Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title ENAMAP-1A Long Term Air Pollution Model: Refinement of Transformation and Deposition Mechanisms.
Author Endlich, Roy M. ; Bhumralkar, Chandrakant M. ; Brodzinsky, Richard ; Nitz, Kenneth C. ; Cantrell, Bruce K. ;
CORP Author SRI International, Menlo Park, CA.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-68-02-3424; EPA-600/D-82-351;
Stock Number PB83-140731
Additional Subjects Air pollution ; Mathematical models ; Sulfur oxides ; Concentration(Composition) ; Transport properties ; Diffusion coefficients ; Sampling ; Air pollution sampling
Library Call Number Additional Info Location Last
NTIS  PB83-140731 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 21p
This paper is concerned with the long-range transport of air pollution over eastern North America. Using standard weather reports and several SOx emission data inventories, the ENAMAP model computes the airborne concentrations of SO2 and SO4 and their deposition on the earth's surface. The newest version of the model (ENAMAP-1B) includes the influences of smoothed terrain on the winds and divides the atmospheric boundary layer into three parts. This treatment allows pollution emissions to be divided among layers. The model has been used to compute monthly average values of concentration and deposition for January and August 1977. Comparisons with air quality measurements show that calculated SO2 concentrations are reasonably accurate, but SO4 concentrations are generally too high. Further tuning of the model is required to optimize its performance. A version of the model applicable to NOx emissions is currently being tested.