| 豫西地区一次冰雹天气多普勒雷达资料分析 |
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| 引用本文： | 陈红霞,吕作俊,姬鸿丽,高省莉,李志勇,唐俊.豫西地区一次冰雹天气多普勒雷达资料分析[J].河南气象,2007(3). |
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| 作者姓名： | 陈红霞 吕作俊 姬鸿丽 高省莉 李志勇 唐俊 |
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| 作者单位： | 洛阳市气象局 河南洛阳471000(陈红霞，姬鸿丽)，三门峡市气象局 河南三门峡472000(吕作俊，高省莉，唐俊)，洛宁县气象局 河南洛宁471700(李志勇) |
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| 摘 要： | 利用常规气象资料和多普勒雷达资料,从天气形势、物理量场和雷达回波演变特征等方面分析2006年8月豫西地区一次大范围冰雹天气过程的成因。结果表明:高空冷空气的侵入对不稳定能量释放起了触发作用,华北冷涡和低层切变线的相互配置为冰雹的发生提供了有利的动力抬升条件,地面冷锋的南压迫使暖湿空气抬升利于冰雹的形成;普通单体风暴或超级单体风暴都可导致冰雹发生,中气旋、逆风区、低层辐合的存在及产生冰雹前的高反射率因子、高的强冰雹概率、高垂直积分液态水含量这些典型的强回波特征,对冰雹的短时(临近)预报具有一定的指示意义。
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| 关 键 词： | 环流背景 物理量 多普勒雷达产品 |
Analysis of the Hail Weather in West Henan Region with Doppler Radar Data |
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| Chen Hongxia,Lu Zuojun,Ji Hongli,Gao Shengli,Li Zhiyong,Tang Jun.Analysis of the Hail Weather in West Henan Region with Doppler Radar Data[J].Meteorology Journal of Henan,2007(3). |
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| Authors: | Chen Hongxia Lu Zuojun Ji Hongli Gao Shengli Li Zhiyong Tang Jun |
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| Institution: | Chen Hongxia1,Lu Zuojun2,Ji Hongli1,Gao Shengli2,Li Zhiyong3,Tang Jun2 |
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| Abstract: | Using the regular meteorological data and Doppler radar data,a large range hail weather process in west Henan region in August of 2006 is analyzed from weather situation,physical element fields and radar echo evolution feature aspect.The result shows the release of unstable energy was triggered by the invasion of cold air.Strong updrafts produced by the coupled cold vortex system in North China and low-layer shear line are favorable for occurrence of the hail weather.The cold front southward makes warm and wet atmosphere uptrend,which is helpful to form hail.The common cellular or super cellular storm is helpful to form hail,too.The existence of mesocyclone,anti-wind zone,low-layer convergence,and the strong echo characteristics such as high reflectivity factor,strong hail probability,vertical integrated liquid before hail weather can guide nowcasting forecast of hail weather. |
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| Keywords: | circulation background physical element Doppler radar product |
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