Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Evaluation of the Effect of Traffic Control Program on the Ambient Air Quality in Seoul Metropolitan Area Using the Lower Level Stability Index of Atmosphere

하층대기의 연직 안정도 지표를 이용한 차량 2부제의 수도권 대기오염도 저감효과 분석

  • Kim C.-H. (Department of Atmospheric Science, Pusan Nutional University) ;
  • Park 1.-S. (Atmospheric Research Division, National Institute of Environmental Research) ;
  • Lee S.-J. (Atmospheric Research Division, National Institute of Environmental Research) ;
  • Kim J.-S. (Atmospheric Research Division, National Institute of Environmental Research) ;
  • Hong Y.-D. (Atmospheric Research Division, National Institute of Environmental Research) ;
  • Han J.-S. (Atmospheric Research Division, National Institute of Environmental Research) ;
  • Jin H.-A. (Atmospheric Research Division, National Institute of Environmental Research)
  • 김철희 (부산대학교 대기과학과) ;
  • 박일수 (국립환경연구원 대기연구부) ;
  • 이석조 (국립환경연구원 대기연구부) ;
  • 김정수 (국립환경연구원 대기연구부) ;
  • 홍유덕 (국립환경연구원 대기연구부) ;
  • 한진석 (국립환경연구원 대기연구부) ;
  • 진형아 (국립환경연구원 대기연구부)
  • Published : 2005.04.01
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Abstract

The effects of Traffic Control Program (TCP) on the ambient urban air quality of SO$_{2}$, NO$_{2}$, O$_{3}$, and PM$_{10}$ were evaluated in Seoul metropolitan area by using the lower atmospheric vertical stability index and daily mean wind speeds. The vertical stability index; temperature lapse rate between 1000 hPa and 850 hPa geopotential height fields, were used to identify daily vertical stability index during the 2002 World Cup period where traffic amount was reportedly reduced to half the number of vehicles. The indicated air quality levels of TCP days were then compared with those of the cases observed with analogous vertical stability during the recent 3 years from 2000 to 2002. The result indicates that the effect of TCP on the primary air pollutants are found to be approximately 39$\%$, 23$\%$ and 20$\%$ lower for SO$_{2}$, NO$_{2}$ and PM$_{10}$, respectively. The secondary air pollutant; ozone, showed relatively smaller decreasing rate (13$\%$) of daily mean concentrations (even increased during the night time). The comparison of daily maximum or peak concentrations reveals that the pronounced decreasing effects of TCP on the ambient air quality for both primary and secondary air pollutants, suggesting that TCP is one of the effective strategies to control peak or higher concentrations for most urban scale air pollutants in and around the Seoul metropolitan area.

Keywords

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