Most Complete Worldwide Elevation Dataset Ready for Download
The Global Digital Elevation Map was developed from data collected by the Japanese Aster sensor aboard the NASA satellite Terra. Data points are 30M apart and the dataset covers 99% of the earth. For comparison, the Radar Shuttle Topography Mission covered but 80%.
Downloads/Links:
26-megabyte TIF (it will begin drawing on your screen if you click!)
Aster GDEM Page
Search and download (there are warnings heavy demand may mean some restrictions)
- NASA announcement (pdf)
- BBC
- Wired
