An interpretation of methodologies for indirect measurement of soil water content

An interpretation of methodologies for indirect measurement of soil water content Using a new technique referred to as the triangle method, surface soil water content and fractional vegetation cover were derived from surface radiant temperature measurements and normalized difference vegetation index (NDVI). Application of the technique is made with reference to NS001 multispectral scanner measurements made by a C-130 aircraft over the Mahantango Watershed in Pennsylvania. The derived surface soil water content values were compared with those obtained from the Push Broom Microwave Radiometer (PBMR) aboard the same aircraft and with in-situ ground measurements. A large disparity was found to exist between all three measurements, suggesting that the surface becomes decoupled from the deeper substrate in regions of rapid drying, where large vertical gradients in soil water content may exist near the surface. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Agricultural and Forest Meteorology Elsevier

An interpretation of methodologies for indirect measurement of soil water content

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Publisher
Elsevier
Copyright
Copyright © 1995 Elsevier Ltd
ISSN
0168-1923
DOI
10.1016/0168-1923(95)02261-U
Publisher site
See Article on Publisher Site

Abstract

Using a new technique referred to as the triangle method, surface soil water content and fractional vegetation cover were derived from surface radiant temperature measurements and normalized difference vegetation index (NDVI). Application of the technique is made with reference to NS001 multispectral scanner measurements made by a C-130 aircraft over the Mahantango Watershed in Pennsylvania. The derived surface soil water content values were compared with those obtained from the Push Broom Microwave Radiometer (PBMR) aboard the same aircraft and with in-situ ground measurements. A large disparity was found to exist between all three measurements, suggesting that the surface becomes decoupled from the deeper substrate in regions of rapid drying, where large vertical gradients in soil water content may exist near the surface.

Journal

Agricultural and Forest MeteorologyElsevier

Published: Dec 1, 1995

References

  • An overview of the workshop on thermal remote sensing held at La Londe les Maures
    Carlson, T.N.; Taconet, O.; Vidal, A.; Gillies, R.R.; Olioso, A.; Humes, K.
  • Comparison of active microwave soil water content with infrared surface temperatures and surface moisture availability
    Perry, E.M.; Carlson, T.N.

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