| 一次华北冷涡动力热力结构及发展机制分析 |
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| 引用本文： | 郁珍艳,何立富,李泽椿.一次华北冷涡动力热力结构及发展机制分析[J].气象科学,2011,31(6):667-676. |
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| 作者姓名： | 郁珍艳 何立富 李泽椿 |
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| 作者单位： | 1. 浙江省气候中心,杭州,310002
2. 中国气象局国家气象中心,北京,100081 |
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| 基金项目： | 科技部公益性行业（气象）科研专项（GYHY200706042）;浙江省气象局重点科技专项(2008ZD14) |
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| 摘 要： | 通过对2008年6月22-30日产生强对流天气过程中的华北冷涡动力、热力结构和演变特征的分析,发现:此次冷涡发展深厚,300 hPa冷涡中心明显,冷涡还在地面诱发了锋面气旋.在冷涡发展直至初步减弱阶段对流层整层都为正涡度区,中高层正涡度逐渐向低层传播.冷涡发展加强阶段,冷涡南侧高空西风急流发展加强,东西两侧的经向风分布...
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| 关 键 词： | 华北冷涡 强对流天气 冷空气 |
| 收稿时间： | 2010/8/29 0:00:00 |
Analysis on dynamic and thermal structure and development mechanism in a cold vortex over North China |
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| YU Zhenyan,HE Lifu and LI Zechun.Analysis on dynamic and thermal structure and development mechanism in a cold vortex over North China[J].Scientia Meteorologica Sinica,2011,31(6):667-676. |
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| Authors: | YU Zhenyan HE Lifu and LI Zechun |
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| Institution: | YU Zhenyan1 HE Lifu 2 LI Zechun2(1 Zhejiang Climate Center,Hangzhou 310002,China,2 National Meteorological Center,China Meteorological Adminstration,Beijing 100081,China) |
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| Abstract: | Through analyses on the structure and evolution characteristics of cold vortex from June 22 to 30,2008,it was found that this cold vortex developed strongly,its center at 300 hPa was evident,it also had induced frontal cyclone on the ground.In the process from the development phase to the initial weakening stage,the entire troposphere consisted of positive vorticity,which spread from middle and high level to low level gradually.In the development stage,high-altitude westerly jet strengthened in the south of... |
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| Keywords: | cold vortex over North China severe convection cold air |
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