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| 大连市一次冰雹天气诊断分析 | |
| 引用本文： | 王桂春,于晓俐,刘晓初,宋若宁.大连市一次冰雹天气诊断分析[J].安徽农业科学,2010,38(8):4165-4168. |
| 作者姓名： | 王桂春 于晓俐 刘晓初 宋若宁 |
| 作者单位： | 1. 辽宁省大连市金州区气象局,辽宁大连,116100 2. 辽宁省大连市气象台,辽宁大连,116001 3. 南京信息工程大学滨江学院,江苏南京,210044 |
| 摘 要： | 利用常规气象资料和大连多普勒雷达资料,从天气背景、温度对数压力图和雷达反射率因子演变特征方面对2009年10月13日大连北部地区的冰雹天气过程进行分析。结果表明,此次冰雹天气发生在500hPa冷温槽前部,因500hPa冷槽转竖触发低层切变线而形成。冰雹发生前大气有不稳定能量和水汽输送条件。中低空切变线加剧了大气层结不稳定,促进不稳定能量的释放,产生冰雹天气,高低空急流配合为强对流发展提供了动力条件。多普勒雷达资料分析表明,强对流天气由多个对流单体组成,发展强盛时有钩状和V形缺口等特征,强回波区50～60dBz。 |
| 关 键 词： | 大连地区 冰雹天气 影响系统 诊断分析 |
Diagnostic Analysis on a Hail Storm Occurred in Dalian Area |
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| WANG Gui-chun et al.Diagnostic Analysis on a Hail Storm Occurred in Dalian Area[J].Journal of Anhui Agricultural Sciences,2010,38(8):4165-4168. | |
| Authors: | WANG Gui-chun |
| Institution: | Jinzhou District Meteorology Bureau of Dalian City;Dalian;Liaoning 116100 |
| Abstract: | By using regular meteorological data and Doppler radar data,causes for a hail storm over northern area of Dalian on Oct.13,2009 were analyzed from several aspects,including synoptic background,T-LnP charts and the characteristics of radar reflectivity factor evolution.The results showed that the hail storm occurred in downstream of 500 hPa trough.The 500 hPa cold trough turned zonally and triggered the formation of shear line on lower level.Before the hail event,instability energy and moisture supply were o... |
| Keywords: | Dalian Area Hail storm Synoptic system Diagnostic analysis |
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