||Plume-in-Grid Treatment of Major Elevated Point-Source Emissions in Models-3.
Gillani, N. V.;
Wu, Y. L.;
||Alabama Univ. in Huntsville. ;National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div.;Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.;Tennessee Valley Authority, Muscle Shoals, AL.
Air pollution dispersion;
Air pollution sources;
Euler equations of motion;
CMAQ(Community Multiscale Air Quality);
Community Multiscale Air Quality Model;
Models-3 modeling system
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||The plume-in-grid modeling approach for treating the subgrid scale dispersion, transport, and chemistry of pollutants contained in plumes released from major point source stacks is described. A plume dynamics model provides the plume rise height, plume position, and the horizontal and vertical plume dispersions in the subgrid scale phase when the pollutants are to be simulated by the Lagrangian reactive plume module. A coupling exists between the models as the grid concentrations provide boundary conditions for entrainment to the subgrid plume sections, and a feedback ocurrs when the plume size and chemical criteria indicate a plume's pollutants are to be transferred to the grid system for further simulation. The methods for simulating the plume processes are also presented and the input/output data involved with these two components of the Models 3 plume-in-grid approach are discussed.
||Prepared in cooperation with National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab. and Tennessee Valley Authority, Muscle Shoals, AL.
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||PC A03/MF A01