maintenance, troubleshooting and packing.

It also involves introduction to calibration system in AERONET: calibration of direct sun measurements (Pre and Post-calibration) and calibration of radiance measurements in the optical calibration laboratory. Access to measurements and derived products: AERONET products, alert system at AERONET and alert system at CAELIS not excluding data analysis, interpretation and limitation.

4) ISAF-5 project / PICASSO-VISION (7 access days): The measurements have been done with the Engineering Model of VISION. The solar images have been recorded at specific wavelengths in the visible and near-infrared spectral domain. For ozone retrieval, observations have been made at three different wavelengths, one at 601 nm, at the centre of the Chappuis O3 absorption band, and at two wavelengths located on each side of the Chappuis band, where O3 absorption is negligible and only Rayleigh and aerosols scatterings contribute: the ratio of these wavelengths will provide the quantity of O3 present in the path. The intensity of the signal versus solar elevation will provide information about extra-terrestrial solar flux (Langley plot), as well as the atmospheric aerosol and ozone content. Moreover, the shape of the solar image, particularly at low solar elevations where it is deformed by the refraction, will provide information about the temperature profile in the atmosphere (the refraction angle is depending on the air density, which in turn depends on the temperature).

5) Project ISAF-7 (Training on AERONET photometer operation for Tunis_Carthage technicians, 2017, 4 access days) was devoted to training, which is a very important activity (capacity building) to institutions and instrument operators that can benefit from the expertise of ISAF staff.

6) Project ISAF-8 (HM-CLuP: High Mountain Calibration of Lunar Photometer, 8 access days) was a mobility of expert. the station was chosen for a calibration/intercalibration campaign of lunar photometers, including a two-days workshop on this developing technique.

7) Project ISAF-9 (4 access days) was devoted to training, which is a very important activity (capacity building) focused on colleagues and institutions that can benefit from the expertise of ISAF staff. It was also related to providing actively support to the monitoring programs in developing countries. In particular, Tamanrasset station is in the heart of the Sahara desert, covering a lack of atmospheric measurements in that area. That project belong to non-EU users, reaching the 20% quota for non-EU users of the total accesses.

8) Project ISAF-10 (8 access days) was a combination of training and expert mobility. The researchers from the private company EKO Instruments ran their own instruments at ISAF because of the unique characteristics of the Observatory, and obtained ancillary and
irradiance spectra and derive spectral aerosol optical depth over this wavelength range. The instruments were brought to the Izaña Subtropical Access Facility on 5 September and removed at the end of the campaign on 29 September 2016. The instruments were operated on solar trackers on the radiation platform of the Izaña Subtropical Access Facility. Measurements of solar irradiance were performed every minute for the PFR instruments, and every 20 minutes with the spectroradiometer. The measurement period covered the period 7 to 28 September 2016.

3) The ISAF-03 project (4 access days) involved the performance of the following: Practice with sunphotometers: installation of Cimel sunphotometer, configuration of ASTPwin control software, performance of daily and weekly maintenance, troubleshooting and packing.

It also involves introduction to calibration system in AERONET: calibration of direct sun measurements (Pre and Post-calibration) and calibration of radiance measurements in the optical calibration laboratory. - Access to measurements and derived products: AERONET products, alert system at AERONET and alert system at CAELIS not excluding data analysis, interpretation and limitation.

4) ISAF-5 project / PICASSO-VISION (7 access days): The measurements have been done with the Engineering Model of VISION. The solar images have been recorded at specific wavelengths in the visible and near-infrared spectral domain. For ozone retrieval, observations have been made at three different wavelengths, one at 601 nm, at the centre of the Chappuis O3 absorption band, and at two wavelengths located on each side of the Chappuis band, where O3 absorption is negligible and only Rayleigh and aerosols scatterings contribute: the ratio of these wavelengths will provide the quantity of O3 present in the path. The intensity of the signal versus solar elevation will provide information about extra-terrestrial solar flux (Langley plot), as well as the atmospheric aerosol and ozone content. Moreover, the shape of the solar image, particularly at low solar elevations where it is deformed by the refraction, will provide information about the temperature profile in the atmosphere (the refraction angle is depending on the air density, which in turn depends on the temperature).

5) Project ISAF-7 (Training on AERONET photometer operation for Tunis_Carthage technicians, 2017, 4 access days) was devoted to training, which is a very important activity (capacity building) to institutions and instrument operators that can benefit from the expertise of ISAF staff.

6) Project ISAF-8 (HM-CLuP: High Mountain Calibration of Lunar Photometer, 8 access days) was a mobility of expert. the station was chosen for a calibration/intercalibration campaign of lunar photometers, including a two-days workshop on this developing technique.

7) Project ISAF-9 (4 access days) was devoted to training, which is a very important activity (capacity building) focused on colleagues and institutions that can benefit from the expertise of ISAF staff. It was also related to providing actively support to the monitoring programs in developing countries. In particular, Tamanrasset station is in the heart of the Sahara desert, covering a lack of atmospheric measurements in that area. That project belong to non-EU users, reaching the 20% quota for non-EU users of the total accesses.

8) Project ISAF-10 (8 access days) was a combination of training and expert mobility. The researchers from the private company EKO Instruments ran their own instruments at ISAF because of the unique characteristics of the Observatory, and obtained ancillary and
complementary data and information provided by ISAF. Both parties benefited from enhanced
scientific cooperation.

ISAF-4 and ISAF-6 were withdrawn by the users.

**5.14 Granada Atmospheric Observatory, GRA (UGR)**

Seven TNA projects accounting for 179 access days ( nearly twice the minimum quantity of access foreseen ) have been carried out at GRA:

1) TNA TRAMP (TRaining on Aerosol Microphysical Profiling (transfer of knowledge from ACTRIS2 to LALINET, 34 access days), focused on an intensive training to apply GRASP algorithm to sun/sky photometer and elastic lidar data acquired in our station. The training process developed successfully, opening new possibilities for the Latin American Lidar Community taking into account that the team at Sao Paulo where Dr. Lopes develop his activity is coordinating the activities of LALINET, Latin American Lidar network. Along the next months transfer of knowledge will develop in LALINET, using the different workshops and some exploratory work will develop in order to check the feasibility of microphysical retrieval using limited configurations of input data, like those typically available in some LALINET stations.

2) TNA HYGROLIRA (Study of aerosol hygroscopicity by combination of lidar and microwave radiometer, 25 access days) focused on the study the aerosol hygroscopic growth by means of remote sensing techniques, in particular using lidar and microwave measurements. During the TNA period Dr. Navas collected with the help of the Granada's personal a data set of measurements useful for this study. He implemented two methods for calibrating the lidar water vapour channel using RS measurements. In addition, he also set up an automatic algorithm to combine the water vapour profiles from the lidar and the temperature profiles from the microwave radiometer to retrieve relative humidity profiles. The aerosol hygroscopic growth has been studied by means of the enhancement factor of the backscatter coefficient. This factor combines information of aerosol and relative humidity profile. Some study cases have been analysed and compare with previous studies and main result s will be presente din the next AGU fall meeting. These studies on hygroscopic growth will continue in the next months during the stay of Colombian PhD student, developing a Double PhD between la Universidad Nacional de Colombia y la Universidad de Granada. Dr. Navas will provide advice for developing an extended experimental period and for analyzing the data.

3) The TNA Aer-Cloud RenSen (Remote sensing activities with LIDAR, photometers, microwave radiometer and on-site measurements of the aerosol and clouds, GRA-4, 15 access days) involved a team of researcher from CEILAP-UNIDEF (CITEDEF-CONICET) from Buenos Aires (Argentina). The PI was Dr. Elian Wolfran who sent the Graduate Pablo Martin Vasquez for a full training in the use of a set of remote sensing instruments involved in the SLOPE II project (Sierra Nevada Lidar AerOsol Profiling Experiment II. The training period was held in the weeks between 20th of June and 5th of July. A particular training was received from Granada Atmospheric staff on the use of SUN radiometers, concerning alignment, data acquisition and properly work of this kind of instruments. Also training in the use of Multi-λ LIDAR and data interpretation for the lidar signal was tested. Special care was paid to the interaction between different instruments, combining multispectral Raman lidar with sun photometer, Doppler Lidar, In Situ measurements and sky-cameras. The training received was applied to a particular case of study, collected on June 13th 2017, when a forest fire occurred
complementary data and information provided by ISAF. Both parties benefited from enhanced
scientific cooperation.

ISAF-4 and ISAF-6 were withdrawn by the users.

**5.14 Granada Atmospheric Observatory, GRA (UGR)**

Seven TNA projects accounting for 179 access days ( nearly twice the minimum quantity of access foreseen ) have been carried out at GRA:

1) TNA TRAMP (TRaining on Aerosol Microphysical Profiling (transfer of knowledge from ACTRIS2 to LALINET, 34 access days), focused on an intensive training to apply GRASP algorithm to sun/sky photometer and elastic lidar data acquired in our station. The training process developed successfully, opening new possibilities for the Latin American Lidar Community taking into account that the team at Sao Paulo where Dr. Lopes develop his activity is coordinating the activities of LALINET, Latin American Lidar network. Along the next months transfer of knowledge will develop in LALINET, using the different workshops and some exploratory work will develop in order to check the feasibility of microphysical retrieval using limited configurations of input data, like those typically available in some LALINET stations.

2) TNA HYGROLIRA (Study of aerosol hygroscopicity by combination of lidar and microwave radiometer, 25 access days) focused on the study the aerosol hygroscopic growth by means of remote sensing techniques, in particular using lidar and microwave measurements. During the TNA period Dr. Navas collected with the help of the Granada's personal a data set of measurements useful for this study. He implemented two methods for calibrating the lidar water vapour channel using RS measurements. In addition, he also set up an automatic algorithm to combine the water vapour profiles from the lidar and the temperature profiles from the microwave radiometer to retrieve relative humidity profiles. The aerosol hygroscopic growth has been studied by means of the enhancement factor of the backscatter coefficient. This factor combines information of aerosol and relative humidity profile. Some study cases have been analysed and compare with previous studies and main result s will be presente din the next AGU fall meeting. These studies on hygroscopic growth will continue in the next months during the stay of Colombian PhD student, developing a Double PhD between la Universidad Nacional de Colombia y la Universidad de Granada. Dr. Navas will provide advice for developing an extended experimental period and for analyzing the data.

3) The TNA Aer-Cloud RenSen (Remote sensing activities with LIDAR, photometers, microwave radiometer and on-site measurements of the aerosol and clouds, GRA-4, 15 access days) involved a team of researcher from CEILAP-UNIDEF (CITEDEF-CONICET) from Buenos Aires (Argentina). The PI was Dr. Elian Wolfran who sent the Graduate Pablo Martin Vasquez for a full training in the use of a set of remote sensing instruments involved in the SLOPE II project (Sierra Nevada Lidar AerOsol Profiling Experiment II. The training period was held in the weeks between 20th of June and 5th of July. A particular training was received from Granada Atmospheric staff on the use of SUN radiometers, concerning alignment, data acquisition and properly work of this kind of instruments. Also training in the use of Multi-λ LIDAR and data interpretation for the lidar signal was tested. Special care was paid to the interaction between different instruments, combining multispectral Raman lidar with sun photometer, Doppler Lidar, In Situ measurements and sky-cameras. The training received was applied to a particular case of study, collected on June 13th 2017, when a forest fire occurred
in the surroundings of Granada and a column of smoke rose above the city. The study case has served for the application of the different techniques and have been presented in poster format in different ACTRIS meeting and will be submitted for presentation at the European Lidar Conference.

4) The TNA IPA-SLOPE-II, (Individual particle analysis of atmospheric aerosols during SLOPE II, GRA-5, 13 access days) was developed from 18/06/2017 – 01/07/2017. The activity proposed by the PI Prof. Sandra Mogo was developed by the Graduate Student Renan Zocca from the University of Beira Interior (Portugal). The aim of the TNA was analyzing in situ aerosols during the SLOPE II field experiment. the aerosol concentration and size distribution were obtained as well as the chemical composition and the morphology of the individual atmospheric aerosols, using gravimetry, transmission electron microscopy (TEM) and scanning electron microscopy with energy dispersive x-ray analysis (SEM/EDX). During the campaign the aerosol samples were continuously deposited onto a polycarbonate membrane filter at a known flow rate. The cut-off diameter of the inlet nozzle and sample transport line was approximately 10 microm. The mass levels of particulate matter are obtained by weighting the filters with standard methods. The filters were weighed before and after collection and care is taken to eliminate electrostatic charges (using a Po-210 neutralizer) before weighing. Subsequently, the filters with their collected aerosols are analyzed in the lab, work that is under development. The under graduate student, attending the TNA, participated in SLOPE II, operating the sampling systems used for collecting the samples to be later analyze at the lab. He learnt about the in-situ techniques used during SLOPE II.

5) The TNA ReSASE (Remote Sensing and in-situ Activities during SLOPE2 Experiment, GRA-6, 32 access days), was developed in coincidence with the experimental activities of SLOPE II. Scientists from the University of Evora with different level of expertise leaded by Dr. Daniele Bortoli contribute to the experimental campaign with remote sensing and in-situ measurements of trace gases. Furthermore, they develop an intensive field campaign for intercomparing different remote sensing profiling systems. Thus, for the full period of the field campaign (June-July-August) it has been performed remote sensing and surface measurements of trace gases with a DOAS spectrometer in Zenith sky as well as in MAX-DOAS configuration and with an Air Quality mobile station (AQMS) equipped with in-situ analyzers respectively, in order to assess the role of atmospheric tracers on atmospheric compounds (clouds, aerosol...) and interactions between them. Furthermore, during a short period of about 10 days at the beginning of the project an intensive campaign was developed: gathering data useful for testing the retrieval schemes to be applied for 24-hour absorption coefficient profiling through inversion of remote sensing observations. This has been done with a RPG G4 Microwave Radiometers (MWR) and a Vaisal CL31 ceilometer from the University of Evora used in parallel with the G2 MWR, as well as a Jenoptik CHM 15k Nimbus ceilometers and a Doppler lidar (DL) available at the GRANADA station.

6) PoliSyns (Polarization Lidar calibration and Lidar signal analysis by synergetic numerical algorithms, 32 access days). The TNA applicant is currently developing a project called "Polarimetric system for the identification and classification of atmospheric aerosols" where depolarization measurements of atmospheric aerosols will be performed in controlled laboratory conditions. To be able to compare the in-situ and remote-sesing depolarization measurements, the TNA applicant needs an advanced trainning to reach a deep understanding of the lidar depolarization technique and, in a more general way, the retrievals and algorithms applied to remote-sesing measurements. Thus, the main scientific objective of the PoliSyns is
in the surroundings of Granada and a column of smoke rose above the city. The study case has served for the application of the different techniques and have been presented in poster format in different ACTRIS meeting and will be submitted for presentation at the European Lidar Conference.

