| Project/Area Number |
26281001
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Hokkaido University |
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Principal Investigator |
Yoshikawa Hisayuki 北海道大学, 地球環境科学研究科(研究院), 名誉教授 (60344496)
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| Co-Investigator(Kenkyū-buntansha) |
小杉 如央 気象庁気象研究所, 海洋・地球化学研究部, 研究官 (20553168)
村田 昌彦 国立研究開発法人海洋研究開発機構, 地球環境観測研究開発センター, チームリーダー (60359156)
亀山 宗彦 北海道大学, 地球環境科学研究科(研究院), 准教授 (70510543)
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| Co-Investigator(Renkei-kenkyūsha) |
Ishii Masao 気象庁気象研究所, 海洋・地球化学研究部, 研究室長 (70354553)
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| Research Collaborator |
Sasano Daisuke
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
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| Keywords | 環境分析 / 環境変動 / 北極海 / 揮発性有機化合物 / 海洋炭酸系 / 溶存メタン / 海洋メタン / 揮発性有機分子 / 炭酸系 / 海氷 |
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| Outline of Final Research Achievements |
In the Arctic Ocean, surface area of sea-ice has been decreasing in summer season over a few decades due to the global warming, which could lead to positive or negative feedback to the climate system via variations in air-sea exchange of gases related to the climate. In order to clarify the air-sea exchange of volatile organic carbon (VOC), CH4, and CO2, measurements of VOC, CH4, and CO2 were made on board the R/V Mirai (Japan Agency for Marine-Earth Science and Technology) in the Arctic Ocean during the summer period from FY 2014 to FY2016. In Canada Basin we found the water originated from sea-ice melting (less saline water) plays an important role in reducing the air-sea exchange of gases by forming shallow and strong stratification, while active biological activities exist about 30 m below the surface.
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