| Project/Area Number |
24710023
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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 | Yokohama National University |
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Principal Investigator |
TANAKA Yoji 横浜国立大学, 都市イノベーション研究院, 研究教員 (30455498)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | global brightening / 一次生産 / 貧酸素水塊 / 閉鎖性内湾 / Global brightening |
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| Research Abstract |
In many parts of the world, annual mean surface solar radiation (SSR) has undergone significant decadal changes; however, its effect on the coastal water environment has not been investigated. This study investigates the effects of changes in the SSR on hypoxia and the primary production of phytoplankton in a eutrophic bay in Japan (Ise Bay), where the annual SSR increased by 13.3% from 1980 to 2010. We numerically simulated the hydrodynamics and ecosystem using a three-dimensional model. With the 10% increase in SSR, the primary production in the bay increased by 2.8%. Similarly, the overall volume of hypoxic water increased, and in August, it increased by 5.8%. These results imply that recent global brightening has the potential to amplify the primary production and hypoxia in a eutrophic bay.
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