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.
To better predict changes in Antarctica's Thwaites Glacier, sea-level scientists turn their focus to the bedrock beneath.
The Surface Water and Ocean Topography mission will explore how the ocean absorbs atmospheric heat and carbon, moderating global temperatures and climate change.
In a question and answer session, ice sheet researcher Sophie Nowicki, a member of the NASA Sea Level Change Team, discusses a new era in sea-level research.
Sentinel-6 Michael Freilich, the newest addition to a long line of ocean-monitoring satellites, becomes the reference satellite for sea level measurements.
NASA, NOAA, USGS, and other U.S. government agencies project that the rise in ocean height in the next 30 years could equal the total rise seen over the past 100 years.