2023 Fiscal Year Final Research Report
Analysis of the hygroscopicity of European boreal forest aerosol toward a better understanding of the interactions among vegetation, aerosol, and climate
| Project/Area Number |
19KK0265
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| Research Category |
Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 63:Environmental analyses and evaluation and related fields
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
大畑 祥 名古屋大学, 高等研究院(宇宙), 助教 (70796250)
松井 仁志 名古屋大学, 環境学研究科, 准教授 (50549508)
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| Project Period (FY) |
2019-10-07 – 2024-03-31
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| Keywords | 有機エアロゾル / 北方林 / 吸湿性 |
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| Outline of Final Research Achievements |
Based on the offline analysis of an aerosol mass spectrometer for the extracts of aerosol samples collected in Hyytiala Forest Station, Finland in respective seasons, the atmospheric concentrations and chemical structural characteristics of organic fractions were obtained. Further, based on the hygroscopic growth measurement of the water extracts from the samples, their hygroscopicity parameter were obtained and the strong influence of the relative abundances of organics and sulfate to the hygroscopicity was confirmed. Aerosol samples collected in other sites were also studied; for the water-soluble component of urban aerosols the relationship of the concentrations of ammonium sulfate and water-soluble organics with the surface tension was obtained. Characterization of atmospheric aerosol over a forest in Hokkaido was performed in collaboration with other projects.
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| Free Research Field |
大気化学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で得られた知見や今後の更なる解析で期待される知見は、北方林において植生から大気に放出されるガスから生成するエアロゾル（微粒子）が気候に影響を及ぼし、また逆に気候が植生に影響を及ぼすフィードバックの仕組みを理解する上で基礎となる知識を与えるものである。
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