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.
The Sentinel-6/Jason-CS satellite mission will add to a long-term sea level dataset that's become the gold standard for climate studies from orbit.
A team of engineers in the U.S. and Europe subjected the Sentinel-6 Michael Freilich spacecraft to a battery of trials to ready it for liftoff later this year.
Satellite data on the movement of water on Earth helps to improve the accuracy of moisture maps and forecasts.
The shape of the ground beneath Denman Glacier, which is melting from the bottom up, makes it particularly vulnerable to seawater intrusion.
Greenland and Antarctica are melting—but how quickly and which areas are most affected? Nearly 20 years of satellite data provide key insights into these questions.