4) The TNA IPA-SLOPE-II, (Individual particle analysis of atmospheric aerosols during SLOPE II, GRA-5, 13 access days) was developed from 18/06/2017 – 01/07/2017. The activity proposed by the PI Prof. Sandra Mogo was developed by the Graduate Student Renan Zocca from the University of Beira Interior (Portugal). The aim of the TNA was analyzing in situ aerosols during the SLOPE II field experiment. the aerosol concentration and size distribution were obtained as well as the chemical composition and the morphology of the individual atmospheric aerosols, using gravimetry, transmission electron microscopy (TEM) and scanning electron microscopy with energy dispersive x-ray analysis (SEM/EDX). During the campaign the aerosol samples were continuously deposited onto a polycarbonate membrane filter at a known flow rate. The cut-off diameter of the inlet nozzle and sample transport line was approximately 10 microm. The mass levels of particulate matter are obtained by weighting the filters with standard methods. The filters were weighed before and after collection and care is taken to eliminate electrostatic charges (using a Po-210 neutralizer) before weighing. Subsequently, the filters with their collected aerosols are analyzed in the lab, work that is under development. The under graduate student, attending the TNA, participated in SLOPE II, operating the sampling systems used for collecting the samples to be later analyze at the lab. He learnt about the in-situ techniques used during SLOPE II.

5) The TNA ReSASE (Remote Sensing and in-situ Activities during SLOPE2 Experiment, GRA-6, 32 access days), was developed in coincidence with the experimental activities of SLOPE II. Scientists from the University of Evora with different level of expertise leaded by Dr. Daniele Bortoli contribute to the experimental campaign with remote sensing and in-situ measurements of trace gases. Furthermore, they develop an intensive field campaign for intercomparing different remote sensing profiling systems. Thus, for the full period of the field campaign (June-July-August) it has been performed remote sensing and surface measurements of trace gases with a DOAS spectrometer in Zenith sky as well as in MAX-DOAS configuration and with an Air Quality mobile station (AQMS) equipped with in-situ analyzers respectively, in order to assess the role of atmospheric tracers on atmospheric compounds (clouds, aerosol...) and interactions between them. Furthermore, during a short period of about 10 days at the beginning of the project an intensive campaign was developed: gathering data useful for testing the retrieval schemes to be applied for 24-hour absorption coefficient profiling through inversion of remote sensing observations. This has been done with a RPG G4 Microwave Radiometers (MWR) and a Vaisal CL31 ceilometer from the University of Evora used in parallel with the G2 MWR, as well as a Jenoptik CHM 15k Nimbus ceilometers and a Doppler lidar (DL) available at the GRANADA station.

6) PoliSyns (Polarization Lidar calibration and Lidar signal analysis by synergetic numerical algorithms, 32 access days). The TNA applicant is currently developing a project called "Polarimetric system for the identification and classification of atmospheric aerosols" where depolarization measurements of atmospheric aerosols will be performed in controlled laboratory conditions. To be able to compare the in-situ and remote-sesing depolarization measurements, the TNA applicant needs an advanced trainning to reach a deep understanding of the lidar depolarization technique and, in a more general way, the retrievals and algorithms applied to remote-sesing measurements. Thus, the main scientific objective of the PoliSyns is
a training-through-research on: 1) Calibration method for depolarization lidar measurements (Bravo-Aranda et al., 2016; Belegante et al., 2018). This work will be used to learn about empirical and theoretical analysis of atmospheric aerosols under different atmospheric and aerosol load situations that can be found in Medellin (Colombia). 2) Retrieval algorithms such as LIRIC and GARRLIC combining collocated Lidar and AERONET sun photometer measurements. 3) Transfer of knowledge about the optimization of optical systems for a correct acquisition and study of depolarization by backscattering of aerosols will be assured through the training-through-research as well as scientific-technical meetings nourished by the extensive experience of the GFAT-UGR on processing and analysis of remote-sensing measurements (particularly on LIDAR systems).

7) DePLUME (Dust size distribution profiling with bespoke balloon-borne and UAV-based particle counters, 28 access days): The main objective was to use the ACTRIS GRA Research Infrastructure in order to assess the Universal Cloud and Aerosol Sounding System (UCASS) - based on balloon and UAV platforms - against the advanced retrievals from LIRIC and GARRLIC codes, as well as the POLIPHON method (Ansmann et al., 2012). The UCASS is an open-path OPC that has been developed at the University of Hertfordshire and can be used on a balloon, as a dropsonde, or deployed on a UAV. The UCASS allows for affordable in-situ profiling of the size distribution of aerosols and cloud droplets in 16 size bins, capable of sizing particles in the range 0.4-40 µm. The University of Hertfordshire Aerosol SAMpling UAV (UH-AeroSAM) is a bespoke UAV designed to take in-situ measurements of aerosol properties using a modified UCASS, along with other variables which are common inputs for cloud and aerosol parameterizations (e.g. temperature and humidity). Since UAV based measurements in atmospheric science are still in their infancy, this platform requires a rigorous validation procedure with reference instruments which the ACTRIS GRA Research Infrastructure provides (along with balloon-based soundings). The specific scientific objectives of DePLUme were: i) the assessment of the quality of UCASS measurements deployed on 2 different systems (balloon-borne and on a UAV), ii) the contribution towards the validation of UH-AeroSAM for temperature, humidity and aerosol properties, and iii) the study of the dust microphysics using the synergy of remote sensing and in-situ methods.

## 5.15 CSIC Montseny, MSY (CSIC)

During the whole project period, six projects were carried out at the MSY infrastructure. 79 access days were provided, accounting for near 100% of the access offered.

Four of the projects were related to the investigation of processes of formation of particles with special emphasis in the organic aerosols. These processes are relevant at the area due to the combination of high insolation and high temperatures that favor the oxidation of gaseous precursors and also enhance emissions of biogenic compounds and the formation of semi volatile compounds, increasing the concentration of ultrafine particles, mainly at midday during summer).

The National Centre for Atmospheric Sciences, from the University of Birmingham, performed in 2015 the TNA AUFP-UHIC (MSY-2), led by David Beddows, aimed to study the nucleation episodes by using a Particle Size Magnifier (PSM) that permits to measure the concentration of ultrafine particles (UFP) with diameter higher than 1 nm. PSM measurements combined with
a training-through-research on: 1) Calibration method for depolarization lidar measurements (Bravo-Aranda et al., 2016; Belegante et al., 2018). This work will be used to learn about empirical and theoretical analysis of atmospheric aerosols under different atmospheric and aerosol load situations that can be found in Medellin (Colombia). 2) Retrieval algorithms such as LIRIC and GARRLIC combining collocated Lidar and AERONET sun photometer measurements. 3) Transfer of knowledge about the optimization of optical systems for a correct acquisition and study of depolarization by backscattering of aerosols will be assured through the training-through-research as well as scientific-technical meetings nourished by the extensive experience of the GFAT-UGR on processing and analysis of remote-sensing measurements (particularly on LIDAR systems).

7) DePLUME (Dust size distribution profiling with bespoke balloon-borne and UAV-based particle counters, 28 access days): The main objective was to use the ACTRIS GRA Research Infrastructure in order to assess the Universal Cloud and Aerosol Sounding System (UCASS) - based on balloon and UAV platforms - against the advanced retrievals from LIRIC and GARRLIC codes, as well as the POLIPHON method (Ansmann et al., 2012). The UCASS is an open-path OPC that has been developed at the University of Hertfordshire and can be used on a balloon, as a dropsonde, or deployed on a UAV. The UCASS allows for affordable in-situ profiling of the size distribution of aerosols and cloud droplets in 16 size bins, capable of sizing particles in the range 0.4-40 µm. The University of Hertfordshire Aerosol SAMpling UAV (UH-AeroSAM) is a bespoke UAV designed to take in-situ measurements of aerosol properties using a modified UCASS, along with other variables which are common inputs for cloud and aerosol parameterizations (e.g. temperature and humidity). Since UAV based measurements in atmospheric science are still in their infancy, this platform requires a rigorous validation procedure with reference instruments which the ACTRIS GRA Research Infrastructure provides (along with balloon-based soundings). The specific scientific objectives of DePLUme were: i) the assessment of the quality of UCASS measurements deployed on 2 different systems (balloon-borne and on a UAV), ii) the contribution towards the validation of UH-AeroSAM for temperature, humidity and aerosol properties, and iii) the study of the dust microphysics using the synergy of remote sensing and in-situ methods.

## 5.15 CSIC Montseny, MSY (CSIC)

During the whole project period, six projects were carried out at the MSY infrastructure. 79 access days were provided, accounting for nearly 100% of the access offered.

Four of the projects were related to the investigation of processes of formation of particles with special emphasis in the organic aerosols. These processes are relevant at the area due to the combination of high insolation and high temperatures that favor the oxidation of gaseous precursors and also enhance emissions of biogenic compounds and the formation of semi volatile compounds, increasing the concentration of ultrafine particles, mainly at midday during summer).

The National Centre for Atmospheric Sciences, from the University of Birmingham, performed in 2015 the TNA AUFP-UHIC (MSY-2), led by David Beddows, aimed to study the nucleation episodes by using a Particle Size Magnifier (PSM) that permits to measure the concentration of ultrafine particles (UFP) with diameter higher than 1 nm. PSM measurements combined with
routine measurements carried out by the IDAEA group by means of SMPS instruments (Tropos SMPS, Long DMA TSI-3080 SMPS; a short DMA TSI-3082). This set of instruments permitted to determine number concentrations and particle size spectra spanning size bins 1.25 - 478.3 nm. Nucleation events were observed using the PSM at the Barcelona urban site but not at the Montseny rural background site probably because of the high loading of particulate matter observed during these days.

The Laboratoire Chimie Environnement (LCE) from Aix Marseille Université, carried out two projects, both led by Nicolas Marchand, at Montseny: TNA UFO-AHI (MSY-1) and HOUSE2 (MSY-5). During both projects, LCE deployed a PTR-ToF-MS 8000, Ionicon. This instruments permits to quantify VOCs in near real time. The high mass resolution of the mass analyzer allows the identification (chemical formulae) and quantification of about a hundreds of VOCs (about 20 could be identify unambiguously). It provides the opportunity to capture the rapid changes of the overall VOCs mixture which can be further study by factorial analysis such as constrained PMF.

During UFO-AHI, performed in 2015, not a relevant relationship between the gas and organic compounds and the formation of UFP was stablished probably attributed to the adverse meteorological conditions. Therefore, the repetition of measurements was planned for the next periods. The HOUSE 2 project, was carried out in 2017 within the framework of the HOUSE project (IDAEA-CSIC, http://www.idaea.csic.es/egar/portfolio-items/house) aimed at investigating the atmospheric scenarios and processes yielding to the high formation rates of ozone (O3), ultrafine particles (UFP) and secondary aerosols (SA) typical of the Western Mediterranean Basin in summer. PTRM measurements carried out by Aix Marseille University allowed to investigate the time variations of VOCs concentrations, identifying a clear diurnal cycle for monoterpene, characteristic of a local production, whereas the diurnal cycle of isoprene is more complex.

In the framework of HOUSE, vertical profiles of O3, UFP, BC, PM with instrumented tethered balloons were performed by researchers from the Department of Mechanical Engineering of Hanyang University under the HOUSE 1 TNA project (MSY-4). This group, led by Professor Kang-Ho Ahn, has experience on designing and constructing miniaturized instruments for measuring aerosol properties by using UAV. Vertical profiling with miniaturized instruments is an interesting strategy for characterizing the stratification layers caused by the recirculation of air masses, typical in summer in the study area.

TNA to MSY were also focused to testing new instrumentation. Thus, during HOUSE 1, the performance of the Hanyang miniaturized instruments was tested against with the MSY site instruments, operating under ACTRIS requirements. Two other TNA projects were carried out by SMEs aimed to test new instrumentation and techniques under the Mediterranean specific conditions.

During the SCOPE TNA project (MSY-3), led by Pavlos Panteliadis, the Sunset Laboratory BV was interested in checking the performance of the Field OCEC analyzer using the EUSAAR2 protocol as following the requirement for the networks of all EU member states to measure EC and OC in particulate matter at background sites according to the Council Directive 2008/50/EC on ambient air quality and cleaner air for Europe. The Montseny (MSY) site was selected by Sunset Laboratory given that it is mostly dominated by biogenic emissions but is also affected by a large variety of emission sources: natural sources such as African dust, marine aerosols, biomass burning and urban emissions from densely populated areas along the
routine measurements carried out by the IDAEA group by means of SMPS instruments (Tropos SMPS, Long DMA TSI-3080 SMPS; a short DMA TSI-3082). This set of instruments permitted to determine number concentrations and particle size spectra spanning size bins 1.25 - 478.3 nm. Nucleation events were observed using the PSM at the Barcelona urban site but not at the Montseny rural background site probably because of the high loading of particulate matter observed during these days.

The Laboratoire Chimie Environnement (LCE) from Aix Marseille Université, carried out two projects, both led by Nicolas Marchand, at Montseny: TNA UFO-AHI (MSY-1) and HOUSE2 (MSY-5). During both projects, LCE deployed a PTR-ToF-MS 8000, Ionicon. This instruments permits to quantify VOCs in near real time. The high mass resolution of the mass analyzer allows the identification (chemical formulae) and quantification of about a hundreds of VOCs (about 20 could be identify unambiguously). It provides the opportunity to capture the rapid changes of the overall VOCs mixture which can be further study by factorial analysis such as constrained PMF.

During UFO-AHI, performed in 2015, not a relevant relationship between the gas and organic compounds and the formation of UFP was stablished probably attributed to the adverse meteorological conditions. Therefore, the repetition of measurements was planned for the next periods. The HOUSE 2 project, was carried out in 2017 within the framework of the HOUSE project (IDAEA-CSIC, http://www.idaea.csic.es/egar/portfolio-items/house) aimed at investigating the atmospheric scenarios and processes yielding to the high formation rates of ozone (O3), ultrafine particles (UFP) and secondary aerosols (SA) typical of the Western Mediterranean Basin in summer. PTRM measurements carried out by Aix Marseille University allowed to investigate the time variations of VOCs concentrations, identifying a clear diurnal cycle for monoterpene, characteristic of a local production, whereas the diurnal cycle of isoprene is more complex.

In the framework of HOUSE, vertical profiles of O3, UFP, BC, PM with instrumented tethered balloons were performed by researchers from the Department of Mechanical Engineering of Hanyang University under the HOUSE 1 TNA project (MSY-4). This group, led by Professor Kang-Ho Ahn, has experience on designing and constructing miniaturized instruments for measuring aerosol properties by using UAV. Vertical profiling with miniaturized instruments is an interesting strategy for characterizing the stratification layers caused by the recirculation of air masses, typical in summer in the study area.

