| 2016年鲁西平原地区一次寒潮天气过程分析及对其农业的影响 |
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| 引用本文： | 韩雪蕾,纪凡华,韩风军,王小亚,徐娟.2016年鲁西平原地区一次寒潮天气过程分析及对其农业的影响[J].农学学报,2017,7(10):90-95. |
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| 作者姓名： | 韩雪蕾 纪凡华 韩风军 王小亚 徐娟 |
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| 作者单位： | 山东省聊城市气象局,山东聊城,252000 |
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| 基金项目： | 山东省气象局局面上课题“鲁西北雨雪相态转换机制和预报方法研究”(2012sdqx03)。 |
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| 摘 要： | 以常规观测、卫星云图等资料对2016年1月22—24日聊城市寒潮天气过程的环流背景、物理量场等方面进行分析,得到此次寒潮天气过程的变化及对农业的影响.结果表明:大西洋暖脊在高纬东伸,促使乌拉尔山地区的弱脊不断发展形成阻高形势,是冷空气发展加强的有利条件;近地面冷高压势力强盛,受强冷平流影响,此次寒潮过程产生大风降温天气,气温持续降低,另外良好的水汽条件都是产生降雪的原因;从卫星云图可以看到,横槽槽线前陕西、山西和河北中部地区形成的一条宽广的层状云云带产生降雪天气,横槽转竖后云带后边缘光滑,也表示着强大的地面冷高压.
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| 关 键 词： | 寒潮 横槽 冷高压 温度平流 农业 |
| 收稿时间： | 2016/10/10 0:00:00 |
| 修稿时间： | 2017/5/30 0:00:00 |
A Cold Wave Weather in West Shandong Plain in 2016: Diagnostic Analysis and Its Impact on Agriculture |
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| Han Xuelei,Ji Fanhua,Wang Xiaoya,Han Fengjun,Xu Juan.A Cold Wave Weather in West Shandong Plain in 2016: Diagnostic Analysis and Its Impact on Agriculture[J].Journal of Agriculture,2017,7(10):90-95. |
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| Authors: | Han Xuelei Ji Fanhua Wang Xiaoya Han Fengjun Xu Juan |
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| Abstract: | The paper aims to analyze the circulation condition and physical variable field of a cold wave process happened at Liaocheng on January 22 to 24, 2016, through the analysis of conventional observation and satellite cloud image, we summarize the cold wave process change and its effect on agriculture. The results suggest that warm Atlantic ridge extended eastward at high latitude, forced the weak Ural mountain ridge to form the Ural blocking high, which is a favorable condition for the development of cold air; near surface cold high pressure dominates, strong wind occurred and air temperature decreased continuously during this cold wave process because of the effect of strong cold convection, moreover, well water vapor condition provide a favorable condition for snowfall; one broad sheet cloud band before the transversal trough line located in Shanxi, Shanxi and middle Hebei on the satellite cloud image caused snowfall weather, back edge of the cloud band became smooth after transversal trough changing to the vertical, which indicated strong surface cloud high pressure. |
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| Keywords: | cold front horizontal tank cold high pressure Stemperature advection cold front weather |
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