| Project/Area Number |
25400474
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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 | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
KOMORI Nobumasa 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, 主任技術研究員 (80359223)
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| Co-Investigator(Renkei-kenkyūsha) |
ENOMOTO Takeshi 京都大学, 防災研究所, 准教授 (10358765)
MIYOSHI Takemasa 国立研究開発法人理化学研究所, 計算科学研究機構, チームリーダー (90646209)
YOSHIDA Akira (KUWANO 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)
YAMAZAKI 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 (20633887)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 海洋物理・陸水学 / 気象学 / 大気海洋相互作用 / データ同化 |
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| Outline of Final Research Achievements |
We have constructed a system to assimilate atmospheric observational data into a global coupled atmosphere-ocean model using a ensemble-based method, and conducted two-months of experimental reanalysis. Effects of atmosphere-ocean interaction, such as lead-lag relationship between SST and precipitation, are well reflected in the reanalysis. In addition, the basin-scale structure of surface atmospheric variables over the tropical Pacific is reconstructed from the ensemble correlation in the CGCM-based system but not in the AGCM-based system.
We also derived some basic equations for temporal development of ensemble mean and spread, and got interesting knowledge helpful to interpret the results.
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