| 台风区和外围暴雨区的旋转风、散度风动能收支 |
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| 引用本文： | 励申申,寿绍文. 台风区和外围暴雨区的旋转风、散度风动能收支[J]. 大气科学学报, 1997, 20(1): 108-113 |
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| 作者姓名： | 励申申 寿绍文 |
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| 作者单位： | 南京气象学院气象学系, 南京 210044;南京气象学院气象学系, 南京 210044 |
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| 基金项目： | 国家“八五”攻关课题,国家自然科学基金 |
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| 摘 要： | 用完全的散度风(vD)和旋转风(vR)动能收支方程对8116台风和8407台风以及8116台风与其外围暴雨区的关系作了讨论。结果表明:台风区的有效位能通过散度风动能(KD)转换为旋转风动能(KR).台风向区域外部输出动能,在暴雨区上空通过涡度、散度场相互作用的转换机制由KR向KD转换,散度风加大触发对流发展产生暴雨,这可能是台风与其外围暴雨联系的一种能量过程。
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| 关 键 词： | 台风 外围暴雨 动能收支 |
| 收稿时间： | 1995-12-18 |
| 修稿时间： | 1996-09-28 |
DIVERGENT AND ROTATIONAL WIND KINETICENERGY BUDGET INSIDE TYPHOON ANDEXTERNAL RAINFALL AREAS |
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| Li Shenshen and Shou Shaowen. DIVERGENT AND ROTATIONAL WIND KINETICENERGY BUDGET INSIDE TYPHOON ANDEXTERNAL RAINFALL AREAS[J]. Transactions of Atmospheric Sciences, 1997, 20(1): 108-113 |
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| Authors: | Li Shenshen and Shou Shaowen |
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| Affiliation: | Department of Meteorology, NIM, Nanjing 210044;Department of Meteorology, NIM, Nanjing 210044 |
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| Abstract: | Energy relationships were investig ated inside typhoons 8407 and 8116 and between the in-typhoon and external rainfal areas of the latter by using the complete equation of budgets of divergent and rotational wind kinetic energy.Results show that the available potential energy in typhoon is conversed into rotational kinetic energ y(KR)through divergent count erpart(KD). When a typhoon transports the energy out ward,KR is transf orm ed int o KD in t he rainf all area through the mechanism of vorticity-diverg ence interaction making KR transf ormed into KD which,as enhanced,wil trigger convection development leading to rainfall genesis.This may be one of possible mechanisms for rainstorm aplification. |
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| Keywords: | typhoon external rainstorm kinetic energy budget |
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