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Determination of vegetated fraction of surface from satellite measurementsOne input to the ground hydrology component of general circulation models is the fraction of gridbox covered (i.e., shaded) by vegetation. The FV is needed in order to specify the partitioning of evaporation between vegetated and nonvegetated surfaces. Satellite data could provide global and seasonally varying specification of FV. In this work, FV is derived from Landsat data for a site in western Kenya; the accuracy of the estimate is evaluated and then compared to the accuracy requirements of a ground hydrology model. Results show that the accuracy of Landsat estimation of FV is + or - 5 percent and that transpiration, evaporation from bare soil and the seasonality of evapotranspiration are strongly dependent on FV.
Document ID
19880040580
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Cary, Ernestine
(Rutgers University New Brunswick, NJ, United States)
Rosenzweig, Cynthia
(NASA Goddard Institute for Space Studies New York, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Advances in Space Research
Volume: 7
Issue: 11, 1
ISSN: 0273-1177
Subject Category
Earth Resources And Remote Sensing
Accession Number
88A27807
Distribution Limits
Public
Copyright
Other

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