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Estimation of soil-type heterogeneity effects in the retrieval of soil moisture from radiobrightness

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3 Author(s)
Galantowicz, J.F. ; Ralph M. Parsons Lab., MIT, Cambridge, MA, USA ; Entekhabi, D. ; Njoku, E.G.

The authors estimate the magnitude of the beam-filling error due to soil-type heterogeneity in the determination of sensor-footprint average soil moisture (θ¯f) retrieved from remote L-band radiometer measurements. Sets of randomly chosen soils are given uniform initial wetness and are subjected to atmospheric drying over 15 days in a numerical model. Results indicate that soil heterogeneity contributes less than 0.7% volumetric soil-moisture error (0.007 mwater3/msoil3)

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:38 ,  Issue: 1 )