Case study of ozone photochemistry in the Seoul metropolitan area during the summer 2003

2003년 여름동안 서울지역에서의 오존의 광화학적 특성에 대한 사례 연구

  • Shon Zang-Ho (Department of Environmental Engineering, Dongeui University)
  • 손장호 (동의대학교 환경공학과)
  • Published : 2005.08.01


This study examines the local ozone photochemistry in the urban air. The photochemical formation and destruction of ozone was modeled using a photochemical box model. For the model prediction of ozone budget, measurements were carried out from an urban monitoring station in Seoul ($37.6^{\circ}N,\;127^{\circ}E$), Korea for intensive sampling time period (Jun. $1\~15$, 2003). Photochemical process is likely to play significant role in higher ozone concentrations during the sampling period. The results of model simulation indicated that photochemical ozone production pathway was the reaction of NO with $HO_2$ while ozone destruction was mainly controlled by a photochemical destruction pathway, a reaction of $H_2O$ with $O(^1D).$ The contribution of NMHCs to formation and destruction of ozone in the urban was significant. This was entirely different from remote marine environment. The rates of net photochemical ozone production ranged from 0.1 to 1.3 ppbv $h^{-1}$ during the study period.


Photostationay state;PCBM;Ozone production;HOx;Seoul


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