This study investigated characteristics of meteorological parameters and ionic components of PM2.5 during Asian dust events on November 28 and 30, 2018 at Busan, Korea. The seasonal occurrence frequencies of Asian dust during 1960∼2019 (60 years) were 81.7% in spring, 12.2% in winter, and 6.1% in autumn. Recently, autumn Asian dust occurrence in Busan has shown an increasing trend. The result of AWS (automatic weather station), surface weather chart, and backward trajectory analyses showed that the first Asian dust of Nov. 28, 2018, in Busan came with rapid speed through inner China and Bohai Bay from Mongolia. The second Asian dust of Nov. 30, 2018, in Busan seems to have resulted from advection and deposition of proximal residual materials. These results indicated that understanding the characteristics of meteorological parameters and ionic components of PM2.5 during Asian dust events could provide insights into establishing a control strategy for urban air quality.

Abstract
1. 서 론
2. 재료 및 방법
3. 결과 및 고찰
    3.1. 부산지역 2018년 28일과 11월 30일 황사의 PM10과PM2.5 농도 특성
    3.2. 부산지역 2018년 28일과 11월 30일 황사의 기상특성
    3.3. 부산지역 2018년 28일과 11월 30일 황사의 PM2.5중 이온성분 특성
4. 결 론
REFERENCES

• 전병일(신라대학교 항공교통관리학과) | Byung-Il Jeon (Department of Air Traffic & Operation Management, Silla University, Busan 46958, Korea) Correspondence author