重庆一次超级单体风暴的综合分析  

Comprehensive Analysis of a Supercell Storm in Chongqing

作　　者：廖向花[1,2] 周毓荃[3] 唐余学 李轲[1] 

机构地区：[1]重庆市人工影响天气办公室,重庆401147 [2]兰州大学大气科学学院,甘肃兰州730000 [3]中国气象科学研究院,北京100081 [4]重庆市气象局气候中心,重庆401147

出　　处：《高原气象》2010年第6期1556-1564,共9页Plateau Meteorology

基　　金：国家"十一五"科技支撑课题(2006BAC12B07);重庆市科技攻关计划项目(CSTC.2008AB0015)共同资助

摘　　要：利用MICAPS常规天气资料、卫星和多普勒雷达等资料对2008年6月5日发生在重庆的一次超级单体风暴进行了综合分析。结果表明,该超级单体是在典型的＂上层干冷、下层暖湿＂的大气垂直结构下产生的,产生风雹的区域正好位于低空急流出口区及中低层风速辐合区;多普勒雷达观测表现为典型钩状回波、低层有界弱回波区和＂穹隆＂、中气旋、阵风锋等超级单体特征;垂直累积液态水（VIL）的突然跃增比冰雹降落时间提前2~3个体扫,对冰雹预报具有一定的指示意义;卫星反演的云粒子有效半径的大值区与冰雹落区较为一致;云中粒子半径〉36μm的粒子越多,所占比重越大,降雹的可能性就越大。Using the CINRAD-SA Doppler radar data,MICAPS conventional weather chart,and FY-2C satellite products,a supercell storm in Chongqing on June 5 2008 is analyzed.The result show that the super-cell storm generated by the mechanism of the typical ＇the upper-level is dry and cold,as well as the low-level is warm and wet＇,the hail shooting region is located in the export zones of low-level jet and wind convergence region.There are many supercell features of Doppler radar echo,such as hookecho,bounded weak echo region,vault,meso-cyclone,gust front and etc.It is also found that the abrupt increase of vertical integration of liquid water content（VIL） is ahead of two or three volume scan,which has certain indicating significance on hail forecasting.On the other hand,the large value of effective particle radius of cloud retrieved of FY-2C satellite is consistent with hail shooting area,the more the particle 36 μm in cloud is,its specific weight is bigger,and the larger the possibility of hail stooting is.

关 键 词：重庆 冰雹 超级单体 中气旋 阵风锋 VIL跃增 云粒子有效半径 

分 类 号：P458.11[天文地球—大气科学及气象学]