TNA to MSY were also focused to testing new instrumentation. Thus, during HOUSE 1, the performance of the Hanyang miniaturized instruments was tested against with the MSY site instruments, operating under ACTRIS requirements. Two other TNA projects were carried out by SMEs aimed to test new instrumentation and techniques under the Mediterranean specific conditions.

During the SCOPE TNA project (MSY-3), led by Pavlos Panteliadis, the Sunset Laboratory BV was interested in checking the performance of the Field OCEC analyzer using the EUSAAR2 protocol as following the requirement for the networks of all EU member states to measure EC and OC in particulate matter at background sites according to the Council Directive 2008/50/EC on ambient air quality and cleaner air for Europe. The Montseny (MSY) site was selected by Sunset Laboratory given that it is mostly dominated by biogenic emissions but is also affected by a large variety of emission sources: natural sources such as African dust, marine aerosols, biomass burning and urban emissions from densely populated areas along the
coastline and transboundary sources from the European continent. Measurements were carried
out in 2016 and 2017 and were correlated with those obtained by other instruments at MSY.
BC measurements (880nm) obtained by the aethalometer were in very good agreement with EC
concentrations of the semi-continuous OCEC analyzer, R2=0.94. OC online measurements
were correlated with the organic aerosol (OA) concentrations calculated from the ACSM data
resulting in OA/OC ratio equal to 2.3. The final product of this campaign will be an ACTRIS
OCEC semi-continuous analyzer best practice document to be implemented by the ACTRIS
users.

Another TNA ongoing project, CADB2@MSY (MSY-6), focuses in the development of a methodology to determine quantitatively the contribution of Saharan dust to PM10 from measurements of the dust optical properties by using Absorption photometers. Saharan dust plays an important role in the climate system, and contributes to PM10 concentrations in large South-European cities. The TNA project is led by Griša Močnik from the J. Stefan Institute from Slovenia, and has the participation of researchers from Aerosol d.o.o. This private company supplied a platform, installed at MSY in February 2019, using Aethalometers AE33 with different inlets to measure fine aerosol absorption (AE33 with a PM1 inlet), and to measure concentrated coarse fraction absorption (AE33 with a virtual impactor inlet). The coarse fraction absorption is calculated as a difference between the concentrated sample (which contains some fine fraction) and the fine fraction. The concentration of relatively weakly absorbing coarse particles allows us to determine the spectrally resolved contribution of the coarse fraction to absorption and whether the coarse dust particles carry impacted BC. Aerosol d.o.o has supplied two additional platforms installed at BCN urban background sites and MSC mountain site. This approach together with concurrent aircraft measurements will permit to determine the pure Saharan dust optical properties before it is mixed into the receptor site mixing layer, discriminating whether internally mixed dust and BC are from the source or receptor regions, respectively. The measurements at the stations are ongoing and airborne measurements are planned for spring.

We like to highlight the aforementioned accesses to MSY site of SMEs (Sunset Laboratory and Aerosol d.o.o.) During these TNA projects the SMES have installed different instrument at MSY for testing their performance in the Mediterranean area. The instruments have been installed for periods longer than three months, under the supervision of the CSIC technical staff.

## 5.16 Hyltemossa, HYM (ULUND)

No TNA has been provided, contrary to what has been foreseen in the contract. The construction of the new co-located ICOS-ACTRIS site at Hyltemossa (HYM) was considerably delayed due primarily to difficulties securing building permits for the ICOS tall tower and buildings. This also caused a subsequent delay for setting up the ACTRIS extensions to the ICOS site. This meant that TNA was not possible in practice until 2018.

## 5.17 Cyprus Atmospheric Observatory, CAO (CYI)

Three TNA projects have been accepted at CAO, 93,5 access days are reported. It is a bit less than initially planned (100 RWD):
coastline and transboundary sources from the European continent. Measurements were carried
out in 2016 and 2017 and were correlated with those obtained by other instruments at MSY.
BC measurements (880nm) obtained by the aethalometer were in very good agreement with EC
concentrations of the semi-continuous OCEC analyzer, R2=0.94. OC online measurements
were correlated with the organic aerosol (OA) concentrations calculated from the ACSM data
resulting in OA/OC ratio equal to 2.3. The final product of this campaign will be an ACTRIS
OCEC semi-continuous analyzer best practice document to be implemented by the ACTRIS
users.

Another TNA ongoing project, CADB2@MSY (MSY-6), focuses in the development of a methodology to determine quantitatively the contribution of Saharan dust to PM10 from measurements of the dust optical properties by using Absorption photometers. Saharan dust plays an important role in the climate system, and contributes to PM10 concentrations in large South-European cities. The TNA project is led by Griša Močnik from the J. Stefan Institute from Slovenia, and has the participation of researchers from Aerosol d.o.o. This private company supplied a platform, installed at MSY in February 2019, using Aethalometers AE33 with different inlets to measure fine aerosol absorption (AE33 with a PM1 inlet), and to measure concentrated coarse fraction absorption (AE33 with a virtual impactor inlet). The coarse fraction absorption is calculated as a difference between the concentrated sample (which contains some fine fraction) and the fine fraction. The concentration of relatively weakly absorbing coarse particles allows us to determine the spectrally resolved contribution of the coarse fraction to absorption and whether the coarse dust particles carry impacted BC. Aerosol d.o.o has supplied two additional platforms installed at BCN urban background sites and MSC mountain site. This approach together with concurrent aircraft measurements will permit to determine the pure Saharan dust optical properties before it is mixed into the receptor site mixing layer, discriminating whether internally mixed dust and BC are from the source or receptor regions, respectively. The measurements at the stations are ongoing and airborne measurements are planned for spring.

We like to highlight the aforementioned accesses to MSY site of SMEs (Sunset Laboratory and Aerosol d.o.o.) During these TNA projects the SMES have installed different instrument at MSY for testing their performance in the Mediterranean area. The instruments have been installed for periods longer than three months, under the supervision of the CSIC technical staff.

## 5.16 Hyltemossa, HYM (ULUND)

No TNA has been provided, contrary to what has been foreseen in the contract. The construction of the new co-located ICOS-ACTRIS site at Hyltemossa (HYM) was considerably delayed due primarily to difficulties securing building permits for the ICOS tall tower and buildings. This also caused a subsequent delay for setting up the ACTRIS extensions to the ICOS site. This meant that TNA was not possible in practice until 2018.

## 5.17 Cyprus Atmospheric Observatory, CAO (CYI)

Three TNA projects have been accepted at CAO, 93,5 access days are reported. It is a bit less than initially planned (100 RWD):
1) DEPosition Intercomparison Experiment in Agia Marina Xyliatou, Cyprus (DEPEX, 18.5 access days): This is the first and largest intercomparison of wet/dry samplers currently deployed in world-wide atmospheric networks. This experiment covered a period of 16 months (Feb. 2016 to April 2017) and focused on wet/dry composition of ion and metal measurements performed on-site and in different labs participating.

2) TNA INUIT-CYPRUS (70 access days). Ice Nucleation Research Unit - Cyprus INP Closure Study in April 2016 (http://www.mpic.de/forschung/partikelchemie/gruppe-schneider/projekte/inuit/inuit-cyprus-2017.html) with two main objectives: 1) a physico-chemical characterization of atmospheric ice nucleating particles (INP) in an environment where mineral dust and marine aerosol is present; and 2) a closure between INP concentrations determined experimentally and predicted by models.

3) CADB2 Saharan dust - characterization of absorption and the dust/BC mixing state (5 access days) has been achieved in February 2019. CADB2 aims to determine the contribution of dust to PM10 concentrations and absorption direct radiative efficiency as well as infer the dust and black carbon (BC) mixing state. The Slovenian SME Aerosol d.o.o was implicated as they provided instruments for the project.

## 5.18 Mace Head Research Station, MHD (NUIG)

278 RWD were provided at Mace Head Research Station over the whole project which is twice the minimum quantity of access foreseen.

MHD-1 was withdrawn.

MHD-2: Mace Head station had one TNA action during 2nd reporting period (4 RWD which was reported in RP3) – Long-Term Ice Nucleating Particle Measurements at Mace Head (LINAM). The access was provided to install long-term measurement setup taking the advantage of the station being exposed to contrasting clean marine as well as polluted continental air masses. Mace Head station has continuously operating computer controlled sectoral sampling system enabling automatic control of sampling conditions (wind speed, wind direction and BC concentration) without user intervention (except for sample change). Previous extensive and ample research performed at Mace Head revealed that clean oceanic air masses (190-300 deg sector) occur during 50% of calendar time. A system consisting of PM10 size selective sampling inlet and specific filter holders was setup and tested during TNA action. The system was left to run and operate by NUI Galway researchers and appropriate training was obtained. About 20 samples were already collected and shipped to the lab at Karlsruhe Institute of Technology for analysis.

During RP3, there were three TNA actions at Mace Head: BC-PEAT by the University of Manchester, UK during 16/01-10/02/2018; INP-MH by ISAC CNR, Bologna, Italy during 10-12/04/2018 and parallel joint access CONDENZ:MHD Part1 and 2 by the University of Helsinki and University of Tampere during 20/05-25/07/2018.

MHD-3: BC-PEAT undertaken by University of Manchester (UMan) was focussed on black carbon microphysical properties studied during peat burning season in Ireland by integrating near-surface chemical, physical, optical aerosol properties and cloud droplets. The relationships between black carbon (BC), brown carbon (BrC) and their light-absorbing properties are complex, however they are important to consider as these in part dictates their influences on climate and also the ability of instruments like the multiwavelength Aethalometer to quantify
1) DEPosition Intercomparison Experiment in Agia Marina Xyliatou, Cyprus (DEPEX, 18.5 access days): This is the first and largest intercomparison of wet/dry samplers currently deployed in world-wide atmospheric networks. This experiment covered a period of 16 months (Feb. 2016 to April 2017) and focused on wet/dry composition of ion and metal measurements performed on-site and in different labs participating.

2) TNA INUIT-CYPRUS (70 access days). Ice Nucleation Research Unit - Cyprus INP Closure Study in April 2016 (http://www.mpic.de/forschung/partikelchemie/gruppe-schneider/projekte/inuit/inuit-cyprus-2017.html) with two main objectives: 1) a physico-chemical characterization of atmospheric ice nucleating particles (INP) in an environment where mineral dust and marine aerosol is present; and 2) a closure between INP concentrations determined experimentally and predicted by models.

3) CADB2 Saharan dust - characterization of absorption and the dust/BC mixing state (5 access days) has been achieved in February 2019. CADB2 aims to determine the contribution of dust to PM10 concentrations and absorption direct radiative efficiency as well as infer the dust and black carbon (BC) mixing state. The Slovenian SME Aerosol d.o.o was implicated as they provided instruments for the project.

## 5.18 Mace Head Research Station, MHD (NUIG)

278 RWD were provided at Mace Head Research Station over the whole project which is twice the minimum quantity of access foreseen.

MHD-1 was withdrawn.

MHD-2: Mace Head station had one TNA action during 2nd reporting period (4 RWD which was reported in RP3) – Long-Term Ice Nucleating Particle Measurements at Mace Head (LINAM). The access was provided to install long-term measurement setup taking the advantage of the station being exposed to contrasting clean marine as well as polluted continental air masses. Mace Head station has continuously operating computer controlled sectoral sampling system enabling automatic control of sampling conditions (wind speed, wind direction and BC concentration) without user intervention (except for sample change). Previous extensive and ample research performed at Mace Head revealed that clean oceanic air masses (190-300 deg sector) occur during 50% of calendar time. A system consisting of PM10 size selective sampling inlet and specific filter holders was setup and tested during TNA action. The system was left to run and operate by NUI Galway researchers and appropriate training was obtained. About 20 samples were already collected and shipped to the lab at Karlsruhe Institute of Technology for analysis.

During RP3, there were three TNA actions at Mace Head: BC-PEAT by the University of Manchester, UK during 16/01-10/02/2018; INP-MH by ISAC CNR, Bologna, Italy during 10-12/04/2018 and parallel joint access CONDENZ:MHD Part1 and 2 by the University of Helsinki and University of Tampere during 20/05-25/07/2018.

MHD-3: BC-PEAT undertaken by University of Manchester (UMan) was focussed on black carbon microphysical properties studied during peat burning season in Ireland by integrating near-surface chemical, physical, optical aerosol properties and cloud droplets. The relationships between black carbon (BC), brown carbon (BrC) and their light-absorbing properties are complex, however they are important to consider as these in part dictates their influences on climate and also the ability of instruments like the multiwavelength Aethalometer to quantify
ambient BC and apportion it to sources such as biomass burning and vehicle emissions. Factors to consider include the size, shape and mixing state of BC containing particles and the University of Manchester has investigated techniques for interrogating these parameters and their influences on optical properties. Recently, the UMan team pioneered a technique of combining a Combustion Centrifugal Particle Mass Analyser (CPMA) with a Droplet Measurement Technologies Single Particle Soot Photometer (SP2) to probe mixing state on a single particle level, which has lead to new insights on the behaviors of different soot types and how the non-BC material (the 'coating') perturbs the optical properties. The data generally showed a very high (>95%) single scattering albedo (SSA) overall, which for a remote coastal site, is not surprising. The absorbing component did show some interesting trends, in particular when contrasting the local pollution with that which was transported from further afield, in particular as regards the Absorption Angstrom Exponent (AAE), which showed that the local emissions absorbed relatively more strongly at the shorter wavelengths. This is characteristic of biomass burning and could indicate a significant BrC contribution. A preliminary analysis of the CPMA-SP2 data from an event period appears to show a mixture of thinly and thickly coated smaller particles and some very large thinly coated particles, but analysis of this is ongoing.

MHD-4: INP-MH was undertaken by ISAC CNR team from Bologna, Italy who installed an INP sampler to make concurrent INP sampling as from another TNA action, but using different sampling strategy. That is significant undertaking given large spread of INP data from same locations. Previous studies have revealed the low ice nucleating ability of sea spray relative to terrestrial sources. However, other groups demonstrated that higher INP emissions were located over ocean regions that were expected to be biologically productive. They also observed higher INP number concentrations per volume of phytoplankton-rich seawater compared to seawater with little phytoplankton biomass, proposing a possible biogenic source of INPs from ocean waters. Elucidating this biologicallymediated mechanism for enhanced oceanic INP emissions is needed to accurately estimate atmospheric INP number concentrations and consequent primary ice formation in clouds over the oceans. There are many challenges for observing INP from the ocean source in the ambient atmosphere. As mentioned previously, terrestrial aerosols are more ice nucleation active than sea spray aerosol, making it difficult to distinguish marine organic from terrestrial aerosol influences. Additionally, remote INP number concentrations are low, thus requiring a measurement approach that allows large sampling volumes and has low INP detection limits. This favors offline INP measurements techniques, which are able to reduce the detection limit significantly by increasing the sampling volume. Mace Head is the only station in Europe that allows for sampling of pristine marine air masses from the ocean, for a consistent number of days during the year. Furthermore, at Mace Head a computer-based sampling system allows for a pre-sampling selection of the air masses that is fundamental to operate offline analysis, reducing to a negligible amount influences from the continent and from human activities.

