2011 Fiscal Year Final Research Report
Observational and numerical study on roles of convective activity in tropical cyclone formation and rapid intensification
| Project/Area Number |
22740308
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Tohoku University |
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Principal Investigator |
SAWADA Masahiro 東北大学, 大学院・理学研究科, 助教 (90466524)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 気象 / 台風 |
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| Research Abstract |
It is found strong low-level cyclonic circulation is formed before rapid intensification of tropical cyclone from reanalysis data. Through numerical simulations on periodic variation of tropical cyclone precipitation, we clarify the periodic behavior is caused by rainband formation and propagation, which leads to the intensity and secondary circulation variation. It is indicated higher resolution simulation is key factor for reproducing rapid intensification.
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