Record Display for the EPA National Library Catalog

RECORD NUMBER: 50 OF 231

OLS Field Name OLS Field Data
Main Title Continued Research in Mesoscale Air Pollution Simulation Modeling. Volume 7. Mathematical Modeling of Urban Aerosol Dynamics.
Author Jerskey, T. N. ; Reid, L. E. ; Seinfeld, J. H. ; Gelbard, F. ;
CORP Author Systems Applications, Inc., San Rafael, CA. ;California Inst. of Tech., Pasadena.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-68-02-2216; EPA/600/3-84/095C;
Stock Number PB85-137388
Additional Subjects Air pollution ; Atmospheric models ; Mathematical models ; Aerosols ; Dynamics ; Urban areas ; Photochemistry ; Test chambers ; Transport properties ; Smog ; Air quality
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-137388 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 203p
Abstract
A simplified model of the dynamics of photochemical aerosols is developed, and initial applications are presented. The model, which can be incorporated in or coupled to a photochemical air quality simulation model, takes into consideration the emissions of particles with diameters of 0.01 to 1.0 micrometer and their growth in this size range by the formation of secondary aerosol. The formation of particulate matter is assumed to occur in two stages--condensable material first forms in the gas phase and then diffuses to the particles. A pseudo-steady-state is assumed in which the rate of formation of condensable material in the gas phase is set equal to the rate at which condensation occurs on particles. Model simulations are presented for a batch system both with and without sources of primary aerosol and for a trajectory system. Model simulations and smog chamber experiments are in qualitative agreement.