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Changes in NOx and O-3 concentrations over a decade at a central urban area of Seoul, Korea

Title
Changes in NOx and O-3 concentrations over a decade at a central urban area of Seoul, Korea
Author
전진용
Keywords
Air quality; NO2; NO; Ozone; Road traffic emissions
Issue Date
2015-07
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ATMOSPHERIC ENVIRONMENT, v. 112, Page. 116-125
Abstract
This study aims to explore trends of NOx (NO + NO2) pollution over ten years (2004-2013) at an urban monitoring station at Yongsan in Seoul, Korea. The mean concentrations (in nmol/mol) of NO, NO2, and O-3 measured over the entire study period were 25.3 +/- 730, 36.9 +/- 1.76, and 17.5 +/- 1.31, respectively. The decadal trend of these pollutants exhibited statistically significant, but contrasting, results with downward NO and NOx trends and upward O-3 trends throughout the study period. Correlation studies and principal component analysis (PCA) explained association of NO and NO2 with traffic related pollutants (CO, PM, and SO) at a statistically significant level while O-3 exhibited patterns correlated with meteorological parameters. The overall results of this study indicate that the decadal trend of NO and NO2 was highly dependent on automotive related pollution, while O-3 concentration was influenced by both the availability of NO and meteorological conditions. (C) 2015 Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S1352231015300352http://hdl.handle.net/20.500.11754/26518
ISSN
1352-2310; 1873-2844
DOI
10.1016/j.atmosenv.2015.04.032
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
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