Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Analyses of PEM-2 model evaluation results for short-term urban particulate matter /
Author Godowitch, James M. ; Godowitch, J. M.
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Publisher U.S. Environmental Protection Agency, Atmospheric Sciences Research Laboratory,
Year Published 1987
Report Number EPA/600-3-87/022
Stock Number PB87-199667
OCLC Number 706708637
Subjects Atmospheric models. ; Atmospheric diffusion--Mathematical models. ; Cities and towns. ; Acid precipitation (Meteorology) ; Environmental monitoring. ; Air--Pollution.
Additional Subjects Atmospheric models ; Dispersing ; Urban areas ; Air pollution ; Aerosols ; Emission ; Environmental monitoring ; Particulates ; PEM-2(Pollution Episodic Model Version 2) ; Gaussian plume models
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-3-87-022 Headquarters Library/Washington,DC 03/26/2014
EJBD  EPA 600-3-87-022 Headquarters Library/Washington,DC 03/25/2016
EKBD  EPA-600/3-87-022 Research Triangle Park Library/RTP, NC 03/21/2011
NTIS  PB87-199667 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation viii, 44 p. : ill. ; 28 cm.
The Pollution Episodic Model Version 2 (PEM-2), an urban dispersion model, has been evaluated with measurements from the 1982 Philadelphia Aerosol Field Study data base in order to investigate its ability to model 12-hour average concentrations of particulate matter less than 10 micrometers (PM sub 10). Regional PM sub 10 background was derived from the measured concentration at an upwind site selected as the background monitor with the modeled PM sub 10 concentrations subtracted because all sites were in the emissions region. About 70% of the measured PM sub 10 at most monitoring sites was contributed by regional background. Model performance was determined from statistical measures of difference and correlation between observed and modeled concentrations paired in time and location. Statistical results were better for modeled plus background values versus observed concentrations. Mean and high-five PM sub 10 concentrations from the PEM-2 model were about 25% lower than RAM predictions at four sites within the city limits, and 35-40% lower at the two most distant sites from the urban center.
"June 1987"--Cover. Includes bibliographical references (p. 34-35) "EPA/600/3-87/022."