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Proceedings Paper

Determination of the surface evaporative fraction from combined AVHRR-SSM/I remote sensing
Author(s): Koen De Ridder; Clemens Mensink
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Paper Abstract

A model is described to compute the surface evaporative fraction from remotely sensed data. The scheme is based on the fact that much of the variability of the evaporative fraction is determined by the fractional cover of green vegetation, the remaining variability being caused by variations in soil wetness. Vegetation transpiration is obtained from an AVHRR vegetation index whereas soil wetness is obtained from the SSM/I microwave polarization difference temperature. Comparison of remotely sensed evaporative fraction with ground-based data from FIFE yield an average absolute error of 0.036 which is within experimental error. It is also shown that the remotely sensed evaporative fraction is largely independent of soil textural composition.

Paper Details

Date Published: 11 December 1998
PDF: 9 pages
Proc. SPIE 3499, Remote Sensing for Agriculture, Ecosystems, and Hydrology, (11 December 1998); doi: 10.1117/12.332737
Show Author Affiliations
Koen De Ridder, Flemish Institute for Technological Research (Belgium)
Clemens Mensink, Flemish Institute for Technological Research (Belgium)


Published in SPIE Proceedings Vol. 3499:
Remote Sensing for Agriculture, Ecosystems, and Hydrology
Edwin T. Engman, Editor(s)

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