| Project/Area Number |
24740322
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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
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| Research Institution | Tomakomai National College of Technology |
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Principal Investigator |
NIHASHI Sohey 苫小牧工業高等専門学校, その他部局等, 准教授 (50396321)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 海氷 / 熱塩フラックス / 海氷生産量 / 海氷厚 / 沿岸ポリニヤ / 南極海 / 北極海 / オホーツク海 |
|---|
| Outline of Final Research Achievements |
Thin ice thickness algorithms for AMSR-E were developed in the Arctic and Antarctic Oceans, Sea of Okhotsk, and Japan Sea. By using the created ice thickness, ice production was estimated based on heat flux calculation. In the Sea of Okhotsk, a heat and salt flux dataset is created. The dataset is based on a heat flux calculation using ice concentration, thickness, and drift speed from satellite observations. The salt flux calculation considers both salt supplied to the ocean from ice production and freshwater supplied when the ice melts. The spatial distribution of the annual fluxes shows a distinct contrast between north and south: significant ocean cooling with salt supply is shown in the northern coastal polynya region, while ocean heating with freshwater supply is shown in the south. This contrast suggests a transport of freshwater and negative heat by ice advection. The dataset created in this study will be useful for the validation and boundary conditions of modeling studies.
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