대기 (Atmosphere)

  • 제30권4호
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  • Pages.391-404
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  • 2020
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  • 1598-3560(pISSN)
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  • 2288-3266(eISSN)
한국기상학회 (Korean Meteorological Society)
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서울의 기상 조건에 따른 미세먼지와 시정의 상관성

The Relationship of Particulate Matter and Visibility Under Different Meteorological Conditions in Seoul, South Korea

  • 김민석 (연세대학교 대기과학과) ;
  • 이서영 (연세대학교 대기과학과) ;
  • 조예슬 (연세대학교 대기과학과) ;
  • 구자호 (연세대학교 대기과학과) ;
  • 염성수 (연세대학교 대기과학과) ;
  • 김준 (연세대학교 대기과학과)
  • Kim, Minseok (Department of Atmospheric Sciences, Yonsei University) ;
  • Lee, Seoyoung (Department of Atmospheric Sciences, Yonsei University) ;
  • Cho, Yeseul (Department of Atmospheric Sciences, Yonsei University) ;
  • Koo, Ja-Ho (Department of Atmospheric Sciences, Yonsei University) ;
  • Yum, Seong Soo (Department of Atmospheric Sciences, Yonsei University) ;
  • Kim, Jhoon (Department of Atmospheric Sciences, Yonsei University)
  • 투고 : 2020.08.27
  • 심사 : 2020.10.20
  • 발행 : 2020.12.31
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초록

To understand the characteristics of the relationship between visibility and particulate matter (PM) in different meteorological conditions, we investigated the contributions of PM and relative humidity (RH) to visibility in Seoul, South Korea. For the period from 2001 to 2018, both PM and RH show descending trends, resulting in a visibility increase. PM has little impact on the hourly variation of visibility, which could be explained more by the RH variability. Meanwhile, the daily change of PM accounts for daily visibility variation. For the monthly variation of visibility, both PM and RH showed similar influence. The correlation coefficients of PM10, PM2.5, and RH with visibility was -0.486, -0.644, and -0.556, respectively, which became higher during the high PM seasons of spring and winter. The correlation coefficient between PM2.5 and visibility was -0.454 for RH higher than 80%, and -0.780 for RH between 40% and 60%. From 2017 to 2018, there were 10 cases of extreme visibility impairment, among which five cases were incurred by high PM pollution, and two cases were by high humidity. Further analysis with PM chemical composition measurements is required to better understand the characteristics of visibility in Seoul.

키워드

과제정보

본 연구는 환경부의 환경정책기반공공기술개발사업(2017000160001)에서 지원받았습니다. 본 저작물은 국립환경과학원에서 작성하여 공공누리 제3유형으로 개방한 대기오염물질 최종확정자료와 기상청에서 작성하여 공공누리 제1유형으로 개방한 종관기상관측자료를 이용하였으며, 해당 저작물은 각각 Airkorea (https://www.airkorea.or.kr/)와 기상자료개방포털(https://data.kma.go.kr/)에서 무료로 다운받으실 수 있습니다.

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