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The L-band PBMR measurements of surface soil moisture in FIFEThe NASA Langley Research Center's L-band pushbroom microwave radiometer (PBMR) aboard the NASA C-130 aircraft was used to map surface soil moisture at and around the Konza Prairie Natural Research Area in Kansas during the four intensive field campaigns of FIFE in May-October 1987. There was a total of 11 measurements was made when soils were known to be saturated. This measurement was used for the calibration of the vegetation effect on the microwave absorption. Based on this calibration, the data from other measurements on other days were inverted to generate the soil moisture maps. Good agreement was found when the estimated soil moisture values were compared to those independently measured on the ground at a number of widely separated locations. There was a slight bias between the estimated and measured values, the estimated soil moisture on the average being lower by about 1.8 percent. This small bias, however, was accounted for by the difference in time of the radiometric measurements and the soil moisture ground sampling.
Document ID
19910030217
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Wang, James R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Shiue, James C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schmugge, Thomas J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Engman, Edwin T.
(USDA, Beltsville Agricultural Research Center MD, United States)
Date Acquired
August 15, 2013
Publication Date
September 1, 1990
Publication Information
Publication: IEEE Transactions on Geoscience and Remote Sensing
Volume: 28
ISSN: 0196-2892
Subject Category
Earth Resources And Remote Sensing
Accession Number
91A14840
Distribution Limits
Public
Copyright
Other

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