MHD-5 and MHD-6: CONDENZ:MHD was the largest TNA action which involved two research teams from University of Helsinki and University of Tampere, Finland who jointly deployed state-of-the-art instrumentation at Mace Head to study cluster formation in different environments. Previous studies at Mace Head have revealed that the iodic acid (HIO3) plays an important role in the nucleation process in the coastal atmosphere (Sipilä et al., 2016, Nature) where sea bed macro algae releases iodine vapours into the atmosphere. However, a complete picture of the formation pathways of HIO3 from seaweed emitted iodine remains unclear. A state-of-the-art mass spectrometric study was conducted at Mace Head during the summer
ambient BC and apportion it to sources such as biomass burning and vehicle emissions. Factors to consider include the size, shape and mixing state of BC containing particles and the University of Manchester has investigated techniques for interrogating these parameters and their influences on optical properties. Recently, the UMan team pioneered a technique of combining a Combustion Centrifugal Particle Mass Analyser (CPMA) with a Droplet Measurement Technologies Single Particle Soot Photometer (SP2) to probe mixing state on a single particle level, which has lead to new insights on the behaviors of different soot types and how the non-BC material (the 'coating') perturbs the optical properties. The data generally showed a very high (>95%) single scattering albedo (SSA) overall, which for a remote coastal site, is not surprising. The absorbing component did show some interesting trends, in particular when contrasting the local pollution with that which was transported from further afield, in particular as regards the Absorption Angstrom Exponent (AAE), which showed that the local emissions absorbed relatively more strongly at the shorter wavelengths. This is characteristic of biomass burning and could indicate a significant BrC contribution. A preliminary analysis of the CPMA-SP2 data from an event period appears to show a mixture of thinly and thickly coated smaller particles and some very large thinly coated particles, but analysis of this is ongoing.

MHD-4: INP-MH was undertaken by ISAC CNR team from Bologna, Italy who installed an INP sampler to make concurrent INP sampling as from another TNA action, but using different sampling strategy. That is significant undertaking given large spread of INP data from same locations. Previous studies have revealed the low ice nucleating ability of sea spray relative to terrestrial sources. However, other groups demonstrated that higher INP emissions were located over ocean regions that were expected to be biologically productive. They also observed higher INP number concentrations per volume of phytoplankton-rich seawater compared to seawater with little phytoplankton biomass, proposing a possible biogenic source of INPs from ocean waters. Elucidating this biologicallymediated mechanism for enhanced oceanic INP emissions is needed to accurately estimate atmospheric INP number concentrations and consequent primary ice formation in clouds over the oceans. There are many challenges for observing INP from the ocean source in the ambient atmosphere. As mentioned previously, terrestrial aerosols are more ice nucleation active than sea spray aerosol, making it difficult to distinguish marine organic from terrestrial aerosol influences. Additionally, remote INP number concentrations are low, thus requiring a measurement approach that allows large sampling volumes and has low INP detection limits. This favors offline INP measurements techniques, which are able to reduce the detection limit significantly by increasing the sampling volume. Mace Head is the only station in Europe that allows for sampling of pristine marine air masses from the ocean, for a consistent number of days during the year. Furthermore, at Mace Head a computer-based sampling system allows for a pre-sampling selection of the air masses that is fundamental to operate offline analysis, reducing to a negligible amount influences from the continent and from human activities.

MHD-5 and MHD-6: CONDENZ:MHD was the largest TNA action which involved two research teams from University of Helsinki and University of Tampere, Finland who jointly deployed state-of-the-art instrumentation at Mace Head to study cluster formation in different environments. Previous studies at Mace Head have revealed that the iodic acid (HIO3) plays an important role in the nucleation process in the coastal atmosphere (Sipilä et al., 2016, Nature) where sea bed macro algae releases iodine vapours into the atmosphere. However, a complete picture of the formation pathways of HIO3 from seaweed emitted iodine remains unclear. A state-of-the-art mass spectrometric study was conducted at Mace Head during the summer
2018, as a part of the intensive studies of the Finnish Academy CONDENZ project. The major aim of the study is to extend our knowledge on the iodine inferred mediated nucleation mechanisms and associated gas phase chemistry through measurements of a wider range of oxidants and vapours, including nucleating precursors, and to resolve/validate the potential role of iodide oxides and iodine oxy-acids other than iodic acid in aerosol particle nucleation &/growth which were found to be crucial in the CERN CLOUD chamber experiments. Mace Head was considered as a a perfect supreme location for investigating air masses from the open ocean and resolving the key nucleation mechanisms related to emissions of iodine vapours or dimethyl sulphide emitted from oceanic phytoplankton and while at times the location is sometime often influenced by nearby anthropogenic sources. The size of the campaign has been very significant and data analysis is still ongoing which has been a lengthy process given three teams involved.

# 6 Publications and output and resulting from Transnational Access to advanced ACTRIS stations

The publications resulting from ACTRIS-2 TNA are summarized in Table 2: List of Transnational Access publications. Most often, the analysis of the results from TNA activities takes time and the results are only published with some time lag. Therefore, further publications resulting from TNA are expected in the near future.

Each TNA research group benefitting from physical access to the advanced ACTRIS stations submitted a scientific activity report. All scientific reports are publicly accessible on the ACTRIS website (https://www.actris.eu/Documentation/ACTRIS-2IAinH2020(2015-2019)/WPdocuments/TNAOverview/Physical.aspx). The reports summarize for each TNA project the motivation for the planned project and reason for choosing the station, the scientific objectives, the method and experimental set-up, and the preliminary results and first conclusions.
2018, as a part of the intensive studies of the Finnish Academy CONDENZ project. The major aim of the study is to extend our knowledge on the iodine inferred mediated nucleation mechanisms and associated gas phase chemistry through measurements of a wider range of oxidants and vapours, including nucleating precursors, and to resolve/validate the potential role of iodide oxides and iodine oxy-acids other than iodic acid in aerosol particle nucleation &/growth which were found to be crucial in the CERN CLOUD chamber experiments. Mace Head was considered as a a perfect supreme location for investigating air masses from the open ocean and resolving the key nucleation mechanisms related to emissions of iodine vapours or dimethyl sulphide emitted from oceanic phytoplankton and while at times the location is sometime often influenced by nearby anthropogenic sources. The size of the campaign has been very significant and data analysis is still ongoing which has been a lengthy process given three teams involved.

# 6 Publications and output and resulting from Transnational Access to advanced ACTRIS stations

The publications resulting from ACTRIS-2 TNA are summarized in Table 2: List of Transnational Access publications. Most often, the analysis of the results from TNA activities takes time and the results are only published with some time lag. Therefore, further publications resulting from TNA are expected in the near future.

Each TNA research group benefitting from physical access to the advanced ACTRIS stations submitted a scientific activity report. All scientific reports are publicly accessible on the ACTRIS website (https://www.actris.eu/Documentation/ACTRIS-2IAinH2020(2015-2019)/WPdocuments/TNAOverview/Physical.aspx). The reports summarize for each TNA project the motivation for the planned project and reason for choosing the station, the scientific objectives, the method and experimental set-up, and the preliminary results and first conclusions.
<table><caption>Table 2. Publications resulting from TNA-4</caption><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication<fnref n="1" /></td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>MORGANE-MAIDO (MAIDO1-1)</td><td>Vérèmes H., Payen G., Keckhut P., Duflot V., Baray J.-L., Cammas J.-P., Leclair De Bellevue J., Posny F., Evan S., Metzger J.-M., Marquestaut N., Gabarrot F., Meier S., Vömel H. and Dirksen R</td><td>A Raman lidar at Maïdo Observatory (Reunion Island) to measure water vapor in the troposphere and lower stratosphere: calibration and validation</td><td>2016</td><td>Discussion paper</td><td>N</td><td></td><td>https://h al- insu arch</td><td>Y</td></tr><tr><td>HYGROLIRA (GRA-3)</td><td>F. Navas-Guzmán, A. Bedoya, M. J. Granados-Muñoz, P. Ortiz, J. L. Guerrero-Rascado, G. Moreira, N. Kampfer and L. Alados-Arboledas</td><td>Study of aerosol hygroscopicity by combination of liar and microwave radiometer.</td><td>2016</td><td>Conference (poster)</td><td></td><td></td><td>AGU Fall Meeting, San Francisco (USA), 12-16 December 2016.</td><td></td></tr><tr><td>MICROLIRA (CIAO-1)</td><td>Lolli, S., Madonna, F., Rosoldi, M., Campbell, J. R., Welton, E. J., Lewis, J. R., Gu, Y., and Pappalardo, G.</td><td>Impact of varying lidar measurement and data processing techniques in evaluating cirrus cloud and aerosol direct radiative effects</td><td>2018</td><td>Article in journal</td><td>Y</td><td>https://doi.o rg/10.5194/ amt-11- 1639-2018</td><td>Atmos. Meas. Tech., 11, 1639-1651, 2018</td><td>Y</td></tr><tr><td>INTERACT II (CIAO-2)</td><td>Madonna, F., Rosoldi, M., Lolli, S., Amato, F., Vande Hey, J., Dhillon, R., Zheng, Y., Brettle, M., and Pappalardo, G.</td><td>Intercomparison of aerosol measurements performed with multi-wavelength Raman lidars, automatic lidars and ceilometers in the frame of INTERACT-II campaign</td><td>2018</td><td>Article in journal</td><td>Y</td><td>https://doi.o rg/10.5194/ amt-11- 2459-2018</td><td>Atmos. Meas. Tech., 11, 2459-2475</td><td>Y</td></tr></tbody></table>

<footnote n="1">¹ Article in journal, Publication in conference proceeding/workshop, Book/Monograph, Chapters in book, Thesis/dissertation.</footnote>
<table><caption>Table 2. Publications resulting from TNA-4</caption><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication<fnref n="1" /></td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>MORGANE-MAIDO (MAIDO1-1)</td><td>Vérèmes H., Payen G., Keckhut P., Duflot V., Baray J.-L., Cammas J.-P., Leclair De Bellevue J., Posny F., Evan S., Metzger J.-M., Marquestaut N., Gabarrot F., Meier S., Vömel H. and Dirksen R</td><td>A Raman lidar at Maïdo Observatory (Reunion Island) to measure water vapor in the troposphere and lower stratosphere: calibration and validation</td><td>2016</td><td>Discussion paper</td><td>N</td><td></td><td>https://h al- insu arch</td><td>Y</td></tr><tr><td>HYGROLIRA (GRA-3)</td><td>F. Navas-Guzmán, A. Bedoya, M. J. Granados-Muñoz, P. Ortiz, J. L. Guerrero-Rascado, G. Moreira, N. Kampfer and L. Alados-Arboledas</td><td>Study of aerosol hygroscopicity by combination of liar and microwave radiometer.</td><td>2016</td><td>Conference (poster)</td><td></td><td></td><td>AGU Fall Meeting, San Francisco (USA), 12-16 December 2016.</td><td></td></tr><tr><td>MICROLIRA (CIAO-1)</td><td>Lolli, S., Madonna, F., Rosoldi, M., Campbell, J. R., Welton, E. J., Lewis, J. R., Gu, Y., and Pappalardo, G.</td><td>Impact of varying lidar measurement and data processing techniques in evaluating cirrus cloud and aerosol direct radiative effects</td><td>2018</td><td>Article in journal</td><td>Y</td><td>https://doi.o rg/10.5194/ amt-11- 1639-2018</td><td>Atmos. Meas. Tech., 11, 1639-1651, 2018</td><td>Y</td></tr><tr><td>INTERACT II (CIAO-2)</td><td>Madonna, F., Rosoldi, M., Lolli, S., Amato, F., Vande Hey, J., Dhillon, R., Zheng, Y., Brettle, M., and Pappalardo, G.</td><td>Intercomparison of aerosol measurements performed with multi-wavelength Raman lidars, automatic lidars and ceilometers in the frame of INTERACT-II campaign</td><td>2018</td><td>Article in journal</td><td>Y</td><td>https://doi.o rg/10.5194/ amt-11- 2459-2018</td><td>Atmos. Meas. Tech., 11, 2459-2475</td><td>Y</td></tr></tbody></table>

