cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.965120
title: Radar reflectivities at 94 GHz and microwave brightness temperature measurements at 89 GHz during the AFLUX Arctic airborne campaign in spring 2019 out of Svalbard

description: The published data set consists of measurements performed by the active cloud radar as part of the Microwave Radar and radiometer for Arctic Clouds (MiRAC; Mech et al., 2019) operated on board the Polar 5 research aircraft during 14 flights of the Airborne measurements of radiative and turbulent FLUXes of energy and momentum in the Arctic boundary layer (AFLUX) campaign, carried out in spring 2019 northwest of Svalbard (Norway). The measurement campaign is embedded in the Transregional Collaborative Research Centre TR 172 (ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms (AC)3. The published data set consists of radar reflectivities of the FMCW 94 GHz cloud radar transformed to nadir view as well as brightness temperature measurements at 89 GHz with a 25 deg backward inclination with respect to the aircraft's fuselage. It should be considered that the brightness temperatures have not been corrected for aircraft attitude. The data set has been quality-checked and is available in NetCDF format for each flight separately.Details on the instrument can be found in Mech et al. (2019) and on the dataset and its usage in Mech et al. (2022)
DOI: 10.1594/pangaea.957759
title: Cloud radiative forcing, LWP and cloud-free albedo derived from airborne broadband irradiance observations during the MOSAiC-ACA campaign

description: Longwave and shortwave cloud radiative forcing (CRF) derived from broadband irradiance observations (doi:10.1594/PANGAEA.936232) during the MOSAiC-ACA (Multidisciplinary drifting Observatory for the Study of Arctic Climate - Airborne observations in the Central Arctic) campaign in September 2020. This dataset contains only low-level flight sections. In addition, a cloud liquid water path (LWP) equivalent derived from the shortwave transmissivity is given and a cloud-free albedo estimate during cloudy observations. CRF, LWP equivalent, and the cloud-free albedo were derived using the method described by Stapf et al. (2020).
DOI: 10.1594/pangaea.984585
title: Measurements of polyethylene terephthalate surface changes after UV exposure and biofilm growth

description: This data set contains data for the characterization and analysis of the surface of a polyethylene terephthalte (PET) drinking bottle and the effects of biofilm and UV exposure on the surface properties. This publication contains data from µ-Raman spectroscopy, atomic force microscopy (AFM), water and diiodomethane contact angles, and surface free energy. Measurements were conducted on pristine PET, biofilm affected PET, UV exposed PET, and biofilm affected + UV exposed PET to determine which parameter induces the strongest changes in surface chemistry.
DOI: 10.1594/pangaea.960906
title: Properties of liquid-dominated clouds over the ice-free and sea-ice-covered Arctic Ocean during AFLUX

description: This dataset contains retrieved microphysical properties of liquid-dominated clouds from the Arctic Amplification: FLUXes in the Cloudy Atmospheric Boundary Layer (AFLUX, March/April 2019) airborne campaign. The retrieved parameters of the dataset are effective radius, optical thickness and effective liquid water path. AFLUX took place in the vicinity of Svalbard over the ice-free and sea-ice-covered Arctic Ocean. A statistically analysis of this dataset and an explanation of the retrieval method is published in Klingebiel et al. (2023, https://doi.org/10.5194/acp-2022-848).
DOI: 10.1594/pangaea.980080
title: Diatom assemblages and biogenic silica from IODP Site 383-U1539

description: From the complete downcore record of IODP Site 383-U1539, sampling was conducted at 1 m resolution. Quantitative diatom slides were prepared following the settling method of Warnock and Scherer (2015, doi:10.1016/j.csr.2015.04.012) using 15-25 μg of dry bulk sediment treated with 2 ml of 10 % hydrogen peroxide and two drops of saturated sodium hexametaphosphate. Sample solution was added to 2 L Elix water in B-KER2 chambers with prepared coverslips secured on a table above the height of the drainage valve. After settling and draining, coverslips were adhered to glass slides using Norland Optical Adhesive #61 (refractive index = 1.56). Slides were observed with a Leitz Dialux 20 light microscope, using a 100X oil immersion objective and 10X eyepieces for 1000X total magnification. A minimum of 400 valves were counted for each slide. Absolute diatom abundance and relative abundances of species are reported here. Biogenic silica analysis was conducted at the University of Otago following a modified version of Mortlock and Froelich (1989, doi:10.1016/0198-0149(89)90092-7) for the same set of samples used for diatom analysis. For each analysis, approximately 7 mg of dry sediment was homogenized and dissolved in 0.1 M NaOH solution in an 85°C water bath. Sub-samples were collected after 3, 4, and 5 hours. Dissolved silicon content was measured using a Shimadzu UV-1800 spectrophotometer.
DOI: 10.1594/pangaea.985189
title: Pond/ditch benthic invertebrate data on d15N/d13C (northeast-Germany, 2020)

