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Large area mapping of soil moisture using the ESTAR passive microwave radiometerInvestigations designed to study land surface hydrologic-atmospheric interactions, showing the potential of L band passive microwave radiometry for measuring surface soil moisture over large areas, are discussed. Satisfying the data needs of these investigations requires the ability to map large areas rapidly. With aircraft systems this means a need for more beam positions over a wider swath on each flightline. For satellite systems the essential problem is resolution. Both of these needs are currently being addressed through the development and verification of Electronically Scanned Thinned Array Radiometer (ESTAR) technology. The ESTAR L band radiometer was evaluated for soil moisture mapping applications in two studies. The first was conducted over the semiarid rangeland Walnut Gulch watershed located in south eastern Arizona (U.S.). The second was performed in the subhumid Little Washita watershed in south west Oklahoma (U.S.). Both tests showed that the ESTAR is capable of providing soil moisture with the same level of accuracy as existing systems.
Document ID
19950010624
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jackson, T. J.
(Agricultural Research Service Beltsville, MD., United States)
Levine, D. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Swift, C. T.
(Massachusetts Univ. Amherst, MA., United States)
Schmugge, T. J.
(Agricultural Research Service Beltsville, MD., United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1994
Publication Information
Publication: CNES, Proceedings of 6th International Symposium on Physical Measurements and Signatures in Remote Sensing
Subject Category
Earth Resources And Remote Sensing
Accession Number
95N17039
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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