<footnote n="1">¹ Article in journal, Publication in conference proceeding/workshop, Book/Monograph, Chapters in book, Thesis/dissertation.</footnote>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>HYGROLIRA (GRA-3)</td><td>Bedoya-Velásquez, A. E., Navas-Guzmán, F., Granados-Muñoz, M. J., Titos, G., Roman, R., Casquero-Vera, J. A., Ortiz-Amezcua, P., Benavent-Oltra, J. A., de Arruda Moreira, G., Montilla-Rosero, E., Hoyos Ortiz, C. D., Artíñano, B., Coz, E., Alados-Arboledas, L., and Guerrero-Rascado, J. L</td><td>Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in-situ instrumentation</td><td>2017</td><td>Article in journal</td><td>Y</td><td>https://doi.org/10.5194/acp-2017-993</td><td>Atmos. Chem. Phys. Discuss https://doi.org/10.5194/acp-2017-993</td><td>Y</td></tr><tr><td>HYGROLIRA (GRA-3)</td><td>Andres Bedoya, Francisco Navas-Guzmán, Juan Luis Guerrero-Rascado, Lucas Alados-Arboledas</td><td>Validation and statistical analysis of temperature, humidity profiles and Integrated Water Vapor (IWV) from microwave measurements over Granada (Spain)</td><td>2017</td><td>Publication in conference proceeding</td><td>Y</td><td></td><td>Geophysical Research Abstracts Vol 19</td><td>Y</td></tr><tr><td>RFOFC (SIR-2)</td><td>Felipe Toledo</td><td>BASTA-MOBILE Cloud Radar Calibration</td><td>2017</td><td>MS Thesis</td><td></td><td></td><td></td><td></td></tr><tr><td>SYR-SIR (SIR-3)</td><td>JC Dupont, M. Haeffelin (IPSL), E. Wærsted (LMD), J. Delanoe (LATMOS), JB. Renard (LPC2E), J. Preissler, C. O'Dowd (Univ. Galway).</td><td>Evaluation of fog and low stratus cloud microphysical properties derived from in-situ sensor, cloud radar and SYRSOC algorithm</td><td>2018</td><td>Article in journal</td><td></td><td>doi:10.3390/atmos9050169</td><td>Atmosphere 2018, 9, 169</td><td>Y</td></tr><tr><td>LESFOG (SIR-6)</td><td>Wærsted, EG, Haeffelin, M, Steeneveld, G-J, Dupont, J-C</td><td>Understanding the dissipation of continental fog by analysing the LWP budget using idealized LES and in situ observations</td><td>2018</td><td>Article in journal</td><td>Y</td><td>https://doi.org/10.1002/qj.3465</td><td>QJR Meteorol Soc. 2019; 145: 784</td><td></td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>HYGROLIRA (GRA-3)</td><td>Bedoya-Velásquez, A. E., Navas-Guzmán, F., Granados-Muñoz, M. J., Titos, G., Roman, R., Casquero-Vera, J. A., Ortiz-Amezcua, P., Benavent-Oltra, J. A., de Arruda Moreira, G., Montilla-Rosero, E., Hoyos Ortiz, C. D., Artíñano, B., Coz, E., Alados-Arboledas, L., and Guerrero-Rascado, J. L</td><td>Hygroscopic growth study in the framework of EARLINET during the SLOPE I campaign: synergy of remote sensing and in-situ instrumentation</td><td>2017</td><td>Article in journal</td><td>Y</td><td>https://doi.org/10.5194/acp-2017-993</td><td>Atmos. Chem. Phys. Discuss https://doi.org/10.5194/acp-2017-993</td><td>Y</td></tr><tr><td>HYGROLIRA (GRA-3)</td><td>Andres Bedoya, Francisco Navas-Guzmán, Juan Luis Guerrero-Rascado, Lucas Alados-Arboledas</td><td>Validation and statistical analysis of temperature, humidity profiles and Integrated Water Vapor (IWV) from microwave measurements over Granada (Spain)</td><td>2017</td><td>Publication in conference proceeding</td><td>Y</td><td></td><td>Geophysical Research Abstracts Vol 19</td><td>Y</td></tr><tr><td>RFOFC (SIR-2)</td><td>Felipe Toledo</td><td>BASTA-MOBILE Cloud Radar Calibration</td><td>2017</td><td>MS Thesis</td><td></td><td></td><td></td><td></td></tr><tr><td>SYR-SIR (SIR-3)</td><td>JC Dupont, M. Haeffelin (IPSL), E. Wærsted (LMD), J. Delanoe (LATMOS), JB. Renard (LPC2E), J. Preissler, C. O'Dowd (Univ. Galway).</td><td>Evaluation of fog and low stratus cloud microphysical properties derived from in-situ sensor, cloud radar and SYRSOC algorithm</td><td>2018</td><td>Article in journal</td><td></td><td>doi:10.3390/atmos9050169</td><td>Atmosphere 2018, 9, 169</td><td>Y</td></tr><tr><td>LESFOG (SIR-6)</td><td>Wærsted, EG, Haeffelin, M, Steeneveld, G-J, Dupont, J-C</td><td>Understanding the dissipation of continental fog by analysing the LWP budget using idealized LES and in situ observations</td><td>2018</td><td>Article in journal</td><td>Y</td><td>https://doi.org/10.1002/qj.3465</td><td>QJR Meteorol Soc. 2019; 145: 784</td><td></td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>PaSCIM (CMN-4)</td><td>Girotto, Giulia; China, Swarup; Bhandari, Janarjan; Gorkowski, Kyle; Scarnato, Barbara; Capek, Tyler; Marinoni, Angela; Veghte, Daniel; Kulkarni, Gourihar; Aiken, Allison; Dubey, Manvendra; Mazzoleni, Claudio</td><td>Fractal-like Tar Ball Aggregates from Wildfire Smoke</td><td>2018</td><td>Article in journal</td><td>Y</td><td>https://doi.org/10.1021/acs.estlet.t.8b00229</td><td>Environmental Science & Technology Letters</td><td></td></tr><tr><td>THE BC SIZE (KOS-1)</td><td>F. Esposito, G. Pavese, M. Calvello, A. H. Smejkalova, M. Vana</td><td>ACTRIS2-TNA, the project "The_BC_size" a Kosetice (CZ): preliminary results"-</td><td>2018</td><td>Publication in conference proceedings</td><td>Y</td><td>http://www.pmm2018.it/wp-content/uploa ds/2018/06/li</td><td>ISBN code 978-88-942135-1-5.</td><td></td></tr><tr><td>PACE 2017 (PAL-2)</td><td>Brus D, Neitola K, Doulgeris K, Hirsikko A, Keleshis C, Vouoterakos P, Schaufelbereger G, Weiss M, Sciare J, Lihavainen H</td><td>Combining airborne and ground based measurements of aerosol and cloud properties - Pallas Cloud Experiment (PaCE 2017)</td><td>2018</td><td>Publication in conference proceedings</td><td>Y</td><td>Proceedings of ISARRA 2018, Boulder CO, USA</td><td></td><td></td></tr><tr><td>INUIT (CAO-3)</td><td>Mamali, D., Marinou, E., Sciare, J., Pikridas, M., Kokkalis, P., Kottas, M., Binietoglou, I., Tsekeri, A., Keleshis, C., Engelmann, R., Baars, H., Ansmann, A., Amiridis, V., Russchenberg, H., and Biskos, G</td><td>Vertical profiles of aerosol mass concentrations observed during dust events by unmanned airborne in-situ and remote sensing instruments</td><td>2018</td><td>Journal</td><td>Y</td><td>https://doi.org/10.5194/amt-2017-422</td><td>Atmos. Meas. Tech. Discuss</td><td>Y</td></tr><tr><td>INUIT (CAO-3)</td><td>Marinou, E., Tesche M., Nenes, A., Ansmann, A., Schrod, J., Mamali, D., Tsekeri, A., Pikridas, M., Baars, H., Engelmann, R., Voudouri, K.-A., Solomos, S., Sciare, J., Groß, S., and Amiridis, V.:</td><td>Retrieval of ice nucleating particle concentrations from lidar observations: Comparison with airborne in-situ measurements from UAVs</td><td>2019</td><td>Journal</td><td>yes</td><td>https://doi.org/10.5194/acp-2018-1203</td><td>Atmos. Chem. Phys.</td><td>yes</td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>PaSCIM (CMN-4)</td><td>Girotto, Giulia; China, Swarup; Bhandari, Janarjan; Gorkowski, Kyle; Scarnato, Barbara; Capek, Tyler; Marinoni, Angela; Veghte, Daniel; Kulkarni, Gourihar; Aiken, Allison; Dubey, Manvendra; Mazzoleni, Claudio</td><td>Fractal-like Tar Ball Aggregates from Wildfire Smoke</td><td>2018</td><td>Article in journal</td><td>Y</td><td>https://doi.org/10.1021/acs.estlet.t.8b00229</td><td>Environmental Science & Technology Letters</td><td></td></tr><tr><td>THE BC SIZE (KOS-1)</td><td>F. Esposito, G. Pavese, M. Calvello, A. H. Smejkalova, M. Vana</td><td>ACTRIS2-TNA, the project "The_BC_size" a Kosetice (CZ): preliminary results"-</td><td>2018</td><td>Publication in conference proceedings</td><td>Y</td><td>http://www.pmm2018.it/wp-content/uploa ds/2018/06/li</td><td>ISBN code 978-88-942135-1-5.</td><td></td></tr><tr><td>PACE 2017 (PAL-2)</td><td>Brus D, Neitola K, Doulgeris K, Hirsikko A, Keleshis C, Vouoterakos P, Schaufelbereger G, Weiss M, Sciare J, Lihavainen H</td><td>Combining airborne and ground based measurements of aerosol and cloud properties - Pallas Cloud Experiment (PaCE 2017)</td><td>2018</td><td>Publication in conference proceedings</td><td>Y</td><td>Proceedings of ISARRA 2018, Boulder CO, USA</td><td></td><td></td></tr><tr><td>INUIT (CAO-3)</td><td>Mamali, D., Marinou, E., Sciare, J., Pikridas, M., Kokkalis, P., Kottas, M., Binietoglou, I., Tsekeri, A., Keleshis, C., Engelmann, R., Baars, H., Ansmann, A., Amiridis, V., Russchenberg, H., and Biskos, G</td><td>Vertical profiles of aerosol mass concentrations observed during dust events by unmanned airborne in-situ and remote sensing instruments</td><td>2018</td><td>Journal</td><td>Y</td><td>https://doi.org/10.5194/amt-2017-422</td><td>Atmos. Meas. Tech. Discuss</td><td>Y</td></tr><tr><td>INUIT (CAO-3)</td><td>Marinou, E., Tesche M., Nenes, A., Ansmann, A., Schrod, J., Mamali, D., Tsekeri, A., Pikridas, M., Baars, H., Engelmann, R., Voudouri, K.-A., Solomos, S., Sciare, J., Groß, S., and Amiridis, V.:</td><td>Retrieval of ice nucleating particle concentrations from lidar observations: Comparison with airborne in-situ measurements from UAVs</td><td>2019</td><td>Journal</td><td>yes</td><td>https://doi.org/10.5194/acp-2018-1203</td><td>Atmos. Chem. Phys.</td><td>yes</td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>INUIT-2017-MPIC (JFJ-5)</td><td>Schmidt, S., Schneider, J., Klimach, T., Mertes, S., Schenk, L. P., Kupiszewski, P., Curtius, J., and Borrmann, S.</td><td>Online single particle analysis of ice particle residuals from mountain-top mixed-phase clouds using laboratory derived particle type assignment</td><td>2017</td><td>Journal</td><td>Y</td><td>10.5194/acp-17-575-2017</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr><tr><td>INUIT-2017-MPIC (JFJ-5)</td><td>Eriksen Hammer, S., Mertes, S., Schneider, J., Ebert, M., Kandler, K., and Weinbruch, S.</td><td>Composition of ice particle residuals in mixed-phase clouds at Jungfraujoch (Switzerland): enrichment and depletion of particle groups relative to total aerosol</td><td>2018</td><td>Journal</td><td>Y</td><td>10.5194/acp-18-13987-2018</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr><tr><td>OCTAVE-ISM (MAIDO7)</td><td>Bert Verreycken, Crist Amelynck, Jerome Brioude, Maité Bauwens, Aurélie Colomb, Martine De Mazière, Stephanie Evan, Christian Hermans, Nicolas Kumps, Jean-Marc Metzger, Jean-François Müller, Niels Schoon, Trissevgeni Stavrakou, Pierre Tulet, and Corinne Vigouroux</td><td><b>OCTAVE: First PTR-MS measurements at La Réunion Island: Influences of biomass burning and backtrajectory calculations</b></td><td>2018</td><td>Publication in conference proceedings</td><td>Y</td><td>Geophysical Research Abstracts Vol. 20, EGU2018-9655, 2018, EGU General Assembly 2018.</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr><tr><td>OCTAVE-ISM (MAIDO7)</td><td><b>Bert Verreyken</b>, Crist Amelynck, Niels Schoon, Trissevgeni Stavrakou, Jean-François Müller, Maité Bauwens, Dominique Fonteyn, Corinne Vigouroux, Nicolas Kumps, Martine De Mazière, Jean-Marc Metzger, Jérôme Brioude, Aurélie Colomb, Manon Rocco, and Valérie Gros</td><td><b>In-situ OVOC measurements in the tropical marine atmosphere for the OCTAVE project</b></td><td>2019</td><td>Publication in conference proceedings</td><td>Y</td><td>Geophysical Research Abstracts Vol. 21, EGU2019-2764-1, 2018, EGU General Assembly</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr><tr><td>BVOC-NPF (SMR1)</td><td>Fischer, L., Breitenlechner, M., Canaval, E., Hansel A.</td><td>First ambient flux measurements with the novel PTR3-TOF on top of a measurement tower in Hyytiälä, Finland</td><td>2019</td><td>Publication in conference proceeding</td><td>N</td><td>8th Int. Conf. on PTR-MS</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>INUIT-2017-MPIC (JFJ-5)</td><td>Schmidt, S., Schneider, J., Klimach, T., Mertes, S., Schenk, L. P., Kupiszewski, P., Curtius, J., and Borrmann, S.</td><td>Online single particle analysis of ice particle residuals from mountain-top mixed-phase clouds using laboratory derived particle type assignment</td><td>2017</td><td>Journal</td><td>Y</td><td>10.5194/acp-17-575-2017</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr><tr><td>INUIT-2017-MPIC (JFJ-5)</td><td>Eriksen Hammer, S., Mertes, S., Schneider, J., Ebert, M., Kandler, K., and Weinbruch, S.</td><td>Composition of ice particle residuals in mixed-phase clouds at Jungfraujoch (Switzerland): enrichment and depletion of particle groups relative to total aerosol</td><td>2018</td><td>Journal</td><td>Y</td><td>10.5194/acp-18-13987-2018</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr><tr><td>OCTAVE-ISM (MAIDO7)</td><td>Bert Verreycken, Crist Amelynck, Jerome Brioude, Maité Bauwens, Aurélie Colomb, Martine De Mazière, Stephanie Evan, Christian Hermans, Nicolas Kumps, Jean-Marc Metzger, Jean-François Müller, Niels Schoon, Trissevgeni Stavrakou, Pierre Tulet, and Corinne Vigouroux</td><td><strong>OCTAVE: First PTR-MS measurements at La Réunion Island: Influences of biomass burning and backtrajectory calculations</strong></td><td>2018</td><td>Publication in conference proceedings</td><td>Y</td><td>Geophysical Research Abstracts Vol. 20, EGU2018-9655, 2018, EGU General Assembly 2018.</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr><tr><td>OCTAVE-ISM (MAIDO7)</td><td><strong>Bert Verreyken</strong>, Crist Amelynck, Niels Schoon, Trissevgeni Stavrakou, Jean-François Müller, Maité Bauwens, Dominique Fonteyn, Corinne Vigouroux, Nicolas Kumps, Martine De Mazière, Jean-Marc Metzger, Jérôme Brioude, Aurélie Colomb, Manon Rocco, and Valérie Gros</td><td><strong>In-situ OVOC measurements in the tropical marine atmosphere for the OCTAVE project</strong></td><td>2019</td><td>Publication in conference proceedings</td><td>Y</td><td>Geophysical Research Abstracts Vol. 21, EGU2019-2764-1, 2018, EGU General Assembly</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr><tr><td>BVOC-NPF (SMR1)</td><td>Fischer, L., Breitenlechner, M., Canaval, E., Hansel A.</td><td>First ambient flux measurements with the novel PTR3-TOF on top of a measurement tower in Hyytiälä, Finland</td><td>2019</td><td>Publication in conference proceeding</td><td>N</td><td>8th Int. Conf. on PTR-MS</td><td>Atoms. Chem. Phys.</td><td>Y</td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>CLACE 2017(JFJ7)</td><td>Gute, E., Lacher, L., Kanji, Z.A., Kohl, R., Curtius, J., Weber, D., Bingemer, H., Clemen, H.-C., Schneider, J., Gysel-Beer, M., Ferguson, S.T., and Abbatt, J.</td><td>Field evaluation of a Portable Fine Particle Concentrator (PFPC) for ice nucleating particle measurements</td><td>2019</td><td>Article in Journal</td><td>Y</td><td>https://doi.org/10.1080/02786826.2019.162634</td><td>Aerosol Science and Technology</td><td></td></tr><tr><td>IPA-SLOPE-II (GRA5)</td><td>Mogo et al</td><td>Individual particle analysis of atmospheric aerosols at Sierra Nevada, during SLOPE2 field campaign</td><td>To be submitted Sept 2019</td><td>Article in Journal</td><td>Y</td><td></td><td></td><td></td></tr><tr><td>CADB2 (CAO-6)</td><td>Drinovec, L., B. Višić, M. Remškar, I. Stavroulas, M. Pikridas, F. Unga, J. Sciare, G. Močnik</td><td>New method for on-line determination of mineral dust concentration</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>European Aerosol Conference, EAC2019</td><td></td></tr><tr><td>DONA / MethodON (SIR-14 & SIR-15)</td><td>A. Albinet, J.-E. Petit, A. Lambe, A. Kalogridis, L. Heikkinen, F. Graeffe, M. Cirtog, A. Féron, J. Allan, Z. Bibi, T. Amodeo, N. Karoski, R. Aujay-Plouzeau, L. Meunier, C. Noblet, F. Lestremau, J.-L. Besombes, V. Gros, N. Bonnaire, R. Sarda-Estève, F. Truong, M. Ehn, T. Jokinen, M. Aurela, M. Maasikmets, C. Marin, L. Marmureanu, A. Eriksson, E. Ahlberg, E. Freney, M.C. Minguillón, P. Croteau, J. Jayne, L. Williams, O. Favez</td><td>Overview of the ACMCC Particulate Organonitrates (pON) Experiment</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>European Aerosol Conference, EAC2019</td><td></td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>CLACE 2017(JFJ7)</td><td>Gute, E., Lacher, L., Kanji, Z.A., Kohl, R., Curtius, J., Weber, D., Bingemer, H., Clemen, H.-C., Schneider, J., Gysel-Beer, M., Ferguson, S.T., and Abbatt, J.</td><td>Field evaluation of a Portable Fine Particle Concentrator (PFPC) for ice nucleating particle measurements</td><td>2019</td><td>Article in Journal</td><td>Y</td><td>https://doi.org/10.1080/02786826.2019.162634</td><td>Aerosol Science and Technology</td><td></td></tr><tr><td>IPA-SLOPE-II (GRA5)</td><td>Mogo et al</td><td>Individual particle analysis of atmospheric aerosols at Sierra Nevada, during SLOPE2 field campaign</td><td>To be submitted Sept 2019</td><td>Article in Journal</td><td>Y</td><td></td><td></td><td></td></tr><tr><td>CADB2 (CAO-6)</td><td>Drinovec, L., B. Višić, M. Remškar, I. Stavroulas, M. Pikridas, F. Unga, J. Sciare, G. Močnik</td><td>New method for on-line determination of mineral dust concentration</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>European Aerosol Conference, EAC2019</td><td></td></tr><tr><td>DONA / MethodON (SIR-14 & SIR-15)</td><td>A. Albinet, J.-E. Petit, A. Lambe, A. Kalogridis, L. Heikkinen, F. Graeffe, M. Cirtog, A. Féron, J. Allan, Z. Bibi, T. Amodeo, N. Karoski, R. Aujay-Plouzeau, L. Meunier, C. Noblet, F. Lestremau, J.-L. Besombes, V. Gros, N. Bonnaire, R. Sarda-Estève, F. Truong, M. Ehn, T. Jokinen, M. Aurela, M. Maasikmets, C. Marin, L. Marmureanu, A. Eriksson, E. Ahlberg, E. Freney, M.C. Minguillón, P. Croteau, J. Jayne, L. Williams, O. Favez</td><td>Overview of the ACMCC Particulate Organonitrates (pON) Experiment</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>European Aerosol Conference, EAC2019</td><td></td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>DONA / MethodON (SIR-14 & SIR-15)</td><td>A. Albinet, J.-E. Petit, A. Lambe, A. Kalogridis, L. Heikkinen, F. Graeffe, M. Cirtog, A. Féron, J. Allan, Z. Bibi, T. Amodeo, N. Karoski, R. Aujay-Plouzeau, L. Meunier, C. Noblet, F. Lestremau, J.-L. Besombes, V. Gros, N. Bonnaire, R. Sarda-Estève, F. Truong, M. Ehn, T. Jokinen, M. Aurela, M. Maasikmets, C. Marin, L. Marmureanu, A. Eriksson, E. Ahlberg, E. Freney, M.C. Minguillón, P. Croteau, J. Jayne, L. Williams, O. Favez</td><td>Overview of the ACMCC particulate organonitrates (pON) intercomparison</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>Aerosol Research 37th Annual Conference, AAAR2019</td><td></td></tr><tr><td>DONA / MethodON (SIR-14 & SIR-15)</td><td>A. Kalogridis, J.-E. Petit, A. Albinet, A. Lambe, L. Heikkinen, F. Graeffe, M. Cirtog, A. Féron, J. Allan, Z. Bibi, T. Amodeo, C. Noblet, N. Karoski, R. Aujay-Plouzeau, L. Meunier, V. Gros, N. Bonnaire, R. Sarda-Estève, F. Truong, M. Ehn, T. Jokinen, M. Aurela, M. Maasikmets, C. Marin, L. Marmureanu, A. Eriksson, E. Ahlberg, E. Freney, M.C. Minguillón, M. Gini, K. Eleftheriadis, P. Croteau, J. Jayne, L. Williams, O. Favez</td><td>Intercomparison of AMS and ACSM measurements for particulate organonitrates (pON)</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>Aerosol Research 37th Annual Conference, AAAR2019</td><td></td></tr><tr><td>DONA / MethodON (SIR-14 & SIR-15)</td><td>J.-E. Petit, A. Albinet, A. Lambe, A. Kalogridis, L. Heikkinen, F. Graeffe, M. Cirtog, A. Féron, J. Allan, Z. Bibi, T. Amodeo, N. Karoski, R. Aujay-Plouzeau, L. Meunier, V. Gros, N. Bonnaire, R. Sarda-Estève, F. Truong, M. Ehn, T. Jokinen, M. Aurela, M. Maasikmets, C. Marin, L. Marmureanu, A. Eriksson, E. Ahlberg, E. Freney, M.C. Minguillón, P. Croteau, J. Jayne, L. Williams, O. Favez</td><td>Evaluation of the density and absorption properties of generated organonitrate particles (pON)</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>Aerosol Research 37th Annual Conference, AAAR2019</td><td></td></tr></tbody></table>
<table><thead><tr><td>TNA Acronym</td><td>Authors</td><td>Title</td><td>Year of publication</td><td>Type of publication¹</td><td>Peer-reviewed</td><td>DOI</td><td>Publication references</td><td>Open Access</td></tr></thead><tbody><tr><td>DONA / MethodON (SIR-14 & SIR-15)</td><td>A. Albinet, J.-E. Petit, A. Lambe, A. Kalogridis, L. Heikkinen, F. Graeffe, M. Cirtog, A. Féron, J. Allan, Z. Bibi, T. Amodeo, N. Karoski, R. Aujay-Plouzeau, L. Meunier, C. Noblet, F. Lestremau, J.-L. Besombes, V. Gros, N. Bonnaire, R. Sarda-Estève, F. Truong, M. Ehn, T. Jokinen, M. Aurela, M. Maasikmets, C. Marin, L. Marmureanu, A. Eriksson, E. Ahlberg, E. Freney, M.C. Minguillón, P. Croteau, J. Jayne, L. Williams, O. Favez</td><td>Overview of the ACMCC particulate organonitrates (pON) intercomparison</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>Aerosol Research 37th Annual Conference, AAAR2019</td><td></td></tr><tr><td>DONA / MethodON (SIR-14 & SIR-15)</td><td>A. Kalogridis, J.-E. Petit, A. Albinet, A. Lambe, L. Heikkinen, F. Graeffe, M. Cirtog, A. Féron, J. Allan, Z. Bibi, T. Amodeo, C. Noblet, N. Karoski, R. Aujay-Plouzeau, L. Meunier, V. Gros, N. Bonnaire, R. Sarda-Estève, F. Truong, M. Ehn, T. Jokinen, M. Aurela, M. Maasikmets, C. Marin, L. Marmureanu, A. Eriksson, E. Ahlberg, E. Freney, M.C. Minguillón, M. Gini, K. Eleftheriadis, P. Croteau, J. Jayne, L. Williams, O. Favez</td><td>Intercomparison of AMS and ACSM measurements for particulate organonitrates (pON)</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>Aerosol Research 37th Annual Conference, AAAR2019</td><td></td></tr><tr><td>DONA / MethodON (SIR-14 & SIR-15)</td><td>J.-E. Petit, A. Albinet, A. Lambe, A. Kalogridis, L. Heikkinen, F. Graeffe, M. Cirtog, A. Féron, J. Allan, Z. Bibi, T. Amodeo, N. Karoski, R. Aujay-Plouzeau, L. Meunier, V. Gros, N. Bonnaire, R. Sarda-Estève, F. Truong, M. Ehn, T. Jokinen, M. Aurela, M. Maasikmets, C. Marin, L. Marmureanu, A. Eriksson, E. Ahlberg, E. Freney, M.C. Minguillón, P. Croteau, J. Jayne, L. Williams, O. Favez</td><td>Evaluation of the density and absorption properties of generated organonitrate particles (pON)</td><td>2019</td><td>Publication in conference proceedings</td><td></td><td></td><td>Aerosol Research 37th Annual Conference, AAAR2019</td><td></td></tr></tbody></table>
# Appendix A: Document templates used within the process of TNA to observation facilities – Application form

