| Project/Area Number |
16K16190
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Institute for Environmental Sciences (2018)
Japan Agency for Marine-Earth Science and Technology (2016-2017) |
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Principal Investigator |
Oshima Kazuhiro 公益財団法人環境科学技術研究所, 環境影響研究部, 任期付研究員 (40400006)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 北極 / 南極 / 大気水循環 / 気候変動 / 水蒸気輸送 / 極域 / 水循環 / 水蒸気フラックス / 水蒸気量 / 可降水量 |
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| Outline of Final Research Achievements |
We examined atmospheric water cycles in the Arctic and Antarctic regions and their changes under climate change. Our study using meteorological reanalysis data indicated that the amount of water vapor over the Arctic was clearly increasing due to the warming. We found that the water vapor over the Antarctic was gradually decreasing during the past four decades in association with the changes in large-scale atmospheric circulation. While there were no significant long-term changes in total poleward moisture transport into both polar regions, the recent changes in those moisture transports showed regional and seasonal differences, which were partly associated with cyclone activities.
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| Academic Significance and Societal Importance of the Research Achievements |
両極域では，近年の気候変動に伴って大気・海洋・陸域の様々な変化が観測されているが，その一翼を担う水循環に関する研究はあまり調査が進んでいない状況であった。そこで本課題では極域大気水循環を調査した。ここで得られた成果は，最近注目度の高い極域の気候変動に対して，大気水循環の観点から新たな知見を加えるとともに，極域の将来予測へつながる基礎研究になると期待できる。
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