一次超级单体的雷达回波特征分析  

Analysis on the Radar Echo Characteristics of a Supercell

作　　者：周楠[1] 任思衡[1,2] 王春明[1] 王巍 陈锋立[1] 卢强[1] 胡鹏[1] 

机构地区：[1]解放军理工大学气象学院 [2]96167部队 [3]重庆市梁平县气象局

出　　处：《安徽农业科学》2011年第10期5949-5953,5975,共6页Journal of Anhui Agricultural Sciences

摘　　要：利用万州和重庆两部多普勒天气雷达,对2010年5月6日凌晨重庆地区出现的强对流天气中一个造成严重灾害的风暴进行了分析。结果表明,该风暴具有超级单体特征,在反射率因子上出现了三体散射、有界弱回波(BWER)、悬挂回波,相应的径向速度图上出现了逆风区和中层径向辐合(MARC);另外,液态垂直累积含水量(VIL)跃增,三体散射、中层径向辐合等多普勒雷达回波特征均可为大风冰雹临近预警提供有价值的信息。By using the two Doppler radars of Chongqing and Wanzhou,the strong convective storms occurred in Chongqing on May 6,2010 which caused hailstorms and gale were analyzed.As indicated by the results,the storm took on the supercell characteristic,the reflectivity presented three-body scattering,bounded weak echoes region（BWER） and handing echoes,while the radical velocity echoes showed adverse wind zone and mid-altitude radial convergence（MARC）;what＇s more,the VIL increased in a leap,three-body scattering,mid-altitude radial convergence and other radar echo characteristics provided valuable information for the approaching forecast of the gale and hailstorms.

关 键 词：超级单体 多普勒雷达回波特征 三体散射 有界弱回波 逆风区 中层径向辐合 VIL 

分 类 号：S42[农业科学—植物保护]