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Dataset Title:  Topography, SRTM30+ Version 6.0, 30 arc second, Global
Dataset ID:  usgsCeSrtm30v6
Institution:  Scripps
Information:  Summary | Variables | Background | Data Access Form  

Graph Type: 
X Axis: 
Y Axis: 
Color: 

Dimension Ranges    Start    Stop
latitude (degrees_north)
   
   
longitude (degrees_east)
   
   

Graph Settings
Color Bar:    Continuity:    Scale:
      Min:    Max:    N Sections:
Draw the land mask:

Then set the File Type: and
  or view the URL:
    The graph you specified. Please be patient. It may take a long time to get data from the source.

Things You Can Do With Your Graphs

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 90.0, -89.99166666666667;
    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 -180.0, 179.99166666666667;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  topo {
    Int16 _FillValue -9999;
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "Topography";
    String grid_mapping "GDAL_Geographics";
    String ioos_category "Location";
    String long_name "Topography";
    String standard_name "altitude";
    String units "meters";
  }
  NC_GLOBAL {
    String AREA_OR_POINT "Area";
    String cdm_data_type "Grid";
    String Conventions "COARDS, CF-1.0, Unidata Dataset Discovery v1.0";
    String creator_email "jjbecker@ucsd.edu, dsandwell@ucsd.edu";
    String history 
"2009-02-18 http://coast-enviro.er.usgs.gov/thredds/dodsC/bathy/srtm30plus_v6
2009-02-18 http://coastwatch.pfeg.noaa.gov/griddap/usgsCeSrtm30v6.das";
    String infoUrl "http://topex.ucsd.edu/WWW_html/srtm30_plus.html";
    String institution "Scripps";
    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 reference 
"Becker, J. J., D. T. Sandwell, W. H. F. Smith, J. Braud, B. Binder, J. 
Depner, D. Fabre, J. Factor, S. Ingalls, S-H. Kim, R. Ladner, K. Marks, S. 
Nelson, A. Pharaoh, G. Sharman, R. Trimmer, J. vonRosenburg, G. Wallace, P. 
Weatherall., Global Bathymetry and Elevation Data at 30 Arc Seconds 
Resolution: SRTM30_PLUS, revised for Marine Geodesy, January 20, 2009";
    String sourceUrl "http://coast-enviro.er.usgs.gov/thredds/dodsC/bathy/srtm30plus_v6";
    String standard_name_vocabulary "CF-1.0";
    String summary 
"This is global topography data. The grid resolution is 30 seconds which is 
roughly one kilometer.

Land data are based on the 1-km averages of topography derived from the USGS 
SRTM30 grided DEM data product created with data from the NASA Shuttle Radar 
Topography Mission. GTOPO30 data are used for high latitudes where SRTM data 
are not available.

Ocean data are based on the Smith and Sandwell global 1-minute grid between 
latitudes +/- 81 degrees. Higher resolution grids have been added from the 
LDEO Ridge Multibeam Synthesis Project, the JAMSTEC Data Site for Research 
Cruises, and the NGDC Coastal Relief Model. Arctic bathymetry is from the 
International Bathymetric Chart of the Oceans (IBCAO) [Jakobsson et al., 
2003].";
    String title "Topography, SRTM30+ Version 6.0, 30 arc second, Global";
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request gridded data (for example, environmental data from satellites) and graphs of gridded data, via specially formed URLs.
The URLs specify everything: the dataset, the desired file type for the response, and the subset of data that you want to receive.
You can form these URLs by hand or with a computer program,
or (much easier) you can use the dataset's "Data Access Form" (oriented to requests for data)
or the dataset's "Make A Graph" form (oriented to requests for graphs and maps),
both of which generate the URL when the form is submitted.
griddap is a superset of the OPeNDAP DAP hyperslab protocol.

griddap request URLs must be in the form
   http://coastwatch.pfeg.noaa.gov/erddap/griddap/ datasetID fileType {?query}
For example,
   http://coastwatch.pfeg.noaa.gov/erddap/griddap/erdBAssta5day.htmlTable?sst[(2007-10-21T00:00:00)][0][(-75):100:(75)][(180):100:(360)]

For details, see the griddap Documentation.
 
ERDDAP Version 1.12

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