1

<figure><img src="image_18.png" /></figure>

## Proposal form for ACTRIS-2 Trans-National Access (TNA)

<figure><img src="image_19.png" /></figure>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 – Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
# Appendix A: Document templates used within the process of TNA to observation facilities – Application form

1

<figure><img src="image_18.png" /></figure>

## Proposal form for ACTRIS-2 Trans-National Access (TNA)

<figure><img src="image_19.png" /></figure>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 – Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
4. Project description

* Scientific objectives (max. 250 words)

* Technical description of work to be performed (max. 250 words)

* Data management

Data from measurements at ACTRIS observational facilities are archived in the ACTRIS Data Centre for long-term storage and access. The ACTRIS Data Centre also offers to archive data resulting from TNA activities from additional instrument(s) at the site.

If additional instrument(s) are deployed during the project, please include a list of instruments you plan to bring to the site during the TNA: (expand table if necessary)

<table><thead><tr><td>Additional instrument(s)</td><td>Resulting variable(s)</td><td>Principle investigator (Name, E-mail)</td></tr></thead><tbody><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></tbody></table>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 – Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
4. Project description

* Scientific objectives (max. 250 words)

* Technical description of work to be performed (max. 250 words)

* Data management

Data from measurements at ACTRIS observational facilities are archived in the ACTRIS Data Centre for long-term storage and access. The ACTRIS Data Centre also offers to archive data resulting from TNA activities from additional instrument(s) at the site.

If additional instrument(s) are deployed during the project, please include a list of instruments you plan to bring to the site during the TNA: (expand table if necessary)

<table><thead><tr><td>Additional instrument(s)</td><td>Resulting variable(s)</td><td>Principle investigator (Name, E-mail)</td></tr></thead><tbody><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></tbody></table>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 – Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
<table><tr><td>Do you plan to submit measurement data resulting from your TNA to the ACTRIS Data Centre? (E.g., from other additional measurements at the site during the TNA, from additional instrument(s) deployed during the TNA, etc.)</td><td></td></tr></table>

<table><tr><td>Please describe the data resulting from the TNA in more details (unless already included under scientific objectives above):</td><td></td></tr></table>

## 5. Participants Employing Organization / Home Institution

<table><thead><tr><td>First and LAST name</td><td>Email</td><td>Institution name</td><td>Institution legal status</td><td>Institution country</td></tr></thead><tbody><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr></tbody></table>

## 6. Participants' information

<table><thead><tr><td>First and LAST name</td><td>Gender</td><td>Activity domain</td><td>Position</td><td>Nationality</td><td>New user</td><td>Start of TNA dd/mm/yy</td><td>End of TNA dd/mm/yy</td><td>Duration of TNA</td></tr></thead><tbody><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td colspan="8">Total number of user days:</td><td>0,0</td></tr></tbody></table>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
<table><thead><tr><th colspan="3">7. Estimated project costs (in EUR, no decimals)</th></tr></thead><tbody><tr><th scope="row">Travel costs per person (A)</th><td>Total number of participants (B)</td><td>Total travel costs (C= A x B)</td></tr><tr><td></td><td></td><td>0</td></tr><tr><th scope="row">Daily subsistence costs per person (D)</th><td>Total number of user days (total from 6) (E)</td><td>Total subsistence costs (F= D x E)</td></tr><tr><td></td><td>0,0</td><td>0,0</td></tr><tr><td colspan="2">Total estimated project costs (G= C + F):</td><td>0,0</td></tr><tr><td colspan="2">Financial support requested to ACTRIS-2:</td><td></td></tr><tr><th colspan="3">8. Comments (optional)</th></tr></tbody></table>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
<table><thead><tr><th colspan="3">7. Estimated project costs (in EUR, no decimals)</th></tr></thead><tbody><tr><th scope="row">Travel costs per person (A)</th><td>Total number of participants (B)</td><td>Total travel costs (C= A x B)</td></tr><tr><td></td><td></td><td>0</td></tr><tr><th scope="row">Daily subsistence costs per person (D)</th><td>Total number of user days (total from 6) (E)</td><td>Total subsistence costs (F= D x E)</td></tr><tr><td></td><td>0,0</td><td>0,0</td></tr><tr><td colspan="2">Total estimated project costs (G= C + F):</td><td>0,0</td></tr><tr><td colspan="2">Financial support requested to ACTRIS-2:</td><td></td></tr><tr><th colspan="3">8. Comments (optional)</th></tr></tbody></table>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
## 1. Principal Investigator

The Principal Investigator (PI) is the person responsible for the project who acts as contact of the proposal for the research team (user group). The Principal Investigator is expected to participate as a user.

### PI Research status

Please select:

* UND = Undergraduate

* PGR = Post-graduate, student with 1st university degree

* PDOC = Post-Doctoral Researcher

* TEC = Technician

* EXP = Experienced, professional researcher

## 2. Project information

### Integration in ACTRIS-2 activity

Please select:

* Profiling of aerosols (including combined Lidar and near-surface activities)

* Profiling of clouds and aerosol-cloud interactions

* Near-surface chemical, physical, optical aerosol properties and cloud droplets

* Near-surface trace gas concentrations

### TNA type

Specify if the planned project aims at providing training to young researchers or at adding value to the infrastructure (mobility of experts). The review will take into consideration a potential training benefit to young researchers or the expertise of the user group. Both training and mobility must be sufficiently demonstrated in the section "Technical description".

