Global Digital Elevation Model

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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.


Ministry of Economy, Trade, and Industry (METI) of Japan

United States National Aeronautics and Space Administration (NASA)

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Content last reviewed: August 28, 2018