GRACE observes small-scale mass loss in Greenland

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چکیده

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GRACE observes small-scale mass loss in Greenland

[1] Using satellite gravity data between February 2003 and January 2008, we examine changes in Greenland’s mass distribution on a regional scale. During this period, Greenland lost mass at a mean rate of 179 ± 25 Gt/yr, equivalent to a global mean sea level change of 0.5 ± 0.1 mm/yr. Rates increase over time, suggesting an acceleration of the mass loss, driven by mass loss during summer. The la...

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Short term mass variability in Greenland, from GRACE

[1] We use twenty-two monthly GRACE (Gravity Recovery and Climate Experiment) gravity fields to recover nonsecular mass change in Greenland. The results show large seasonal variability. We compare with modeled precipitation, evaporation, and runoff derived from ERA40 (the 40-year ECMWF Re-Analysis of the global atmosphere). The model’s seasonal amplitude is controlled by runoff and agrees reaso...

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ژورنال

عنوان ژورنال: Geophysical Research Letters

سال: 2008

ISSN: 0094-8276

DOI: 10.1029/2008gl034816