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Dataset Title:	DIVAnd analysis of Water body silicate
Institution:	University of Liège, GeoHydrodynamics and Environment Research (Dataset ID: all_european_seas_Si_4D_43e2_14bb_c547)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form \| Files

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Graph Type:
X Axis:
Y Axis:
Color:

Dimensions

Start

Stop

time (UTC)

specify just 1 value →

depth (m)

specify just 1 value →

latitude (degrees_north)

longitude (degrees_east)

Graph Settings
Color Bar:	Continuity:	Scale:
Minimum:	Maximum:	N Sections:
Draw land mask:
Y Axis Minimum:	Maximum:

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Then set the File Type: (File Type information)
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 6.32448e+8, 6.613056e+8;
    String axis "T";
    String calendar "standard";
    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";
    Float64 actual_range 0.0, 5500.0;
    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";
    Float64 actual_range 24.0, 83.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -45.0, 70.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Water_body_silicate {
    Float32 _FillValue 9.96921e+36;
    String cell_methods "time: mean within years time: mean over years";
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Water body silicate";
    Float32 missing_value 9.96921e+36;
    String standard_name "mole_concentration_of_silicate_in_sea_water";
    String units "umol/l";
  }
  Water_body_silicate_L1 {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Water body silicate masked using relative error threshold 0.3";
    Float32 missing_value 9.96921e+36;
    String standard_name "mole_concentration_of_silicate_in_sea_water";
    String units "umol/l";
  }
  Water_body_silicate_L2 {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Water body silicate masked using relative error threshold 0.5";
    Float32 missing_value 9.96921e+36;
    String standard_name "mole_concentration_of_silicate_in_sea_water";
    String units "umol/l";
  }
  Water_body_silicate_relerr {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 0.1;
    Float64 colorBarMinimum 0.0;
    String long_name "Relative error of Water body silicate";
    Float32 missing_value 9.96921e+36;
    String units "1";
    Float32 valid_max 1.0;
    Float32 valid_min 0.0;
  }
  NC_GLOBAL {
    String area_keywords "Arctic Ocean|North Atlantic Ocean|Black Sea|Baltic Sea|North Sea|Mediterranean Sea";
    String area_keywords_urn "SDN:C19::9, SDN:C19::1, SDN:C19::3_3, SDN:C19::2, SDN:C19::1_2, SDN:C19::3_1";
    String bathymetry_source "The GEBCO Digital Atlas published by the British Oceanographic Data Centre on behalf of IOC and IHO, 2003";
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_name "University of LiÃ¨ge, GeoHydrodynamics and Environment Research";
    String creator_type "institution";
    String data_access "http://ec.oceanbrowser.net/data/emodnet-domains";
    String date "2021-05-03T13:34:43";
    String doi "https://doi.org/10.6092/cyd3-ew67";
    Float64 Easternmost_Easting 70.0;
    String file_name "/data/Case/Water_body_silicate-res-0.25-epsilon2-2.0-varlen1-lb5-maxit-5000-reltol-1.0e-9-bathcl-go-exclude-mL-1960-exNS-monthly/Results/Water_body_silicate_monthly.nc";
    Float64 geospatial_lat_max 83.0;
    Float64 geospatial_lat_min 24.0;
    Float64 geospatial_lat_resolution 0.25;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 70.0;
    Float64 geospatial_lon_min -45.0;
    Float64 geospatial_lon_resolution 0.25;
    String geospatial_lon_units "degrees_east";
    String history 
"Thu May 20 11:32:48 2021: ncks -x -v obsid,obsdepth,obslat,obslon,obstime Water_body_silicate.nc tmp.nc
2024-04-27T14:55:06Z (local files)
2024-04-27T14:55:06Z https://erddap.emodnet.eu/griddap/all_european_seas_Si_4D_43e2_14bb_c547.das";
    String infoUrl "???";
    String institution "University of Liège, GeoHydrodynamics and Environment Research";
    String institution_urn "SDN:EDMO::1579";
    String keywords "analysis, body, chemistry, concentration, data, depth, divand, earth, Earth Science > Oceans > Ocean Chemistry > Silicate, environment, error, geohydrodynamics, li\\u00c3\\u00a8ge, masked, mole, mole_concentration_of_silicate_in_sea_water, ocean, oceans, relative, research, science, sea, seawater, silicate, threshold, time, university, using, water, Water_body_silicate, Water_body_silicate_L1, Water_body_silicate_L2, Water_body_silicate_relerr";
    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 4.9.1 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco)";
    Float64 Northernmost_Northing 83.0;
    String parameter_keyword "Water body silicate";
    String parameter_keyword_urn "SDN:P35::EPC00008";
    String product_code "ULg-GHER-Arctic Ocean-Water body silicate-1.0-ANA";
    String product_id "5198eed0-ac14-11eb-0cca-715af5f9abe7";
    String product_version "1.0";
    String project "EMODNET-chemistry";
    String search_keywords "Silicate concentration parameters in the water column";
    String search_keywords_urn "SDN:P02::SLCA";
    String source "Observations from EMODnet-Chemistry";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 24.0;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "DIVAnd analysis of Water body silicate";
    String time_coverage_end "1990-12-16T00:00:00Z";
    String time_coverage_start "1990-01-16T00:00:00Z";
    String title "DIVAnd analysis of Water body silicate";
    String WEB_visualisation "http://ec.oceanbrowser.net/emodnet/";
    Float64 Westernmost_Easting -45.0;
  }
}

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.