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Dataset Title:  Polar Stereographic Grid Cell Area Values of 25km gridded data sets , Polar
Stereographic (South), Ancillary Data Subscribe RSS
Institution:  NASA National Snow and Ice Data Center Distributed Active Archive Center   (Dataset ID: pstere_gridcell_S25k)
Information:  Summary ? | License ? | Metadata | Background (external link) | Files | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 y (meters) ?      332    -25000.0 (even)
  < slider >
 x (meters) ?      316    25000.0 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables) 
 cell_area (Grid Cell area, meters^2) ?

File type: (more information)

(Documentation / Bypass this form) ?
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  y {
    Float64 actual_range -3937500.0, 4337500.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "y coordinate of projection";
    String standard_name "projection_y_coordinate";
    String units "meters";
    Float64 valid_range -3950000.0, 4350000.0;
  }
  x {
    Float64 actual_range -3937500.0, 3937500.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "x coordinate of projection";
    String standard_name "projection_x_coordinate";
    String units "meters";
    Float64 valid_range -3950000.0, 3950000.0;
  }
  cell_area {
    Float64 colorBarMaximum 7.0e+8;
    Float64 colorBarMinimum 3.0e+8;
    String comment "Surface area of grid cell";
    String coverage_content_type "image";
    String ioos_category "Unknown";
    String long_name "Grid Cell area";
    Float64 missing_value -999.0;
    String standard_name "cell_area";
    String units "meters^2";
    Float64 valid_range 4.440523962897692e+8, 6.644483028325195e+8;
  }
  NC_GLOBAL {
    String acknowledgement "These data are produced and supported by the NASA National Snow and Ice Data Center Distributed Active Archive Center.";
    String cdm_data_type "Grid";
    String contributor_name "J. Scott Stewart, Walter N. Meier, Donna J. Scott";
    String contributor_role "Scientific Programmer, Project Scientist, Project Lead";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String creator_name "NASA National Snow and Ice Data Center Distributed Active Archive Center";
    String creator_type "group";
    String creator_url "https://www.nasa.gov/";
    String date_created "2022-03-21";
    String date_metadata_modified "2022-03-21";
    String date_modified "2022-03-21";
    String geospatial_bounds "POLYGON ((-3950000 4350000, 3950000 4350000, 3950000 -3950000, -3950000 -3950000, -3950000 4350000))";
    String geospatial_bounds_crs "EPSG:3412";
    String geospatial_x_resolution "25000 meters";
    String geospatial_x_units "meters";
    String geospatial_y_resolution "25000 meters";
    String geospatial_y_units "meters";
    String grid_mapping_crs_wkt "PROJCS[\"NSIDC Sea Ice Polar Stereographic North\",GEOGCS[\"Unspecified datum based upon the Hughes 1980 ellipsoid\",DATUM[\"Not_specified_based_on_Hughes_1980_ellipsoid\",SPHEROID[\"Hughes 1980\",6378273,298.279411123061,AUTHORITY[\"EPSG\",\"7058\"]],AUTHORITY[\"EPSG\",\"6054\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4054\"]],PROJECTION[\"Polar_Stereographic\"],PARAMETER[\"latitude_of_origin\",70],PARAMETER[\"central_meridian\",-45],PARAMETER[\"scale_factor\",1],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"X\",EAST],AXIS[\"Y\",NORTH],AUTHORITY[\"EPSG\",\"3411\"]]";
    Float64 grid_mapping_false_easting 0.0;
    Float64 grid_mapping_false_northing 0.0;
    String grid_mapping_GeoTransform "-3850000 25000 0 5850000 0 -25000";
    Float64 grid_mapping_inverse_flattening 298.279411123064;
    Float64 grid_mapping_latitude_of_projection_origin 90.0;
    String grid_mapping_long_name "NSIDC_NH_PolarStereo_25km";
    Float64 grid_mapping_longitude_of_prime_meridian 0.0;
    String grid_mapping_name "polar_stereographic";
    String grid_mapping_proj4text "+proj=stere +lat_0=90 +lat_ts=70 +lon_0=-45 +k=1 +x_0=0 +y_0=0 +a=6378273 +b=6356889.449 +units=m +no_defs";
    Float64 grid_mapping_semi_major_axis 6378273.0;
    String grid_mapping_spatial_ref "PROJCS[\"NSIDC Sea Ice Polar Stereographic North\",GEOGCS[\"Unspecified datum based upon the Hughes 1980 ellipsoid\",DATUM[\"Not_specified_based_on_Hughes_1980_ellipsoid\",SPHEROID[\"Hughes 1980\",6378273,298.279411123061,AUTHORITY[\"EPSG\",\"7058\"]],AUTHORITY[\"EPSG\",\"6054\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4054\"]],PROJECTION[\"Polar_Stereographic\"],PARAMETER[\"latitude_of_origin\",70],PARAMETER[\"central_meridian\",-45],PARAMETER[\"scale_factor\",1],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"X\",EAST],AXIS[\"Y\",NORTH],AUTHORITY[\"EPSG\",\"3411\"]]";
    String grid_mapping_srid "urn:ogc:def:crs:EPSG::3411";
    Float64 grid_mapping_standard_parallel 70.0;
    Float64 grid_mapping_straight_vertical_longitude_from_pole -45.0;
    String history 
"2024-09-17T21:45:23Z (local files)
2024-09-17T21:45:23Z https://polarwatch.noaa.gov/erddap/griddap/pstere_gridcell_S25k.das";
    String id "10.5067/N6INPBT8Y104";
    String infoUrl "https://doi.org/10.5067/N6INPBT8Y104";
    String institution "NASA National Snow and Ice Data Center Distributed Active Archive Center";
    String keywords "active, analysis, ancillary, archive, area, cell, cell_area, center, data, distributed, earth, EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS, geographic, grid, ice, information, nasa, national, nsidc, polar, science, services, snow, stereo, systems, visualization";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Access Constraint: These data are freely, openly, and fully accessible, provided that you are logged into your NASA Earthdata profile (https://urs.earthdata.nasa.gov/);  Use Constraint: These data are freely, openly, and fully available to use without restrictions, provided that you cite the data according to the recommended citation at https://nsidc.org/about/use_copyright.html. For more information on the NASA EOSDIS Data Use Policy, see https://earthdata.nasa.gov/earth-observation-data/data-use-policy.";
    String metadata_link "https://doi.org/10.5067/N6INPBT8Y104";
    String naming_authority "org.doi.dx";
    String product_version "1.0";
    String program "NASA Earth Science Data and Information System (ESDIS)";
    String publisher_email "nsidc@nsidc.org";
    String publisher_institution "National Snow and Ice Data Center; Cooperative Institute for Research in Environmental Sciences; University of Colorado at Boulder; Boulder, CO";
    String publisher_name "NASA National Snow and Ice Data Center Distributed Active Archive Center";
    String publisher_type "institution";
    String publisher_url "https://nsidc.org/daac";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "This data set provides the total on-Earth surface area values at the center of each grid cell of 25km polar stereographic gridded data sets (South) distributed by The National Snow and Ice Data Center";
    String title "Polar Stereographic Grid Cell Area Values of 25km gridded data sets , Polar Stereographic (South), Ancillary Data";
  }
}

 

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.

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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