2012 Fiscal Year Final Research Report
Impact of ocean optical properties on the Pacific decadal variation
| Project/Area Number |
22540455
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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 |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Japan, Meteorological Research Institute |
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Principal Investigator |
YAMANAKA Goro 気象庁気象研究所, 海洋研究部, 第1研究室長 (60442745)
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| Co-Investigator(Renkei-kenkyūsha) |
HIRABARA Mikitoshi 気象研究所, 海洋研究部, 主任研究官 (70354545)
TSUJINO Hiroyuki 気象研究所, 海洋研究部, 主任研究官 (50343893)
NAKANO Hideyuki 気象研究所, 海洋研究部, 主任研究官 (60370334)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 海洋物理 / 大気海洋相互作用 / 物質循環 |
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| Research Abstract |
We implemented a new ocean radiant heating scheme that enables us to take into account the effect of the varying solar angle and the local heating by chlorophyll-a concentration into three models; an ocean general circulation model, an ocean biogeochemical model, and a coupled atmosphere-ocean model, to examine the impact of the ocean optical properties on the Pacific decadal variation. The secondary dynamical response to a change in water optical properties induced a significant impact on the amplitude of the Pacific decadal variation, as well as the mean structure of the tropical atmosphere-ocean. These results indicate that care about the treatment of water optical properties in ocean models is indispensable for climate modeling
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