Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Comparison of RAM (Regional Air Monitor) Model Estimates with 1976 St. Louis RAPS (Regional Air Pollution Study) Measurements of Sulfur Dioxide.
Author Turner, D. B. ; Irwin, J. S. ; Busse, A. D. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC. Meteorology and Assessment Div.
Year Published 1985
Report Number EPA/600/J-85/072;
Stock Number PB85-225639
Additional Subjects Sulfur dioxide ; Air pollution ; Comparison ; Sites ; Sampling ; Concentration(Composition) ; Reprints ; RAM model ; Regional air pollution study ; Air pollution sampling ; Air quality ; Gaussian plume models
Library Call Number Additional Info Location Last
NTIS  PB85-225639 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 8p
Estimates from the model RAM were compared with actual SO2 measurements from 13 Regional Air Pollution Study (RAPS) sites in St. Louis for 1976, with particular emphasis on the second highest concentrations for the 1-h, 3-h, and 24-h averaging times; the average annual concentration; and the top 5% of the distribution for the 24-h concentrations. Although there was considerable scatter in the comparison of the second highest concentrations, only 8 of the 39 data points were outside the bounds of a factor of two, and although there was more underestimation by the model as the averaging time increased, no overall bias was seen. Exponential distributions fit the top 5% of the 24-h concentration distributions for all sites for both the estimated and measured concentrations. The distributions for the estimated and measured concentrations matched at 8 of the 13 sites.