Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Analyzing the Changes in O3 Concentration due to Reduction in Emissions in a Metropolitan Area : A Case Study of Busan during the Summer of 2019

대도시 지역의 배출량 저감에 따른 O3 농도 변화 분석: 부산광역시 2019년 여름 사례

  • Hyeonsik Choe (Division of Earth and Atmospheric Sciences, Pusan National University) ;
  • Wonbae Jeon (Department of Atmospheric Sciences, Pusan National University) ;
  • Dongjin Kim (Division of Earth and Atmospheric Sciences, Pusan National University) ;
  • Chae-Yeong Yang (Department of Atmospheric Sciences, Pusan National University) ;
  • Jeonghyeok Mun (Division of Earth and Atmospheric Sciences, Pusan National University) ;
  • Jaehyeong Park (Division of Earth and Atmospheric Sciences, Pusan National University)
  • 최현식 (부산대학교 지구환경시스템학부) ;
  • 전원배 (부산대학교 대기환경과학과) ;
  • 김동진 (부산대학교 지구환경시스템학부) ;
  • 양채영 (부산대학교 대기환경과학과) ;
  • 문정혁 (부산대학교 지구환경시스템학부) ;
  • 박재형 (부산대학교 지구환경시스템학부)
  • Received : 2023.06.13
  • Accepted : 2023.07.03
  • Published : 2023.07.31
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Abstract

In this study, numerical simulations using community multiscale air quality (CMAQ) were conducted to analyze the change in ozone (O3) concentration due to the reduction in nitrogen oxides (NOx)andvolatile organic compounds (VOCs) emissions in Busan. When the NOx and, VOCs emissions were reduced by 40% and, 31%, respectively, the average O3 concentration increased by 4.24 ppb, with the highest O3 change observed in the central region (4.59 ppb). This was attributed to the decrease in O3 titration by nitric oxide (NO) due to the reduction of NOx emissions in Busan, which is classified as a VOCs-limited area. The distribution of O3 concentration changes was closely related to NOx emissions per area, and inland emissions were highly correlated with daily maximum concentrations and 8-h average O3 concentrations. Contrastingly, the effect of emission reduction depended on the wind direction. This suggests that the emission reduction effects may vary depending on the environmental conditions. Further research is needed to comprehensively analyze the emission reduction effects in Busan.

Keywords

Acknowledgement

이 논문은 2022년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임(No. 2020R1A6A1A03044834)

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