description: Benthic invertebrate samples were taken directly in the field via hand-netting in four ditches and three ponds (defined as water bodies with a maximum extent of one hectare) in October and November 2020. Sampling was carried out in Brandenburg in Germany in the region Havellaendisches Luch. The landscape is characterized by an intensively maintained ditch system that was created for industrial agricultural production during 1980s. Additionally, the landscape is characterized by a large number of small standing water bodies (kettle holes, ponds), which were formed during the last glacial period. A detailed description of the area can be found in Trau & Lorenz, 2024. Invertebrate samples were analysed for the stable isotopes of carbon and nitrogen. The data set includes data from 35 families. The whole animal was used for the analysis of stable isotopes of carbon and nitrogen. Analyses were performed on a Thermo Delta V isotope ratio mass spectrometer (IRMS) interfaced to a NC2500 elemental analyser by the Cornell University Stable Isotope Laboratory (https://cobsil.cornell.edu/). The dataset was used to evaluate isotopic niches of functional feeding groups (collector/gatherer, collector/filterer, grazer/scraper, shredder, predator and omnivore) in the two water body types (pond and ditch), in order to evaluate effects of agriculture (nutrient concentrations and pesticide residues) on the isotopic niches (Trau et al. 2025, under review).
DOI: 10.1594/pangaea.986602
title: Pedodiversity and biodiversity in Andossi Plateau

description: As part of the Pascol-Ando and PascoliAmo project, in the framework of the PSR (Rural Development Program) of the Lombardy Region, which aimed to promote sustainable pasture management (Mascetti et al., 2023; doi:10.1080/14888386.2023.2192687), a pedological and floristic survey was carried out at 156 and 264 georeferenced points, respectively. The locations of the soil sampling points were selected to best represent the variability in vegetation and geomorphological characteristics. Soil minipits were opened down to the C horizon or rock, and corings were carried out using a 4 cm diameter, 50 cm long gauge auger designed to differentiate and sample the soil by horizon (minipit:coring ratio 1:4). Soils were described and sampled by horizon, then analyzed for the purpose of classification. The soils were classified according to the WRB taxonomic system (IUSS Working Group WRB, 2022). The vegetation survey was carried out over two years, from July to the end of August, at 138 points in 2020 and 126 points in 2021, in correspondence with the soil sampling. Within each 1 × 1 m plot, all species were identified, and their visual percent cover was estimated using a grid with 10 × 10 cm cell units. Each plot was selected to be representative of a larger area in terms of vegetation cover and species composition. The nomenclature follows the updated checklists of the vascular flora of Italy (Bartolucci et al., 2024; doi:10.1080/11263504.2024.2324134) which are continuously updated on The Portal to the Flora of Italy (https://dryades.units.it/floritaly/, Martellos et al., 2020; doi:10.3897/phytokeys.156.54023). Six vegetation types (PP: poor pasture; RP: rich pasture; CP: calcareous pasture; EH; earth hummock; PB: peat bog; S: shrub) were considered, based on a previous study on the characterization of pasture plant communities (Mascetti et al., 2023). Geological information is available for each point, obtained by simplifying the geological units of the available map of the study area into six classes (ECD: eluvial-colluvial deposit; PD: peat bog deposit; GlD: glacial deposit; GD: gravitative deposit; CR: carbonatic rock; SR: schistose rock; CS: carbonatic rock and GrD: gravitative deposit).
DOI: 10.1594/pangaea.932456
title: Cloud top altitude retrieved from Lidar measurements during MOSAiC-ACA at 1 second resolution

description: During the MOSAiC-ACA aircraft campaign (31.8.2020 - 13.9.2020) the AMALi Lidar was installed nadir pointing. This dataset contains the cloud top altitudes below the aircraft (altitudes with strong signal increase), as well as a cloud mask, derived from the optical depth of the column. The majority of the data was collected northwest of the Svalbard archipelago. More details on the campaign can be found here (https://home.uni-leipzig.de/~ehrlich/MOSAiC_ACA_wiki_doku). Please check the data documentation before using this dataset.
description: Contact person: Mario Mech (mario.mech@uni-koeln.de)
DOI: 10.1594/pangaea.981432
title: Whole-rock chemical analyses from the Heldburg dyke swarm

description: In the project "Geochemistry and geochronology of the Heldburg dyke swarm, Central European Volcanic Province" we conducted geochemical and geochronological investigations on mafic dykes and former magma chambers of the Heldburg dyke swarm. The latter is part of the Central European Volcanic Province and positioned in the South of Thuringia and the North of Bavaria (Germany). It consists of several hundred mafic NNE-SSW striking dykes with an usual thickness of &lt; 1m and few former magma chambers. All of these have an atypical position within the Central European Volcanic Province located away from Hercynian massifs and major rift axes and were hitherto poorly investigated. In general, 10 different locations of the Heldburg dyke swarm were sampled for whole-rock analyses and 4 different locations were chosen for determining their apatite and zircon ages. The fieldwork was conducted between March 2022 and December 2023. The analytical work was done between June 2022 and April 2024 at the Department of Geodynamics and Geomaterials Research, University of Würzburg (samples preparation, X-ray fluorescence), at the GeoZentrum Nordbayern, University of Erlangen (trace element contents, LA-ICP-MS) and at FIERCE (Frankfurt Isotope & Element Research Center), Goethe University Frankfurt (apatite and zircon ages, LA-ICP-MS). Here, we present the full dataset of 55 whole-rock chemical analyses (X-ray fluorescence, LA-ICP-MS) from ten locations of the Heldburg dyke swarm.
DOI: 10.1594/pangaea.981433
title: U-Pb of apatite from Maroldsweisach, Bramberg, Zimmerau Süd and Fuchslöcher

description: In the project "Geochemistry and geochronology of the Heldburg dyke swarm, Central European Volcanic Province" we conducted geochemical and geochronological investigations on mafic dykes and former magma chambers of the Heldburg dyke swarm. The latter is part of the Central European Volcanic Province and positioned in the South of Thuringia and the North of Bavaria (Germany). It consists of several hundred mafic NNE-SSW striking dykes with an usual thickness of &lt;1 m and few former magma chambers. All of these have an atypical position within the Central European Volcanic Province located away from Hercynian massifs and major rift axes and were hitherto poorly investigated. In general, 10 different locations of the Heldburg dyke swarm were sampled for whole-rock analyses and 4 different locations were chosen for determining their apatite and zircon ages. The fieldwork was conducted between March 2022 and December 2023. The analytical work was done between June 2022 and April 2024 at the Department of Geodynamics and Geomaterials Research, University of Würzburg (samples preparation, X-ray fluorescence), at the GeoZentrum Nordbayern, University of Erlangen (trace element contents, LA-ICP-MS) and at FIERCE (Frankfurt Isotope & Element Research Center), Goethe University Frankfurt (apatite and zircon ages, LA-ICP-MS).Here, we present the full set of U-Pb data of apatite from the study sites of Maroldsweisach, Bramberg, Zimmerau Süd and Fuchslöcher.
DOI: 10.1594/pangaea.981434
title: U-Pb age of zircon from Zimmerau Süd

description: In the project "Geochemistry and geochronology of the Heldburg dyke swarm, Central European Volcanic Province" we conducted geochemical and geochronological investigations on mafic dykes and former magma chambers of the Heldburg dyke swarm. The latter is part of the Central European Volcanic Province and positioned in the South of Thuringia and the North of Bavaria (Germany). It consists of several hundred mafic NNE-SSW striking dykes with an usual thickness of &lt; 1m and few former magma chambers. All of these have an atypical position within the Central European Volcanic Province located away from Hercynian massifs and major rift axes and were hitherto poorly investigated. In general, 10 different locations of the Heldburg dyke swarm were sampled for whole-rock analyses and 4 different locations were chosen for determining their apatite and zircon ages. The fieldwork was conducted between March 2022 and December 2023. The analytical work was done between June 2022 and April 2024 at the Department of Geodynamics and Geomaterials Research, University of Würzburg (samples preparation, X-ray fluorescence), at the GeoZentrum Nordbayern, University of Erlangen (trace element contents, LA-ICP-MS) and at FIERCE (Frankfurt Isotope & Element Research Center), Goethe University Frankfurt (apatite and zircon ages, LA-ICP-MS). Here, we present the full set of U-Pb age data of zircon from the study site Zimmerau Süd.
DOI: 10.1594/pangaea.965064
title: Thermochronology data (AHe) from the easternmost Eastern Alps

