ERDDAP > info > oceanbrowser_opendap_576c_6978_2873

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
data			graph			Black Sea, DIVAnd 4D 6-year seasonal analysis of Water body silicate 1980/2023 v2025 [ observations]		M	background			National Institut...	oceanbrowser_opendap_576c_6978_2873

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	abstract	String	Moving 6-year analysis of Water body silicate 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 2019-2023. 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: 75km. 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)
attribute	NC_GLOBAL	acknowledgement	String	Aggregated data products are generated by EMODnet Chemistry under the support of DG MARE Call for Tenders EASME/2020/OP/0006 (EASME/EMFF/2020/3.1.11/Lot 5/SI2.846161)
attribute	NC_GLOBAL	area_keywords	String	Black Sea
attribute	NC_GLOBAL	area_keywords_urn	String	SDN:C19::3_3
attribute	NC_GLOBAL	Author_e_mail	String	Gheorghe Sarbu <ghesarbu@gmail.com>, Luminita Buga <lbuga@web.de>
attribute	NC_GLOBAL	bathymetry_source	String	The GEBCO Digital Atlas published by the British Oceanographic Data Centre on behalf of IOC and IHO, 2003. Resolution used for the analysis: 30 arc-second
attribute	NC_GLOBAL	cdm_data_type	String	Grid
attribute	NC_GLOBAL	comment	String	Every year of the time dimension corresponds to a 6-year centred average for the seasons: winter (Dec-Feb), spring (Mar-May), summer (Jun-Aug), autumn (Sep-Nov). Horizontal resolution 0.05°
attribute	NC_GLOBAL	Conventions	String	CF-1.60, COARDS, ACDD-1.3
attribute	NC_GLOBAL	creator_name	String	National Institute for Marine Research and Development "Grigore Antipa"
attribute	NC_GLOBAL	creator_url	String	http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2025/By_sea_regions-water_body/Black_Sea/Water_body_silicate.4Danl.nc.html
attribute	NC_GLOBAL	date	String	2025-10-02T12:28:41
attribute	NC_GLOBAL	DIVA_code_doi	String	10.5281/zenodo.7016823
attribute	NC_GLOBAL	DIVA_references	String	Barth, A.; Beckers, J.-M.; Troupin, C.; Alvera-Azcarate, A & Vandenbulcke, L. divand-1.0: n-dimensional variational data analysis for ocean observations. Geoscientific Model Development, 2014, 7, 225-241. DOI: 10.5194/gmd-7-225-2014
attribute	NC_GLOBAL	DIVAnd_source	String	https://github.com/gher-uliege/DIVAnd.jl
attribute	NC_GLOBAL	DIVAnd_version	String	v2.7.13
attribute	NC_GLOBAL	doi	String	10.13120/097574db-2e61-42d0-86b6-e4133790007d
attribute	NC_GLOBAL	file_name	String	By_sea_regions/Black_Sea/Water_body_silicate.4Danl.nc
attribute	NC_GLOBAL	history	String	Thu Oct 9 10:45:07 2025: ncks -7 -O -L 5 --baa=4 --ppc default=3 /home/ctroupin/data/EMODnet-Chemistry/Eutrophication2024/Results/By_sea_regions-water_body/Black_Sea//By_sea_regions_Black_Sea_Water_body_silicate.4Danl.nc /home/ctroupin/data/EMODnet-Chemistry/Eutrophication2024/Results/By_sea_regions-water_body/Black_Sea//By_sea_regions_Black_Sea_Water_body_silicate.4Danl.nc
attribute	NC_GLOBAL	id	String	DatasetScan/emodnet-projects/v2025/By_sea_regions-water_body/Black_Sea/Water_body_silicate.4Danl.nc
attribute	NC_GLOBAL	infoUrl	String	http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2025/By_sea_regions-water_body/Black_Sea/Water_body_silicate.4Danl.nc.html
attribute	NC_GLOBAL	institution	String	National Institute for Marine Research and Development "Grigore Antipa"
attribute	NC_GLOBAL	institution_urn	String	SDN:EDMO::697
attribute	NC_GLOBAL	keywords	String	6-year, analysis, antipa, below, black, body, control, data, depth, development, divand, grigore, institute, latitude, level, longitude, marine, national, obsdepth, observations, obslat, obslon, obstime, quality, research, sea, seasonal, seawater, silicate, time, v2025, water, year
attribute	NC_GLOBAL	license	String	The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
attribute	NC_GLOBAL	NCO	String	netCDF Operators version 5.2.1 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco, Citation = 10.1016/j.envsoft.2008.03.004)
attribute	NC_GLOBAL	parameter_keyword	String	Water body silicate
attribute	NC_GLOBAL	parameter_keyword_urn	String	SDN:P35::EPC00008
attribute	NC_GLOBAL	product_code	String	Black_Sea-Water_body_silicate-v2025-ANA
attribute	NC_GLOBAL	product_id	String	097574db-2e61-42d0-86b6-e4133790007d
attribute	NC_GLOBAL	product_version	String	2.0
attribute	NC_GLOBAL	project	String	EMODnet-Chemistry
attribute	NC_GLOBAL	search_keywords	String	Silicate concentration parameters in the water column
attribute	NC_GLOBAL	search_keywords_urn	String	SDN:P02::SLCA
attribute	NC_GLOBAL	source	String	Observational data from SeaDataNet/EMODNet Chemistry Data Network
attribute	NC_GLOBAL	sourceUrl	String	http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-projects/v2025/By_sea_regions-water_body/Black_Sea/Water_body_silicate.4Danl.nc
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v70
attribute	NC_GLOBAL	summary	String	Black Sea - DIVAnd 4D 6-year seasonal analysis of Water body silicate 1980/2023 v2025. Moving 6-year analysis of Water body silicate 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 2019-2023. 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: 75km. 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)
attribute	NC_GLOBAL	title	String	Black Sea, DIVAnd 4D 6-year seasonal analysis of Water body silicate 1980/2023 v2025 [observations]
attribute	NC_GLOBAL	WEB_visualisation	String	https://emodnet.ec.europa.eu/geoviewer/
dimension	observations		int	nValues=54932, evenlySpaced=true, averageSpacing=1.0
attribute	observations	actual_range	int	0, 54931
attribute	observations	long_name	String	Observations
attribute	observations	units	String	count
variable	obsdepth		float	observations
attribute	obsdepth	colorBarMaximum	double	8000.0
attribute	obsdepth	colorBarMinimum	double	-8000.0
attribute	obsdepth	colorBarPalette	String	TopographyDepth
attribute	obsdepth	long_name	String	depth below sea level
attribute	obsdepth	positive	String	down
attribute	obsdepth	standard_name	String	depth
attribute	obsdepth	units	String	meters
variable	obslat		float	observations
attribute	obslat	colorBarMaximum	double	90.0
attribute	obslat	colorBarMinimum	double	-90.0
attribute	obslat	long_name	String	latitude
attribute	obslat	standard_name	String	latitude
attribute	obslat	units	String	degrees_north
variable	obslon		float	observations
attribute	obslon	colorBarMaximum	double	180.0
attribute	obslon	colorBarMinimum	double	-180.0
attribute	obslon	long_name	String	longitude
attribute	obslon	standard_name	String	longitude
attribute	obslon	units	String	degrees_east
variable	obstime		double	observations
attribute	obstime	ioos_category	String	Time
attribute	obstime	long_name	String	Time
attribute	obstime	standard_name	String	time
attribute	obstime	time_origin	String	01-JAN-1970 00:00:00
attribute	obstime	units	String	seconds since 1970-01-01T00:00:00Z

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.