Laboratory for Satellite Altimetry / Sea Level Rise
GRACE and ocean mass web sites
The Gravity Recovery and Climate Experiment (GRACE) mission uses a pair of satellites launched in March 2002 to make detailed measurements of Earth's gravity field. These observations include gravity variations due to changes in the surface and deep currents in the ocean. GRACE is jointly implemented by NASA and the Deutschen Zentrum für Luft-und Raumfahrt (DLR).