Temporal and spatial variations in surface ozone concentrations in Busan were investigated by using observation data from urban air quality sites during 2001-2016. The annual ozone concentrations showed a significant increasing trend of +0.40 ppb yr-1 in this period, with a more rapid increase of +0.81 ppb yr-1 since 2010. For the monthly analysis, the increase in ozone concentration was the greatest in August (+0.68 ppb yr-1). These ozone trends were due mainly to rising temperature (+0.05℃ yr-1) and weak decreasing precipitation (－6.42 mm yr-1). However, the extreme weather events (heat wave, localized heavy rain, etc.) lead to an increase in short-term variability of ozone since 2010. The relatively low ozone concentrations in the downtown area were caused by high NOx emissions from mobile sources. The increases in ozone concentrations were observed at most of the air quality monitoring sites due to the reductions in anthropogenic emissions of NOx during 2001-2015. However, in the southern coastal area, lower rates of increase in ozone concentrations were observed by –0.10~0.25 ppb yr-1 due to the significant NOx emitted by ships in the Busan port and Busan new port.

Abstract
 1. 서 론
 2. 대상지역 및 자료
 3. 2001~2016년 부산 오존농도 변화추세
  3.1 오존농도의 시간 변화 추세
  3.2 오존농도의 공간 변화 추세
 4. 기상조건 및 배출환경 변화와의 상관관계
  4.1 기상조건 변화와 오존농도 변화추세와의 상관
  4.2 배출환경 변화와 오존농도 변화추세와의 상관
 5. 요약 및 결론
 REFERENCES

• 강윤희(부산대학교 환경연구원) | Yoon-Hee Kang (The Institute of Environmental Studies, Pusan National University)
• 김유근(부산대학교 대기환경과학과) | Yoo-Keun Kim (Department of Atmospheric Sciences, Pusan National University) Corresponding author
• 황미경(부산대학교 환경연구원) | Mi-Kyeong Hwang (The Institute of Environmental Studies, Pusan National University)
• 정주희(부산대학교 환경연구원) | Ju-Hee Jeong (The Institute of Environmental Studies, Pusan National University)
• 김현수(한국전력거래소 수요예측팀) | Hyunsu Kim (Short-term Demand Forecast Team, Korea Power Exchange)
• 강민성(동의대학교 휴먼환경예지연구소) | Min-Seong Kang (Institute of Human Environment and Prognosis, Dong-Eui University)