| 华北盛夏暴雨过程的能量特征分析 |
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| 引用本文： | 赵桂香,李新生,袁崇民,牛永波,王莉. 华北盛夏暴雨过程的能量特征分析[J]. 山西气象, 2006, 0(1): 3-4,7 |
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| 作者姓名： | 赵桂香 李新生 袁崇民 牛永波 王莉 |
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| 作者单位： | 山西省气象台 山西太原030006(赵桂香，袁崇民)，山西省晋中市气象局 山西晋中030600(李新生)，山西省防雷减灾办公室 山西太原030002(牛永波)，山西省吕梁市离石区气象局 山西离石033000(王莉) |
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| 摘 要： | 本文利用实况资料和T213输出资料,对发生在2005年8月16日～17日的华北暴雨过程进行了能量学特征分析,结果表明:暴雨前24h～36h,对流层上下层有暖湿空气同时发展,是暴雨发生的重要动力机制;强的干、湿静力能锋区稳定维持是这次大范围暴雨产生的能量基础,中低层湿静力能差值大于0,且数值很大,说明对流不稳定层结很强,暴雨发生在高能、高不稳定度的条件下;水汽的充足补给作用,是这次暴雨过程能量转换的基础。
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| 关 键 词： | 能量 暴雨 水汽 不稳定度 |
| 文章编号： | 1004-5732（2006）01-0003-02 |
| 收稿时间： | 2005-10-12 |
| 修稿时间： | 2005-10-12 |
The Analysis of the Energy Characteristics of the Heavy Rain Event in Midsummer over Northern China |
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| Zhao GuiXiang,Li XinSheng,Yuan ChongMin,Niu YongBo,Wang Li. The Analysis of the Energy Characteristics of the Heavy Rain Event in Midsummer over Northern China[J]. Shanxi Meteorological Quarterly, 2006, 0(1): 3-4,7 |
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| Authors: | Zhao GuiXiang Li XinSheng Yuan ChongMin Niu YongBo Wang Li |
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| Abstract: | Using the live data and the output data of the model T213,the energy characteristics of the rain-storm Occurred On August 16 to 172005over North China are analyzed.The re sults show that the warm and moist air exists synchronously over the up per and lower troposphere 24 to 36 hou rs before the rainstorm,the air is an important dynamical mechanism whic h brings rainstorm.The steady keepi ng of frontal zone which have the stro ng dry and wet static energy is the energ y basic of the large -scale rainstorm.The difference of the wet static energy over middle and lower troposphere is bigger than 0,and the value is large.It indicates that the convective insta-bility stratification is very stron g,so the rainstorm occurred on the condition of the high energy and high in stability.The supply of the water vapor is the basis of the energy transformation thr ough the rainstorm. |
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| Keywords: | energy rainstorm water vapor instability |
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