Accession Number : AD0757494

Title :   Monte Carlo Studies of Light Transport through Natural Atmospheres.

Descriptive Note : Final rept. 1 Feb 70-31 Dec 72,

Corporate Author : RADIATION RESEARCH ASSOCIATES INC FORT WORTH TEX

Personal Author(s) : Blattner,Wolfram ; Wells,Michael B.

Report Date : 31 JAN 1973

Pagination or Media Count : 105

Abstract : The report describes work performed on six major work areas: Modification to the FLASH procedure and its application to solar almucantar, horizon brightness, and twilight scattering studies; Development of the BRITE procedure for treating light scattering in a plane parallel atmosphere with the backward Monte Carlo method. Application of the FLARE procedure to evaluate the effect of multiple scattering on the angular intensity reaching a receiver from a point isotropic source; Modifications of the LITE-IV procedure for use in path radiance and path reflectance calculations; Applications of the TPART-I procedure to studies of radiation transport in foggy atmospheres for use in determining the effects of scattering on visibility measurements made with optical transmission instruments; and, Modifications to the MIE2 procedure and development of the MIE3, MIE4, and MIE5 procedures for calculating scattering cross sections and phase function data for homogeneous spherical particles and for particles having a spherical shell of different materials, and the application of these programs to calculations of scattering data for visible and infrared light. (Author Modified Abstracts)

Descriptors :   (*ATMOSPHERES, *LIGHT TRANSMISSION), SCATTERING, MONTE CARLO METHOD, FOG, VISIBILITY, AEROSOLS, DUST, REFRACTIVE INDEX, TWILIGHT

Subject Categories : Atmospheric Physics
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE