Josh Willis is the principal investigator for NASA's Oceans Melting Greenland (OMG) project, a five-year, multi-pronged investigation of the ocean's role in melting Greenland's ice sheet from the edges, driving global sea levels higher. OMG involves measuring the ice and oceans using aircraft, and the shape and depth of the sea floor from aircraft and ships as well. Willis also is the NASA project scientist for the Jason-3 satellite, launched in January 2016 to continue more than 20 years of sea-level monitoring from orbit. Willis also is a member of NASA's Sea Level Rise Team. He is based at NASA's Jet Propulsion Laboratory in Pasadena, California, where he began as a postdoctoral scholar in 2004 and joined the lab as a scientist in 2006. See updates on the OMG mission on Willis's Facebook page.
Scientists have combined NASA Earth satellite observations with data on human activities to map locations where freshwater is changing around the globe and to determine why.
Revised dates have been set for the prelaunch briefing and launch of GRACE-FO, NASA's latest Earth-observing satellite mission.
Operation IceBridge, NASA’s longest-running airborne mission to monitor polar ice change, concluded this year’s springtime survey of Arctic sea and land ice.
GRACE Follow-On's unique satellite view of underground water will be valuable in creating one of the most important U.S. tools for tracking drought throughout the nation.
Melting polar ice doesn't raise global sea level evenly, like filling a sink. GRACE-FO can help scientists understand differences in sea level rise on the world's coastlines.