Characteristics of Ozone Concentration Weekend Effect in Busan Area

부산지역 오존농도의 주말 효과 특성

  • Jeon, Byung-Il (Department of Environmental Engineering, Silla University)
  • 전병일 (신라대학교 환경공학과)
  • Received : 2014.01.06
  • Accepted : 2014.03.17
  • Published : 2014.05.30


This study analyzes the characteristics of ozone weekend effect(OWE) in Busan. $O_3$ concentration on Sunday was over 10% higher than that on weekdays in all areas except for Kwangbokdong, Taejongdae, and Joadong. Such a difference was higher in the industrial area than in the residential area. $O_3$ generation was facilitated by the decrease in $NO_X$ emission on Sunday in VOC-limited regime where the VOC/$NO_X$ ratio is low. Low NO concentration in the Sunday morning decreased inhibition of $O_3$. NO-$O_3$ crossover time on Sunday was shorter than that on weekdays which in turn extended the accumulated duration of $O_3$. Future studies can include whether the entire Busan is VOCS-limited or the coastal area is VOCS-limited while the inland area is $NO_X$-limited.


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