2017 Fiscal Year Final Research Report
Re-consideration on the atmospheric circulation on an aquaplanet: toward the proposal of a new model intercomparison, APE2
| Project/Area Number |
26400469
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
石渡 正樹 北海道大学, 理学研究院, 准教授 (90271692)
大淵 済 国立研究開発法人海洋研究開発機構, その他, 研究員 (30359228)
高谷 康太郎 京都産業大学, 理学部, 准教授 (60392966)
山崎 哲 国立研究開発法人海洋研究開発機構, アプリケーションラボ, 研究員 (20633887)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | 大気大循環 / 水惑星モデル比較実験 / 大気力学 / 太陽系外惑星 / 気候力学 / ウォーカー循環 / ロスビー波 / 大気大循環モデル |
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| Outline of Final Research Achievements |
Numerical experiments using atmospheric general circulation models are conducted with “Aquaplanet” lower boundary conditions where whole of the earth’s surface is covered with ocean. Main findings are as follows. First, a westward propagating large scale organization of precipitation with north-south "zigzag" structure is newly identified, in addition to the well known eastward propagating structure. Second, the structure of 'Walker circulation’, a global stationary circulation feature forced by the anomaly of sea surface temperature, is highly sensitive to the average north-south surface temperature difference of the ocean. Sensitivity of both results to the model specification including physical parameterizations and spatial resolution promotes a new international aquaplanet general circulation model intercomparison project, APE2.
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| Free Research Field |
地球惑星流体力学
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