2012 Fiscal Year Final Research Report
Spatiotemporal variability, multi-level structures, and water transport in the tropical climate system
| Project/Area Number |
22540444
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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 | Hokkaido University |
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Principal Investigator |
HORINOUCHI Takeshi 北海道大学, 大学院・地球環境科学研究院, 准教授 (50314266)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 気候 |
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| Research Abstract |
The theory of the Hadley circulation was revisited by using aqua-planet numerical modeling and theoretical examination. It was revealed that a degree of freedom, which is overlooked by the conventional theory, exists in its strength, and that equatorial wave disturbances can act to constrain it. It is shown that fluctuation on synoptic time scales induced by waves including the mixed Rossby-gravity waves exists in the low cloud amount over the equatorial south eastern Pacific. It is also shown that the waves have a relationship with mean precipitation.
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