Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model Version 2 (GDEM V2)

The ASTER Project is a collaboration between Japanese and American researchers from a wide range of scientific fields. The ASTER itself is a "high efficiency optical sensor which covers a wide spectral region from the visible to the thermal infrared by 14 spectral bands." It was launched aboard a satellite in 1999 and is the only digital elevation model (DEM) that covers the entire surface of the earth at high resolution. Version 2 of the data was released in 2011 with full coverage of the earth (84 degrees north latitude and 84 degrees south latitude) with a resolution of 30 meters. More information.

Shuttle Radar Topographic Mission (SRTM)

SRTM was collected in February 2000 with a specially modified radar system that flew on board the Space Shuttle Endeavour. The near-global DEM (60 degrees North latitude and 54 degrees south latitude) has a resolution of 30 metres for the United States but 90 meters for the rest of the world. More Information.

Data Producer:

Ministry of Economy, Trade, and Industry (METI) of Japan, United States National Aeronautics and Space Administration (NASA)

Data Format:


30 metre, 90 metre
Authorized Users:
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