Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Concepts and Applications of Photochemical Smog Models.
Author Eschenroede, A. Q. ; Martine, J. R. ;
CORP Author General Research Corp., Santa Barbara, Calif.
Year Published 1971
Report Number GRC-TM-1516; EPA-71-22 ;CPA-22-69-127; APRAC-CAPA-7-68; 1502;
Stock Number PB-220 400
Additional Subjects ( Air pollution ; Mathematical models) ; ( Photochemical reactions ; Mathematical models) ; Reaction kinetics ; Smog ; Dispersion ; Hydrocarbons ; Nitrogen oxides ; Oxidizers ; Ozone ; Turbulence ; Atmospheric diffusion ;
Library Call Number Additional Info Location Last
NTIS  PB-220 400 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 131p
Following an overview of mathematical methods of analyzing air pollution, detailed developments of inputs, techniques, and validations are presented for photochemical smog modeling. Finite difference formulations are employed to compute concentration histories. The chemical kinetics are expressed as lumped parameter reaction mechanisms derived from laboratory data in the literature. Turbulent diffusion coefficients, which depend on height and time, come from atmospheric measurements. Inputs consist of source inventories for the Los Angeles basin and solar irradiation curves for the appropriate days. Predicted time histories of reactive hydrocarbons, oxides of nitrogen, and ozone are consistent with the variations observed at air monitoring stations. With refined descriptions of advection, the mathematical model will serve as a tool in planning legislation and guiding urban planning in the future. (Author)