Jan 8, 2026nasa's data for digital elevation models (dem) comes from airborne and space-based sources and are useful for analyzing a majority of earth's terrain. Measures 2012 project focused on providing the scientific and civil communities with a state-of-the-art global dem from srtm processing improvements. Dec 7, 2021high-resolution digital elevation models (dem) for non-polar regions at two-meter spatial resolution are now available through nasa’s commercial smallsat data acquisition (csda) program.
