Analysis of summer 2002 melt extent on the Greenland ice sheet using MODIS and SSM/I data
By: D.K. Hall, R.S. Williams Jr., K. Steffen, and Janet Y.L. Chien
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Abstract
Previous 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?? 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 ???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.
Suggested Citation
Hall, D., Williams, R., Steffen, K., and Chien, J.Y., 2004, Analysis of summer 2002 melt extent on the Greenland ice sheet using MODIS and SSM/I data, in International Geoscience and Remote Sensing Symposium (IGARSS), v. 5, Anchorage, AK, 20 September 2004 through 24 September 2004, p. 3029-3032.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Analysis of summer 2002 melt extent on the Greenland ice sheet using MODIS and SSM/I data |
| Volume | 5 |
| Year Published | 2004 |
| Language | English |
| Larger Work Title | International Geoscience and Remote Sensing Symposium (IGARSS) |
| First page | 3029 |
| Last page | 3032 |
| Conference Title | 2004 IEEE International Geoscience and Remote Sensing Symposium Proceedings: Science for Society: Exploring and Managing a Changing Planet. IGARSS 2004 |
| Conference Location | Anchorage, AK |
| Conference Date | 20 September 2004 through 24 September 2004 |