Record Display for the EPA National Library Catalog


Main Title Rocky Mountain Acid Deposition Model Assessment: Evaluation of Mesoscale Acid Deposition Models for Use in Complex Terrain.
Author Morris, R. E. ; Kessler, R. C. ; Douglas, S. G. ; Styles, K. R. ;
CORP Author Systems Applications, Inc., San Rafael, CA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1988
Report Number EPA-68-02-4187; EPA/600/3-88/008;
Stock Number PB88-167481
Additional Subjects Meteorology ; Model tests ; Air pollution ; Terrain ; Airborne wastes ; Nitrogen oxides ; Sulfur ; Acid rain ; Complex terrain ; Rocky Mountain Region(United States)
Library Call Number Additional Info Location Last
NTIS  PB88-167481 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 241p
The report includes an evaluation of candidate meteorological models and acid deposition models. The hybrid acid deposition/air quality modeling system for the Rocky Mountains makes use of a mesoscale meteorological model, which includes a new diagnostic wind model, as a driver for a Lagrangian puff model that treats transport, dispersion, chemical transformation, and dry and wet deposition. Transport will be defined from the diagnostic wind model based on the wind at the puff center. The treatment of dispersion will be based on the parameterization in the PNL/MELSAR-POLUT, while retraining the MESOPUFF-II dispersion algorithms as an option. Based on the evaluation of the chemical mechanisms, the RIVAD chemistry appears to be the most scientifically sound, as well as consistent, with the Lagrangian puff model formulation. Dry deposition will use the CCADM dry deposition module with some minor adjustments. Wet deposition will be based on the scavenging coefficient approach as used in the ERT/MESOPUFF-II.