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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 19, Iss. 2 — Jan. 15, 1980
  • pp: 250–255

Fast azimuthally dependent model of the reflection of solar radiation by plane-parallel clouds

R. Davies  »View Author Affiliations


Applied Optics, Vol. 19, Issue 2, pp. 250-255 (1980)
http://dx.doi.org/10.1364/AO.19.000250


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Abstract

A fast analytical model of the transfer of solar radiation in plane-parallel clouds is developed by extending the Eddington approximation to handle an azimuthally dependent radiance field. When compared with the more precise doubling method, the results from this approximate model show a typical accuracy of better than 3% for fluxes and 10% for intensities over a wide range of input parameters. This accuracy may deteriorate somewhat for small cloud thicknesses, large solar zenith angles, viewing angles close to the horizon, or viewing angles close to the solar azimuthal direction. The computational speed of the analytical model is, however, a few hundred times faster than that of the more precise models, which makes it well suited for applications involving iteration over spectral intervals, time intervals, or cloud populations.

© 1980 Optical Society of America

History
Original Manuscript: June 25, 1979
Published: January 15, 1980

Citation
R. Davies, "Fast azimuthally dependent model of the reflection of solar radiation by plane-parallel clouds," Appl. Opt. 19, 250-255 (1980)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-2-250

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