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GEOPHYSICAL RESEARCH LETTERS,
VOL. 34,
L22501,
6 PP., 2007
doi:10.1029/2007GL031871
Patagonia Icefield melting observed by Gravity Recovery and Climate Experiment (GRACE)
Center for Space Research, University of Texas at Austin, Austin, Texas, USA
Center for Space Research, University of Texas at Austin, Austin, Texas, USA
Department of Geological Sciences, University of Texas at Austin, Austin, Texas, USA
Center for Space Research, University of Texas at Austin, Austin, Texas, USA
Institute for Geophysics, University of Texas at Austin, Austin, Texas, USA
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
Using recently released reprocessed gravity solutions from the Gravity Recovery and Climate Experiment (GRACE), we estimate the ice loss rate for the Patagonia Icefield (PIF) of South America, for the period April 2002 through December 2006. After postglacial rebound and hydrological effects are corrected, the estimated rate is −27.9 ± 11 km3/year, equivalent to an average loss of ∼−1.6 m/year ice thickness change if evenly distributed over the entire PIF area. The estimated contribution to global sea level rise is 0.078 ± 0.031 mm/year. This is an independent confirmation of relatively large melting rate estimates from earlier studies employing topographic and cartographic data.
Received 30 August 2007; accepted 22 October 2007; published 17 November 2007.
Citation: (2007), Patagonia Icefield melting observed by Gravity Recovery and Climate Experiment (GRACE), Geophys. Res. Lett., 34, L22501, doi:10.1029/2007GL031871.
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