Satellite Gravity Measurements Confirm Accelerated Melting of Greenland Ice Sheet

Edited: 2011-02-21
TitleSatellite Gravity Measurements Confirm Accelerated Melting of Greenland Ice Sheet
Publication TypeJournal Article
Year of Publication2006
AuthorsChen, J., C. Wilson, and B. Tapley
JournalScience
Volume313
Pagination1958-1960
Date Published09/2006
Keywordsclimate, grace, ice
AbstractUsing 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.
URLhttp://adsabs.harvard.edu/abs/2006Sci...313.1958C
DOI10.1126/science.1129007