OLS : Record


Main Title Automated Classification Scheme Designed to Better Elucidate the Dependence of Ozone on Meteorology.
Author Eder, B. K.; Davis, J. M.; Bloomfield, P.;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. ;North Carolina State Univ. at Raleigh.
Publisher c1994
Year Published 1994
Report Number EPA/600/J-94/498;
Stock Number PB95-155172
Subjects Ozone; Meteorology; Classification; Clustering; Models; Regression analysis; Meteorological data; Concentration(Composition); Automation; Birmingham(Alabama)
Library   Call Number Additional Info Location Date Modified
NTIS PB95-155172 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 05/26/1995
Collation 23p
Abstract The paper utilizes a two-stage (average linkage then convergent k-means) clustering approach as part of an objective meteorological classification scheme designed to elucidate ozone's dependence on meteorology. When applied to ten years (1981-1990) of meteorological data for Birmingham, Alabama, the classification scheme identified seven statistically distinct meteorological regimes, which exhibited significantly different mean daily 1-hour maximum concentrations characteristics. Results from this two-stage clustering approach were then used to develop seven 'refined' stepwise regression models that were designed to (1) identify the optimum set of independent meteorological parameters influencing the ozone (O3) concentrations within each meteorological cluster and (2) to weigh each independent parameter according to its unique influence within that cluster.
Supplementary Notes Pub. in Jnl. of Applied Meteorology, v33 n10 p1182-1205 Oct 94. Prepared in cooperation with North Carolina State Univ. at Raleigh.
NTIS Title Notes Journal article.
Category Codes 55C; 68A
NTIS Prices PC A03/MF A01
Primary Description 600/09
Document Type NT
Control Number 504716195
Cataloging Source NTIS/MT
Origin NTIS
Type CAT