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Dataset Title:	North East Atlantic Ocean, DIVA 4D 6-year analysis of Water body silicate 1971/ 2020 v2021 [time][depth][lat][lon], 0.1deg, 1974-2018
Institution:	IFREMER, SISMER, Scientific Information Systems for the SEA (Dataset ID: NorthEastAtlantic_Silicate_4D_1d41_c8b7_a7c0)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form
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Graph Type:
X Axis:
Y Axis:
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Dimensions
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time (UTC)
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depth (m)
specify just 1 value →
latitude (degrees_north)
longitude (degrees_east)
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Things You Can Do With Your Graphs

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.53792e+8, 1.5423264e+9;
    String axis "T";
    String cell_methods "time: mean";
    String climatology "climatology_bounds";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 0.0, 2000.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 24.9, 48.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -42.0, -0.09999847;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  CLfield {
    Float32 _FillValue -99.0;
    String cell_methods "time: mean";
    Float64 colorBarMaximum 4.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Correlation length field";
    Float32 missing_value -99.0;
    Float32 valid_max 3.2;
    Float32 valid_min 0.0;
  }
  Water_body_silicate {
    Float32 _FillValue -99.0;
    String cell_methods "time: mean within years time: mean over year";
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Water_body_silicate";
    Float32 missing_value -99.0;
    String standard_name "mole_concentration_of_silicate_in_sea_water";
    String units "umol/l";
  }
  Water_body_silicate_L1 {
    Float32 _FillValue -99.0;
    String cell_methods "time: mean";
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Water_body_silicate masked using relative error threshold 0.3";
    Float32 missing_value -99.0;
    String units "umol/l";
  }
  Water_body_silicate_L2 {
    Float32 _FillValue -99.0;
    String cell_methods "time: mean";
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Water_body_silicate masked using relative error threshold 0.5";
    Float32 missing_value -99.0;
    String units "umol/l";
  }
  Water_body_silicate_err {
    Float32 _FillValue -99.0;
    String cell_methods "time: mean";
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Error standard deviation of Water_body_silicate";
    Float32 missing_value -99.0;
    String units "umol/l";
  }
  Water_body_silicate_relerr {
    Float32 _FillValue -99.0;
    String cell_methods "time: mean";
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Relative error of Water_body_silicate";
    Float32 missing_value -99.0;
    Float32 valid_max 1.0;
    Float32 valid_min 0.0;
  }
  databins {
    Float32 _FillValue -99.0;
    String cell_methods "time: mean";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Logarithm10 of number of data in bins";
    Float32 missing_value -99.0;
    Float32 valid_max 2.4;
    Float32 valid_min 0.0;
  }
  outlbins {
    Float32 _FillValue -99.0;
    String cell_methods "time: mean";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Logarithm10 of number of outliers data in bins";
    Float32 missing_value -99.0;
    Float32 valid_max -99.0;
    Float32 valid_min 0.0;
  }
  NC_GLOBAL {
    String acknowledgement "Aggregated data products are generated by EMODnet Chemistry under the support of DG MARE Call for Tenders MARE/2008/03-lot3, MARE/2012/10-lot4,EASME/EMFF/2016/006-lot4, EASME/2019/OP/0003-lot4.";
    String Acknowledgements "Aggregated data products are generated by EMODnet Chemistry under the support of DG MARE Call for Tenders MARE/2008/03-lot3, MARE/2012/10-lot4,EASME/EMFF/2016/006-lot4, EASME/2019/OP/0003-lot4.";
    String area_keywords "Northeast Atlantic Ocean (40W)";
    String area_keywords_urn "SDN:C19::SVX00015";
    String Author_e_mail "Nolwenn PAGES <nolwenn.pages@ifremer.fr> Delphine LEROY <delphine.leroy@ifremer.fr> Julie GATTI <julie.gatti@ifremer.fr>";
    String bathymetry_source "resolution: 0.1Â°. The tool Diva On Web (http://ec.oceanbrowser.net/emodnet/diva.html) based on the global GEBCO Digital Atlas, 30 sec";
    String cdm_data_type "Grid";
    String comment "Every year of the time dimension corresponds to a 6-year running average for Winter (January - March), Spring (April - June), Summer (July - September) or Automn (October - December). Horizontal resolution 0.1Â° X 0.1Â°.";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_name "IFREMER, SISMER, Scientific Information Systems for the SEA";
    String creator_type "institution";
    String creator_url "https://wwz.ifremer.fr/";
    String date "2021-04-09T22:56:19";
    String DIVA_code_doi "10.5281/zenodo.1407062";
    String DIVA_references "10.1016/j.ocemod.2012.05.002";
    String DIVA_source "https://github.com/gher-ulg/DIVA";
    String DIVA_version "v4.7.2";
    String documentation "10.6092/A8CFB472-10DB-4225-9737-5A60DA9AF523";
    String doi "10.6092/468fc3aa-139d-450f-afe2-a0dc81953533";
    Float64 Easternmost_Easting -0.09999847;
    String file_name "Northeast Atlantic Ocean/Water_body_silicate.4Danl.nc";
    Float64 geospatial_lat_max 48.0;
    Float64 geospatial_lat_min 24.9;
    Float64 geospatial_lat_resolution 0.1;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -0.09999847;
    Float64 geospatial_lon_min -42.0;
