Record Display for the EPA National Library Catalog

RECORD NUMBER: 2 OF 6

OLS Field Name OLS Field Data
Main Title Effects of Meteorology on Concentrations of Acid Aerosols.
Author Zelenka, M. P. ; Suh, H. H. ;
CORP Author National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div. ;Harvard School of Public Health, Boston, MA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1994
Year Published 1994
Report Number EPA/600/A-94/168;
Stock Number PB94-209749
Additional Subjects Air pollution sampling ; Acidity ; Aerosols ; Meteorological data ; Air temperature ; Air pressure ; Relative humidity ; Wind velocity ; Wind direction ; Acid rain ; Sulfates ; Ammonia ; Ammonium ; Hydrogen ions ; Photochemical oxidants ; Chemical analysis ; Urban areas ; Rural areas ; Comparative analysis ; Environmental transport ; Reprints ; Pittsburgh(Pennsylvania) ; Uniontown(Pennsylvania) ; Meteorological effects
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB94-209749 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 11/11/1994
Collation 8p
Abstract
Ambient air samples of strong acid aerosol, sulfate, ammonia, and ammonium were collected in Pittsburgh and Uniontown, Pennsylvania during the summer of 1990. High correlations were found for both acid aerosol and sulfate concentrations between Pittsburgh and the semi-rural site in Uniontown. One possible implication is that acid aerosols and their precursors are regionally transported. To test this hypothesis, air samples from the Uniontown site were statistically analyzed for the meteorological relationships that resulted in episodic events of elevated ambient acid aerosol levels. Standard measures of atmospheric conditions in both Pittsburgh and Uniontown were used; they included temperature, pressure, relative humidity, wind speed and direction. Results show that the episodic events of elevated acid aerosol occurred with the same general set of meteorological conditions. The major meteorological variables which correlated with the episodes were the mean wind speed in Pittsburgh and the mean westerly wind component (U) at Uniontown. These two variables accounted for one-third of the variance.