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RECORD NUMBER: 542 OF 704

OLS Field Name OLS Field Data
Main Title Spatial Variation in Ozone Concentrations in Phoenix, AZ for 1997.
CORP Author Environmental Protection Agency, Washington, DC. Office of Research and Development.
Year Published 2001
Report Number EPA 600/R-01/28
Stock Number PB2012-100641
Additional Subjects Air pollution monitoring ; Ozone ; Atmospheric composition ; Arizona ; Environmental exposure pathway ; Human health ; Health effects ; Metropolitan areas ; Population density ; Maps ; Statistical data ; Phoenix(Arizona)
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NTIS  PB2012-100641 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/29/2012
Collation 11p
Abstract Statistical analyses of the human health effects of airborne pollutants based on aggregate population time-series data have often relied on ambient concentrations of pollutants measured at one or more central sites in a given metropolitan area. In the particular case of ground-level ozone pollution, central-site monitoring has been justified as a regional measure of exposure partly on grounds that correlations between concentrations at neighboring sites measured over time are usually high. In analyses where multiple monitoring sites provide ambient ozone concentrations, a summary measure such as an average has thus often been regarded as adequately characterizing the exposure distribution. Indeed, a number of studies have referred to multiple-site averaging as the method for measuring ozone exposure. This report revisits the practice of multiple-site averaging. The results are drawn from an analysis examining simultaneous mapping of population density and ambient ozone concentrations on the scale of a single metropolitan area. Because of the ready availability of data associated with a related research effort, the city selected for this analysis was Phoenix, AZ.
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PUB Date Free Form Jun 2001
Category Codes 68A; 68G; 43F
NTIS Prices PC A03/MF A03
Document Type NT
Cataloging Source NTIS/MT
Control Number 102300070
Origin NTIS
Type CAT