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Consistency of Earth Radiation Budget Experiment bidirectional models and the observed anisotropy of reflected sunlightThe anisotropy of the radiance field estimated from bidirectional models derived from Nimbus 7 ERB scanner data is compared with the anisotropy observed with the ERB Experiment (ERBE) scanner aboard the ERB satellite. The results of averaging over groups of 40 ERBE scanner scan lines for a period of a month revealed significant differences between the modeled and the observed anisotropy for given scene types and the sun-earth-satellite viewing geometries. By comparing the radiative fluxes derived using the observed anisotropy with those derived assuming isotropic reflection, it is concluded that a reasonable estimate for the maximum error due to the use of incorrect bidirectional models is a bias of about 4 percent for a typical 2.5 deg latitude-longitude monthly mean, and an rms error of 15 percent.
Document ID
19910047168
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Baldwin, Daniel G.
(Colorado, University Boulder, United States)
Coakley, James A., Jr.
(Oregon State University Corvallis, United States)
Date Acquired
August 14, 2013
Publication Date
March 20, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
Meteorology And Climatology
Accession Number
91A31791
Funding Number(s)
CONTRACT_GRANT: NASA ORDER L-12420-C
Distribution Limits
Public
Copyright
Other

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