| Project/Area Number |
18K03740
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 17020:Atmospheric and hydrospheric sciences-related
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| Research Institution | Tokyo Gakugei University |
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Principal Investigator |
NAKANO Yukio 東京学芸大学, 教育学部, 准教授 (50364112)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | ヨウ素循環 / 地球温暖化 / エアロゾル / 高感度分光法 / 大気化学 |
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| Outline of Final Research Achievements |
Once iodine molecules released into the atmosphere which causes the formation of iodine aerosols when they are. The photolysis of iodide ions in the ocean is considered as a candidate as a new process for the formation of iodine molecules in the atmosphere, However, the effect of this generation process on the atmosphere has not yet been evaluated. In this study, the dependence of each parameter on ocean conditions such as hydrogen ion index, dissolved oxygen amount, iodide ion concentration on the iodine molecules generation by this generation process study was investigated using a high-sensitivity spectrometric method. Using the results, we conducted model calculations and evaluated the impact of this generation process on the actual atmosphere.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で対象とした海洋中のヨウ化物イオンの光分解過程は，大気中のヨウ素化合物の生成過程の一つである。この生成過程はヨウ素エアロゾル生成に大きく可能性があるが、今までその影響力の正確な評価はできていなかった。本研究の結果、この生成過程が大気中のヨウ素化合物の生成源として重要な役割を果たしていることが新たにわかった。大気中のヨウ素化合物はヨウ素エアロゾル生成を引き起こし、地球温暖化に影響を与える要因である。そのため、本研究成果は地球温暖化の将来予想の高精度化にも貢献するものである。
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