Isentropic analysis of the formation mechanism of a barrier jet in the Japan Sea
| Project/Area Number |
26400461
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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 | Hirosaki University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
Iwasaki Toshiki 東北大学, 大学院理学研究科, 教授 (80302074)
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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 |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 海上風 / 衛星観測 / 気象シミュレーション / ヤマセ / 北太平洋亜寒帯 / 日本海 / 合成開口レーダ |
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| Outline of Final Research Achievements |
This study investigates the climatology of low-level cool air over the North Pacific in summer and the formation mechanism of a barrier jet in the Japan Sea by the isentropic analysis. Climatological analyses show that the cool air covers most of the subarctic ocean, with the amount decreasing equatorward from the polar region. The case study shows that the origin of the cool air contributive to the formation of the barrier jet in the Japan Sea is the low-level cool air in the Okhotsk Sea and the subarctic North Pacific. The cool air in the Japan Sea is supplied by a number of gap outflows through the terrestrial gaps in northern Japan and Sakhalin from the Okhotsk Sea and the subarctic North Pacific toward the Japan Sea and is trapped along the coastal region of the Eurasian continent, forming a barrier jet.
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Report
(4 results)
Research Products
(4 results)
