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GTOPO30 global digital elevation model

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The GTOPO30 global digital elevation model is made by the U.S. Geological Survey's EROS Data Center in Sioux Falls, South Dakota. Elevations in GTOPO30 are regularly spaced at 30-arc seconds (1/120-th of a degree), which is approximately 1 kilometer at the equator.

To ease the downloading/distribution, the world map is divided in 33 tiles, shown in the image below. The original data can be downloaded from the GTOPO30 home page

Since working with these 33 rather large data files is not always convenient, the TEMIS team has decided to convert the GTOPO30 data to more practical data files at the desired resolution:

GTOPO30 tiles

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