Accession Number:

ADA229920

Title:

WADOCT-An Atmospheric Dispersion Model for Complex Terrain

Descriptive Note:

Rept. for May 1989-May 1990

Corporate Author:

AIR FORCE SYSTEMS COMMAND HANSCOM AFB MA GEOPHYSICS LAB

Personal Author(s):

Report Date:

1990-05-09

Pagination or Media Count:

51.0

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.

Subject Categories:

  • Atmospheric Physics
  • Chemical, Biological and Radiological Warfare
  • Air Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE