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Federal
Global Topographic 30 Arc-Second Digital Elevation Model: Released 1996
Department of the Interior —
'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... -
Federal
ASAS = NASA's Advanced Solid-state Array Spectroradiometer: 1988 - 2000
Department of the Interior —
'The Advanced Solid-State Array Spectroradiometer (ASAS) data collection contains data collected by the ASAS sensor flown aboard NASA aircraft. A fundamental use of... -
Federal
Heat Capacity Mapping Mission Digital Source: 1978-1980
Department of the Interior —
'NASA\'s Heat Capacity Mapping Mission (HCMM) project collected Earth data in the visible and thermal bands between April 1978 and September 1980. This was an...