Dr. James Davis is a research professor at Columbia University's Lamot-Doherty Earth Observatory, where he specializes in positional and physical geodesy--Earth's shape, orientation and gravitational field. This research finds direct application in studies of ice sheets, glacial movement, climate and the atmosphere. Other applications include geophysics, natural hazards, hydrology and geothermal energy. Davis has been a member of the Gravity Recovery and Climate Experiment (GRACE) team since 2003.
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.