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Soil moisture verification study of the ESTAR microwave radiometer - Walnut Gulch, AZ 1991The application of an electronically steered thinned array L-band radiometer (ESTAR) for soil moisture mapping is investigated over the arid rangeland Walnut Gulch Watershed. Antecedent rainfall and evaporation for the flights are very different and result in a wide range of soil moisture conditions. The high spatial variability of rainfall events within this region results in moisture conditions with dramatic spatial patterns. Sensor performance is verified using two approaches. Microwave data are used in conjunction with a microwave emission model to predict soil moisture. These predictions are compared to ground observations of soil moisture. A second verification is possible using an extensive data set. Both tests showed that the ESTAR is capable of providing soil moisture with the same level of accuracy as existing systems.
Document ID
19930063681
Document Type
Conference Paper
Authors
Jackson, T. J. (USDA, Hydrology Lab. Beltsville, MD, United States)
Le Vine, D. M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Griffis, A. (Massachusetts Univ. Amherst, United States)
Goodrich, D. C. (USDA, Southwest Watershed Research Center Tucson, AZ, United States)
Schmugge, T. J. (USDA, Hydrology Lab. Beltsville, MD, United States)
Swift, C. T. (Massachusetts Univ. Amherst, United States)
O'Neill, P. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Roberts, R. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Parry, R. (USDA, Hydrology Lab. Beltsville, MD, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: IGARSS '92; Proceedings of the 12th Annual International Geoscience and Remote Sensing Symposium, Houston, TX, May 26-29, 1992. Vol. 1 (A93-47551 20-43)
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Distribution Limits
Public
Copyright
Other

Related Records

IDRelationTitle19930063554Analytic PrimaryIGARSS '92; Proceedings of the 12th Annual International Geoscience and Remote Sensing Symposium, Houston, TX, May 26-29, 1992. Vols. 1 & 2