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A Climate-Data Record (CDR) of the "Clear-Sky" Surface Temperature of the Greenland Ice SheetWe have developed a climate-data record (CDR) of "clear-sky" ice-surface temperature (IST) of the Greenland Ice Sheet using Moderate-Resolution Imaging Spectroradiometer (MODIS) data. The CDR provides daily and monthly-mean IST from March 2000 through December 2010 on a polar stereographic projection at a resolution of 6.25 km. The CDR is amenable to extension into the future using Visible/Infrared Imager Radiometer Suite (VIIRS) data. Regional "clear-sky" surface temperature increases since the early 1980s in the Arctic, measured using Advanced Very High Resolution Radiometer (AVHRR) infrared data, range from 0.57 +/- 0.02 to 0.72 +/- 0.1 c per decade. Arctic warming has important implications for ice-sheet mass balance because much of the periphery of the Greenland Ice Sheet is already near O C during the melt season, and is thus vulnerable to rapid melting if temperatures continue to increase. An increase in melting of the ice sheet would accelerate sea-level rise, an issue affecting potentially billions of people worldwide. The IST CDR will provide a convenient data set for modelers and for climatologists to track changes of the surface temperature of the ice sheet as a whole and of the individual drainage basins on the ice sheet. The daily and monthly maps will provide information on surface melt as well as "clear-sky" temperature. The CDR will be further validated by comparing results with automatic-weather station data and with satellite-derived surface-temperature products.
Document ID
20110008415
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Hall, Dorothy K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Comiso, Josefino C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
DiGirolamo, Nocolo E. (Science Systems and Applications, Inc. Lanham, MD, United States)
Shuman, Christopher A. (Maryland Univ. Baltimore County Baltimore, MD, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2011
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Eastern Snow Conference (ESC)
Location: Montreal
Country: Canada
Start Date: June 14, 2011
End Date: June 16, 2011
Distribution Limits
Public
Copyright
Public Use Permitted.

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