Record Display for the EPA National Library Catalog

RECORD NUMBER: 49 OF 2622

OLS Field Name OLS Field Data
Main Title A regional scale (1000 km) model of photochemical air pollution. part 1, Theoretical formulation /
Author Lamb, Robert G.
CORP Author 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 1983
Report Number EPA-600/3-83-035
Stock Number PB83-207688
OCLC Number 26683749
Subjects Photochemical smog--Mathematical models. ; Photochemical smog--United States. ; Air--Pollution--United States.
Additional Subjects Air pollution ; Mathematical models ; Photochemical reactions ; Oxidizers ; Particles ; Visibility ; Hydrocarbons ; Nitrogen oxides ; Ozone ; Concentration(Composition) ; Forecasting ; Transport properties ; Numerical solution ; Acid rain
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=20015KWN.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 600-3-83-035 Headquarters Library/Washington,DC 04/06/2010
NTIS  PB83-207688 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 04/04/2019
Collation xi, 227 p. : ill. ; 28 cm.
Abstract
A theoretical framework for a multi-day 1000 km scale simulation model of photochemical oxidant is developed. It is structured in a highly modular form so that eventually the model can be applied through straightforward modifications to simulations of particulates, visibility and acid rain. Among the physical and chemical processes that the model is designed to handle are: horizontal transport; photochemistry and nighttime chemistry of the products and precursors of pollutant reactions; nighttime wind shear, stability stratification and turbulence 'episodes' associated with the nocturnal jet; cumulus cloud effects - venting pollutants from the mixed layer, perturbing photochemical reaction rates, etc; mesoscale vertical motion induced by terrain and horizontal divergence of the large scale flow; subgrid scale chemistry processes -- resulting from emissions from sources smaller than the model's grid can resolve; natural sources of hydrocarbons, NOx and stratospheric ozone; and others. Considerable attention is given to the question of the predictability of pollutant concentrations at long range and to the related problem of parameterization of 'mesoscale' diffusion, the design of model 'validation' experiments, and the like.
Notes
"May 1983". Includes bibliographical references. "EPA-600/3-83-035."
Contents Notes
"A theoretical framework for a multi-day 1000 km scale simulation model of photochemical oxidant is developed. It is structured in a highly modular form so that eventually the model can be applied through straightforward modifications to simulations of particulates, visibility and acid rain. The model structure is based on phenomenological concepts and consists of 3 1/2 layers. The interface surfaces that separate the layers are functions of both space and time that respond to variations in the meteorological phenomena that each layer is intended to treat. Among the physical and chemical processes that the model is designed to handle are: horizontal transport; photochemistry and nighttime chemistry of the products and precursors of pollutant reactions; nighttime wind shear, stability stratification and turbulence "episodes" associated with the nocturnal jet; cumulus cloud effects - venting pollutants from the mixed layer, perturbing photochemical reaction rates, etc; mesoscale vertical motion induced by terrain and horizontal divergence of the large scale flow; subgrid scale chemistry processes -- resulting from emissions from sources smaller than the model's grid can resolve; natural sources of hydrocarbons, NOx and stratospheric ozone; and others. Considerable attention is given to the question of the predictability of pollutant concentrations at long range and to the related problem of parameterization of "mesoscale" diffusion, the design of model "validation" experiments, and the like.