Satellite Gravity Measurements Confirm Accelerated Melting of Greenland Ice Sheet

Author
Keywords
Abstract
Using time-variable gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) satellite mission, we estimate ice mass changes over Greenland during the period April 2002 to November 2005. After correcting for the effects of spatial filtering and limited resolution of GRACE data, the estimated total ice melting rate over Greenland is -239 +/- 23 cubic kilometers per year, mostly from East Greenland. This estimate agrees remarkably well with a recent assessment of -224 +/- 41 cubic kilometers per year, based on satellite radar interferometry data. GRACE estimates in southeast Greenland suggest accelerated melting since the summer of 2004, consistent with the latest remote sensing measurements.
Year of Publication
2006
Journal
Science
Volume
313
Number of Pages
1958-1960
Date Published
09/2006
URL
http://adsabs.harvard.edu/abs/2006Sci...313.1958C
DOI
10.1126/science.1129007