| Project/Area Number |
15K16119
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | National Institute of Polar Research |
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Principal Investigator |
Goto Daisuke 国立極地研究所, 研究教育系, 助教 (10626386)
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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 |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 全球炭素収支 / 炭素循環 / 大気中アルゴン濃度 / 大気中酸素濃度 / 海洋貯熱量 |
|---|
| Outline of Final Research Achievements |
To improve the uncertainty in the estimation of global carbon uptake based on the atmospheric CO2 and O2 by using the atmospheric Ar that varies with only the change in oceanic heat content, we developed a measurement system for atmospheric Ar. The precision of the system was estimated to be 21 per meg (1 sigma). By analyzing the long-term variations of the atmospheric CO2 and O2 observed at Syowa Station, Antarctica, oceanic and terrestrial biospheric CO2 uptake were estimated to be 2.4 ± 0.8 and 1.6 ± 0.7 GtC/yr, respectively.
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