Accession Number : AD0667214

Title :   INFRARED ABSORPTION PROGRAM.

Descriptive Note : Final rept. 1 Jan 65-31 Jan 68,

Corporate Author : SOUTHWEST CENTER FOR ADVANCED STUDIES DALLAS TEX

Personal Author(s) : Plass,Gilbert N.

Report Date : 28 FEB 1968

Pagination or Media Count : 15

Abstract : A number of aspects of the interaction of radiation with planetary atmospheres were studied. The variations to be expected in the transmission of radiation from thermal sources (continuous in wavelength), from flames (molecular bands), and from laser sources (essentially monochromatic) are derived. The scattering and absorption of Mie particles are studied because of the importance of aerosols in our atmosphere. Multiple scattering of light is important in any realistic model of the earth's atmosphere. A sophisticated Monte Carlo method was developed to follow the path of a photon as it is scattered or absorbed by collision with atmospheric molecules, aerosols, and water droplets. Results were derived from the Monte Carlo calculations for many different conditions. The radiant intensity, flux, and polarization are calculated at arbitrary levels in the atmosphere. (Author)

Descriptors :   (*PLANETARY ATMOSPHERES, INFRARED PHENOMENA), (*INFRARED RADIATION, ABSORPTION), WAVE PROPAGATION, THERMAL RADIATION, CONTINUOUS SPECTRA, FLAMES, BAND SPECTRA, LASERS, MONOCHROMATIC LIGHT, SCATTERING, AEROSOLS, PHOTONS, INTERACTIONS, MONTE CARLO METHOD, INTENSITY, POLARIZATION

Subject Categories : Astrophysics
      Atmospheric Physics
      Infrared Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE