||Evaluation of the Chemical and Physical Processes Affecting Sulfate and Nitrate Wet Deposition.
Shim, S. G. ;
Chang, Y. S. ;
Cho, S. Y. ;
Carmichael, G. R. ;
||Iowa Univ., Iowa City. Dept. of Chemical and Materials Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Air pollution ;
Chemical tests ;
Acid rain ;
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The STEM-II model was applied to a case study of the acid deposition upwind and downwind of Philadelphia, Pennsylvania. The model has the Atkinson-Lloyd kinetics mechanism for gas phase chemistry and an aqueous phase mechanism for 22 species. The model results indicate that the major trends in the data are correctly simulated. Time histories at particular grid locations are consistent with the known meteorological conditions.