Comparison of ozone pollution levels at various sites in Seoul, a megacity in Northeast Asia
- Authors
- Iqbal, Mohammad Asif; Kim, Ki-Hyun; Shon, Zang-Ho; Sohn, Jong-Ryeul; Jeon, Eui-Chan; Kim, Yoon-Shin; Oh, Jong-Min
- Issue Date
- 1-3월-2014
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Ozone level; Seoul; Trend; Fossil fuel; Solar radiation (SR)
- Citation
- ATMOSPHERIC RESEARCH, v.138, pp.330 - 345
- Indexed
- SCIE
SCOPUS
- Journal Title
- ATMOSPHERIC RESEARCH
- Volume
- 138
- Start Page
- 330
- End Page
- 345
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/99044
- DOI
- 10.1016/j.atmosres.2013.12.003
- ISSN
- 0169-8095
- Abstract
- Concentrations of ozone were continuously measured at four urban monitoring sites (Gu Ro (G); No Won (N); Song Pa (S); and Yong San (Y)) in Seoul, Korea from 2009 to 2011. The annual mean concentrations of ozone (in ppb) at these sites were found on the order of N (21.8 +/- 19.3) > S (21.4 +/- 20.14) > G (20.9 +/- 18.0) > Y (18.8 +/- 17.4). During peak hours (12-6 pm), the ozone concentrations were significantly higher (75, 69, 67, and 64% at site S, Y, N, and G, respectively) than overall 24 hour mean values. Seasonal variations of ozone have quite similar patterns at every site with systematic increases during spring (March-May) and summer (June-August) with the summer daytime mean (12-6 pm) values of 40.7 (site Y)-49.3 ppb (site S). The concentrations of ozone exhibited strong inverse correlations with other criteria pollutants (e.g., oxides of nitrogen and carbon monoxide), while a significant positive correlation was observed with some meteorological parameters (e.g., ultraviolet ray and solar radiation). Evidence collected in this study confirm that the spatio-temporal distribution of ozone in the study areas should be affected by the anthropogenic sources (e.g., vehicles, residential, and industrial sources) in concert with such well-known variables as the NOx-VOC chemistry and a number of natural parameters (e.g., wind speed, geographic position, and solar radiation). (C) 2013 Elsevier B.V. All rights reserved.
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