2010 Fiscal Year Final Research Report
Dynamics of large-scale finite-amplitude unstable mode in the tropical troposphere, and its influence to the predictability
| Project/Area Number |
20540422
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Kyoto University |
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Principal Investigator |
MUKOUGAWA Hitoshi Kyoto University, 防災研究所, 教授 (20261349)
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| Research Collaborator |
SATO Hitoshi 気象庁, 地球環境・海洋部, 技官
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| Project Period (FY) |
2008 – 2010
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| Keywords | 予測可能性 / 大気運動 / 熱帯 |
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| Research Abstract |
The predictability of circulation anomalies in the tropics associated with active convection has not been adequately assessed in previous studies. Hence, by the use of an ensemble prediction system of the Japan Meteorological Agency, we make thorough analysis on the evolution of finite-amplitude tropical unstable modes which are necessary to assess the predictability of the tropical atmosphere, and reveal their dynamical properties. We also evaluate the influence of tropical circulation anomalies to the predictability of extratropical atmospheric circulations.
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