ICESat-2’s purpose is to collect detailed measurements of the Earth’s surface using its Advanced Topographic Laser Altimeter System (ATLAS).
altimeter
GIS Data
Jason-2 Satellite to Help Improve Maps of Sea Floor
Jason-2 will be collecting data about the sea floor every 5 miles, which will be used to create a high-definition estimate of the average surface height of the ocean in various places around the globe.