AndreaBozzo/ceres-open-data-index huggingface dataset:
European seas - DIVAnd 4D monthly analysis of Water_body_phosphate 1960/2023 v2025

Water_body_phosphate - Monthly Climatology for the European Seas for the period 1960-2023 on the domain from longitude -45.0 to 70.0 degrees East and latitude 24.0 to 83.0 degrees North.
Data Sources: observational data from SeaDataNet/EMODnet Chemistry Data Network.
Description of DIVA analysis: The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.12, using GEBCO 30sec topography for the spatial connectivity of water masses. Horizontal correlation length and vertical correlation length vary spatially depending on the topography and domain.
Depth range: 0.0, 5.0, 10.0, 15.0, 20.0, 25.0, 30.0, 35.0, 40.0, 45.0, 50.0, 55.0, 60.0, 65.0, 70.0, 75.0, 80.0, 85.0, 90.0, 95.0, 100.0, 125.0, 150.0, 175.0, 200.0, 225.0, 250.0, 275.0, 300.0, 325.0, 350.0, 375.0, 400.0, 425.0, 450.0, 475.0, 500.0, 550.0, 600.0, 650.0, 700.0, 750.0, 800.0, 850.0, 900.0, 950.0, 1000.0, 1050.0, 1100.0, 1150.0, 1200.0, 1250.0, 1300.0, 1350.0, 1400.0, 1450.0, 1500.0, 1550.0, 1600.0, 1650.0, 1700.0, 1750.0, 1800.0, 1850.0, 1900.0, 1950.0, 2000.0, 2100.0, 2200.0, 2300.0, 2400.0, 2500.0, 2600.0, 2700.0, 2800.0, 2900.0, 3000.0, 3100.0, 3200.0, 3300.0, 3400.0, 3500.0, 3600.0, 3700.0, 3800.0, 3900.0, 4000.0, 4100.0, 4200.0, 4300.0, 4400.0, 4500.0, 4600.0, 4700.0, 4800.0, 4900.0, 5000.0, 5100.0, 5200.0, 5300.0, 5400.0, 5500.0 m.
Units: umol/l.
The horizontal resolution of the produced DIVAnd analysis is 0.25 degrees.
European floating micro-litter standardized, harmonized and validated datasets 2011/2020 v2023

EMODnet Chemistry aims to provide access to marine chemistry data sets and derived data products concerning eutrophication, ocean acidification, contaminants and litter. The chosen parameters are relevant for the Marine Strategy Framework Directive (MSFD), in particular for descriptors 5, 8, 9 and 10. These datasets contain standardized, harmonized and validated data collections of floating micro-litter. 
For floating micro-litter, the harmonized datasets contain all unrestricted EMODnet Chemistry data on floating micro-litter data. Data was harmonized  by ‘Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Division of Oceanography (OGS/NODC)’ from Italy.		
Data is formatted following Guidelines and formats for gathering and management of micro-litter data sets on a European scale (floating and sediment micro-litter), which can be found at: https://doi.org/10.6092/d3e239ec-f790-4ee4-9bb4-c32ef39b426d. Parameter names in these datasets are based on P01, Parameter Usage Vocabulary, which is available at: https://vocab.seadatanet.org/p01-facet-search. Each measurement value has a quality flag indicator. The resulting data collections are harmonized, using ODV Software and following a common methodology for all Sea Regions. 
Harmonization means that: (1) unit conversion is carried out to express variables with a limited set of measurement units and (2) merging of variables described by different “local names”, but corresponding exactly to the same concepts in BODC P01 vocabulary.
The harmonized dataset can be downloaded as ODV collection that can be opened with ODV software for visualization (More information can be found at: https://www.seadatanet.org/Software/ODV).  The same dataset is offered as spreadsheet (txt format, tab separated values) where the values of the categories for the following reported parameters (type, shape, size, color, transparency and material) have been uniformed as labelled in the SeaDataNet H01, H02, H03, H04, H05, H06 vocabularies (https://vocab.seadatanet.org/search). This format is more adapted to worksheet applications (e.g. LibreOffice Calc).
Arctic Ocean - DIVAnd 4D 6-year seasonal analysis of Water body silicate 1970/2024 v2025