### Host infrastructure

Please select the host infrastructure from the following list of TNA providing observations facilities:

<table><thead><tr><td></td><td></td><td>Access provider</td><td>Email</td></tr></thead><tbody><tr><td>1-CIAO</td><td>CNR IMAA Atmospheric Observatory, CNR, Italy</td><td>Lucia Mona</td><td>Lucia.mona@imaa.cnr.it</td></tr><tr><td>2-CMN</td><td>Monte Cimone taking advantage of Po Valley facility, CNR, Italy</td><td>A. Marioni</td><td>a.marinoni@isac.cnr.it</td></tr><tr><td>3-SIR</td><td>SIRTA Atmospheric Research Observatory, CNRS, France</td><td>Martial Haeffelin</td><td>Martial.Haeffelin@lmd.polytechnique.fr</td></tr><tr><td>4-PUY</td><td>Puy de Dôme, CNRS, France</td><td>Karine Sellegri</td><td>sellegri@opgc.univ-bpclermont.fr</td></tr><tr><td>5-MAIDO - OPAR</td><td>Maido Observatory - Observatoire de Physique de l'Atmosphère à La Réunion, France</td><td>Jean-Pierre Camas</td><td>jean-pierre.cammas@univ-reunion.fr</td></tr><tr><td>6-SMR</td><td>Station for Measuring Ecosystem - Atmosphere Relations II, UHEL, Finland</td><td>Tukka Petaja</td><td>tuukka.petaja@helsinki.fi</td></tr><tr><td>7-PAL</td><td>Pallas-Sodankylä Global Atmospheric Watch Station, FMI, Finland</td><td>Heikki Lihavainen</td><td>heikki.lihavainen@fmi.fi</td></tr><tr><td>8-JFJ</td><td>High Altitude Research Station Jungfraujoch, PSI, Switzerland</td><td>Urs Baltensperger</td><td>urs.baltensperger@psi.ch</td></tr><tr><td>9-KNMI</td><td>Cabauw Experimental Site for Atmospheric Research, KNMI, The Netherlands</td><td>Arnoud Apituley</td><td>apituley@knmi.nl</td></tr><tr><td>10-MEL</td><td>TROPOS Research Station Melpitz, TROPOS, Germany</td><td>Gerald Spindler</td><td>spindler@tropos.de</td></tr><tr><td>11-FKL</td><td>FINOKALIA Atmospheric Observatory, NOA, Greece</td><td>Nikolaos Mihalopoulos</td><td>nmihalo@noa.gr</td></tr><tr><td>12-KOS</td><td>Košetice-Křešín u Pacova, CHMI, Czech Republic</td><td>Vana Milan</td><td>yanam@chmi.cz</td></tr><tr><td>13-ISAF</td><td>Izana Subtropical Access Facility, UVA, Spain</td><td>Emilio Cuevas</td><td>cuevas@aemet.es</td></tr><tr><td>14-GRA</td><td>GRANADA Atmospheric Observatory, UGR, Spain</td><td>Lucas Alados</td><td>alados@ugr.es</td></tr><tr><td>15-MSY</td><td>CSIC Montseny, CSIC, Spain</td><td>Andres Alastuey</td><td>andres.alastuey@idaea.csic.es</td></tr><tr><td>16-HYM</td><td>Hyltemossa, ULUND, Sweden</td><td>Erik Swietlicki</td><td>Erik.swietlicki@nuclear.lu.se</td></tr><tr><td>17-CAO</td><td>Cyprus Atmospheric Observatory, CYI, Cyprus</td><td>Mihalis Vrekoussis</td><td>m.vrekoussis@cyi.ac.cy</td></tr><tr><td>18-MHD</td><td>Mace Head Research Station, NUIG, Ireland</td><td>Colin Odowd</td><td>colin.odowd@nuigalway.ie</td></tr></tbody></table>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
## 1. Principal Investigator

The Principal Investigator (PI) is the person responsible for the project who acts as contact of the proposal for the research team (user group). The Principal Investigator is expected to participate as a user.

### PI Research status

Please select:

* UND = Undergraduate

* PGR = Post-graduate, student with 1st university degree

* PDOC = Post-Doctoral Researcher

* TEC = Technician

* EXP = Experienced, professional researcher

## 2. Project information

### Integration in ACTRIS-2 activity

Please select:

* Profiling of aerosols (including combined Lidar and near-surface activities)

* Profiling of clouds and aerosol-cloud interactions

* Near-surface chemical, physical, optical aerosol properties and cloud droplets

* Near-surface trace gas concentrations

### TNA type

Specify if the planned project aims at providing training to young researchers or at adding value to the infrastructure (mobility of experts). The review will take into consideration a potential training benefit to young researchers or the expertise of the user group. Both training and mobility must be sufficiently demonstrated in the section "Technical description".

### Host infrastructure

Please select the host infrastructure from the following list of TNA providing observations facilities:

<table><thead><tr><td></td><td></td><td>Access provider</td><td>Email</td></tr></thead><tbody><tr><td>1-CIAO</td><td>CNR IMAA Atmospheric Observatory, CNR, Italy</td><td>Lucia Mona</td><td>Lucia.mona@imaa.cnr.it</td></tr><tr><td>2-CMN</td><td>Monte Cimone taking advantage of Po Valley facility, CNR, Italy</td><td>A. Marioni</td><td>a.marinoni@isac.cnr.it</td></tr><tr><td>3-SIR</td><td>SIRTA Atmospheric Research Observatory, CNRS, France</td><td>Martial Haeffelin</td><td>Martial.Haeffelin@lmd.polytechnique.fr</td></tr><tr><td>4-PUY</td><td>Puy de Dôme, CNRS, France</td><td>Karine Sellegri</td><td>sellegri@opgc.univ-bpclermont.fr</td></tr><tr><td>5-MAIDO - OPAR</td><td>Maido Observatory - Observatoire de Physique de l'Atmosphère à La Réunion, France</td><td>Jean-Pierre Camas</td><td>jean-pierre.cammas@univ-reunion.fr</td></tr><tr><td>6-SMR</td><td>Station for Measuring Ecosystem - Atmosphere Relations II, UHEL, Finland</td><td>Tukka Petaja</td><td>tuukka.petaja@helsinki.fi</td></tr><tr><td>7-PAL</td><td>Pallas-Sodankylä Global Atmospheric Watch Station, FMI, Finland</td><td>Heikki Lihavainen</td><td>heikki.lihavainen@fmi.fi</td></tr><tr><td>8-JFJ</td><td>High Altitude Research Station Jungfraujoch, PSI, Switzerland</td><td>Urs Baltensperger</td><td>urs.baltensperger@psi.ch</td></tr><tr><td>9-KNMI</td><td>Cabauw Experimental Site for Atmospheric Research, KNMI, The Netherlands</td><td>Arnoud Apituley</td><td>apituley@knmi.nl</td></tr><tr><td>10-MEL</td><td>TROPOS Research Station Melpitz, TROPOS, Germany</td><td>Gerald Spindler</td><td>spindler@tropos.de</td></tr><tr><td>11-FKL</td><td>FINOKALIA Atmospheric Observatory, NOA, Greece</td><td>Nikolaos Mihalopoulos</td><td>nmihalo@noa.gr</td></tr><tr><td>12-KOS</td><td>Košetice-Křešín u Pacova, CHMI, Czech Republic</td><td>Vana Milan</td><td>yanam@chmi.cz</td></tr><tr><td>13-ISAF</td><td>Izana Subtropical Access Facility, UVA, Spain</td><td>Emilio Cuevas</td><td>cuevas@aemet.es</td></tr><tr><td>14-GRA</td><td>GRANADA Atmospheric Observatory, UGR, Spain</td><td>Lucas Alados</td><td>alados@ugr.es</td></tr><tr><td>15-MSY</td><td>CSIC Montseny, CSIC, Spain</td><td>Andres Alastuey</td><td>andres.alastuey@idaea.csic.es</td></tr><tr><td>16-HYM</td><td>Hyltemossa, ULUND, Sweden</td><td>Erik Swietlicki</td><td>Erik.swietlicki@nuclear.lu.se</td></tr><tr><td>17-CAO</td><td>Cyprus Atmospheric Observatory, CYI, Cyprus</td><td>Mihalis Vrekoussis</td><td>m.vrekoussis@cyi.ac.cy</td></tr><tr><td>18-MHD</td><td>Mace Head Research Station, NUIG, Ireland</td><td>Colin Odowd</td><td>colin.odowd@nuigalway.ie</td></tr></tbody></table>

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
**3. Project dates**

Indicate the first and last day the infrastructure is accessed by any person of the user group.

**4. Project description**

Please limit the text to the recommended length. If required, you may add supplementary information either in the section "Comments" or in the email to the ACTRIS Coordination office. The Coordination Office will decide whether the information is relevant to be included for the review.

* **Scientific objectives:** Give a concise and clear outline of the objectives that you want to achieve and the specific aims of the project by making reference to its scientific relevance. Identify the gaps the project is intended to fill, state your motivation and importance of your planned research and your reasons for choosing the specific infrastructure.

* **Work plan:** Provide a succinct and accurate description of your plan for achieving the goals in the given time frame, the methods employed, the experimental set-up foreseen, any additional information about planned time table and your justification of training benefit and mobility. The work plan should include sufficient information needed for evaluation of the project.

* **Data management:** Data from measurements at ACTRIS observational facilities are archived in the ACTRIS Data Centre for long-term storage and access. The ACTRIS Data Centre also offers to archive data resulting from TNA activities. This is optional, and the data can be password-protected. The default embargo time is 1 year after the submission of quality assured data to the ACTRIS topic data base. This can be adjusted in accordance with the data submitter's needs, during the submission processes. The ACTRIS Data Policy is available from: http://actris nilu no/Content/Documents/DataPolicy.pdf. For data management it is helpful if you included a list of instruments you plan to bring to the site.

**5. Participants' Employing Organization / Home Institution**

**Institution legal status**

Please select:

* UNI: University and higher education

* RES: Public research (including international research organizations and private research organization controlled by a public authority)

* SME: Small Medium Enterprise

* PRV: Other industrial and/or profit private organization

* OTH: Other

**6. Participants' information:**

* All participants needed to carry out the project and accessing the infrastructure should be listed here.

* A TNA is not possible if the home country of the Principal Investigator's affiliated institution is located in the same country as the host infrastructure ('trans-nationality aspect').

* Position: select the appropriate research status (or equivalent): UND=Undergraduate, PGR=Post-Graduate (student with a first University), PDOC= Post-doctoral researcher (PhD completed within last 5 years), TEC= Technician (or engineer), EXP=Experienced (professional) researcher, senior scientist.

* New user: select 'Yes' if the user has never visited the infrastructure before this specific project. Priority is given to user groups involving new users (users that have never used the infrastructure before or users from institutions/countries that would normally not have access to such unique research facility, e.g., scientists from Central and Eastern European countries).

* Indicate first/last day of TNA (dd/mm/yyyy). If your access to the infrastructure is not continuous, indicate periods on separate lines.

* Indicate the TNA duration in days. The access may be non-continuous and may include days (or half-days) for installation, tests, dismantling (max 20%). Do only include actual days of access to the infrastructure and relevant to the project. Please round to minimum half day (e.g., 2 or 2.5 or 3, etc.). The number of access days will have to be justified for reimbursement.

The total duration of TNA will have to be included.

**Activity domain**

Please select:

* Physics

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
### 3. Project dates

Indicate the first and last day the infrastructure is accessed by any person of the user group.

### 4. Project description

Please limit the text to the recommended length. If required, you may add supplementary information either in the section "Comments" or in the email to the ACTRIS Coordination office. The Coordination Office will decide whether the information is relevant to be included for the review.

* **Scientific objectives:** Give a concise and clear outline of the objectives that you want to achieve and the specific aims of the project by making reference to its scientific relevance. Identify the gaps the project is intended to fill, state your motivation and importance of your planned research and your reasons for choosing the specific infrastructure.

* **Work plan:** Provide a succinct and accurate description of your plan for achieving the goals in the given time frame, the methods employed, the experimental set-up foreseen, any additional information about planned time table and your justification of training benefit and mobility. The work plan should include sufficient information needed for evaluation of the project.

* **Data management:** Data from measurements at ACTRIS observational facilities are archived in the ACTRIS Data Centre for long-term storage and access. The ACTRIS Data Centre also offers to archive data resulting from TNA activities. This is optional, and the data can be password-protected. The default embargo time is 1 year after the submission of quality assured data to the ACTRIS topic data base. This can be adjusted in accordance with the data submitter's needs, during the submission processes. The ACTRIS Data Policy is available from: http://actrisnilu.no/Content/Documents/DataPolicy.pdf. For data management it is helpful if you included a list of instruments you plan to bring to the site.

### 5. Participants' Employing Organization / Home Institution

**Institution legal status**

Please select:

* UNI: University and higher education

* RES: Public research (including international research organizations and private research organization controlled by a public authority)

* SME: Small Medium Enterprise

* PRV: Other industrial and/or profit private organization

* OTH: Other

### 6. Participants' information:

* All participants needed to carry out the project and accessing the infrastructure should be listed here.

* A TNA is not possible if the home country of the Principal Investigator's affiliated institution is located in the same country as the host infrastructure ('trans-nationality aspect').

* Position: select the appropriate research status (or equivalent): UND=Undergraduate, PGR=Post-Graduate (student with a first University), PDOC= Post-doctoral researcher (PhD completed within last 5 years), TEC= Technician (or engineer), EXP=Experienced (professional) researcher, senior scientist.

* New user: select 'Yes' if the user has never visited the infrastructure before this specific project. Priority is given to user groups involving new users (users that have never used the infrastructure before or users from institutions/countries that would normally not have access to such unique research facility, e.g., scientists from Central and Eastern European countries).

* Indicate first/last day of TNA (dd/mm/yyyy). If your access to the infrastructure is not continuous, indicate periods on separate lines.

* Indicate the TNA duration in days. The access may be non-continuous and may include days (or half-days) for installation, tests, dismantling (max 20%). Do only include actual days of access to the infrastructure and relevant to the project. Please round to minimum half day (e.g., 2 or 2.5 or 3, etc.). The number of access days will have to be justified for reimbursement.

The total duration of TNA will have to be included.

**Activity domain**

Please select:

* Physics

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
* Chemistry

* Life sciences & Biotech

* Earth sciences & Environment

* Engineering & Technology

* Mathematics

* Information & Communication Technologies

* Material sciences

* Energy

* Social sciences

* Humanities

### Position

Please select:

* UND = Undergraduate

* PGR = Post-graduate, student with 1st university degree

* PDOC = Post-Doctoral Researcher

* TEC = Technician

* EXP = Experienced, professional researcher

### Estimated project costs

List your real estimated costs for all participants included in the table above. Financial support from ACTRIS-2 to the project user group is intended to facilitate TNA but cannot guarantee full reimbursement of travel expenses of the participating users. It is only available upon request. Please note that:

* Independent from the number of participants, financial support will be decided on a case-by-case basis but will mostly be limited to 2 equivalent persons per project (e.g., in a project lasting two weeks: 2 persons x 14 days or 4 persons x 7 days etc.).

