Record Display for the EPA National Library Catalog

RECORD NUMBER: 9 OF 13

OLS Field Name OLS Field Data
Main Title Spatial variability of ozone and other pollutants at St. Louis, Missouri /
Author Karl, Thomas.
Other Authors
Author Title of a Work
Karl, Thomas.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1979
Report Number EPA-600/4-79-063
Stock Number PB80-132830
OCLC Number 53093575
Additional Subjects Air pollution ; Ozone ; Nitrogen oxides ; Carbon monoxides ; Hydrocarbons ; Metropolitan areas ; Spatial distribution ; Concentration(Composition) ; Missouri ; Saint Louis(Missouri)
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=20015NSG.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 600-4-79-063 Headquarters Library/Washington,DC 03/12/2012
EJBD  EPA 600-4-79-063 Headquarters Library/Washington,DC 05/23/2014
EKBD  EPA-600/4-79-063 Research Triangle Park Library/RTP, NC 10/02/2003
ENAD  EPA-600/4-79-063 Region 7 IRC Library/Kansas City,KS 05/20/2005
ESAD  EPA 600-4-79-063 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB80-132830 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation vii, 34 p. : maps ; 28 cm.
Abstract
A network of 25 aerometric stations was part of the U.S. Environmental Protection Agency's Regional Air Pollution Study (RAPS) in the greater St. Louis area. At these stations ozone (O3) and various other photochemical pollutants (NO, NO2, and total hydrocarbons (THC3)) as well as carbon monoxide (CO) were analyzed with respect to their spatial variability. Data were analyzed for the warm months of the year, April thru October of 1975 and 1976--periods during which high O3 concentrations are common. The results of these analyses indicate that when O3 concentrations are high (above 100 ppb) the daily 1-h maximum O3 concentration is highly dependent upon the location of measurement. Measurements made at these times in both urban and rural locations in and around St. Louis were frequently found to vary by a factor of two and occasionally by a factor as large as four. Simultaneous hourly average measurements for each of the pollutants were correlated across the network of 25 stations. Rather poor correlations were found for the primary pollutants such as CO, NO, NO2, and THC. Analyses of normalized fields of pollutant concentrations suggest that the scavenging of O3 by NO dominates the O3-NOx reaction cycle before 1000 CDT.
Notes
"October 1979." "EPA-600/4-79-063."