Record Display for the EPA National Library Catalog

RECORD NUMBER: 189 OF 250

Main Title Observations and Modeling of NOx in an Urban Area.
Author Shreffler, J. H. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-600/D-82-352;
Stock Number PB83-140749
Additional Subjects Nitrogen oxides ; Urban areas ; Assessments ; Nitrogen dioxide ; Nitrogen oxide(NO) ; Concentration(Composition) ; Sampling ; Mathematical models ; Air quality ; Regional Air Pollution Study ; Saint Louis(Missouri)
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB83-140749 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
Abstract
Data from the Regional Air Pollution Study are surveyed to delineate the experience with NO and NO2 concentrations in St. Louis, a metropolitan area in the central United States. Two-year time series are produced for the daily maximum 1-h average in the monitoring network and the 24-h average of central urban sites. Various aspects of the data are displayed graphically including the time and location of the maximum, the distribution of concentration, and the relation of high concentrations to meteorological factors. A stagnation episode is examined in detail, and predictions of an air quality model are compared with measured levels of O3, NO, NO2, and CO.