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자료유형
학술저널
저자정보
강미선 (국립기상과학원) 이우정 (국립기상과학원)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제39권 제3호
발행연도
2023.6
수록면
381 - 399 (19page)
DOI
10.5572/KOSAE.2023.39.3.381

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The Korea Meteorological Administration (KMA) is operating Asian Dust Aerosol Model 3 (ADAM3) to monitor and forecast Asian dust events. An unusual Asian dust event of high concentrations in winter was observed from December 12 to 14, 2022 in South Korea. In this study, the characteristics of the Asian dust event were analyzed using various observational data, and the performance analysis of ADAM3 coupled with the Unified Model, the operational weather forecasting model at KMA, was conducted with satellite and surface PM concentrations observed during the Asian dust event period. The lower 500 hPa geopotential height and higher 2 m air temperature compared to normal years (1991~2020) in the source region were a proper condition for dust particles to be well intruded from the surface into the air above on December 11, 2022. Hourly mean PM<SUB>10</SUB> concentration was observed at 2,714 μg m<SUP>-3</SUP> with a strong surface wind speed of 9 m s<SUP>-1</SUP> or more at Nomgon of the source region. Asian dust was transported to the Bohai bay in China by the northwesterly, and then flowed into the Korean peninsula by the westerly on December 12, 2022, at 0730 KST. The hourly mean PM<SUB>10</SUB> concentration observed in Seoul at 11 KST on the 13th was 480 μg m<SUP>-3</SUP>, and the volume concentration of coarse particles from 2 to 6 μm was predominant. ADAM3 for each initial time simulated the spatial distribution of Asian dust generated from the Gobi Desert and the Inner Mongolia Plateau and Asian dust moving to the Korean Peninsula similarly to GK2A RGB dust image. In the comparison of observed and simulated PM10 concentrations, the start and end times of the dust events were similar. In the source of Asian dust and in Korea, RMSE was 137.76 μg m<SUP>-3</SUP>, 35.95 μg m<SUP>-3</SUP>, respectively, and MBE was -16.50 μg m<SUP>-3</SUP> and -25.89 μg m<SUP>-3</SUP>, respectively. These results are expected to be used as basic data for accurate Asian dust forecasting when similar cases of Asian dust will occur in the source region and South Korea.

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Abstract
1. 서론
2. 자료 및 방법
3. 결과
4. 요약 및 결론
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