PASADENA, Calif. – NASA and Japan released a significantly improved version of the most complete digital topographic map of Earth on Monday, produced with detailed measurements from NASA’s Terra spacecraft.
“The ASTER global digital elevation model was already the most complete, consistent global topographic map in the world,” said Woody Turner, ASTER program scientist at NASA Headquarters in Washington. “With these enhancements, its resolution is in many respects comparable to the U.S. data from NASA’s Shuttle Radar Topography Mission, while covering more of the globe.”
The ASTER data cover 99 percent of Earth’s landmass and span from 83 degrees north latitude to 83 degrees south. Each elevation measurement point in the data is 98 feet (30 meters) apart.
Users of the new version of the ASTER data products are advised that while improved, the data still contain anomalies and artifacts that will affect its usefulness for certain applications.
Data users can download the ASTER global digital elevation model at: https://lpdaac.usgs.gov/ or http://www.ersdac.or.jp/GDEM/E/4.html .
For more information about ASTER, visit: http://asterweb.jpl.nasa.gov/ . For more information on NASA’s Terra mission, visit: http://www.nasa.gov/terra .
JPL is managed for NASA by the California Institute of Technology in Pasadena.
NASA, Japan Release Improved Topographic Map of Earth
From NASA Web Site October 17th 2011:
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