NASA has released the most complete terrain map

NASA, in collaboration with the Japanese Ministry of Economy has issued in recent days the most complete map of the Earth's surface. The map covers 99% of the earth's surface.

The Global Digital Elevation Model (GDEM) has been created using images collected from the 1.3 million Japanese radiometer ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) located on board the Terra spacecraft . In the map the areas at low altitude are shown in purple, medium-altitude areas are represented in green and yellow areas at high altitude are represented in orange, red and white.
The map in TIFF format can be downloaded from this address.
Before the construction of this map was the most complete map obtained from the NASA Shuttle Radar Topography Mission, which covered 80% of the earth's surface.

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