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| 안면도 기후변화감시소에서 관측된 산불 기원 바이오매스 연소 에어로졸의 광흡수 특성: 2023년 4월 사례 연구 | |||||
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| 글쓴이 | 관리자 (IP: *.223.176.122) | 작성일 | 2024-12-20 10:36 | 조회수 | 11,821 |
안면도 기후변화감시소에서 관측된 산불 기원 바이오매스 연소 에어로졸의 광흡수 특성: 2023년 4월 사례 연구 Light-absorption Properties of Fresh Biomass Burning Aerosols Observed at the Anmyeondo Global Atmosphere Watch (GAW) Regional Station: A Case Study in April 2023
Abstract This study examined the optical and physical properties of fresh biomass burning aerosols observed at the Anmyeondo Global Atmospheric Watch (GAW) station in April 2023. The fresh biomass burning aerosols exhibited a significantly higher scattering coefficient (567.54±287.14 Mm-1 at 550 nm), approximately five times greater than the station’s April 2023 average (101.67±145.6 Mm-1). Additionally, these aerosols demonstrated markedly increased light absorption (48.23±24.25 Mm-1 at 520 nm), far exceeding the April 2023 average (7.25±8.58 Mm-1). The biomass burning aerosols showed stronger solar absorption, particularly at shorter wavelengths (AÅE370-950: 2.14), indicating substantial light absorption by brown carbon (BrC) aerosol. Within these aerosols, BrC accounted for 64.5±5.7% of total light absorption at 370 nm, considerably higher than the April 2023 average contribution (20.7±20.9%). The elevated BrC contribution, which was relatively higher compared to those reported from field observations of biomass burning plumes, likely resulted from the short travel distance (17 km) between the fire spot and the observation station. This limited distance probably restricted the aging process (e.g., photobleaching) of the biomass burning aerosols.
Key words Anmyeondo GAW station, Biomass burning, Aerosols, Light absorption, Brown carbon ▶출처 : 한국대기환경학회지 제 40권 (제6호) 614-627, 2024.12 |
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| 파일 | 안면도 기후변화감시소에서 관측된 산불 기원 바이오매스 연소 에어로졸의 광흡수 특성 2023년 4월 사례 연구.pdf(1.3M) | ||||