Moving 6-year analysis of silicate in the Arctic Ocean, for each season in the period 1970-2024. Every year of the time dimension corresponds to the 6-year centered average for each season. Winter: December-February, Spring: March-May, Summer: June-August, Autumn: September-November. Depth range (IODE standard depths): 0, 5, 10, 20, 30, 40, 50, 75, 100, 125, 150, 200, 250, 300, 400, ..., 1500, 1750, 2000, 2500m. Units: umol/l. Description of DIVA analysis: The computation was done with DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.13, using GEBCO 30sec topography for the spatial connectivity of water masses. The horizontal resolution of the produced DIVAnd maps grids is 0.125 degrees.  Signal-to-noise ratio was fixed to 3.0, horizontal correlation length varying from 45 km near the coast to 150 km, and vertical correlation length varying between 25 and 1000 m. Logarithmic transformation is applied to the data prior to the analysis. Background field: analysis with signal-to-noise ratio = 20, horizontal correlation length 50-200 km, and vertical correlation length 25-1000 m.
Baltic Sea - DIVAnd 4D 6-year seasonal analysis of Water body phosphate 1955/2023 v2025

Running 6-year analysis of Water body phosphate in the Baltic Sea. 
    Four seasons (March-May, June-August, September-November, December-February). 
    Every year of the time dimension corresponds to a 6-year centred average. 
    Periods span between 1955-2023. 
    Analyses for depths (m) (HELCOM standard depths): 0, 5, 10, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 175, 200, 225, 250, 275, 300.
    
    Data Sources: observational data from SeaDataNet/EMODnet Chemistry Data Network. 
    Description of DIVA analysis: Geostatistical data analysis by DIVAnd (Data-Interpolating Variational Analysis in n dimensions) tool. 
    GEBCO_08 Grid (30 arc-seconds) topography is used for the contouring preparation. 
    Files contain analysed fields, error fields and combined field with the deepest value for each grid point selected. 
    Also pre-masked fields using relative error threshold 0.3 and 0.5 are included. 
    In the analyses the horizontal correlation length is fixed to 80 km and decreasing towards the coastline, 
    the vertical correlation length is varying with depth.
    Signal to noise ratio is fixed to 1.0. 
    Background fields were created using data for the given time period and season. 
    Log transformation was used in the analyses. No detrending, advection constraints or weighting are applied. 
    Unit is umol/l.
Arctic Ocean - DIVAnd 4D 6-year seasonal analysis of Water body dissolved oxygen concentration 1965/2024 v2025

Moving 6-year analysis of dissolved oxygen concentration in the Arctic Ocean, for each season in the period 1965-2024. Every year of the time dimension corresponds to the 6-year centered average for each season. Winter: December-February, Spring: March-May, Summer: June-August, Autumn: September-November. Depth range (IODE standard depths): 0, 5, 10, 20, 30, 40, 50, 75, 100, 125, 150, 200, 250, 300, 400, ..., 1500, 1750, 2000, 2500m. Units: umol/l. Description of DIVA analysis: The computation was done with DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.13, using GEBCO 30sec topography for the spatial connectivity of water masses. The horizontal resolution of the produced DIVAnd maps grids is 0.125 degrees.  Signal-to-noise ratio was fixed to 3.0, horizontal correlation length varying from 45 km near the coast to 150 km, and vertical correlation length varying between 25 and 1000 m. Logarithmic transformation is applied to the data prior to the analysis. Background field: analysis with signal-to-noise ratio = 20, horizontal correlation length 50-200 km, and vertical correlation length 25-1000 m.
Baltic Sea - DIVAnd 4D 6-year seasonal analysis of Water body dissolved inorganic nitrogen 1975/2023 v2025

Running 6-year analysis of Water body dissolved inorganic nitrogen in the Baltic Sea. 
    Four seasons (March-May, June-August, September-November, December-February). 
    Every year of the time dimension corresponds to a 6-year centred average. 
    Periods span between 1975-2023. 
    Analyses for depths (m) (HELCOM standard depths): 0, 5, 10, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 175, 200, 225, 250, 275, 300.
    
    Data Sources: observational data from SeaDataNet/EMODnet Chemistry Data Network. 
    Description of DIVA analysis: Geostatistical data analysis by DIVAnd (Data-Interpolating Variational Analysis in n dimensions) tool. 
    GEBCO_08 Grid (30 arc-seconds) topography is used for the contouring preparation. 
    Files contain analysed fields, error fields and combined field with the deepest value for each grid point selected. 
    Also pre-masked fields using relative error threshold 0.3 and 0.5 are included. 
    In the analyses the horizontal correlation length is fixed to 80 km and decreasing towards the coastline, 
    the vertical correlation length is varying with depth.
    Signal to noise ratio is fixed to 1.0. 
    Background fields were created using data for the given time period and season. 
    Log transformation was used in the analyses. No detrending, advection constraints or weighting are applied. 
    Unit is umol/l.
Baltic Sea - DIVAnd 4D 6-year seasonal analysis of Water body chlorophyll-a 1974/2023 v2025

Running 6-year analysis of Water body chlorophyll-a in the Baltic Sea. 
    Four seasons (March-May, June-August, September-November, December-February). 
    Every year of the time dimension corresponds to a 6-year centred average. 
    Periods span between 1974-2023. 
    Analyses for depths (m) (HELCOM standard depths): 0, 5, 10, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 175, 200, 225, 250, 275, 300.
    
