TY - JOUR
T1 - Comparison of ozone pollution levels at various sites in Seoul, a megacity in Northeast Asia
AU - Iqbal, Mohammad Asif
AU - Kim, Ki Hyun
AU - Shon, Zang Ho
AU - Sohn, Jong Ryeul
AU - Jeon, Eui Chan
AU - Kim, Yoon Shin
AU - Oh, Jong Min
N1 - Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (grant number 2013004624 ). The third author (JRS) also gratefully acknowledges the support made by KOFST ( 122S-5-3-0431 ). The authors also acknowledge the Human Resources Development program (No. 20094010200030 ) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government Ministry of Trade, Industry and Energy .
PY - 2014/3/1
Y1 - 2014/3/1
N2 - 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 (12-6pm), the ozone concentrations were significantly higher (75, 69, 67, and 64% at site S, Y, N, and G, respectively) than overall 24hour 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 (12-6pm) values of 40.7 (site Y)-49.3ppb (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).
AB - 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 (12-6pm), the ozone concentrations were significantly higher (75, 69, 67, and 64% at site S, Y, N, and G, respectively) than overall 24hour 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 (12-6pm) values of 40.7 (site Y)-49.3ppb (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).
KW - Fossil fuel
KW - Ozone level
KW - Seoul
KW - Solar radiation (SR)
KW - Trend
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U2 - 10.1016/j.atmosres.2013.12.003
DO - 10.1016/j.atmosres.2013.12.003
M3 - Article
AN - SCOPUS:84891135091
VL - 138
SP - 330
EP - 345
JO - Atmospheric Research
JF - Atmospheric Research
SN - 0169-8095
ER -