2016 Fiscal Year Final Research Report
Understanding the interaction between abrupt climate change and glacial cycle using earth system modeling
| Project/Area Number |
25241005
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
Greve Ralf 北海道大学, 低温科学研究所, 教授 (90374644)
川村 賢二 国立極地研究所, 研究教育系, 准教授 (90431478)
吉森 正和 北海道大学, 地球環境科学研究科(研究院), 准教授 (20466874)
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| Co-Investigator(Renkei-kenkyūsha) |
HASUMI Hiroyasu 東京大学, 大気海洋研究所, 教授 (40311641)
YOSHIMURA Kei 東京大学, 大気海洋研究所, 准教授 (50376638)
OHKOUCHI Naohiko 国立研究開発法人海洋研究開発機構, 基幹研究領域生物地球化学研究分野, 分野長/上席研究員 (00281832)
OKA Akira 東京大学, 大気海洋研究所, 准教授 (70396943)
OKUNO Jun'ichi 国立極地研究所, 研究教育系, 助教 (00376542)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 氷床 / 氷期間氷期サイクル / 気候変化 / 急激な気候変化 / 大気大循環 / 海洋大循環 / 大気海洋大循環モデル / 氷床モデル |
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| Outline of Final Research Achievements |
We conducted numerical simulations with an ice-sheet model in combination with the general circulation model to investigate the physical mechanisms underpinning the 100,000-year glacial cycles. Our results show that insolation and internal feedbacks between the climate, the ice sheets and the lithosphere-asthenosphere system explain the 100,000-year periodicity.Carbon dioxide is involved, but is not determinative, in the evolution of the 100,000-year glacial cycles. These results are important for deepening the understanding of climate change and verifying the reliability of the ice sheet-climate model used for global warming prediction.
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| Free Research Field |
古気候学、気候力学
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