| Project/Area Number |
22510023
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
HOSODA Shigeki 独立行政法人海洋研究開発機構, 地球環境変動領域, チームリーダー代理 (60399582)
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| Co-Investigator(Renkei-kenkyūsha) |
MASUDA Shuuhei 独立行政法人海洋研究開発機構, 地球環境変動領域, チームリーダー (30358767)
KAWAI Yoshimi 独立行政法人海洋研究開発機構, 地球環境変動領域, チームリーダー (40374897)
TOMITA Hiroyuki 名古屋大学, 地球水循環研究センター, 拠点研究員 (10435844)
SUGA Toshio 東北大学, 理学研究科, 教授 (70211977)
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| Research Collaborator |
HASEGAWA Takuya 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
SATO Kanako 独立行政法人海洋研究開発機構, 地球環境変動領域, 技術主任
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 海洋物理 / 陸水学 / 環境変動 / 気候変動 / 水循環 / 混合層 / 熱帯表層塩分 / Argo / 海洋表層混合層 / Argoフロート / 季節躍層 / 塩分変動 / 北太平洋 / 混合層データセット / 太平洋 / データ同化 |
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| Research Abstract |
Heat penetration process in the North Pacific Ocean and Quasi-decadal (QD) surface salinity variability in the tropical Pacific Ocean were quantitatively investigated using observational data. The signal of QD variability is significantly included in the surface salinity trend. The downward heat penetration from the mixed layer to the subsurface ocean is crucial role for the surface temperature even during summer season, indicating that the properties in the shallow mixed layer are influenced by exchanges from that in the lower layer. Those results are important parts of the research for mechanisms of the global surface salinity change, improving the previous knowledge of the global climate and environment changes.
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