A FINITE LINE SOURCE DISPERSION MODEL FOR MOBILE SOURCE AIR POLLUTION

The paper describes briefly the formulation and application of a finite line source dispersion model constructed on the basis of a Gaussian-type transport kernel. The formulation is sufficiently general that any arbitrary orientation of the line can be handled. For cases where the line is at small angles with respect to the wind, approximate expressions as well as segmentation of the line, if necessary, are used. There are integrated into the general algorithmic scheme by means of a series of geometric tests. The general capabilities of the model are tested first with some hypothetical cases and then with actual air quality data. The latter case studies correspond to three separate periods of air quality monitoring at O'Hare Airport during which the aircraft emissions and the ground vehicle emissions play alternately important roles. The generally good agreement between model predictions and air quality data provides support for the validity of the approach. The overall efficiency of the model in terms of computer time as well as its limitations are briefly discussed.

  • Corporate Authors:

    Air Pollution Control Association

    4400 Fifth Avenue
    Pittsburgh, PA  USA  15213
  • Authors:
    • WANG, I T
    • Rote, D M
  • Publication Date: 1975-7

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Filing Info

  • Accession Number: 00155935
  • Record Type: Publication
  • Source Agency: Massachusetts Institute of Technology
  • Files: TRIS
  • Created Date: Sep 20 1977 12:00AM