INFRARED ABSORPTION PROGRAM.

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)

Document Details

Document Type
Technical Report
Publication Date
Feb 28, 1968
Accession Number
AD0667214

Entities

People

  • Gilbert N. Plass

Tags

DTIC Thesaurus Topics

  • Absorption
  • Atmospheres
  • Collisions
  • Intensity
  • Molecules
  • Monte Carlo Method
  • Particles
  • Planetary Atmospheres
  • Polarization
  • Radiant Intensity
  • Radiation
  • Scattering

Fields of Study

  • Physics

Readers

  • Atmospheric Remote Sensing.
  • Combustion science or combustion engineering.
  • Computational Fluid Dynamics (CFD)

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers