| 滇中暴雨的湿位涡诊断分析 |
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| 引用本文： | 段旭,李英.滇中暴雨的湿位涡诊断分析[J].高原气象,2000,19(2):253-259. |
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| 作者姓名： | 段旭 李英 |
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| 作者单位： | 云南省气象台,云南省昆明市,650034 |
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| 摘 要： | 应用湿位涡理论，对１９９８年６月滇中地区罕见的６场暴雨过程进行了诊断分析。结果表明：θｅ面陡立且南侧暖湿气流活跃，易导致湿斜压涡度发展，形成θｅ陡峭密集区，密集区内暴雨容易发生；湿空气对流活动层仅能达到５００ｈＰａ至６００ｈＰａ之间，若对流层低层ＭＰＶ１〈０，同时ＭＰＶ２〉０，易产生暴雨。
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| 关 键 词： | 湿位涡 倾斜涡度发展 暴雨 诊断分析 |
| 修稿时间： | 1998-10-12 |
DIAGNOSTIC ANALYSIS OF MOIST POTENTIAL VORTICITY FOR HEAVY RAIN IN MIDDLE YUNNAN |
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| DUAN Xu,LI Ying.DIAGNOSTIC ANALYSIS OF MOIST POTENTIAL VORTICITY FOR HEAVY RAIN IN MIDDLE YUNNAN[J].Plateau Meteorology,2000,19(2):253-259. |
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| Authors: | DUAN Xu LI Ying |
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| Abstract: | By using the concept of moist potential vorticity, the characteristics of moist potential vorticity are analyzed in the process of the six heavy rain days over the middle Yunnan in June 1998. The results show that the very stiff moist isentropes and strong warm and moist air located its south can lead to the development of moist slantwise vorticity and the heavy rain occurred. The top of moist convection air can only attain between 600 hPa and 500 hPa levels. When MPV 1<0 and MPV 2>0, sudden heavy rain will probably happen. |
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| Keywords: | Moist potential vorticity Slantwise vorticity development Heavy rain |
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