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LP DAAC Offers ASTER Digital Elevation Model (DEM) Products Using New Production Software

On May 24, 2006, the LP DAAC started offering ASTER Digital Elevation Model (DEM) products using new production software. The new ASTER DEM products are generated without using ground control points (GCPs), and they replace both the existing relative and absolute DEM products. As a result, the LP DAAC no longer offers an absolute DEM product. These 30-meter DEM products are delivered in GeoTif format and are disseminated via the FTP-Pull process only. The new DEM product offered by the DAAC meets or exceeds accuracy specifications set for the ASTER relative DEM product by the ASTER DEM Algorithm Theoretical Basis Document (ATBD). The DAAC's ASTER DEM generation throughput is expected to increase substantially with this new implementation.

For more information, click here: http://lpdaac.usgs.gov/aster/aster-dem_details.asp

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