A positive feedback process between tropical cyclone and moisture conveyor belt
| Project/Area Number |
15K13569
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
YOSHIMURA Kei 東京大学, 大気海洋研究所, 准教授 (50376638)
SHINODA Taro 名古屋大学, 地球水循環センター, 准教授 (50335022)
KATO Masaya 名古屋大学, 地球水循環センター, 研究員 (00648272)
KAWANO Tetsuya 九州大学, 大学院理学研究院, 助教 (30291511)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 台風 / 熱帯低気圧 / モンスーン / 水蒸気輸送 / 水蒸気コンベアベルト |
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| Outline of Final Research Achievements |
To construct a new conceptual tropical cyclone (TC) model from a macroscopic view, we have examined a positive feedback process between the intensity of a prototypical TC (i.e., Typhoon Man-yi 2007) and the moisture conveyor belt (MCB) that has been suggested by previous researches. We performed SST sensitivity experiments, using a cloud resolving regional model with a spatial resolution of 0.05 degree longitude by 0.05 degree latitude, and made forward and backward trajectory analyses for Man-yi to evaluate how air parcels related to latent heat release intrude into the TC inner core region through the MCB and to verify whether such a feedback process operates efficiently. We also conducted a non-existence TC run to confirm that a TC can trigger the MCB formation under the background monsoon westerlies and investigated another TC (Halong 2002) to validate that the TC-MCB feedback is applicable to other western North Pacific TCs.
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Report
(3 results)
Research Products
(17 results)
