2010 Fiscal Year Final Research Report
Long-term modulations of tropical climate modes and ocean warming
| Project/Area Number |
20340125
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | The University of Tokyo (2009-2010)
Gunma University (2008) |
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Principal Investigator |
YAMAGATA Toshio 東京大学, 大学院・理学系研究科, 教授 (50091400)
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| Co-Investigator(Kenkyū-buntansha) |
TOZUKA Tomoki 東京大学, 大学院・理学系研究科, 准教授 (40376538)
MASUMOTO Yukio 東京大学, 大学院・理学系研究科, 准教授 (60222436)
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| Co-Investigator(Renkei-kenkyūsha) |
KAYANE Hajime 東京大学, 大学院・理学系研究科, 教授 (60192548)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 大気海洋相互作用 |
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| Research Abstract |
Using observational data, model outputs and proxy data, we have shown that the dominant period of the Indian Ocean Dipole(IOD) became shorter from 10 years to 2 years. As a result, the IOD has stronger control over the Indian Ocean compared with El Nino/Southern Oscillation in the recent decades. Also, we have proposed new mechanisms for the Atlantic meridional mode and subtropical dipole modes, and clarified the mechanism of variations in the Seychelles Dome in the tropical Indian Ocean and its influence on the overlying sea surface temperature.
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