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Relation between L-band soil emittance and soil water contentAn experimental relation between soil emittance (E) at L-band and soil surface moisture content (M) is compared with a theoretical one. The latter depends on the soil dielectric constant, which is a function of both soil moisture content and of soil texture. It appears that a difference of 10 percent in the surface clay content causes a change in the estimate of M on the order of 0.02 cu m/cu m. This is based on calculations with a model that simulates the flow of water and energy, in combination with a radiative transfer model. It is concluded that an experimental determination of the E-M relation for each soil type is not required, and that a rough estimate of the soil texture will lead to a sufficiently accurate estimate of soil moisture from a general, theoretical relationship obtained by numerical simulation.
Document ID
19860051305
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Stroosnijder, L.
(Landbouwhogeschool Wageningen, Netherlands)
Lascano, R. J.
(Texas A & M University Lubbock, United States)
Van Bavel, C. H. M.
(Wageningen Agricultural Univ. Netherlands)
Newton, R. W.
(Texas A & M University College Station, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1986
Publication Information
Publication: Remote Sensing of Environment
Volume: 19
ISSN: 0034-4257
Subject Category
Earth Resources And Remote Sensing
Accession Number
86A36043
Funding Number(s)
CONTRACT_GRANT: NAG5-31
Distribution Limits
Public
Copyright
Other

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