* Financial support to travel and subsistence to the user group depends on the host infrastructure, calculations may vary and are based on the availability of funding from the European Commission and on the applicable rates of the accounting practices of the institution in charge of the host infrastructure. The final grant is a maximum amount and will be decided after the evaluation results in agreement with the access provider.

* Instrument transport will not be reimbursed except for TNA to MAIDO-OPAR where some instrument transport is eligible, please include the additional expected costs in the comment section.

Reimbursement of the grant will usually be done after project completion and after submission of all requested documentation to the Coordination Office. Reimbursement is made via the host institution and will require proper justification (original tickets, receipts, etc.) according to the regulation applied to by the host institution. Please contact the access provider for details.

### Comments

Comments are optional. You many include any additional information you consider pertinent for the TNA project or evaluation.

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
* Chemistry

* Life sciences & Biotech

* Earth sciences & Environment

* Engineering & Technology

* Mathematics

* Information & Communication Technologies

* Material sciences

* Energy

* Social sciences

* Humanities

### Position

Please select:

* UND = Undergraduate

* PGR = Post-graduate, student with 1st university degree

* PDOC = Post-Doctoral Researcher

* TEC = Technician

* EXP = Experienced, professional researcher

### Estimated project costs

List your real estimated costs for all participants included in the table above. Financial support from ACTRIS-2 to the project user group is intended to facilitate TNA but cannot guarantee full reimbursement of travel expenses of the participating users. It is only available upon request. Please note that:

* Independent from the number of participants, financial support will be decided on a case-by-case basis but will mostly be limited to 2 equivalent persons per project (e.g., in a project lasting two weeks: 2 persons x 14 days or 4 persons x 7 days etc.).

* Financial support to travel and subsistence to the user group depends on the host infrastructure, calculations may vary and are based on the availability of funding from the European Commission and on the applicable rates of the accounting practices of the institution in charge of the host infrastructure. The final grant is a maximum amount and will be decided after the evaluation results in agreement with the access provider.

* Instrument transport will not be reimbursed except for TNA to MAIDO-OPAR where some instrument transport is eligible, please include the additional expected costs in the comment section.

Reimbursement of the grant will usually be done after project completion and after submission of all requested documentation to the Coordination Office. Reimbursement is made via the host institution and will require proper justification (original tickets, receipts, etc.) according to the regulation applied to by the host institution. Please contact the access provider for details.

### Comments

Comments are optional. You many include any additional information you consider pertinent for the TNA project or evaluation.

ACTRIS (www.actris.eu) is supported by the European Commission under the Horizon 2020 - Research and Innovation Framework Programme, H2020-INFRAIA-2014-2015, Grant Agreement number: 654109
# Appendix B: Document templates used within the process of TNA to observation facilities – Review form

<figure><img src="image_20.png" /></figure>

## TNA Proposal evaluation form for reviewers

<table><tr><td>Reviewer name:</td><td></td></tr><tr><td>Project leader name:</td><td></td></tr><tr><td>Project acronym:</td><td></td></tr></table>

<table><tr><td>Comments from access provider:</td><td></td></tr></table>

<table><thead><tr><th></th><th>Evaluation - Points</th></tr></thead><tbody><tr><td><strong>Scientific Value</strong></td><td></td></tr><tr><td>Originality and scientific quality:</td><td>Select... ▶</td></tr><tr><td>Interest to scientific community:</td><td>Select... ▶</td></tr><tr><td>Other (e.g., innovative, technical approach, effective use of infrastructure, etc.):</td><td>Select... ▶</td></tr><tr><td><strong>Total 1 (Max. 12/20):</strong></td><td>0</td></tr><tr><td><strong>Users</strong></td><td></td></tr><tr><td>Training benefits for the users:</td><td>Select... ▶</td></tr><tr><td>Expertise of the users (mobility of expert):</td><td>Select... ▶</td></tr><tr><td>Proportion of new users:</td><td>Select... ▶</td></tr><tr><td>Female participation:</td><td>Select... ▶</td></tr><tr><td><strong>Total 2 (Max. 8/20):</strong></td><td>0</td></tr><tr><td><strong>Total 1 + Total 2 (Max. 20/20):</strong></td><td>0</td></tr></tbody></table>

<table><tr><td>Comments (optional, but appreciated!):</td><td></td></tr></table>

<table><tr><td>Proposal accepted:</td><td>Select...</td><td>▼</td></tr></table>
# Appendix B: Document templates used within the process of TNA to observation facilities – Review form

<figure><img src="image_20.png" /></figure>

## TNA Proposal evaluation form for reviewers

<table><tr><td>Reviewer name:</td><td></td></tr><tr><td>Project leader name:</td><td></td></tr><tr><td>Project acronym:</td><td></td></tr></table>

<table><tr><td>Comments from access provider:</td><td></td></tr></table>

<table><thead><tr><th></th><th>Evaluation - Points</th></tr></thead><tbody><tr><td><strong>Scientific Value</strong></td><td></td></tr><tr><td>Originality and scientific quality:</td><td>Select... ▶</td></tr><tr><td>Interest to scientific community:</td><td>Select... ▶</td></tr><tr><td>Other (e.g., innovative, technical approach, effective use of infrastructure, etc.):</td><td>Select... ▶</td></tr><tr><td><strong>Total 1 (Max. 12/20):</strong></td><td>0</td></tr><tr><td><strong>Users</strong></td><td></td></tr><tr><td>Training benefits for the users:</td><td>Select... ▶</td></tr><tr><td>Expertise of the users (mobility of expert):</td><td>Select... ▶</td></tr><tr><td>Proportion of new users:</td><td>Select... ▶</td></tr><tr><td>Female participation:</td><td>Select... ▶</td></tr><tr><td><strong>Total 2 (Max. 8/20):</strong></td><td>0</td></tr><tr><td><strong>Total 1 + Total 2 (Max. 20/20):</strong></td><td>0</td></tr></tbody></table>

<table><tr><td>Comments (optional, but appreciated!):</td><td></td></tr></table>

<table><tr><td>Proposal accepted:</td><td>Select...</td><td>▼</td></tr></table>
# Proposal evaluation guidelines

## Scientific value

The assessment of the TNA proposal should be based on its scientific merit and impact on the scientific community as well as on its innovative and technical approach, and not on the financial criteria.

## Users

A user refers to any researcher, student, engineer, or technician who needs the support of an advanced research station to carry out a scientific project in the ACTRIS-2 context. Priority should be given to projects providing a potential **training benefit** to the users, or adding value to the infrastructure from **experts**. Also, priority should be given to groups composed of:

* Participants who have not previously used the installation (**new users**);

* Participants who are working in **countries where no equivalent infrastructure exists**.

Furthermore, special attention will be paid to **female participation** in order to promote equal opportunities in the implementation of the TNA activities.

## Non-EU Countries:

Transnational access to user groups in which all or most users work in third countries (non-EU member or associated countries) is eligible but may be limited. This limit accounts for 20% of the requested access by third country users with respect to the total quantity of access offered under the grant and is monitored by the coordination office.

## Comments

Constructive comments or suggestions to the applicants from the reviewers are not mandatory but can be very important in improving the scientific quality of the work.

## Proposal acceptance

A proposal should have at least 10 total points to pass. You may still accept a proposal with less than 10 points if you consider the work worth being supported. In this case please provide a short comment to justify.
# Proposal evaluation guidelines

## Scientific value

The assessment of the TNA proposal should be based on its scientific merit and impact on the scientific community as well as on its innovative and technical approach, and not on the financial criteria.

## Users

A user refers to any researcher, student, engineer, or technician who needs the support of an advanced research station to carry out a scientific project in the ACTRIS-2 context. Priority should be given to projects providing a potential **training benefit** to the users, or adding value to the infrastructure from **experts**. Also, priority should be given to groups composed of:

* Participants who have not previously used the installation (**new users**);

* Participants who are working in **countries where no equivalent infrastructure exists**.

Furthermore, special attention will be paid to **female participation** in order to promote equal opportunities in the implementation of the TNA activities.

## Non-EU Countries:

Transnational access to user groups in which all or most users work in third countries (non-EU member or associated countries) is eligible but may be limited. This limit accounts for 20% of the requested access by third country users with respect to the total quantity of access offered under the grant and is monitored by the coordination office.

## Comments

Constructive comments or suggestions to the applicants from the reviewers are not mandatory but can be very important in improving the scientific quality of the work.

## Proposal acceptance

A proposal should have at least 10 total points to pass. You may still accept a proposal with less than 10 points if you consider the work worth being supported. In this case please provide a short comment to justify.
# Appendix C: Document templates used within the process of TNA to observation facilities – Confirmation of Access

<figure><img src="image_21.png" /></figure>

The completed and signed form below should be returned by email to actris-co@oagc.univ-bodmermont.fr.

[Host institution and address]

[Name of project leader]

[Home institution and address]

## CONFIRMATION OF ACCESS

### ACTRIS-2 Trans-National Access

I, [Access provider in charge of the Infrastructure], herewith confirm that the following project was carried out at our infrastructure [name of infrastructure] in the context of ACTRIS-2 Trans-National Access:

["Project acronym"].

The amount of access<fnref n="1" /> delivered to the project group (project users) is as follows:

<table><thead><tr><th></th><th>Participant name</th><th>Duration of stay<br>(start – end date)</th><th>Amount of<br>access<fnref n="1" /></th></tr></thead><tbody><tr><td>Project leader:</td><td></td><td>[dd/mm/yyyy – dd/mm/yyyy]</td><td></td></tr><tr><td>Project user 1:</td><td></td><td></td><td></td></tr><tr><td>Project user 2:</td><td></td><td></td><td></td></tr><tr><td>Project user ...<fnref n="2" /></td><td></td><td></td><td></td></tr><tr><td colspan="3">Total amount of access delivered to project group:</td><td></td></tr></tbody></table>

<figure><img src="image_22.png" /></figure>

[Location], [Date (dd/mm/yyyy)]

Location and date

Signature of project leader<fnref n="3" />

[Location], [Date (dd/mm/yyyy)]

Location and date

Signature of access provider<fnref n="3" />

<figure><img src="image_23.png" /></figure>

<footnote n="1">¹ The amount of access is defined as the time, in days, spent by the user at the infrastructure for this project, including weekends and public holidays (e.g., a scientist who spent 4.5 days at the infrastructure must indicate '4.5'). The total amount of access of the group is the sum of access days of each user. Please round to half days where appropriate.</footnote>

<footnote n="2">² Add new rows if necessary.</footnote>

<footnote n="3">³ The document must be 1) Signed by the project leader; 2) Signed by the access provider; 3) Sent to the Coordination office by the access provider (please respect order).</footnote>
# Appendix C: Document templates used within the process of TNA to observation facilities – Confirmation of Access

<figure><img src="image_21.png" /></figure>

The completed and signed form below should be returned by email to actris-co@oagc.univ-boclermont.fr.

[Host institution and address]

[Name of project leader]

[Home institution and address]

## CONFIRMATION OF ACCESS

### ACTRIS-2 Trans-National Access

I, [Access provider in charge of the Infrastructure], herewith confirm that the following project was carried out at our infrastructure [name of infrastructure] in the context of ACTRIS-2 Trans-National Access:

["Project acronym"].

The amount of access<fnref n="1" /> delivered to the project group (project users) is as follows:

<table><thead><tr><th></th><th>Participant name</th><th>Duration of stay<br>(start – end date)</th><th>Amount of<br>access<fnref n="1" /></th></tr></thead><tbody><tr><td>Project leader:</td><td></td><td>[dd/mm/yyyy – dd/mm/yyyy]</td><td></td></tr><tr><td>Project user 1:</td><td></td><td></td><td></td></tr><tr><td>Project user 2:</td><td></td><td></td><td></td></tr><tr><td>Project user ...<fnref n="2" /></td><td></td><td></td><td></td></tr><tr><td colspan="3">Total amount of access delivered to project group:</td><td></td></tr></tbody></table>

<figure><img src="image_22.png" /></figure>

[Location], [Date (dd/mm/yyyy)]

Location and date

Signature of project leader<fnref n="3" />

[Location], [Date (dd/mm/yyyy)]

Location and date

Signature of access provider<fnref n="3" />

<figure><img src="image_23.png" /></figure>

<footnote n="1">¹ The amount of access is defined as the time, in days, spent by the user at the infrastructure for this project, including weekends and public holidays (e.g., a scientist who spent 4.5 days at the infrastructure must indicate '4.5'). The total amount of access of the group is the sum of access days of each user. Please round to half days where appropriate.</footnote>

<footnote n="2">² Add new rows if necessary.</footnote>

<footnote n="3">³ The document must be 1) Signed by the project leader; 2) Signed by the access provider; 3) Sent to the Coordination office by the access provider (please respect order).</footnote>
# Appendix D: Document templates used within the process of TNA to observation facilities – Scientific activity report

<figure><img src="image_24.png" /></figure>

## ACTRIS-2 TNA Activity Report

[TNA project title, Acronym]

[Name of Project Leader and co-authors]

### Instructions

Please limit the report to max 3-5 pages, including tables and figures.

The report should be sent as a pdf document and include the subheadings listed below. Please make sure to address any comments made by the reviewers (if applicable, you were informed in this case beforehand).

The report will be made available on the actris.eu website. Should any information be confidential or not be made public, please inform us accordingly (in this case it will only be accessible by the EC, ACTRIS-2 project partners, and the reviewers).

* Introduction and motivation

* Scientific objectives

* Reason for choosing station/ infrastructure

* Method and experimental set-up

* Preliminary results and conclusions

* Outcome and future studies

* References
# Appendix D: Document templates used within the process of TNA to observation facilities – Scientific activity report

<figure><img src="image_24.png" /></figure>

## ACTRIS-2 TNA Activity Report

[TNA project title, Acronym]

[Name of Project Leader and co-authors]

### Instructions

Please limit the report to max 3-5 pages, including tables and figures.

The report should be sent as a pdf document and include the subheadings listed below. Please make sure to address any comments made by the reviewers (if applicable, you were informed in this case beforehand).

The report will be made available on the actris.eu website. Should any information be confidential or not be made public, please inform us accordingly (in this case it will only be accessible by the EC, ACTRIS-2 project partners, and the reviewers).

* Introduction and motivation

* Scientific objectives

* Reason for choosing station/ infrastructure

* Method and experimental set-up

* Preliminary results and conclusions

* Outcome and future studies

* References