Yearly Variation and Influencing Factors of Ozone Concentration in the Ambient Air of Seoul

서울시 대기중 오존오염도의 연도별 변화와 그 영향인자 분석: 광화문 지역을 중심으로

  • Lee, Ki-Won (The Institute for Environmental Research, Yonsei University) ;
  • Kwon, Sook-Pyo (The Institute for Environmental Research, Yonsei University) ;
  • Chung, Yong (The Institute for Environmental Research, Yonsei University)
  • 이기원 (연세대학교 환경공해연구소) ;
  • 권숙표 (연세대학교 환경공해연구소) ;
  • 정용 (연세대학교 환경공해연구소)
  • Published : 1993.03.01

Abstract

This study was carried out to find the characteristics of surface ozone concentration data obtained during 1988-1991 by the Korea Ministry of Environment. Seasonal data (spring, summer, autumn and winter) wre obtained in May, August, November and February respectively at Kwanghwamun in Seoul. The pollutants analyzed in this study are $SO_2, TSP, CO, NO, NO_2 and NO_2/NO$. Atmospheric factors such as solar radiation, wind speed, relative humidity, cloud amount and atmospheric temperature are also analyzed. The influence of pollutants and atmospheric factors that affect ozone concentration were analyzed by statistical method. The results are summarized as follows : 1. The ozone concentration varied seasonally. The maximum values were 23 ppb in spring, 33 ppb in summer, 16 ppb in autumn and 13 ppb in winter. So the seasonal ozone value was highest in Summer. 2. Te diurnal concentration of ozone was highest during 2-4 P. M. and was very low in the morning and evening. 3. The maximal correlation coefficients of each season between ozone concentration and the influencing pollutants or atmospheric factors asr as follows ; a. spring, r = 0.44(solar radiation) b. summer, r = -0.59(relative humidity) c. autumn, r = -0.55(relative humidity) d. winter, r = -0.58($NO_2$) 4. The major factor affecting the ozone concentration in spring was solar radiation, Relative humidity was the first affecting factor in summer, autumn and $NO_2$ concentration was dominant in winter.

Keywords

References

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