Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title CDM2: Climatological Dispersion Model, Version 2.0/ EPA/ORD (Environmental Protection Agency/Office of Research and Development) Air Quality Simulation Model (for Microcomputers).
Author Mersch, J. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC. Meteorology and Assessment Div.
Publisher 1 Aug 89
Year Published 1989
Report Number EPA/SW/DK-89/174;
Stock Number PB90-500406
Additional Subjects Models-Simulation ; Air pollution ; Dispersions ; Atmospheric motion ; Algorithms ; Wind(Meteorology) ; Plumes ; Diskettes ; Air quality ; Point sources ; Gaussian plume models ; L=Fortran ; H=IBM PC
Library Call Number Additional Info Location Last
NTIS  PB90-500406 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 03/10/1990
Collation 1 diskette
Climatological Dispersion Model-Version 2.0 (CDM-2.0) determines long-term (seasonal or annual) quasi-stable pollutant concentrations in rural or urban settings using average emission rates from point and area sources and a joint frequency distribution of wind direction, wind speed, and stability. The Gaussian plume hypothesis forms the basis for the calculations. Computations can be made for up to 200 point sources and 2500 area sources at an unlimited number of receptor locations. CDM-2.0 includes the following options: 16 or 36 wind-direction sectors, initial plume dispersion, buoyancy-induced dispersion, stack-top down wash, and gradual (transitional) plume rise. The user has a choice of seven dispersion parameter schemes. Software Description: The software is written in the FORTRAN programming language for implementation on an IBM-PC compatible microcomputer. Data is in compressed format but a dearchive utility is included.