| 一次右移传播的强对流风暴研究 |
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| 引用本文： | 范皓,吴正华,段英.一次右移传播的强对流风暴研究[J].应用气象学报,2004,15(4):445-455. |
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| 作者姓名： | 范皓 吴正华 段英 |
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| 作者单位： | 1.河北省邢台市气象局, 邢台 054000 |
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| 基金项目： | 河北省自然科学基金项目 ( 4 0 1 4 85 )“突发性强对流暴雨和强冰雹天气形成规律的研究”资助 |
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| 摘 要： | 对1998年6月21日华北平原强对流风暴的天气动力学分析表明, 这次强对流风暴是发生在华北区域出现前倾性阶梯槽形势下, 对流层中、下层的差动温度平流和干暖盖的存在是对流不稳定层结形成和发展以及有效对流能量存储的重要条件;对流层中、低层的西风扰动触发对流云团生成, 而对流云团在明显右移传播过程中不断发展增强, 是与对流云团南侧存在明显的动压垂直加速度、高能暖湿气流的不断输入以及对流云团的合并有关。
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| 关 键 词： | 强对流风暴 右移传播 有效对流能量 动压垂直加速度 |
| 收稿时间： | 2003-05-20 |
| 修稿时间： | 2003年5月20日 |
Investigation on a Severe Convective Storm Moving Right |
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| Fan Hao,Wu Zhenghua,Duan Ying.Investigation on a Severe Convective Storm Moving Right[J].Quarterly Journal of Applied Meteorology,2004,15(4):445-455. |
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| Authors: | Fan Hao Wu Zhenghua Duan Ying |
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| Affiliation: | 1.Xingtai Weather Of fice , Hebei Province , Xingtai 0540002.Institute of Urban Meteorology , Beijing 1000893.Hebei Weather Modif ication Of fice , Shijiazhuang 050021 |
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| Abstract: | Synoptic and dynamic conditions of a severe convective storm occurring in the plain of North China on 21 June 1998 were investigated. It was favorable for the occurrence of the storm. In addition, a warm dry cover and the differential temperature advection between mid and low troposphere are quite important to the formation and development of convective instability, and to the accumulation of convective available potential energy as well. The genesis of convective clouds was triggered by the turbulence of westerly in the mid to low troposphere. Moreover, the convective clouds kept on developing during their process moving rightward. Such phenomenon was relevant to the dynamic pressure vertical acceleration locating to the south of convective clouds, the import of the warm wet air and the clouds combination. |
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| Keywords: | Severe convective storm Right moving Convective available potential energy (CAPE) Dynamic pressure vertical acceleration |
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