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Titolo:
Delineation of air-quality basins utilizing multivariate statistical methods in Taiwan
Autore:
Yu, TY; Chang, LFW;
Indirizzi:
Natl Taiwan Univ, Grad Inst Environm Engn, Taipei 10764, Taiwan Natl Taiwan Univ Taipei Taiwan 10764 Environm Engn, Taipei 10764, Taiwan
Titolo Testata:
ATMOSPHERIC ENVIRONMENT
fascicolo: 18, volume: 35, anno: 2001,
pagine: 3155 - 3166
SICI:
1352-2310(200106)35:18<3155:DOABUM>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRINCIPAL COMPONENT ANALYSIS; EASTERN-UNITED-STATES; PRECIPITATION CHEMISTRY; CLUSTER-ANALYSIS; SIMILAR METEOROLOGY; DEFINE PERIODS; NORTH-AMERICA; HEIGHT FIELD; OZONE; VARIABILITY;
Keywords:
air-quality basins; Varimax rotational method; cluster analysis; O-3; PM10;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Yu, TY Natl Taiwan Univ, Grad Inst Environm Engn, 71 Chou Shan, Taipei 10764, Taiwan Natl Taiwan Univ 71 Chou Shan Taipei Taiwan 10764 ei 10764, Taiwan
Citazione:
T.Y. Yu e L.F.W. Chang, "Delineation of air-quality basins utilizing multivariate statistical methods in Taiwan", ATMOS ENVIR, 35(18), 2001, pp. 3155-3166

Abstract

This study analyzed time-series data of air pollutants, O-3 and PM10, to determine the division of air-quality basins in Taiwan by employing multivariate statistical methods, Varimax rotational method and cluster analysis. The databases of air pollutants, daily maximum l-h O-3 and daily mean PM10 concentrations, were obtained from the ROC Environmental Protection Administration (ROC EPA) for the period from 1 July 1993 to 30 June 1998. The Varimax rotational method allowed us to delineate five homogenous PM10 subregions that cumulatively accounted for 85.6% of the total variance. The time-series analysis of rotated component scores associated with the PM10 subregions revealed that all divided subregions presented a strong seasonal cycle. Four of five subregions had higher component scores and PM lo concentrationsfrom November to January. One subregion experienced higher values from March to May. The use of Varimax approach and cluster analysis on the O-3 and PM10 confirmed that O-3 was more demonstrative of the air-quality basins inTaiwan. Both the Varimax rotational method and the cluster analysis have specific advantages for the division of air-quality basins. This study also proposes a delineation of five air-duality basins having homogenous O-3 features as an alternative assignment of atmospheric carrying capacity controlregions. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 18:27:06