https://sealevel.jpl.nasa.gov/missions/jason-cs-sentinel-6/
https://sealevel.jpl.nasa.gov/missions/jason-cs-sentinel-6/summary/
The NASA Sentinel-6 program is a mission aimed at measuring global sea level rise. This mission will deploy two identical satellites, Sentinel-6A and Sentinel-6B, into orbit to measure the height of the ocean surface. The data collected from these satellites will be used to monitor changes in sea level caused by climate change and will be crucial in providing insight into the effects of rising sea levels on coastlines and vulnerable populations around the globe. The Sentinel-6 program is a collaborative effort between NASA, the European Space Agency, and multiple international partners.