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Korean Meteorological Society (한국기상학회)
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Analysis of Meteorological Characteristics by Fine Dust Classification on the Korean Peninsula, 2015~2021

2015년~2021년 한반도 고농도 미세먼지 사례의 유형분류에 따른 기상학적 특징 분석

  • Jee, Joon-Bum (Research Center for Atmospheric Environment, Hankuk University of Foreign Studies) ;
  • Cho, Chang-Rae (Research Center for Atmospheric Environment, Hankuk University of Foreign Studies) ;
  • Kim, Yoo-Jun (High Impact Weather Research Department, National Institute of Meteorological Sciences) ;
  • Park, Seung-Shik (Department of Environment and Energy Engineering, Chonnam National University)
  • 지준범 (한국외국어대학교 대기환경연구센터) ;
  • 조창래 (한국외국어대학교 대기환경연구센터) ;
  • 김유준 (국립기상과학원 재해기상연구부) ;
  • 박승식 (전남대학교 환경에너지공학과)
  • Received : 2022.03.29
  • Accepted : 2022.06.20
  • Published : 2022.06.30
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Abstract

From 2015 to 2021, high-concentration fine dust episodes with a daily average PM2.5 concentration of 50 ㎍ m-3 or higher were selected and classified into 3 types [long range transport (LRT), mixed (MIX) and Local emission and stagnant (LES)] using synoptic chart and backward trajectory analysis. And relationships between the fine particle data (PM2.5 and PM10 concentration and PM2.5/PM10 ratio) and meteorological data (PBLH, Ta, WS, U-wind, and Rainfall) were analyzed using hourly observation for the classification episodes on the Korean Peninsula and the Seoul metropolitan area (SMA). In LRT, relatively large particles such as dust are usually included, and in LES, fine particle is abundant. In the Korean peninsula, the rainfall was relatively increased centered on the middle and western coasts in MIX and LES. In the SMA, wind speed was rather strong in LRT and weak in LES. In LRT, rainfall was centered in Seoul, and in MIX and LES, rainfall appeared around Seoul. However, when the dust cases were excluded, the difference between the LRT and other types of air quality was decreased, but the meteorological variables (Ta, RH, Pa, PBLH, etc.) were further strengthened. In the case of the Korean Peninsula, it is difficult to find a clear relationship because regional influences (topographical elevation, cities and coasts, etc.) are complexly included in a rather wide area. In the SMA, it is analyzed that the effects of urbanization such as the urban heat island centered on Seoul coincide with the sea and land winds, resulting in a combination of high concentrations and meteorological phenomena.

Keywords

Acknowledgement

본 연구는 2020년도 정부(과학기술정보통신부)의 재원으로 한국연구재단 - 기후변화대응개발사업(NRF-2020M1A2A2083520) 지원을 받아 수행되었습니다.

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