GTOPO30 is a global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer). The DEM was derived from several raster and vector sources of topographic information. Completed in late 1996, GTOPO30 was developed over a three-year period through a collaborative effort led by 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).
|Name||Description||Gee Unit||GSD (m)|
|United States Geological Survey (producer, licensor)|
|Google Earth Engine (host)|
|Keywords||dem, elevation, geophysical, gtopo30, nasa, topography, usgs|
|Temporal Extent||12/31/1995, 4:00:00 PM - 12/31/1995, 4:00:00 PM|
|Citation||GTOPO30 DEM courtesy of the U.S. Geological Survey|