Record Display for the EPA National Library Catalog


Main Title Continued research in mesoscale air pollution simulation modeling. Volume II, Refinements in the treatment of chemistry, meteorology, and numerical integration procedures /
Author Reynolds, S. D. ; Ames, J. ; Hecht, T. A. ; Meyer, J. P. ; Whitney., D. C. ;
Other Authors
Author Title of a Work
Reynolds, S. D.
Demerjian, Kenneth L.
CORP Author Systems Applications, Inc., San Rafael, Calif.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
Publisher Environmental Sciences Research Laboratory ; National Technical Information Service,
Year Published 1976
Report Number EPA 600/4-76-016 B; SAI/EF75-69; EPA-68-02-1237
Stock Number PB-257 527
OCLC Number 220807095
Subjects Photochemical smog--Simulation methods. ; Air--Pollution--Simulation methods.
Additional Subjects Air pollution ; Atmospheric models ; Computerized simulation ; Computer programs ; Reaction kinetics ; Concentration(Composition) ; Mathematical models ; Numerical analysis ; Carbon monoxide ; Nitrogen oxides ; Sensitivity ; Photochemical reactions ; Physical properties ; Chemical properties ; Urban areas ; Assessments ; Modifications ; Diffusion ; Wind velocity ; Smog ; Los Angeles Basin ; California ; FORTRAN ; Chemical reaction mechanisms ; Airshed models ; Grid model ; MODKIN computer program
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-4-76-016b Headquarters Library/Washington,DC 12/27/2011
NTIS  PB-257 527 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xii, 288 leaves : ill. ; 28 cm.
This report describes the refinement of a mesoscale photochemical air quality simulation model through studies of selected chemical and meteorological phenomena that contribute to air pollution. The chemistry activities focused on the design of an automatic computer program for evaluating kinetic mechanisms, the improvement of a photochemical mechanism for incorporation in mesoscale models, and the development of a chemical mechanism for describing SO2 oxidation. The meteorology studies examined the sensitivity of the model to the inclusion of wind shear, algorithms for deriving mass-consistent wind fields, and the treatment of turbulent diffusivities and elevated inversion layers. Alternative numerical techniques for solving the advection/diffusion equation in grid models are evaluated, including various finite difference, particle-in-cell, and finite element methods, in an attempt to find a suitable methodology for accurately calculating the horizontal transport of pollutants. Finally, the report considers the problem of multiday model usage and presents results from a two-day CO simulation for the Los Angeles basin.
Includes bibliographical references (p. 283-287). "68-02-1237." "EPA 600/4-76-016 B." "May 1976." "Project Officer, Kenneth L. Demerjian." Photocopy. Research Triangle Park, N.C. : US EPA,