Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Association between meteorological conditions and high ozone and sulfate concentrations /
Author DeMarrias, Gerard A. ; DeMarrais, Gerard A.
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory,
Year Published 1979
Report Number EPA/600/4-79/009
Stock Number PB-293 485
Subjects Meteorology--United States--Observations. ; Air quality--United States.
Additional Subjects Air pollution ; Ozone ; Sulfates ; Concentration(Composition) ; Atmospheric motion ; Transport properties ; Chemical reactions ; Diurnal variations ; Sources ; Atmospheric temperature ; Visibility
Library Call Number Additional Info Location Last
NTIS  PB-293 485 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 64 pages : illustrations ; 28 cm
A 1,000,000 sq km area of the Eastern United States had sulfate concentrations exceeding 10 microgram/cu m on July 10, 1974, and there were indications that parts of the area had high concentrations on prior days. The meteorology associated with the high concentrations and correlations of high ozone and sulfate concentrations are discussed. It appeared that slow moving and subsiding air contributed to the high concentrations of both pollutants. Long range transport, as shown by trajectory analyses, was a factor in the problems in most areas, but the worst situations with regards to sulfates were associated with emissions from nearby, upwind sources. While high ozone concentrations were observed immediately prior to high sulfate concentrations in many areas, there were high sulfate concentrations that were not associated with high ozone concentrations. In the latter situation, the high sulfate concentrations were associated with air which had earlier movement over areas with high SO2 emission.
"EPA-600/4-79-009." "February 1979." Includes bibliographical references. Microfiche.