| 浙江省２月份连续降雹过程诊断 |
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| 引用本文： | 刘学华,王立静,何丽萍,邱小伟. 浙江省２月份连续降雹过程诊断[J]. 气象科学, 2011, 31(1): 46-53 |
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| 作者姓名： | 刘学华 王立静 何丽萍 邱小伟 |
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| 作者单位： | 1. 金华市气象局,浙江,金华,321000
2. 滨州市气象专业台,山东,滨州,256612 |
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| 基金项目： | 浙江省气象局重点科技专项(2007ZD005) |
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| 摘 要： | 利用NCEP再分析资料、MICAPS常规资料、雷达产品等资料对浙江省2009年2月23—26日连续降雹天气过程进行了诊断分析。结果表明:此次连续降雹过程降雹区均出现在高低空急流轴交叉点南侧约1个纬度,底层辐合区;850 hPa较强的水汽辐合和湿舌为此次降对流过程提供了充沛的水汽条件,上干下湿结构使对流性不稳定增强,逆温层存在使大量不稳定能量储积起来,底层冷空气渗透触发强对流发生;Ic500-700指数对此次降雹过程有较好指示意义;2月份冰雹雷达回波特征有别于春、夏季冰雹回波特征,冬末春初冷空气势力仍较强,对流强度偏弱,回波顶高偏低,其三体散射特征不明显,VIL值较小。
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| 关 键 词： | 冰雹 环流形势 对流有效位能 Ic500-700 |
| 收稿时间： | 2010-01-11 |
Diagnosis analysis of continuous hail weather in February in Zhejiang |
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| Liu Xuehu,Wang Lijing,He Liping and Qiu Xiaowei. Diagnosis analysis of continuous hail weather in February in Zhejiang[J]. Journal of the Meteorological Sciences, 2011, 31(1): 46-53 |
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| Authors: | Liu Xuehu Wang Lijing He Liping Qiu Xiaowei |
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| Affiliation: | Liu Xuehua1 Wang Lijing2 He Liping1 Qiu Xiaowei1(1 Jinhua Meteorological Bureau,Zhejiang Jinhua 321000,China)(2 Binzhou Meteorological Specialty Observatory,Shandong Binzhou 256612,China) |
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| Abstract: | Using reanalysis data of NCEP,MICAPS and radar,the continuous hail weather in February in Zhejiang is analyzed.The result is that: area of continuous hail is about one latitude from the southern side of the cross-over of upper and lower level's jet axes,and on the belt of lower level convergency.Strong water vapor belt and moisture tongue of 850 hPa offer abundant water vapor condition for this hail course.Configuration of dry upper-level and wet lower-level makes convective instability stronger.Inversion l... |
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| Keywords: | Hail Circulation pattern CAPE Index of Ic500-700 |
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