Estimating Influence of Local and Neighborhood Emissions on Ozone Concentrations over the Kwang-Yang Bay based on Air Quality Simulations for a 2010 June Episode

대기질 모사를 통한 인접지역 배출량이 광양만 오존농도에 미치는 영향분석 - 2010년 6월 사례를 중심으로

Kim, Soon-Tae;Lee, Chong-Bum

  • Received : 2011.07.06
  • Accepted : 2011.08.31
  • Published : 2011.10.31


Simulations of CMAQ with the High-order Decoupled Direct Method (HDDM) for a 2010 June episode are applied to estimate the influence of local and neighborhood emissions on ozone concentrations in the Kwang-Yang Bay (KYB) area. In order to examine ozone response to reductions in $NO_x$ and VOC emissions from KYB and Gyeongsang, ozone isopleths are generated with the first and second-order sensitivity coefficients from HDDM simulations at three sites; Taein, Samil, and Gwangmoo. Simulations show that reduction in KYB $NO_x$ may increase ozone over the sites. On the contrary, $NO_x$ reduction from Gyeongsang may decrease ozone at the sites when transport of ozone and its precursors from upwind Gyeongsang is potentially high. However, VOC reductions from KYB and Gyeongsang are favorable to lower ozone over KYB. The study implies that emission reductions for both local and neighboring areas are likely more effective to bring KYB to ozone attainment.


Kwang-Yang Bay;Ozone;Local and neighborhood emissions;Air quality simulation;HDDM


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Grant : 고농도 오존발생 원인 규명을 위한 정밀조사(II)

Supported by : 국립환경과학원