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자료유형
학술저널
저자정보
배민아 (아주대학교) 김세기 (아주대학교) 김순태 (아주대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제38권 제4호
발행연도
2022.8
수록면
610 - 623 (14page)
DOI
10.5572/KOSAE.2022.38.4.610

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Since 2019, Korean Ministry of Environment has implemented the 1<SUP>st</SUP> - 3<SUP>rd</SUP> PM<SUB>2.5</SUB> Seasonal Management Plans (SMP) to reduce PM<SUB>2.5</SUB> concentration during high PM<SUB>2.5</SUB> concentration period. In this study, we quantitatively evaluated the major drivers (meteorology, foreign emissions, and domestic emissions) of which changes led to change of PM<SUB>2.5</SUB> concentrations in South Korea during the PM<SUB>2.5</SUB> SMP periods (S1, Dec. 2019 - Mar. 2020; S2, Dec. 2020 - Mar. 2021; S3, Dec. 2021 - Mar. 2022) based on observational data and Community Multiscale Air Quality (CMAQ) simulation results. The nation-wide period mean PM<SUB>2.5</SUB> concentration in S1, S2, and S3 decreased by 8.7, 9.1, and 10.1 μg/m³ compared to that during Dec. 2018 - Mar. 2019. Results show that anthropogenic emission reductions in Northeast Asia decreased the PM<SUB>2.5</SUB> concentration by 5.9, 5.5, and 8.8 μg/m³ respectively during S1 - S3. Note that the effect of the regional emission reduction includes not only domestic emission reduction but also reductions in foreign emission impact. The combined impact of meteorology and foreign emission changes explained 65%, 61% of the total PM<SUB>2.5</SUB> decreases over South Korea and the Seoul Metropolitan Area (SMA) respectively during the S1 - S3. Consequently, domestic emission reductions including governmental air quality management plans (i.e., the PM<SUB>2.5</SUB> SMP) and socioeconomic changes (i.e., COVID-19 outbreak) led to PM<SUB>2.5</SUB> concentration decrease in South Korea by 35% during the periods. Among seventeen provinces in South Korea, the impacts of domestic emission reduction on the PM<SUB>2.5</SUB> concentration decreases were as high as 39% and 56% in the SMA and Chungnam where the major emission sources such as transportation, power generation facilities, and industrial complex locate and where the PM<SUB>2.5</SUB> SMP measures were probably penetrated. It implies that the effects of domestic emission controls were meaningful to lower PM<SUB>2.5</SUB> concentrations during the periods.

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Abstract
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2. 방법론
3. 결과
4. 결론
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