Atmospheric Diffusion of Droplet Clouds

Abstract

This note provides a preliminary analysis of contamination footprints associated with release of liquid chemical warfare agents in the atmosphere. When defense systems analysts require contamination footprints for situations that depart radically from the limited set of available field data, they use computer models presumably based on a sound understanding of the underlying physics to predict contamination zones and magnitudes. The author has found, however, that the dispersal and diffusion models most used in air base and tactical ballistic missile defense studies neglect a fundamental element in describing the processes of atmospheric diffusion. This omission translates into a potentially severe underestimate of toxic cloud exposure. It is shown how these models can be modified to include the important effect of the droplets' fall velocity.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1984
Accession Number
ADA146335

Entities

People

  • J. Aroesty

Organizations

  • RAND Corporation

Tags

Communities of Interest

  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Atmospheric Motion
  • Boundary Layer
  • Chemical Warfare
  • Chemical Warfare Agents
  • Computer Programs
  • Databases
  • Diffusion
  • Diffusion Theory
  • Field Tests
  • Models
  • Normal Distribution
  • Particles
  • Standards
  • Trajectories
  • Turbulence
  • Wind
  • Wind Shear

Fields of Study

  • Environmental science

Readers

  • Aerosol Science/Aerosol Physics
  • Systems Analysis and Design
  • Theoretical Analysis.