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Modulation of SSM/I microwave soil radiances by rainfallThe feasibility of using SSM/I satellite data for estimating the soil moisture content was investigated by correlating the rainfall and soil moisture data with values of the SSM/I microwave brightness temperature obtained for the lower Great Plains in the United States during 1987. It was found that the areas of lowest brightness temperatures coincided with regions of bare soil which had received significant rainfall. The time-history plots of the brightness temperature and the antecedent precipitation index during an extremely large rain event indicated a slow recovery period (about 15 days) back to the dry soil state. However, regions covered with vegetation showed smaller temperature drops and much weaker correlation with rain events, questioning the feasibility of using SSM/I measurements for estimations of soil moisture in regions containing vegetation-covered soil.
Document ID
19920048505
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1016/0034-4257(92)90085-X
Authors
Heymsfield, Gerald M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Fulton, Richard (Science Systems and Applications, Inc. Lanham, MD, United States)
Date Acquired
August 15, 2013
Publication Date
March 1, 1992
Publication Information
Publication: Remote Sensing of Environment
Volume: 39
ISSN: 0034-4257
Subject Category
Earth Resources And Remote Sensing
Accession Number
92A31129
Funding Number(s)
PROJECT: RTOP 460-24-52
Distribution Limits
Public
Copyright
Other

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