Record Display for the EPA National Library Catalog


Main Title A Lagrangian photochemical air quality simulation model : adaptation to the St. Louis - RAPS data base, volume I, model formation /
Author Lurmann, Fred. ; Lurman, Fred ; Godden, Daniel ; Lloyd, Alan C. ; Nordsieck, Richard A.
CORP Author Environmental Research and Technology, Inc., Westlake Village, CA. Environmental Analysis Div.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1979
Report Number EPA-600/8-79-015a; EPA-68-02-2765
Stock Number PB-300 470
OCLC Number 52802130
Subjects Air--Pollution--Missouri--Saint Louis--Measurement ; Air--Pollution--Measurement
Additional Subjects Air pollution ; Mathematical models ; Photochemical reactions ; Reaction kinetics ; Oxidation ; Hydrocarbons ; Nitrogen oxides ; Sulfur oxides ; Troposphere ; Ozone ; Sulfates ; Concentration(Composition) ; Atmosphere diffusion ; Algorithms ; Missouri ; Illinois ; Air quality ; Lagrangian photochemical model ; Homogeneous reactions ; Chemical reaction mechanisms ; State of the art ; Regional Air Pollution Study ; Saint Louis(Missouri)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  EPA-600/8-79-015a Region 1 Library/Boston,MA 05/25/2016
EJBD  EPA 600-8-79-015a c.1 Headquarters Library/Washington,DC 04/02/2014
EKBD  EPA-600/8-79-015a Research Triangle Park Library/RTP, NC 03/05/2004
ELBD ARCHIVE EPA 600-8-79-015a Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-8-79-015A Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-300 470 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation volumes (various pagings) ; 28 cm.
A Lagrangian photochemical air quality simulation model has been adapted to the St. Louis, Missouri/Illinois metropolitan region and the Regional Air Pollution Study (RAPS) aerometric and emissions data base. This adaptation was performed to provide a means for EPA to independently assess the validity of a state-of-the-art Lagrangian photochemical model. Chemical kinetic oxidation mechanisms involving hydrocarbons, nitrogen oxides and sulfur oxides and a vertical diffusion formulation developed by Environmental Research and Technology Inc. for modeling reactive pollutants in the troposphere are described. Methods for determining model input parameters are discussed and model results for ozone, nitrogen dioxide, carbon dioxide, sulfur dioxide, and sulfate are presented for three summer days in 1976. In considering so few simulations, no firm conclusions concerning model reliability are possible, although predicted pollutant concentrations are of reasonable levels. Most noteworthy for future users, the results suggest that the model may predict less ozone than is actually generated in St. Louis. Uncertainty in initial conditions of ozone and organic species is likely responsible for this discrepancy between observed and computed values.
Performed by Environmental Research and Technology, Inc. under EPA contract no. 68-02-2765. "June 1979." "EPA-600/8-79-015a." Project officer: Jack H. Shreffler.