GTOPO30

From GISWiki

GTOPO30 is a global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer). GTOPO30 was derived from several raster and vector sources of topographic information. For easier distribution, GTOPO30 has been divided into tiles which can be selected from the map shown above.

GTOPO30, completed in late 1996, was developed over a three year period through a collaborative effort led by staff at the U.S. Geological Survey's Center for Earth Resources Observation and Science (EROS). The following organizations participated by contributing funding or source data:

• the National Aeronautics and Space Administration (NASA),
• the United Nations Environment Programme/Global Resource Information Database (UNEP/GRID),
• the U.S. Agency for International Development (USAID),
• the Instituto Nacional de Estadistica Geografica e Informatica (INEGI) of Mexico,
• the Geographical Survey Institute (GSI) of Japan,
• Manaaki Whenua Landcare Research of New Zealand,
• and the Scientific Committee on Antarctic Research (SCAR).

The data are hosted by the USGS.

Weblinks

• http://edcdaac.usgs.gov/gtopo30/gtopo30.html
• http://www.kashmir3d.com/index-e.html