Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of the PEM-2 using the 1982 Philadelphia aerosol field study data base /
Author Ku, Jia-Yeong. ; Ku, J. Y. ; Rao, K. S.
Other Authors
Author Title of a Work
Rao, K. Shankar.
CORP Author National Oceanic and Atmospheric Administration, Oak Ridge, TN. Atmospheric Turbulence and Diffusion Div.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Atmospheric Sciences Research Laboratory,
Year Published 1986
Report Number EPA/600/3-86/016
Stock Number PB86-167921
OCLC Number 700504532
Subjects Air--Pollution--Mathematical models.
Additional Subjects Mathematical models ; Air pollution ; Performance evaluation ; Sulfur dioxide ; Statistical analysis ; Urban areas ; Particles ; Sulfates ; Concentration(Composition) ; Pollution episodic model ; Air quality data ; Philadelphia(Pennsylvania)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-600/3-86-016 Research Triangle Park Library/RTP, NC 02/07/2011
NTIS  PB86-167921 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation x, 90 p. : ill., charts ; 28 cm.
The report describes an evaluation of the Pollution Episodic Model Version 2 (PEM-2) using measurements obtained from 29 days of the Philadelphia Aerosol Field Study. The model performance was determined by comparing predicted 12-h and 24-h average concentrations against corresponding observed values at six monitoring sites for four pollutant species; particulate total mass, fine sulfate and SO2. A first-order chemical transformation of SO2 to sulfate was considered, in addition to the direct emission, dry deposition, and settling of the pollutant species. The model domain covered 80km X 80km with 32 X 32 grid cells which included 300 major point sources and 289 area sources for the Philadelphia urban area. Hourly meteorological observations and hourly emissions were input to the model. Statistical measures of difference and correlation paired in time and space revealed that the particulate species were simulated closely. These results, however, must be interpreted with caution since the background concentrations exceeded the local urban source contributions. Tables of statistical and regression analyses results as well as graphical displays of predicted and observed concentrations are presented and discussed.
Project officer: James M. Godowitch. Prepared by the Atmospheric Turbulence and Diffusion Division, National Oceanic and Atmospheric Administration. "February 1986." Includes bibliographical references (89-90)