Evaporation from nonvegetated surfaces: Surface aridity methods and passive microwave remote sensing

The use of remotely sensed near-surface soil moisture for the estimation of evaporation is investigated. Two widely used parameterizations of evaporation, the so-called alpha and beta methods, which use near-surface soil moisture to reduce some measure of potential evaporation, are studied. The near-surface soil moisture is provided by a set of L- and S-band microwave radiometers, which were mounted 13 m above the surface. It is shown that soil moisture measured with a passive microwave sensor in combination with the beta method yields reliable estimates of evaporation, whereas the a method is not as robust.


Published in:
J. of Applied Meteorology, 38, 9, 1346-1351
Year:
1999
Keywords:
Note:
38(9): 1346-1351
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 Record created 2005-09-08, last modified 2018-03-17

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