ERDDAP > griddap > Data Access Form

Dataset Title:	Sea Ice Lat-Lon Grid, OSI SAF EUMETSAT, Antarctic, Polar Stereographic, 10km
Institution:	EUMETSAT OSI SAF   (Dataset ID: eumetsat_osisaf_grid_sh_ps)
Information:	Summary | License | Metadata | Background | Make a graph

 

Dimensions	Start	Stride	Stop	Size	Spacing
yc (km)				830	-10.0 (even)
xc (km)				790	10.0 (even)

Grid Variables (which always also download all of the dimension variables)

lat (latitude coordinate, degrees_north)

lon (longitude coordinate, degrees_east)

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriAscii - Download an ISO-8859-1 ESRI ASCII file (latitude longitude data only; longitude must be all below or all above 180). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .graph - View a Make A Graph web page. .help - View a web page with a description of griddap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each axis variable and each data variable becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncml - View the dataset's structure and metadata as a UTF-8 NCML .xml file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download time,latitude,longitude,otherVariables as an ODV Generic Spreadsheet File (.txt). .timeGaps - View a UTF-8 list of gaps in the time values which are larger than the median gap. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .geotif - View a grayscale GeoTIFF .tif file (for latitude longitude data; longitude must be all below or all above 180). .kml - View a Google Earth .kml file (for latitude, longitude data only). .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

(Documentation / Bypass this form)
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  yc {
    Float64 actual_range -3950.0, 4340.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "y coordinate in Cartesian system";
    String standard_name "projection_y_coordinate";
    String units "km";
  }
  xc {
    Float64 actual_range -3950.0, 3940.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "x coordinate in Cartesian system";
    String standard_name "projection_x_coordinate";
    String units "km";
  }
  lat {
    Float64 colorBarMaximum 0.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "latitude coordinate";
    String standard_name "latitude";
    String units "degrees_north";
  }
  lon {
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "longitude coordinate";
    String standard_name "longitude";
    String units "degrees_east";
  }
  NC_GLOBAL {
    String abstract "The daily analysis of sea ice concentration is obtained from operation satellite images of the polar regions. It is based on atmospherically corrected signal and a carefully selected sea ice concentration algorithm. This product is freely available from the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSI SAF).";
    String activity_type "Space borne instrument";
    String area "Southern Hemisphere";
    String cdm_data_type "Grid";
    String contact "osisaf-manager@met.no";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String copyright_statement "Copyright 2024 EUMETSAT";
    String creator_email "osisaf-manager@met.no";
    String creator_name "EUMETSAT";
    String creator_type "institution";
    String creator_url "https://www.eumetsat.int/website/home/index.html";
    String defaultGraphQuery "lat%5B%285845.0%29%3A%28-5345.0%29%5D%5B%28-3845.0%29%3A%283745.0%29%5D%26.draw%3Dsurface%26.vars%3Dxc%257Cyc%257Clat%26.colorBar%3DKT_gray";
    String distribution_statement "Free";
    String gcmd_keywords 
"Cryosphere > Sea Ice > Sea Ice Concentration
Oceans > Sea Ice > Sea Ice Concentration
Geographic Region > Southern Hemisphere
Vertical Location > Sea Surface
EUMETSAT/OSISAF > Satellite Application Facility on Ocean and Sea Ice, European Organisation for the Exploitation of Meteorological Satellites";
    String history 
"Created 2024-03-24 04:02:26
2024-04-20T07:52:23Z https://thredds.met.no/thredds/dodsC/osisaf/met.no/ice/conc_sh_pol_agg
2024-04-20T07:52:23Z https://polarwatch.noaa.gov/erddap/griddap/eumetsat_osisaf_grid_sh_ps.das";
    String infoUrl "https://thredds.met.no/thredds/dodsC/osisaf/met.no/ice/conc_sh_pol_agg.html";
    String institution "EUMETSAT OSI SAF";
    String instrument_type "SSMIS (Multi-sensor analysis)";
    String keywords "agg, analysis, application, climate, conc, concentration, coordinate, daily, data, day, eumetsat, european, exploitation, facility, ice, laboratory, latitude, longitude, meteorological, meteorology, ocean, oceanographic, oceanography, organisation, osi, osisaf, pol, proudman, remote sensing, saf, satellite, satellites, sea, sea ice, sea ice concentration";
    String license "Free";
    String netcdf_version "1.5.4";
    String PI_name "Fabrizio Baordo";
    String platform_name "SSMIS F16, F17, F18";
    String product_id "OSI-401-d";
    String product_name "osi_saf_ice_conc_l3";
    String product_status "operational";
    String product_version "4.1";
    String project_name "EUMETSAT OSI SAF";
    String references "Product User Manual and Algorithm Theoretical Basis Document available at https://osi-saf.eumetsat.int/documentation/products-documentation";
    String software_version "2.0.4";
    String sourceUrl "https://thredds.met.no/thredds/dodsC/osisaf/met.no/ice/conc_sh_pol_agg";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "The daily analysis of sea ice concentration is obtained from operation satellite images of the polar regions. It is based on atmospherically corrected signal and a carefully selected sea ice concentration algorithm. This product is freely available from the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) Ocean and Sea Ice Satellite Application Facility (OSI SAF).";
    String title "Sea Ice Lat-Lon Grid, OSI SAF EUMETSAT, Antarctic, Polar Stereographic, 10km";
    String topiccategory "Oceans Climatology Meteorology Atmosphere";
  }
}

 

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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 Data Access Protocol (DAP) and its projection constraints.

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.

 

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