대기 (Atmosphere)

  • 제34권3호
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  • Pages.233-255
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  • 2024
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  • 1598-3560(pISSN)
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  • 2288-3266(eISSN)
한국기상학회 (Korean Meteorological Society)
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국내 AERONET 관측 현황과 장기간 에어로졸 광학 깊이의 변화 및 에어로졸 분포 분석

Current Status of AERONET Observations in South Korea and Analysis of Long-Term Changes in Aerosol Optical Depth and Aerosol Distribution

  • 장성현 (부산대학교 BK21 지구환경시스템 교육연구단, 지구환경시스템학부 대기과학전공) ;
  • 엄준식 (부산대학교 BK21 지구환경시스템 교육연구단, 지구환경시스템학부 대기과학전공)
  • Seonghyeon Jang (BK21 School of Earth and Environment Systems, Division of Earth Environmental System, Department of Atmospheric Sciences, Pusan National University) ;
  • Junshik Um (BK21 School of Earth and Environment Systems, Division of Earth Environmental System, Department of Atmospheric Sciences, Pusan National University)
  • 투고 : 2024.05.14
  • 심사 : 2024.06.29
  • 발행 : 2024.08.31
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⟨ 이전 논문 다음 논문 ⟩

초록

This study analyzed the distribution of Aerosol Robotic Network (AERONET) Version 3 Level 2.0 data, spanning over two decades, across South Korea and its six administrative regions (Seoul metropolitan area, Chungcheong, Jeolla, Gangwon, Gyeongsang, and Jeju). The research assessed long-term trends in aerosol optical depth (AOD) and mass concentration of particulate matter (i.e., PM10 and PM2.5), using data from the AERONET direct sun product and AirKorea, respectively. Additionally, eight aerosol types were identified using the scattering Ångström exponent and absorption Ångström exponent from the AERONET inversion product. The study further explored their domestic and regional distributions. Findings indicated that AERONET data were predominantly concentrated in the western regions of South Korea, including the Seoul metropolitan area, Chungcheong, and Jeolla, with a higher frequency of data in spring, thus demonstrating spatial and temporal heterogeneity. The annual average AOD exhibited a declining trend of -0.006 yr-1. Similarly, PM10 and PM2.5 mass concentrations decreased by -1.324 ㎍ m-3 yr-1 and -1.335 ㎍ m-3 yr-1, respectively. These trends in AOD and PM10 (PM2.5) demonstrated positive correlations, with correlation coefficients of 0.674 (0.753) and statistically significant low p-values of 0.00058 (0.03), respectively. The analysis also revealed that aerosols in South Korea predominantly consisted of black carbon (BC) or BC-mixed types (84.09%), with a notable presence of smaller, less absorbent aerosol types (13.11%).

키워드

과제정보

이 과제는 부산대학교 기본연구지원사업(2년)에 의하여 연구되었습니다. 본 연구에 사용된 국내 AERONET 관측 지점의 선포토미터 자료를 제공해주신 모든 책임 연구자분들과 관리자분들께 감사드립니다. 본 논문의 개선을 위해 좋은 의견을 제시해 주신 두 분의 심사위원께 감사를 드립니다.

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