Models for the Aerosols of the Lower Atmosphere and the Effects of Humidity Variations on their Optical Properties

Abstract

Aerosol models have been developed for the lower atmosphere. These models are representative of conditions found in rural, urban, and maritime air masses. The changes in the aerosol properties with variations in the relative humidity are discussed. To describe the aerosol optical properties in the extreme of 100 percent relative humidity, several fog models are presented. For each model the coefficients for extinction, scattering, and absorption, the angular scattering distribution, and other optical parameters have been computed for wavelengths between 0.2 and 40 microns. These aerosol models are presented together with a review of their experimental basis. The optical properties of these models are discussed and some comparisons of the model with experimental measurements are presented.

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Document Details

Document Type
Technical Report
Publication Date
Sep 20, 1979
Accession Number
ADA085951

Entities

People

  • Eric P. Shettle
  • Robert W. Fenn

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • C4I

DTIC Thesaurus Topics

  • Air Masses
  • Boundary Layer
  • Computer Programming
  • Electromagnetic Radiation
  • Humidity
  • Lepidoptera
  • Measuring Instruments
  • Mie Scattering
  • Normal Distribution
  • Optical Properties
  • Particle Size
  • Particles
  • Physical Properties
  • Radiation
  • Refractive Index
  • United States
  • Urban Areas

Readers

  • Atmospheric Remote Sensing.
  • Computational Modeling and Simulation