description: We carried out apatite fission track and apatite (U-Th)/He dating on Flysch, Lunz and Gosau sandstones from the easternmost Eastern Alps. Late Oligocene to Miocene cooling ages capture a hitherto un(der)appreciated pulse of exhumation. This pulse is related to the Bohemian Spur of the downgoing European plate.
description: This dataset has been carefully reviewed and curated in accordance with PANGAEA's exceptionally high quality standards. However, due to discontinued communication from the authors' side, it did not receive the usual formal approval by the authors and therefore lacks final scientific validation.
DOI: 10.1594/pangaea.932010
title: Cloud radiative forcing, LWP and cloud-free albedo derived from airborne broadband irradiance observations during the AFLUX and ACLOUD campaign

description: Longwave and shortwave cloud radiative forcing derived from broadband irradiance observations during the AFLUX (Airborne measurements of radiative and turbulent FLUXes of energy and momentum in the Arctic boundary layer, March / April 2019) and the ACLOUD (Arctic CLoud Observations Using airborne measurements during polar Day, May / June 2017) campaign. This dataset contains only low-level flight sections. In addition, a cloud liquid water path equivalent derived from the shortwave transmissivity is given and a cloud-free albedo estimate during cloudy observations. The cloud radiative forcing over sea ice during ACLOUD (https://doi.pangaea.de/10.1594/PANGAEA.909289) is extented to the entire marginal sea ice zone in this dataset.
DOI: 10.1594/pangaea.936232
title: Aircraft measurements of broadband irradiance during the MOSAiC-ACA campaign in 2020

description: Solar and terrestrial broadband irradiance and nadir brightness temperature observed during the MOSAiC-ACA (Multidisciplinary drifting Observatory for the Study of Arctic Climate - Airborne observations in the Central Arctic) campaign in August/September 2020.
DOI: 10.15468/dl.re3w3j
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Plerandra pickeringii",
 "HasCoordinate is true",
 "BasisOfRecord is one of (Specimen)"
 ]
}

 The dataset includes 10 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0008718-260120142942310/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.986507
title: Carbonate chemistry speciation of the 2023 KOSMOS Helgoland experiment on the effects of ocean alkalinity enhancement on pelagic foodwebs

description: This dataset contains carbonate chemistry speciation data of the 2023 KOSMOS mesocosm study on Helgoland, Germany. This study tested the effects of ocean alkalinity enhancement simulating lime additions on pelagic ecosystem functioning during a spring bloom. Carbonate chemistry speciation (fCO2, pHT, calcium carbonate saturation state) was generally calculated from measurements of total alkalinity (TA) and dissolved inorganic carbon (DIC) in depth-integrated water samples. There were 12 mesocosms in total and in 6 of them an alkalinity gradient of up to +1250 umol/kg was established in steps of 250 umol/kg. In the remaining 6 the same amount of alkalinity was added only to the upper portion of the mesocosms, resulting in twice the alkalinity increase there, before being mixed in after 48 hours. The two treatments simulated the immediate dilution of TA after ship deployment as well as a delayed one from a point source.
description: DIC and TA derived pHT regressed against depth-integrated CTD pH allowed to identify outliersIf outliers detected in TA or DIC, corrected CTD pH (regression R2 of 0.99) was used to calculate carbonate chemistry as second parameterData provide depth-integrated values (with the exception for the delayed treatments on day 5 and 6 where the data was from bottom layer samples). The T5 show data for the delayed treatments from day 3 to 7 where on day 3 and 7 the data shown is from depth-integrated samples while on day 5 and 6 it is from top layer samples. On day 5 and 6, the top layer samples have also been taken by a Niskin (0.3-0.8m).
DOI: 10.1594/pangaea.974302
title: Continuous CO2, CH4 and H2O fluxes measured during a 3-month mesocosm incubation from a Palsa

