Scientists weighs changes of the Greenland ice sheet

The Cryosphere

ICESat has provided surface elevation measurements of the ice sheets since the launch in January 2003, resulting in a unique dataset for monitoring the changes of the cryosphere. The scientists present a novel method for determining the mass balance of the Greenland ice sheet, derived from ICESat altimetry data and find annual mass loss estimates of the Greenland ice sheet in the range of 191 ± 23 Gt yr−1 to 240 ± 28 Gt yr−1 for the period October 2003 to March 2008. These results are in good agreement with several other studies of the Greenland ice sheet mass balance, based on different remote-sensing techniques. Continue

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