Densitometric Analyses to Determine Artificial Cloud Expansion Characteristics.

Abstract

A program of microdensiometric reduction and computer analysis of photographic images of smoke and chemical tracers in the stratosphere and upper atmosphere is described. Turbulent heating rates, diffusion coefficients and other parameters of turbulence were determined by Fourier and statistical analysis of digitally recorded optical density distributions. Wind data derived by the smoke trail method in the stratosphere and mesosphere was also analyzed to determine Richardson numbers and values of heating and turbulent diffusivity. Investigation of the introduction of vertical velocities into AFGL model atmosphere codes was undertaken and turbulent diffusion coefficients were made available for input to these codes. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 15, 1978
Accession Number
ADA065259

Entities

People

  • Christian A. Trowbridge

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Altitude
  • Atmospheric Motion
  • Automatic
  • Coefficients
  • Diffusion
  • Diffusion Coefficient
  • Diffusivity
  • Equations
  • Fourier Analysis
  • Measurement
  • Photographic Images
  • Photographs
  • Turbulence
  • Turbulent Diffusion
  • Turbulent Mixing

Readers

  • Aerosol Science/Aerosol Physics
  • Atmospheric Science/Meteorology
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Space