    Float64 geospatial_lon_resolution 0.1000000036515513;
    String geospatial_lon_units "degrees_east";
    String history 
"Tue Jul 12 00:12:33 2022: ncks -O -x -v obslon,obslat,obsdepth,obstime,obsid /production/apache/data/emodnet-test-charles/merged/Northeast Atlantic Ocean/Water_body_silicate_year.4Danl.nc /production/apache/data/emodnet-test-charles/merged/Northeast Atlantic Ocean/Water_body_silicate_year.4Danl.nc
Fri Jul  8 12:51:41 2022: ncrcat /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_19741116.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_19750216.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_19750816.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_19751116.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_19760216.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_19760816.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_19761116.nc 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/production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_20170816.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_20171116.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_20180216.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_20180516.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_20180816.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_20181116.nc /production/apache/data/emodnet-test-charles/merged/Northeast Atlantic Ocean/Water_body_silicate_year.4Danl.nc
Fri Jul  8 12:50:18 2022: ncks -d time,0 /production/apache/data/emodnet-domains/By sea regions/Northeast Atlantic Ocean/Autumn (October-December) - 6-year running averages/Water_body_silicate.4Danl.nc /production/apache/data/emodnet-test-charles/merged/split/Northeast_Atlantic_Ocean_Water_body_silicate.4Danl.nc_19741116.nc
Mon Jun 27 14:46:31 2022: ncks -O --mk_rec_dmn time /production/apache/data/emodnet-domains/By sea regions/Northeast Atlantic Ocean/Autumn (October-December) - 6-year running averages/Water_body_silicate.4Danl.nc /production/apache/data/emodnet-domains/By sea regions/Northeast Atlantic Ocean/Autumn (October-December) - 6-year running averages/Water_body_silicate.4Danl.nc
2023-06-08T17:57:22Z http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-domains/By_sea_regions/Northeast_Atlantic_Ocean/Water_body_silicate.4Danl.nc
2023-06-08T17:57:22Z https://erddap.emodnet.eu/griddap/NorthEastAtlantic_Silicate_4D_1d41_c8b7_a7c0.das";
    String id "DatasetScan/emodnet-domains/By_sea_regions/Northeast_Atlantic_Ocean/Water_body_silicate.4Danl.nc";
    String infoUrl "http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-domains/By_sea_regions/Northeast_Atlantic_Ocean/Water_body_silicate.4Danl.nc.html";
    String institution "IFREMER, SISMER, Scientific Information Systems for the SEA";
    String institution_urn "SDN:EDMO::486";
    String keywords "6-year, analysis, atlantic, bins, body, chemistry, CLfield, concentration, correlation, data, databins, depth, deviation, diva, earth, Earth Science > Oceans > Ocean Chemistry > Silicate, east, error, exploitation, field, francais, ifremer, information, institut, latitude, length, logarithm10, longitude, masked, mer, mole, mole_concentration_of_silicate_in_sea_water, north, number, ocean, oceans, outlbins, outliers, pour, recherche, relative, science, scientific, sea, seawater, silicate, sismer, standard, systems, threshold, time, using, v2021, water, Water_body_silicate, Water_body_silicate_err, Water_body_silicate_L1, Water_body_silicate_L2, Water_body_silicate_relerr, year";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"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.";
    String NCO "netCDF Operators version 4.9.9 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco)";
    Float64 Northernmost_Northing 48.0;
    String parameter_keywords "Water body silicate";
    String parameter_keywords_urn "SDN:P35::EPC00008";
    String product_code "Atlantic-Water_body_silicate-v2021-ANA";
    String product_id "6820da10-7aa0-11e8-8311-40a8f051e8d0";
    String product_version "2.0";
    String project "EMODnet Chemistry - Phase 4";
    String search_keywords "Silicate concentration parameters in the water column";
    String search_keywords_urn "SDN:P02::SLCA";
    String source "observational data from SeaDataNet/EMODnet Chemistry Data Network";
    String sourceUrl "http://opendap.oceanbrowser.net/thredds/dodsC/data/emodnet-domains/By_sea_regions/Northeast_Atlantic_Ocean/Water_body_silicate.4Danl.nc";
    Float64 Southernmost_Northing 24.9;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "North East Atlantic Ocean - DIVA 4D 6-year analysis of Water body silicate 1971/2020 v2021. Every year of the time dimension corresponds to a 6-year running average for Winter (January - March), Spring (April - June), Summer (July - September) or Automn (October - December). Horizontal resolution 0.1Â° X 0.1Â°.";
    String time_coverage_end "2018-11-16T00:00:00Z";
    String time_coverage_start "1974-11-16T00:00:00Z";
    String title "North East Atlantic Ocean, DIVA 4D 6-year analysis of Water body silicate 1971/2020 v2021 [time][depth][lat][lon], 0.1deg, 1974-2018";
    Float64 Westernmost_Easting -42.0;
  }
}
Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link)
Data Access Protocol (DAP) (external link)
and its projection constraints (external link)
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
(easy) You can get data by using the dataset's Data Access Form. It makes the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.
griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).
For details, see the griddap Documentation.