| 倾斜涡度的发展与云南冬季强降水 |
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| 引用本文： | 李英,段旭.倾斜涡度的发展与云南冬季强降水[J].南京气象学院学报,1999,22(4):705-710. |
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| 作者姓名： | 李英 段旭 |
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| 作者单位： | 南京大学大气科学系,南京,210093 |
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| 基金项目： | 中国气象局资助，云南省气象局青年气象科学基金 |
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| 摘 要： | 应用倾斜涡度发展理论，对云南的一次冬季强降水天气进行诊断分析。结果表明：强降水发生在θｅ 陡立密集区内；倾斜涡度发展和条件性对称不稳定是形成强降水的重要因子；大气的弱位势稳定和强斜压性有利于云南冬季强降水的发生。
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| 关 键 词： | 倾斜涡度发展 冬季 强降水 |
SLANTWISE VORTICITY DEVELOPMENT AND SEVERE PRECIPITATION IN WINTER OVER YUNNAN |
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| Li Ying,Duan Xu.SLANTWISE VORTICITY DEVELOPMENT AND SEVERE PRECIPITATION IN WINTER OVER YUNNAN[J].Journal of Nanjing Institute of Meteorology,1999,22(4):705-710. |
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| Authors: | Li Ying Duan Xu |
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| Abstract: | The theory of slantwise vorticity development is used to diagnose a severe winter rainfall and snowfall process over Yunnan.Results show that the very stiff moist isentropes can lead to the development of moist slantwise vorticity and the severe precipitation may occur there;conditionally symmetric instability is another important factor responsible for this severe precipitation;the weak atmospheric stability and strong baroclinicity are favourable to the happening of severe winter precipitation over Yunnan. |
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| Keywords: | slantwise vorticity development winter severe precipitation |
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