A Digital Elevation Model (DEM), ice thickness grid, and bedrock elevation grid of Greenland acquired as part of the PARCA program are available in ASCII text format at a 5 km grid spacing in a polar stereographic projection. DEM data are a combination of ERS-1 and Geosat satellite radar altimetry data, Airborne Topographic Mapper (ATM) data, and photogrammetric digital height data. Ice thickness data are based on approximately 700,000 data points collected in the 1990s from a University of Kansas airborne ice penetrating radar (IPR). Nearly 30,000 data points were collected in the 1970s from a Technical University of Denmark (TUD) airborne echo sounder. Bamber subtracted the ice thickness grid from the DEM to produce a grid of bedrock elevation values. Applications include studies of gravitational driving stress and ice volume (mass balance) of the Greenland Ice Sheet. Each of the three grids is approximately 1.5 MB. Data are available via 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.
Greenland 5 km DEM, Ice Thickness, and Bedrock Elevation Grids, Version 1
|Spatial Resolution:||Not Specified|
|Temporal Resolution:||Not specified|
|Platform(s)||AIRCRAFT, DEM, ERS-1, GEOSAT, MAPS, SATELLITES|
|Sensor(s):||ALTIMETERS, ATM, ECHO SOUNDERS, RA, RADAR ALTIMETERS, RADAR ECHO SOUNDERS|
|Data Contributor(s):||Jonathan Bamber|
|Metadata XML:||View Metadata Record|
As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.Bamber, J. 2001. Greenland 5 km DEM, Ice Thickness, and Bedrock Elevation Grids, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: http://dx.doi.org/10.5067/01A10Z9BM7KP. [Date Accessed].
Yes. Attached to this article are the following Greenland Surface DEM data files:
- A little-endian flat-binary file (bambgrl_dem_5km.img) and its associated ENVI header file (bambgrl_dem_5km.img.hdr).
- A GeoTIFF file (bambgrl_dem_5km.tif).
Directions for Importing Bamber Greenland DEM, Ice Thickness, and Bedrock Thickness into ArcGIS 9.2
1. Download the ASCII files for Bamber Greenland Ice Thickness (this same methodology applies for bedrock thickness and surface thickness (DEM)).
2. Open up the downloaded... read more
Directions for reading the Bamber Greenland DEM, Ice Thickness, and Bedrock Thickness in Fortran
Relevant data files include:
Bamber Greenland DEM, Ice Thickness, or Bedrock Elevation
Latitude and Longitude ASCII text files
1. Write each array (i.... read more