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RECORD NUMBER: 21 OF 33

OLS Field Name OLS Field Data
Main Title Impact of Meteorology on Ozone in Houston.
Author Eder, B. K. ; Davis, J. M. ; Nychka, D. ;
CORP Author National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div. ;National Inst. for Statistical Sciences, Research Triangle Park, NC. ;North Carolina State Univ. at Raleigh.;Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
Publisher 1997
Year Published 1997
Report Number EPA/600/A-97/033;
Stock Number PB97-193718
Additional Subjects Ozone ; Meteorological parameters ; Cluster analysis ; Ecological concentration ; Photochemical reactions ; Atmospheric circulation ; Fronts(Meteorology) ; Meteorological data ; Data sets ; Diurnal variations ; Statistical analysis ; Houston(Texas) ; Average linkage ; K means
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB97-193718 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/22/1997
Collation 16p
Abstract
This paper compares the results from both a one-stage hierarchical clustering technique (average linkage) and a two-stage technique (average linkage then k-means) as part of an objective meteorological classification scheme designed to better elucidate ozone's dependence on meteorology in the Houston, Texas area. When applied to twelve years of meteorological data (1981-1992), each technique identified seven statistically distinct meteorological regimes, the majority of which exhibited significantly different daily 1-hour maximum ozone (O3) concentrations. While both clustering approaches proved successful, the two-stage approach did appear superior in terms of better segregation of the mean O3 concentrations.