WADOCT-An Atmospheric Dispersion Model for Complex Terrain

Abstract

WADOCT (Wind and Diffusion Over Complex Terrain) is a complex terrain dispersion model capable of running on a microcomputer. It consists of two models-(1) AFWIND, a surface-layer windflow model, and (2) AFTOX, a Gaussian puff dispersion model. The terrain induced wind field and the dispersion pattern are computed separately and independently of each other. Through a transformation scheme the location and shape of the plume footprint is then adjusted to the computed wind field. An evaluation of the model is presented using data from the AMADEUS and the Mountain Iron dispersion experiments. The evaluation shows that the model tends to underpredict the adjustment to the wind direction and overpredict the length and width of the plume footprint.

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Document Details

Document Type
Technical Report
Publication Date
May 09, 1990
Accession Number
ADA229920

Entities

People

  • Bruce A. Kunkel
  • Yutaka Izumi

Organizations

  • Air Force Systems Command

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Atmospheric Sciences
  • Coordinate Systems
  • Data Sets
  • Diffusion
  • Dispersions
  • Equations
  • Measurement
  • Meteorology
  • Personal Computers
  • Statistics
  • Surface Roughness
  • Surface Temperature
  • Temperature Gradients
  • Test And Evaluation
  • Three Dimensional
  • Wind Direction

Readers

  • Aerosol Science/Aerosol Physics
  • Computational Modeling and Simulation
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers