datididatticamisure in tempo realemodellinotizie   Home

Scheda modello

PEM: Pollution Episodic Model

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.


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


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


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


  • 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.



Estratto dalla banca modelli del progetto CEE GAIA INCO - www.ess.co.at/GAIA