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논문 기본 정보

자료유형
학술저널
저자정보
현지민 (공주대학교) 김맹기 (공주대학교) 김정훈 (공주대학교) 상정 (공주대학교) 이상현 (공주대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제40권 제5호
발행연도
2024.10
수록면
491 - 513 (23page)
DOI
10.5572/KOSAE.2024.40.5.491

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초록· 키워드

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To investigate the synoptic patterns and spatial differences associated with extremely high PM<SUB>2.5</SUB> concentrations (EH), five representative cases lasting more than three days were selected from the central region of South Korea. This study utilized air quality monitoring data from 36 stations, maintained from 2018 to 2022, to analyze EH cases. In this study, days with PM<SUB>2.5</SUB> concentrations above the 90<SUP>th</SUP> percentile were defined as EH days. The central region was divided into five clusters using the K-means clustering method. For the regional analysis of EH cases, a comprehensive analysis was conducted by considering various influencing factors such as planetary boundary height, 10 m wind direction, 10 m wind speed, PM2.5 concentration, geographic location, and topographical characteristics. The five representative EH cases in the central region exhibited anticyclonic anomalies in the upper troposphere over the Korean Peninsula, resulting in a weakened ventilation effect. EH cases can be broadly categorized into three groups: cases of Inflow First Stagnation Later (IFSL), Stagnation First Accumulation Later (SFAL), Stagnation First Inflow Later (SFIL). IFSL cases were associated with migratory anticyclone, and under these synoptic patterns, regional differences of EH day occurred. Although both SFAL and SFIL cases were commonly associated with high pressure stagnation in East Asia and the Korean Peninsula, SFAL cases led to regional differences, while SFIL did not. These results emphasize that regional differences in PM<SUB>2.5</SUB> are caused by variations in the position and intensity of the lower-layer anticyclone due to the upper-layer anticyclone deviation.

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Abstract
1. 서론
2. 자료 및 연구 방법
3. 연구 결과
4. 결과 및 토의
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