Get Data

OGC Web Services: Access these data using the Open Geospatial Consortium (OGC) Services.
Search Database: Get data using a database search interface.
Data Set ID:

Antarctic 5-km Digital Elevation Model from ERS-1 Altimetry, Version 1

This data set provides a digital elevation model (DEM) for Antarctica to 81.5 degrees south latitude, at a resolution of 5 km. Approximately twenty million data points were used to generate this data set. Data points were derived from ERS-1 radar altimetry during the geodetic phase from March 1994 to May 1995. The improved density in coverage and resolution, compared with past satellite altimetry missions, provides better detection of topographic detail such as surface undulations, ice streams, grounding zones, and interstream ridges. DEM data are in a polar stereographic projection with the origin at the south pole, and are referenced to the OSU91A geoid.

The ERS-1 satellite radar altimeter measurements are highly useful for determining precise ice sheet elevations in Antarctica. The orthometric heights derived from the ERS-1 data contribute to a more accurate and complete mapping of the Antarctic Ice Sheets than previously possible, and therefore to ongoing studies of ice mass balance studies in Antarctica.

The DEM is provided as a single ASCII text file, accessible by ftp. Data access is unrestricted, but we recommend that users register with us. Registered users automatically receive e-mail notification of product updates and changes to processing.

Geographic Coverage

Data Set Tabs

Spatial Coverage:
  • N: -65, S: -81, E: 180, W: -180

Spatial Resolution:
Not Specified
Temporal Coverage
  • 1 March 1994 to 31 May 1995
Temporal Resolution:
1 day
  • Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
  • Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
  • Glaciers/Ice Sheets > Ice Sheets
  • Topography > Surface Roughness
  • Topography > Topographical Relief
Data Format(s):
Not specified
Data Contributor(s): Jonathan Bamber, R. Layberry, S. Gogenini

Data Citation

As a condition of using this data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Jonathan Bamber 2000. Antarctic 5-km Digital Elevation Model from ERS-1 Altimetry, Version 1. [indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. [Date Accessed].

Questions? Please contact:

NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA