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RECORD NUMBER: 47 OF 121

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
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NTIS  PB97-193718 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 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.
Supplementary Notes See also PB95-155172. Prepared in cooperation with National Inst. for Statistical Sciences, Research Triangle Park, NC. and North Carolina State Univ. at Raleigh. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
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Category Codes 68A; 55E; 55A
NTIS Prices PC A03/MF A01
Primary Description 600/09
Document Type NT
Cataloging Source NTIS/MT
Control Number 731601220
Origin NTIS
Type CAT