Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Concentration Statistics by Wind Direction for 1976 St. Louis SO2 Measurements and Model Estimates.
Author Turner, D. B. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1985
Report Number EPA/600/D-85/096;
Stock Number PB85-198331
Additional Subjects Sulfur dioxide ; Mathematical models ; Wind direction ; Air pollution ; Concentration(Composition) ; Missouri ; Sites ; Urban areas ; Sampling ; Air quality ; Emission inventories ; Point sources ; Saint Louis(Missouri)
Library Call Number Additional Info Location Last
NTIS  PB85-198331 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 24p
In a previous evaluation of the urban air quality simulation model RAM using hourly SO2 concentrations measured in 1976 at 13 sites during the Regional Air Pollution Study conducted in St. Louis, Missouri, bias with stability was noted. A speculated cause of maxima from the model being calculated during stable conditions was that numerous small and medium point sources were included in the area source part of the emission inventory. Measured maxima occurred over a variety of conditions from unstable to stable. Five statistics: (1) maximum, (2) second highest, (3) median, (4) mean, and (5) minimum related to concentration (both modeled and measured) were calculated for each direction for each of the 13 sites. Various displays of these statistics are used to explore the validity of the speculation regarding source types. Procedures and displays developed can be used in data checking and quality control of emissions inventory data collection as well as in use of receptor models.