Quantification of Antaric Bottom Water formation processes based on high-resoolution modeling and direct mooring observations
| Project/Area Number |
25870021
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
High performance computing
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Research Collaborator |
YAMAGISHI Takateru (財)高度情報科学技術研究機構
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | フラジルアイス / 非静力学モデル / 海洋海氷結合モデル / 粒子追跡法 / 南極底層水 / 海洋棚氷相互作用 / 海洋物理 / 数値モデル |
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| Outline of Final Research Achievements |
Although Antarctic Bottom Water formation plays very important roles in the Earth's climate, it has not yet been realistically reproduced by numerical simulations. The present study focuses on the improvement of numerical model code by implementing a Lagrangian particle tracking system built-into a non-hydrostatic ocean model. Using this Eulerian-Lagrangian hybrid approach, we develop a new coupled sea ice-ocean model that explicitly deals with frazil ice as Lagrangian particles. It successfully simulated small scale sea ice formation processes in a coastal polynya. We also develop a model that explicitly simulates suspended sediments and their effects on the apparent density of seawater. The newly developed non-hydrostatic ocean model with a built-in Lagrangian particle tracking system has many potential applications.
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Report
(4 results)
Research Products
(30 results)
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[Presentation] Formation and Variability of Antarctic Bottom Water off Cape Darnley: the Fourth Antarctic Bottom Water2016
Author(s)
Ohshima, K. I., Nakayama, Y., Fukamachi, Y., Matsumura, Y., Nihashi, S., Tamura, T., Kitade, T., Hirano, D. and Aoki, S.
Organizer
2016 AGU Ocean Science Meeting
Place of Presentation
ニューオーリンズ（アメリカ合衆国）
Year and Date
2016-02-25
Related Report
Int'l Joint Research
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