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SPATIAL TEMPORAL DISTRIBUTION OF GREENLAND MELT ANOMALIES
HUFF, RUSSELL D University of Colorado.
Steffen, Konrad University of Colorado.
Twenty five years of passive microwave observations from satellite allows melt on the Greenland ice sheet to be analyzed statistically. From a temporal standpoint, the peak variance in melt extent is now several weeks before peak melt as a result of statistically significant, increasing trends in daily melt of 5-8% per year since 1978. A method for identifying spatial and temporal melt anomalies is presented and applied to the 2002 and 2003 melt seasons. The results indicate that 2002 melted in a way that is unprecedented in the satellite record due to record melt extent and highly unlikely melt in the northeast. The 2003 melt season was also very irregular with extreme melt late in the season that resulted in 1.5 m of ice removed at the equilibrium line altitude on the west side of the ice sheet.
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