Development of a method for measuring complex refractive index of black carbon aerosols
| Project/Area Number |
15H05465
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Moteki Nobuhiro 東京大学, 大学院理学系研究科(理学部), 助教 (20507818)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥21,580,000 (Direct Cost: ¥16,600,000、Indirect Cost: ¥4,980,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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| Keywords | 大気化学 / 放射強制力 / エアロゾル / 地球温暖化 / 大気放射 / 大気環境 / 気候変動 / 大気物理学 / 光散乱 |
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| Outline of Final Research Achievements |
In the initial schedule, we plan to simultaneously measure the scattering and absorption cross sections of black carbon particles using the single-particle light scattering method and the single-particle laser incandescence method to derive the complex refractive index of black carbon aerosols. In the course of preliminary experiments, we discovered that anthropogenic iron oxide particles generated from automobiles and steel works can be detected separately from black carbon and iron oxide particles of natural origin, and established a method. Using global observation data and numerical simulation of anthropogenic iron oxide aerosols, we evaluated global concentration and radiative forcing for the first time. In addition, a single particle dissipation method, which is a highly sensitive measurement principle for the imaginary part of the complex refractive index, was devised anew and a theoretical model and experimental system of the measurement were completed.
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Report
(4 results)
Research Products
(22 results)
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[Journal Article] New particle formation leads to cloud dimming2018
Author(s)
Sullivan R. C., P. Crippa, H. Matsui, L. R. Leung, C. Zhao, A. Thota, and S. C. Pryor
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Journal Title
Nature Partner Journals: Climate and Atmospheric Science
Volume: 印刷中
Issue: 1
Pages: 1593-1593
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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