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Observed effects of soil organic matter content on the microwave emissivity of soilsIn order to determine the significance of organic matter content on the microwave emissivity of soils when estimating soil moisture, field experiments were conducted in which 1.4 GHz microwave emissivity data were collected over test plots of sandy loam soil with different organic matter levels (1.8, 4.0, and 6.1 percent) for a range of soil moisture values. Analyses of the observed data show only minor variation in microwave emissivity due to a change in organic matter content at a given moisture level for soils with similar texture and structure. Predictions of microwave emissivity made using a dielectric model for aggregated soils exhibit the same trends and type of response as the measured data when appropriate values for the input parameters were utilized.
Document ID
19900058722
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
O'Neill, P. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Jackson, T. J.
(USDA, Hydrology Laboratory, Beltsville MD, United States)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: Remote Sensing of Environment
Volume: 31
ISSN: 0034-4257
Subject Category
Earth Resources And Remote Sensing
Accession Number
90A45777
Distribution Limits
Public
Copyright
Other

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