Record Display for the EPA National Library Catalog


Main Title Effects of Gridded Precipitation Bias on Wet Deposition Predictions.
Author Clark, T. L. ; Dennis, R. L. ; Palka, D. ; Olson, M. P. ; Voldner, E. C. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. ;Program Resources, Inc., Research Triangle Park, NC. ;Atmospheric Environment Service, Downsview (Ontario).
Year Published 1986
Report Number EPA/600/D-86/171;
Stock Number PB86-230091
Additional Subjects Sulfur ; Precipitation(Meteorology) ; Weather forecasting ; Statistical analysis ; Regional planning ; Mathematical models ; Periodic variations ; Grids(Coordinates) ; Volume ; Seasonal variations ; Sulfur dioxide ; Oxides ; Sites ; Surveys ;
Library Call Number Additional Info Location Last
NTIS  PB86-230091 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 17p
Spatially averaged precipitation amounts are used by many regional models to predict sulfur wet deposition amounts across the same grid cells. Gridded precipitation amounts routinely calculated by the CMC were compared to 1980 seasonal and annual precipitation amounts at 41 to 60 precipitation chemistry sites in eastern North America. For each period, the mean gridded amounts were found to be lower than the mean amounts at the sites, as much as 22.9%. To assess the effects of this bias in the gridded precipitation amounts on the predictions of sulfur wet deposition amounts, 1980 weekly predictions of the Atmospheric Environment Service LRT Model at 18 eastern North American grid cells were recalculated using site precipitation amounts.