    Data Sources: observational data from SeaDataNet/EMODnet Chemistry Data Network. 
    Description of DIVA analysis: Geostatistical data analysis by DIVAnd (Data-Interpolating Variational Analysis in n dimensions) tool. 
    GEBCO_08 Grid (30 arc-seconds) topography is used for the contouring preparation. 
    Files contain analysed fields, error fields and combined field with the deepest value for each grid point selected. 
    Also pre-masked fields using relative error threshold 0.3 and 0.5 are included. 
    In the analyses the horizontal correlation length is fixed to 80 km and decreasing towards the coastline, 
    the vertical correlation length is varying with depth.
    Signal to noise ratio is fixed to 1.0. 
    Background fields were created using data for the given time period and season. 
    Log transformation was used in the analyses. No detrending, advection constraints or weighting are applied. 
    Unit is mg/m3.
Baltic Sea - Gulf of Riga - DIVAnd 4D seasonal analysis of Water body chlorophyll-a 1999/2022 v2025

Water body chlorophyll-a - Seasonal Climatology for Gulf of Riga for the period  1999-2022. 
    Four seasons (March-May, June-August, September-November, December-February). 
    Analyses for depths (m) (HELCOM standard depths): 0, 5, 10, 15, 20, 25, 30, 40, 50.
    
    Data Sources: observational data from SeaDataNet/EMODnet Chemistry Data Network.
    
    Description of DIVAnd analysis: Geostatistical data analysis by DIVA (Data-Interpolating Variational Analysis) tool. 
    GEBCO_04 Grid (30 arc-seconds) topography is used for the contouring preparation. 
    Files contain analysed fields, error fields and combined field with the deepest value for each grid point selected. 
    Also pre-masked fields using relative error threshold 0.3 and 0.5 are included. 
    In the analyses the horizontal correlation length is fixed to 25 km and decreasing towards the coastline, 
    the vertical correlation length is varying with depth.
    Signal to noise ratio were fixed to 1.0. 
    Log transformation was used in the analyses. No detrending, advection constraints or weighting are applied. 
    The horizontal resolution of the produced DIVAnd maps grids is 0.01 degrees.
    Unit is mg/m3.
Black Sea - DIVAnd 4D 6-year seasonal analysis of Water body chlorophyll-a 1990/2023 v2025

Moving 6-year analysis of Water body chlorophyll-a in Black Sea for each season: winter (December-February), spring (March-May), summer (June-August), autumn (September-November). Every year of the time dimension corresponds to the 6-year centered average of the season. 6-years periods span from 1990-1995 until 2018-2023.
Data Sources: observational data from SeaDataNet/EMODNet Chemistry Data Network.
Units: mg/m^3.
DIVA analysis: The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.13, using GEBCO 30sec topography for the spatial connectivity of water masses.
The horizontal resolution of the produced DIVAnd maps grids is 0.05 degrees.
The vertical resolution is 7 depth levels: 0, 5, 10, 20, 30, 40, 50m.
The horizontal correlation length: 80km.
The vertical correlation length (in meters):  twice the vertical resolution (10, 10, 20, 20, 20, 20, 20).
The error variance (epsilon2): 1 
An anamorphosis transformation was applied to the data: threshold value=200.
Background field: not used.
Quality control of the observations was applied using the interpolated field: QCMETHOD=3 and visual inspection (Observations with residuals outside the minimum and maximum values of the 99% quantile were discarded from the analysis after thoroughly visual inspection).
Black Sea - DIVAnd 4D 6-year seasonal analysis of Water body dissolved oxygen concentration 1980/2024 v2025

Moving 6-year analysis of Water body dissolved oxygen concentration in Black Sea for each season: winter (December-February), spring (March-May), summer (June-August), autumn (September-November). Every year of the time dimension corresponds to the 6-year centered average of the season. 6-years periods span from 1980-1985 until 2019-2024.
Data Sources: observational data from SeaDataNet/EMODNet Chemistry Data Network.
Units: umol/l.
DIVA analysis: The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.13, using GEBCO 30sec topography for the spatial connectivity of water masses
The horizontal resolution of the produced DIVAnd maps grids is 0.05 degrees.
The vertical resolution is 16 depth levels: 0, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 200, 250m
The horizontal correlation length: 100km.
The vertical correlation length (in meters):  twice the vertical resolution (10, 10, 20, 20, 20, 20, 20, 20, 20, 20, 20, 50, 50, 100, 100, 100).
The error variance (epsilon2): 1 
An anamorphosis transformation was applied to the data: threshold value=200.
Background field: not used.
Quality control of the observations was applied using the interpolated field: QCMETHOD=3 and visual inspection (Observations with residuals outside the minimum and maximum values of the 99% quantile were discarded from the analysis after thoroughly visual inspection)
Black Sea - DIVAnd 4D 6-year seasonal analysis of Water body phosphate 1980/2023 v2025

Moving 6-year analysis of Water body phosphate in Black Sea for each season: winter (December-February), spring (March-May), summer (June-August), autumn (September-November). Every year of the time dimension corresponds to the 6-year centered average of the season. 6-years periods span from 1980-1985 until 2018-2023.
Data Sources: observational data from SeaDataNet/EMODNet Chemistry Data Network.
Units: umol/l.
DIVA analysis: The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.13, using GEBCO 30sec topography for the spatial connectivity of water masses.
The horizontal resolution of the produced DIVAnd maps grids is 0.05 degrees.
The vertical resolution is 15 depth levels: 0, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 200m
The horizontal correlation length: 80km.
The vertical correlation length (in meters):  twice the vertical resolution (10, 10, 20, 20, 20, 20, 20, 20, 20, 20, 20, 50, 50, 100, 100).
The error variance (epsilon2): 1 
An anamorphosis transformation was applied to the data: threshold value=200.
Background field: not used.
Quality control of the observations was applied using the interpolated field: QCMETHOD=3 and visual inspection (Observations with residuals outside the minimum and maximum values of the 99% quantile were discarded from the analysis after thoroughly visual inspection)
Mediterranean Sea - Po River - DIVAnd 4D seasonal analysis of Water body dissolved inorganic nitrogen (DIN) 1977/2022 v2025

Water body dissolved inorganic nitrogen (DIN) - Seasonal Climatology for Po River for the period 1977-2022 on the domain: Lon E12.0-14.0deg., Lat N44.0-46.0deg.
Description of DIVA analysis: The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.12, using GEBCO 30sec topography for the spatial connectivity of water masses.
The horizontal resolution of the produced DIVAnd maps grids is dx=dy=0.009 degrees (around 975m and 708m accordingly).
The vertical resolution is 14 depth levels: [0., 2., 4., 6., 8., 10., 15., 20., 25., 30., 40., 50., 60., 70.].
A relative correlation length used based on topography gradients and the horizontal correlation length varies from 25 km to 12.5 km. The vertical correlation length (in meters) is:  [4.,4.,4.,4.,4.,10.,10.,10.,10.,20.,20.,20.,20.,20.]. 
Duplicates check was performed using the following criteria for space and time: dlon=0.01deg., dlat=0.01deg., ddepth=0.01m, dtime=1min, dvalue=0.01.
The error variance (epsilon2) was set equal to 1. Data weight was reduced at shallow waters. Data weighting was applied with the following threshold values: lon=0.03, lat=0.03, depth=2.
An anamorphosis transformation was applied to the data (function DIVAnd.Anam.loglin) to avoid unrealistic negative values: threshold value=200.
The mean value was used as background analysis field.
Quality control of the observations was applied using the interpolated field (QCMETHOD=3). Residuals (differences between the observations and the analysis (interpolated linearly to the location of the observations) were calculated. Observations with residuals outside the minimum and maximum values of the 99% quantile were discarded from the analysis. 
Seasons definition: Winter=Jan-Mar, Spring=Apr-Jun, Summer=Jul-Sep, Autumn=Oct-Dec.
Originators of Italian data sets-List of contributors:
- Brunetti Fabio (OGS)
- Cardin Vanessa, Bensi Manuel doi:10.6092/36728450-4296-4e6a-967d-d5b6da55f306
- Cardin Vanessa, Bensi Manuel, Ursella Laura, Siena Giuseppe doi:10.6092/f8e6d18e-f877-4aa5-a983-a03b06ccb987
- Cataletto Bruno (OGS)
- Cinzia Comici Cinzia (OGS)
- Civitarese Giuseppe (OGS)
- DeVittor Cinzia (OGS)
- Giani Michele (OGS)
- Kovacevic Vedrana (OGS)
- Mosetti Renzo (OGS)
- Solidoro C.,Beran A.,Cataletto B.,Celussi M.,Cibic T.,Comici C.,Del Negro P.,De Vittor C.,Minocci M.,Monti M.,Fabbro C.,Falconi C.,Franzo A.,Libralato S.,Lipizer M.,Negussanti J.S.,Russel H.,Valli G., doi:10.6092/e5518899-b914-43b0-8139-023718aa63f5
- Celio Massimo (ARPA FVG)
- Malaguti Antonella (ENEA)
- Fonda Umani Serena (UNITS)
- Bignami Francesco (ISAC/CNR)
- Boldrini Alfredo (ISMAR/CNR)
- Marini Mauro (ISMAR/CNR)
- Miserocchi Stefano (ISMAR/CNR)
- Zaccone Renata (IAMC/CNR)
- Lavezza, R., Dubroca, L. F. C., Ludicone, D., Kress, N., Herut, B., Civitarese, G., Cruzado, A., Lefèvre, D.,Souvermezoglou, E., Yilmaz, A., Tugrul, S., and Ribera d'Alcala, M.: Compilation of quality controlled nutrient profiles from the Mediterranean Sea, doi:10.1594/PANGAEA.771907, 2011.
Northeast Atlantic Ocean - DIVAnd 4D seasonal 6-year average analysis of Water body dissolved inorganic nitrogen 1971/2024 v2025

Moving 6-year analysis of Water body dissolved inorganic nitrogen in the NorthEast Atlantic for each season:
 - winter: January-March,
 - spring: April-June,
 - summer: July-September,
 - autumn: October-December. 
Every year of the time dimension corresponds to the 6-year centred average of each season. 6-year periods span from 1971/1976 until 2019/2024. Observation data span from 1971 to 2024. 
Depth levels (IODE standard depths): [0.0, 5.0, 10.0, 20.0, 30.0, 40.0, 50.0, 75.0, 100.0, 125.0, 150.0, 200.0, 250.0, 300.0, 400.0, 500.0, 600.0, 700.0, 800.0, 900.0, 1000.0, 1100.0, 1200.0, 1300.0, 1400.0, 1500.0, 1750.0, 2000.0]. 
Data sources: observational data from SeaDataNet/EMODNet Chemistry Data Network. 
Description of DIVAnd analysis: the computation was done with DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.12, using GEBCO 30 sec topography for the spatial connectivity of water masses. The horizontal resolution of the produced DIVAnd maps is 0.1 degrees. Horizontal correlation length varies from 400km in open sea regions to 50km at the coast. Vertical correlation length is defined as twice the vertical resolution. Signal-to-noise ratio was fixed to 1 for vertical profiles and 0.1 for time series to account for the redundancy in the time series observations. A logarithmic transformation (DIVAnd.loglin) was applied to the data prior to the analysis. Background field: a vertically-filtered profile of the seasonal data mean value (including all years) is substracted from the data. 
Detrending of data: no, advection constraint applied: no. 
Units: umol/l.
Contaminants: Pesticides - Hexachlorobenzene (median values), v2024

This product displays for Hexachlorobenzene, median values since 2012 that have been measured per matrix and are present in EMODnet regional contaminants aggregated datasets, v2024. The median values ranges are derived from the following percentiles: 0-25%, 25-75%, 75-90%, >90%. Only "good data" are used, namely data with Quality Flag=1, 2, 6, Q (SeaDataNet Quality Flag schema). For water, only surface values are used (0-15 m), for sediment and biota data at all depths are used.
Contaminants: Pesticides - DDT-DDE-DDD (median values), v2023

This product displays for DDT, DDE, and DDD, median values of the last 6 available years that have been measured per matrix and are present in EMODnet regional contaminants aggregated datasets, v2022. The median values ranges are derived from the following percentiles: 0-25%, 25-75%, 75-90%, >90%. Only "good data" are used, namely data with Quality Flag=1, 2, 6, Q (SeaDataNet Quality Flag schema). For water, only surface values are used (0-15 m), for sediment and biota data at all depths are used.
Contaminants: Pesticides - DDT-DDE-DDD (median values), v2024

This product displays for DDT, DDE, and DDD, median values since 2012 that have been measured per matrix and are present in EMODnet regional contaminants aggregated datasets, v2024. The median values ranges are derived from the following percentiles: 0-25%, 25-75%, 75-90%, >90%. Only "good data" are used, namely data with Quality Flag=1, 2, 6, Q (SeaDataNet Quality Flag schema). For water, only surface values are used (0-15 m), for sediment and biota data at all depths are used.