| Project/Area Number |
26707025
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
KUWANO-YOSHIDA Akira 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 (90392969)
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| Research Collaborator |
HOSODA Shigeki 国立研究開発法人海洋研究開発機構, 地球環境観測研究開発センター, グループリーダー代理
MIYAZAWA Yasumasa 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, グループリーダー
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥21,840,000 (Direct Cost: ¥16,800,000、Indirect Cost: ¥5,040,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2014: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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| Keywords | 爆弾低気圧 / 大気海洋相互作用 / アルゴフロート / 海洋大循環モデル / 海洋モデル / 海洋鉛直流 / 漂流ブイ / 鉛直流 / 海洋大循環 |
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| Outline of Final Research Achievements |
By using eddy-resolving 34-year hindcast simulation of a quasi-global ocean, we have discovered the deep ocean response to explosive cyclones developing over the Northwestern Pacific Ocean. Under explosive cyclones, a horizontal divergence appears in ocean mixed layer above 60 m depth, upward flow that reaches 2000 m depth and cyclonic circulation that reaches ocean floor of 6000 m depth are induced. The upward flow continues for about one week as an internal wave with near-inertial oscillation. In addition, according to interannual variability of explosive cyclone activity, the amplitude of the vertical motion and the day-scale temperature variations are modified in the deep ocean. To explore the oceanic response to explosive cyclones in the real world, high-frequency temperature and salinity profiles under explosive cyclones in winters in 2015/16 and 2016/17 have been observed using six ARGO floats and four surface drifters.
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