PEM: Pollution Episodic Model

DESCRIPTION

The Pollution Episodic Model (PEM) has been developed to study urban air pollution problems and can take into account up to 300 point sources and 50 area sources. It simulates the concentrations of two pollutants together both if they are chemically non reactive and if they are heavy and have a certain deposition.

Keywords

description: air quality, gaussian plume, multiple sources, deposition, sedimentation
objectives: simulation
application: point sources, line sources, area sources, urban environment, short term, heavy gases, first order chemical reactions.

SOFTWARE AVAILABILITY

      
         The model is part of UNAMAP and is available on diskette from:      
           Computer Products      
           National Technical Information Service      
           U. S. Department of Commerce      
           Springfield, Virginia 22161      
           Phone (703) 487-4650      
         

AUTHORS

      
            William R. Pendergrass and K. Shankar Rao      
            Atmospheric Turbulence and Diffusion Division      
            NOAA      
            Oak Ridge, Tennessee 37830      
         

REFERENCES

• Briggs, G.A., 1969: Plume Rise. AEC Critical Review Series.
• Giggord, F.A., 1959: Computation of Pollution from several sources. IUnt.J. Air Pollut. 2, 109-110.
• Rao,K.S., 1981: Analytical solutions of a gradient-transfer model for plume deposition and sedimentation. EPA-600/3-82-079, U.S.Environmental Protection Agency.
• Texas Air Control Board, 1979: User's Guide: Texas Episodic Model. Permits Section, Austin, TX, 215 pp.

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