Research Interests climate science, glaciology, hydrology, remote sensing Research Abstract Employ novel geophysical methods and satellite remote sensing techniques to understand the physical processes governing ice sheet and high mountain glacier mass balance, and the hydrologic cycle of high latitude regions, with an emphasis on time-variable gravity from the Gravity Recovery and Climate Experiment (GRACE) missions and other geophysical data (satellite altimetry, GPS, climate model outputs, in situ observations). Study the impact of melting ice sheets and glaciers and ice caps on global and regional patterns of sea level rise using geophysical numerical methods. Study ecosystem response to climate change and variability in terrestrial water storage combining multiple remote sensing techniques and climate model outputs. AWARDS AND RECOGNITIONS 2018 Thomson Reuters Highly Cited Researchers in Geosciences (Researchers ranking among the top 1% most cited for their subject field). 2017 European Geosciences Union's Vening Meinesz Medal for distinguished research in Geodesy. The medal honor scientists who have achieved exceptional international standing in geodesy. 2016 Chancellor’s Fellow, University of California Irvine. 2016 Thomson Reuters Highly Cited Researchers in Geosciences (Researchers ranking among the top 1% most cited for their subject field. 2015 Thomson Reuters Highly Cited Researchers in Geosciences (Researchers ranking among the top 1% most cited for their subject field). 2015 Kavli Fellow of the U.S. National Academy of Science. 2015 UCI School of Physical Sciences award for Excellence in Undergraduate Education. 2013 NASA Group Achievement Award, Ice Mass Balance Intercomparison Exercise Team (IMBIE). 2008 Kavli Fellow of the U.S. National Academy of Science.