Accession Number : AD0661268

Title :   RADIANCE AND POLARIZATION OF MULTIPLE SCATTERED LIGHT FROM HAZE AND CLOUDS,

Corporate Author : SOUTHWEST CENTER FOR ADVANCED STUDIES DALLAS TEX

Personal Author(s) : Kattawar,George W. ; Plass,Gilbert N.

Report Date : 20 SEP 1967

Pagination or Media Count : 48

Abstract : The radiance and polarization of multiple scattered light is calculated from the Stoke's vectors by a Monte Carlo method. The exact scattering matrix for a typical haze and for a cloud whose spherical drops have an average radius of 12 microns is calculated from the Mie theory. The Stoke's vector is transformed in a collision by this scattering matrix and the rotation matrix. The two angles which define the photon direction after scattering are chosen by a random process which correctly stimulates the actual distribution functions for both angles. The Monte Carlo results for Rayleigh scattering compare favorably with well known tabulated results. Curves are given of the reflected and transmitted radiances and polarizations for both the haze and cloud models and for several solar angles, optical thicknesses, and surface albedos. The dependence on these various parameters is discussed. (Author)

Descriptors :   (*CLOUDS, *LIGHT TRANSMISSION), (*HAZE, LIGHT TRANSMISSION), POLARIZATION, SCATTERING, MONTE CARLO METHOD, REFLECTIVITY, INTENSITY, ALBEDO(ASTRONOMY), OPTICAL PROPERTIES, WATER VAPOR

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE