Observational and numerical study on roles of convective activity in tropical cyclone formation and rapid intensification
Project/Area Number |
22740308
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Single-year Grants |
Research Field |
Meteorology/Physical oceanography/Hydrology
|
Research Institution | Tohoku University |
Principal Investigator |
SAWADA Masahiro 東北大学, 大学院・理学研究科, 助教 (90466524)
|
Project Period (FY) |
2010 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
Keywords | 気象 / 台風 / 減災 / 数値シミュレーション / 急発達 |
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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Report
(3 results)
Research Products
(16 results)