| Project/Area Number |
23540519
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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 |
HASEGAWA Takuya 独立行政法人海洋研究開発機構, 地球環境変動領域, 主任研究員 (40466256)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAMA Toru 独立行政法人海洋研究開発機構, 地球環境変動領域, 研究員 (80358770)
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| Co-Investigator(Renkei-kenkyūsha) |
TAGUCHI Bunmei 独立行政法人海洋研究開発機構, 地球シミュレータセンター, 研究員 (80435841)
SEIKI Ayako 独立行政法人海洋研究開発機構, 地球環境変動領域, 研究員 (20435845)
|
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| Research Collaborator |
LUO Jing-jia Centre for Australian Weather and Climate Research, Senior Scientist
WANG Yuqing IPRC/University of Hawaii, Professor
RICHARDS Kelvin IPRC/University of Hawaii, Professor
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | エルニーニョ / 大気海洋相互作用 / 沿岸湧昇 / 気候モデル |
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| Research Abstract |
We conducted numerical model experiments to confirm a hypothesis that coastal upwelling along New Guinea (NG) coast can strengthen westerly wind burst, which is important for trigger of El Nino. Using a high resolution global ocean-atmosphere coupled climate model (SINTEX-F2), we confirmed that El Nino that coast upwelling preceded (NG coastal upwelling preceding type El Nino) was found in 150-year output. Furthermore, we conducted regional atmosphere model (iRAM) experiment in the western Pacific as a case study in boreal winter of 2001/2002, which is just before the 2002/03 El Nino event. The results show contribution of sea surface temperature horizontal gradient due to NG coastal upwelling for the enhancement of westerly wind.
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