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Analysis of Summer 2002 Melt Extent on the Greenland Ice Sheet using MODIS and SSM/I DataPrevious work has shown that the summer of 2002 had the greatest area of snow melt extent on the Greenland ice sheet ever recorded using passive-microwave data. In this paper, we compare the 0 deg. isotherm derived from the Moderate-Resolution Imaging Spectroradiometer (MODIS) instrument, with Special Sensor Microwave/Imager (SSM/I)-derived melt, at the time of the maximum melt extent in 2002. To validate the MODIS derived land-surface temperatures (LSTs), we compared the MODIS LSTs with air temperatures from nine stations (using 11 different data points) and found that they agreed to within 2.3 +/- 2.09 C, with station temperatures consistently lower than the MODIS LSTs. According to the MODIS LST, the maximum surface melt extended to approx. 2300 m in southern Greenland; while the SSM/I measurements showed that the maximum melt extended to nearly 2700 m in southeastern Greenland. The MODIS and SSM/I data are complementary in providing detailed information about the progression of surface and near- surface melt on the Greenland ice sheet.
Document ID
20040171217
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Hall, Dorothy K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Williams, Richard S. (Geological Survey Woods Hole, MA, United States)
Steffen, Konrad (Colorado Univ. Boulder, CO, United States)
Chien, Janet Y. L. (Science Applications International Corp. Beltsville, MD, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2004
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: IEEE International Geoscience and Remote Sensing Symposium 2004
Location: Anchorage, AK
Country: United States
Start Date: September 20, 2004
End Date: September 24, 2004
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Public Use Permitted.

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