National Center for Earth Surface Dynamics 20160811 http://doi.org/10.5967/M09W0CGK This is the SRTM dataset. The Shuttle Radar Topography Mission (SRTM) obtained elevation data on a near-global scale to generate the most complete high-resolution digital topographic database of Earth. SRTM consisted of a specially modified radar system that flew onboard the Space Shuttle Endeavour during an 11-day mission in February of 2000. SRTM is an international project spearheaded by the National Geospatial-Intelligence Agency (NGA) and the National Aeronautics and Space Administration (NASA). --- Obtained on 5/30/2007 from: 30m US: ftp://e0srp01u.ecs.nasa.gov/srtm/version1/United_States_1arcsec/1arcsec/ 90m World: ftp://e0srp01u.ecs.nasa.gov/srtm/version2 Data related to Sustainability Science Research 20160811 20160811 ground condition Complete As needed -180.0 180.0 90.0 -90.0 None None None None None None Public Default 20160811 None None None None None None FGDC Standard for Digital Geospatial Metadata FGDC-STD-001-1998