Examination of Pollution Trends in Santiago de Chile with Cluster Analysis of PM sub(10) and Ozone Data

Examination of pollution trends in Santiago de Chile with cluster analysis of PM sub(10) and ozone data is presented. The results show that concentration levels vary with the season, with PM sub(10) being higher in winter and O sub(3) in summer. All but one station, show a peak in PM sub(10) at 8:00...

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Bibliographic Details
Published in:Atmospheric environment (1994) 2006-09, Vol.40 (28), p.5464-5464
Main Authors: Gramsch, E, Cereceda-Balic, F, Oyola, P, von Baer, D
Format: Article
Language:English
Online Access:Get full text
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Summary:Examination of pollution trends in Santiago de Chile with cluster analysis of PM sub(10) and ozone data is presented. The results show that concentration levels vary with the season, with PM sub(10) being higher in winter and O sub(3) in summer. All but one station, show a peak in PM sub(10) at 8:00 indicating that during the rush hour there is a strong influence from traffic, however, this influence is not seen during the rest of the day. In winter, the PM sub(10) maximum occurs at 24:00 h in all stations but Las Condes. This maximum is related to decreased wind speed and lower altitude of the inversion layer. The fact that Las Condes station is at a higher altitude than the others and it does not show the PM sub(10) increase at night, suggests that the height of the inversion layer occurs at lower altitude.
ISSN:1352-2310
DOI:10.1016/j.atmosenv.2006.03.062