Time Series of Greenland Ice-Sheet Elevations and Mass Changes from ICESat 2003-2009

H Jay Zwally, University of Maryland College Park, Earth System Science Interdisciplinary Center, College Park, MD, United States, Jun Li, NASA Goddard Space Flight Center, SGT, Inc., NASA Goddard Space Flight Center, Greenbelt, MD, USA, Greenbelt, MD, United States, Brooke Medley, NASA Goddard Space Flight Center, Greenbelt, MD, United States, John W Robbins, NASA Goddard Space Flight Center, Code 615 - Cryospheric Lab, Greenbelt, MD, United States and Donghui Yi, Goddard Space Flight Center, NASA, Greenbelt, MD, United States