description: We aimed to study the effect of hydrological conditions on carbon mineralization during the degradation process of a Palsa. We simulated the processes of a Palsa degradation by incubating 1m soil cores from a Palsa and the surrounding Peatland under several water treatments. Each water treatment had three replicates, for a total of 15 cores. We continuously measured CO2 and CH4 emissions for 90 days by using a Picarro analyzer. Initially, we thawed the first 60 cm of the core and then deepened the thawing depth by 20 cm every four weeks to assess the contribution of deeper soil layers to C emissions . The results show higher CO2 emission rates following the thawing events for all the treatments under flooded conditions.
DOI: 10.1594/pangaea.974304
title: Initial thermokarst water and soil parameters from a palsa and a peatland site, used for a mesocosm incubation

description: In this dataset, we present the initial soil parameters of two cores from a palsa and a peatland in Lapland, as well as hydro-chemical parameters of thermokarst water used for inoculating par of the mesocosms. We measured sedimentary and hydro-chemical parameters, along with the humification index obtained through FTIR analysis. The replicate cores were incubated under different water treatments to identify the effect of hydrological conditions on carbon mineralization.
DOI: 10.1594/pangaea.951226
title: Multibeam bathymetry raw data (Atlas Hydrosweep DS 3 echo sounder entire dataset) of RV POLARSTERN during cruise PS130/2

description: Multibeam data were collected with RV Polarstern along the route of cruise PS130/2 and data acquisition was continuously monitored during the survey. Multibeam sonar system was Teledyne/Atlas Hydrosweep DS3. SVPs were retrieved from CTD data. SVPs were processed with HydrOffice SoundSpeedManager (https://www.hydroffice.org/soundspeed/main) and extended with World Ocean Atlas 13 (https://doi.org/10.7289/v5f769gt). SVP data were applied during acquisition. Multibeam data are unprocessed and may contain outliers and blunders and should not be used for grid calculations and charting projects without further editing. The raw multibeam sonar data in Teledyne/Atlas multibeam processing format (.asd) were recorded with Teledyne/Atlas Parastore software as well as Teledyne Reson format (.s7k) in Teledyne PDS. Raw data files can be processed using software packages like CARIS HIPS/SIPS. For updated vessel configuration files check further details.
description: These data should not be used for navigational purposes.
DOI: 10.1594/pangaea.945844
title: High resolution aircraft measurements of wind and temperature during the AFLUX campaign in 2019

description: During the AFLUX (Airborne measurements of radiative and turbulent FLUXes of energy and momentum in the Arctic boundary layer) campaign conducted in March/April 2019 meteorological data (temperature, 3 wind components, air pressure) have been measured in high temporal resolution (100 Hz) using instrumentation that was installed at the nosebooms of both aircraft Polar 5 and Polar 6. For each flight the data are given as functions of time and position (including height above ground) along the flight tracks. All flights started and ended in Longyearbyen, Svalbard. Each file represents an entire flight starting well before the first movement of the plane and ending after the final parking position has been reached after landing. The wind measurement is only valid during flight and the full accuracy is only achieved during straight level flight sections. The absolute accuracy of the wind components is 0.2m/s for straight and level flights sections and the relative accuracy of the vertical wind speed is about 0.05m/s for straight and level flight sections. For these sections, which can be obtained on the basis of the given roll and pitch angles of the aircraft, the 100 Hz data can be used to derive turbulent fluxes of momentum and sensible heat. For further informations on the data processing and accuracy of the turbulence measurement refer to Hartmann et al. (2018, doi:10.5194/amt-11-4567-2018).
description: All data are given as decimal values at 100Hz in columns in this order and meaning:t - UTC-time in seconds (since midnight)lon - longitude in degress based on WGS84lat - latitude in degress based on WGS84h - height in metres based on WGS84p - static pressure in hpa, corrected for the influence of the aircraftT - temperature from PT100, corrected for adiabatic heatingu - west-east component of wind speed in m/s, positive towards eastv - south-north component of wind speed in m/s, positive towards northw - vertical wind speed in m/spitch - pitch angle in degreesroll - roll angle in degreesthdg - true heading of the aircraft in degrees