Satellite-derived, melt-season surface temperature of the Greenland Ice Sheet (2000-2005) and its relationship to mass balance

Hall, D. K.; Williams, Jr. , R. S.; Casey, K. A.; DiGirolamo, N. E.; Wan, Z.

Abstract:

Mean, clear-sky surface temperature of the Greenland Ice Sheet was measured for each melt season from 2000 to 2005 using Moderate-Resolution Imaging Spectroradiometer (MODIS)-derived land-surface temperature (LST) data-product maps. During the period of most-active melt, the mean, clear-sky surface temperature of the ice sheet was highest in 2002 (-8.29 ?? 5.29??C) and 2005 (-8.29 ?? 5.43??C), compared to a 6-year mean of -9.04 ?? 5.59??C, in agreement with recent work by other investigators showing unusually extensive melt in 2002 and 2005. Surface-temperature variability shows a correspondence with the dry-snow facies of the ice sheet; a reduction in area of the dry-snow facies would indicate a more-negative mass balance. Surface-temperature variability generally increased during the study period and is most pronounced in the 2005 melt season; this is consistent with surface instability caused by air-temperature fluctuations. Copyright 2006 by the American Geophysical Union.

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Article

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70028080

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Hall, D. K.; Williams, Jr. , R. S.; Casey, K. A.; DiGirolamo, N. E.; Wan, Z.

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English

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Geophysical Research Letters

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Satellite-derived, melt-season surface temperature of the Greenland Ice Sheet (2000-2005) and its relationship to mass balance; 2006; Article; Journal; Geophysical Research Letters; Hall, D. K.; Williams, Jr. , R. S.; Casey, K. A.; DiGirolamo, N. E.; Wan, Z.