2009 Fiscal Year Final Research Report
Observational study of atmospheric aerosol and gas variations over Asia
| Project/Area Number |
20840052
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| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
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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 | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
TAKASHIMA Hisahiro Japan Agency for Marine-Earth Science and Technology, 地球環境変動領域, ポストドクトラル研究員 (20469620)
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| Project Period (FY) |
2008 – 2009
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| Keywords | エアロゾル / 二酸化窒素 / 越境大気汚染 |
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| Research Abstract |
Atmospheric aerosol and NO_2 variations at Okinawa Island in Japan were investigated using Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements, focusing primarily on transboundary air pollution from China. The results showed that NO_2 enhancement at Okinawa during northern winter-spring was controlled by rapid air mass transport from China. A new cloud-screening method using MAX-DOAS data based on the physical properties of clouds was developed to evaluate aerosol variations. Comparison with satellite measurements as well as ground based measurements were also performed.
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