| 季风槽对热带风暴“浪卡”暴雨增幅的影响 |
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| 引用本文： | 管勇,胡丽华,梁敏妍,杨群娜.季风槽对热带风暴“浪卡”暴雨增幅的影响[J].广东气象,2009,31(6):10-14. |
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| 作者姓名： | 管勇 胡丽华 梁敏妍 杨群娜 |
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| 作者单位： | 1. 江门市气象局,广东江门,529000
2. 潮州市气象局,广东潮州,521000 |
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| 摘 要： | 利用常规观测资料、NCEP4次／d的1°×1°FNL全球再分析资料以及向上长波辐射通量等资料，分析热带风暴“浪卡”造成广东暴雨的形成机理、降水时空分布等特点，揭示季风槽对这次暴雨降水过程的增幅影响。源源不断的水汽、大气层结的不稳定、强盛的垂直上升运动，对热带风暴“浪卡”环流直接引发的暴雨，和季风槽北抬的暴雨发生，提供了很好的物理条件。
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| 关 键 词： | 天气学 暴雨增幅 季风槽 热带风暴“浪卡” 江门市 |
Enhancement of Rainstorm Associated with Tropical Storm Nangka Influenced by the Monsoon Trough of South China Sea |
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| GUAN Yong,HU Li-hua,LIANG Min-yan,YANG Qun-na.Enhancement of Rainstorm Associated with Tropical Storm Nangka Influenced by the Monsoon Trough of South China Sea[J].Journal of Guangdong Meteorology,2009,31(6):10-14. |
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| Authors: | GUAN Yong HU Li-hua LIANG Min-yan YANG Qun-na |
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| Institution: | GUAN Yong, HU Li - hua, LIANG Min - yan, YANG Qun - na(1. Jiangmen Meteorological Bureau, Jiangmen 529000, China;2. Chaozhou Meteorological Bureau, Chaozhou 521000, China) |
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| Abstract: | The conventional surface observations, NCAR/NCEP reanalysis data and upward long -wave radiation flux are used to investigate the mechanism of rainstorm associated with tropical storm Nangka, the spatial and temporal distribution characteristics of the rainstorm and the strong enhancement of precipitation by the monsoon trough. It is demonstrated that a-bundant water vapor, unstable stratification and strong ascending motion constituted a favorable physical environment for the rainstorm caused by the tropical storm Nangka and enhanced by the northward shift of the monsoon trough. |
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| Keywords: | synoptic meteorology enhancement of rainstorm monsoon trough tropical storm Nangka Jiangmen |
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