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Dataset Title:  SRTM30+ Global 1-km Digital Elevation Model (DEM): Version 11: Land Surface Subscribe RSS
Institution:  Scripps   (Dataset ID: srtm30plus_v11_land)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 latitude (degrees_north) ?      21600    0.008333333 (even)
  < slider >
 longitude (degrees_east) ?      43200    0.008333333 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 elev (elevation, meters) ?

File type: (more info)

(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 {
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -89.99583333333334, 89.99583333333334;
    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 -179.99583333333334, 179.99583333333334;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  elev {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 6000.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Other";
    String long_name "elevation";
    String positive "up";
    String standard_name "height";
    String units "meters";
  }
  NC_GLOBAL {
    String acknowledgement "The Pacific Islands Ocean Observing System (PacIOOS) is funded through the National Oceanic and Atmospheric Administration (NOAA) as a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by the University of Hawaii School of Ocean and Earth Science and Technology (SOEST).";
    String cdm_data_type "Grid";
    String comment "These data are provided by Dr. David T. Sandwell of the Scripps Institution of Oceanography and subsequently distributed via THREDDS Data Server (TDS) and other OPeNDAP servers by the Pacific Islands Ocean Observing System (PacIOOS).";
    String contributor_name "Jim Potemra";
    String contributor_role "distributor";
    String Conventions "CF-1.6, ACDD-1.3";
    String creator_email "dsandwell@ucsd.edu";
    String creator_institution "Scripps Institution of Oceanography";
    String creator_name "David T. Sandwell";
    String creator_type "person";
    String creator_url "http://topex.ucsd.edu/WWW_html/srtm30_plus.html";
    String date_created "2014-11-29";
    String date_issued "2015-05-20";
    String date_metadata_modified "2017-01-30";
    String date_modified "2015-05-20";
    String drawLandMask "under";
    Float64 Easternmost_Easting 179.99583333333334;
    String geospatial_bounds "POLYGON ((-90 -180, 90 -180, 90 180, -90 180, -90 -180))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 89.99583333333334;
    Float64 geospatial_lat_min -89.99583333333334;
    Float64 geospatial_lat_resolution 0.008333333333333333;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.99583333333334;
    Float64 geospatial_lon_min -179.99583333333334;
    Float64 geospatial_lon_resolution 0.008333333333333333;
    String geospatial_lon_units "degrees_east";
    String history 
"PacIOOS obtained data files from Scripps ftp then masked out the ocean data and converted to NetCDF format (05/2015).
2018-07-19T13:40:07Z http://localhost:8080/thredds/dodsC/srtm30plus_v11_land
2018-07-19T13:40:07Z http://upwell.pfeg.noaa.gov/erddap/griddap/srtm30plus_v11_land.das";
    String id "srtm30plus_v11_land";
    String infoUrl "http://topex.ucsd.edu/WWW_html/srtm30_plus.html";
    String institution "Scripps";
    String instrument "Earth Remote Sensing Instruments > Active Remote Sensing > Imaging Radars > > SRTM > Shuttle Radar Topography Mission";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "elevation";
    String keywords "Earth Science > Land Surface > Topography > Terrain Elevation > Digital Elevation/Terrain Model (Dem)";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "David T. Sandwell, Walter H. F. Smith, and Joseph J. Becker Copyright 2009. The Regents of the University of California. All Rights Reserved. Permission to copy, modify and distribute any part of this gridded bathymetry at 30 second resolution for educational, research and non-profit purposes, without fee, and without a written agreement is hereby granted, provided that the above copyright notice, this paragraph and the following three paragraphs appear in all copies. Those desiring to incorporate this global bathymetry into commercial products or use for commercial purposes should contact the Technology Transfer and Intellectual Property Services, University of California, San Diego, 9500 Gilman Drive, Mail Code 0910, La Jolla, CA 92093-0910, Ph: (858) 534-5815, FAX: (858) 534-7345, E-MAIL:invent@ucsd.edu. IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS global bathymetry, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THE global bathymetry PROVIDED HEREIN IS ON AN 'AS IS' BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. THE UNIVERSITY OF CALIFORNIA MAKES NO REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER IMPLIED OR EXPRESS, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR THAT THE USE OF THE global bathymetry WILL NOT INFRINGE ANY PATENT, TRADEMARK OR OTHER RIGHTS.";
    String locations "Geographic Region > Global Land";
    String locations_vocabulary "GCMD Location Keywords";
    String Metadata_Link "http://www.pacioos.hawaii.edu/metadata/srtm30plus_v11_land.html";
    String naming_authority "org.pacioos";
    Float64 Northernmost_Northing 89.99583333333334;
    String platform "Models/Analyses > > DEM > Digital Elevation Model, Space Stations/Manned Spacecraft > Space Shuttle";
    String platform_vocabulary "GCMD Platform Keywords";
    String program "Pacific Islands Ocean Observing System (PacIOOS)";
    String project "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_email "info@pacioos.org";
    String publisher_institution "University of Hawaii";
    String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_type "group";
    String publisher_url "http://www.pacioos.hawaii.edu";
    String references "http://topex.ucsd.edu/WWW_html/srtm30_plus.html, http://www.pacioos.hawaii.edu";
    String source "USGS SRTM30 DEM, USGS GTOPO30 DEM";
    String sourceUrl "http://localhost:8080/thredds/dodsC/srtm30plus_v11_land";
    Float64 Southernmost_Northing -89.99583333333334;
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary "A global 1-km resolution land surface digital elevation model (DEM) derived from United States Geological Survey (USGS) 30 arc-second SRTM30 gridded DEM data created from the NASA Shuttle Radar Topography Mission (SRTM). GTOPO30 data are used for high latitudes where SRTM data are not available.";
    String time_coverage_duration "P0D";
    String time_coverage_resolution "P0D";
    String title "SRTM30+ Global 1-km Digital Elevation Model (DEM): Version 11: Land Surface";
    Float64 Westernmost_Easting -179.99583333333334;
  }
}

 

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://upwell.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://upwell.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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