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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 7, Iss. 5 — May. 1, 1968
  • pp: 869–878

Influence of Particle Size Distribution on Reflected and Transmitted Light from Clouds

George W. Kattawar and Gilbert N. Plass  »View Author Affiliations


Applied Optics, Vol. 7, Issue 5, pp. 869-878 (1968)
http://dx.doi.org/10.1364/AO.7.000869


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Abstract

The light reflected and transmitted from clouds with various drop size distributions is calculated by a Monte Carlo technique. Six different models are used for the drop size distribution: isotropic, Rayleigh, haze continental, haze maritime, cumulus, and nimbostratus. The scattering function for each model is calculated from the Mie theory. In general, the reflected and transmitted radiances for the isotropic and Rayleigh models tend to be similar, as are those for the various haze and cloud models. The reflected radiance is less for the haze and cloud models than for the isotropic and Rayleigh models, except for an angle of incidence near the horizon when it is larger around the incident beam direction. The transmitted radiance is always much larger for the haze and cloud models near the incident direction; at distant angles it is less for small and moderate optical thicknesses and greater for large optical thicknesses (all comparisons to isotropic and Rayleigh models). The downward flux, cloud albedo, and mean optical path are discussed. The angular spread of the beam as a function of optical thickness is shown for the nimbostratus model.

© 1968 Optical Society of America

History
Original Manuscript: September 11, 1967
Published: May 1, 1968

Citation
George W. Kattawar and Gilbert N. Plass, "Influence of Particle Size Distribution on Reflected and Transmitted Light from Clouds," Appl. Opt. 7, 869-878 (1968)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-7-5-869


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References

  1. G. N. Plass, G. W. Kattawar, Appl. Opt. 7, 415 (1968). [CrossRef] [PubMed]
  2. S. Fritz, J. Meteorol. 11, 291 (1954). [CrossRef]
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