Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Weekend/weekday differences in oxidants and their precursors /
Author Horie, Yuji ; Cassmassi, Joseph ; Lai, Larry ; Gurtowski, Louis
Other Authors
Author Title of a Work
Horie, Yuji.
CORP Author Technology Service Corp., Santa Monica, CA.;Environmental Protection Agency, Research Triangle Park, NC. Monitoring and Data Analysis Div.
Publisher U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards ; National Technical Information Service [distributor],
Year Published 1979
Report Number EPA-450/4-79-013; EPA-68-02-2595
Stock Number PB-300 479
OCLC Number 09059198
Subjects Oxidizing agents. ; Air--Pollution--United States. ; Atmospheric pressure--United States.
Additional Subjects Air pollution ; Oxidizers ; Ozone ; Concentration(Composition) ; Meteorology ; Urban areas ; Wind(Meteorology) ; Sites ; Nitrogen oxides ; Atmospheric motion ; Northeast Region(United States) ; Air quality data
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EIAD  EPA-450/4-79/013 Region 2 Library/New York,NY 01/20/1995
EJBD ARCHIVE EPA 450-4-79-013 Headquarters Library/Washington,DC 05/28/2019
EJED  EPA 450/4-79-013 OCSPP Chemical Library/Washington,DC 01/11/2002
EKAM  EPA-450/4-79-013 Region 4 Library/Atlanta,GA 09/12/1997
EKBD  EPA-450/4-79-013 Research Triangle Park Library/RTP, NC 08/27/1999
ERAD  EPA 450/4-79-013 Region 9 Library/San Francisco,CA 02/04/2013
ESAD  EPA 450-4-79-013 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-300 479 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation viii, 140 pages : illustrations, 1 map ; 28 cm
Differences between weekend and weekday oxidant and oxidant precursor concentrations in the Northeastern United States are examined. Statistical tests are employed to assess whether any differences in daily maximum oxidant concentrations are significant. Weekend/weekday differences in meteorology are also examined for any potential impact on weekend/weekday differences in oxidants. Oxidant concentrations are adjusted in an attempt to account for variations in meteorology, and weekend/weekday differences in the adjusted values are examined. Finally, statistical tests are used to determine significant differences in early morning oxidant precursor concentrations. The analyses revealed that oxidant concentrations downwind of major urban areas tend to be lower on weekends. However, the reductions are not as large as those observed in precursor concentrations within the major urban areas. Reductions in weekend oxidant concentrations at locations within the major urban areas are not as great as those at downwind locations.
"Technology Service Corporation." "March 1979." Includes bibliographical references (pages 110-111). "EPA-450/4-79-013." "Contract no. 68-02-2595."