2012 Fiscal Year Final Research Report
Observational investigation of surface layer salinity change and the intensification of hydrological cycle in the global ocean
| 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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| 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 |
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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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