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http://dx.doi.org/10.5572/KOSAE.2007.23.3.297

Modeling of the Air Pollutant Recirculation using the MM5-CAMx on Ozone Episode in Greater Seoul Area during June, 2004  

Kim, Yoo-Keun (Department of Atmospheric Sciences, Pusan National University)
Oh, In-Bo (Institute for Multi-dimensional Air Quality Studies, University of Houston)
Kang, Yoon-Hee (Department of Atmospheric Sciences, Pusan National University)
Hwang, Mi-Kyoung (Department of Atmospheric Sciences, Pusan National University)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.23, no.3, 2007 , pp. 297-310 More about this Journal
Abstract
Recent evidence has demonstrated that the pollutant recirculation can play an important role in leading to high ozone $(O_3)$ concentrations. In this study, the MM5-CAMx air quality modeling system was applied to simulate the pollutant recirculation and identify the transport of pollution during the high $O_3$ event (the maximum $O_3$ of 195 ppb) observed in the Greater Seoul Area (GSA) on $1{\sim}4$ June in 2004. The results showed a weak northeasterly synoptic wind during the night and early morning moved the air parcels containing the locally emitted urban pollution to the coast, which contributed to enhance $O_3$ formation in the southwest part of the GSA. As the sea breeze developed and started to penetrate inland in the late afternoon, the rapid build-up of $O_3$ concentration was found in the southwest coastal area due to the recirculation of the polluted air loaded with high level $O_3$. The simulated backward trajectories and observations at coastal sites confirmed the recirculation of pollutant with the late sea breeze is the dominant factor affecting the occurrence of high $O_3$ concentrations in the southwestern GSA.
Keywords
Ozone; MM5-CAMx; Sea breeze; Recirculation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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