Study on the behavior of disturbances in the upper troposphere and the interaction with disturbances on the ground
| Project/Area Number |
19540455
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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 | The University of Tokyo |
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Principal Investigator |
IGA Keita The University of Tokyo, 海洋研究所, 准教授 (60292059)
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| Co-Investigator(Kenkyū-buntansha) |
NIINO Hiroshi 東京大学, 海洋研究所, 教授 (90272525)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 圏界面波動 / 中間規模東進波 / シアー流中の中立波動 / 波の相互作用 / 渦の統計理論 / 渦の混合 |
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| Research Abstract |
We analyzed in detail the behavior of disturbances in the upper troposphere, from the view point of neutral waves in a basic flow with shear. We established the analysis method for such neutral waves, and made clear the features of the waves when weak dissipation is considered. We clarified statistically the distribution of the vortices in the steady state after the disturbances are fully developed. We also investigated the disturbances on the ground developing under the existence of upper disturbances by numerical simulations of a mechanical model, and made clear the kinds of developing disturbances and its mechanism.
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Report
(4 results)
Research Products
(16 results)
