“2006．4．11”闽北降雹过程多普勒雷达资料分析

Characteristic Analysis of Doppler Radar Data of ＂2006.4.11＂ Hail Storm in Northern Fujian

利用建阳新一代天气雷达6分钟一次的观测资料，对造成2006年4月11日傍晚至夜里闽北降雹的回波资料进行分析。结果表明，造成闽北降雹的强风暴单体主要有两个。雹云单体a在其生命史中主要以孤立单体形式存在，雹云单体b是与飑线相伴的一个强风暴单体。二者在成熟阶段都具有超级单体特性：低层弱回波区（WER）和中高层悬垂结构及“中气旋”报警。前者还具有显著弓形回波、后侧入流槽口、逆风区等特征，后者具有明显的钩状回波特征和旋转特性等。在雹云的不同发展阶段，强中心回波强度（dBZM）、强核回波高度（HT）、风暴顶高度（TOP）和垂直积分液态含水量（VIL）具有不同的特征。在强盛阶段：dBZM变化不大，而HT、TOP、VIL则出现较大的波动，每次大的波动对应地面一次强天气。风暴移向移速预测信息能较好地指示风暴强核回波的未来走向。

Based on the Jianyang CINRAD radar data , the echo data created the hail storm process in the evening and night on April 11, 2006 in northern Fujian was analyzed. The result showed that, there are mainly two strong storm monomer created the hail storm process. Hail cloud monomer A was mainly existing by the isolation monomer form in its life history, hail cloud monomer B is a strong storm monomer accompanied with the squall line . both of two has the supercall storm characteristic in the mature stage： The Werk Echo Region （WER） in the low elevalion the echo overhang in the middle to high elevations with the mesocyclone alarm. The hail storm A also has the remarkable arch echo, the inflow side at the back, the against wind area, and so on. The hail storm B has the obvious hook echo with the rolation characteristic, and so on.. In the different development phase of hail storm, the dBZ of the maximum reflectivity （dBZM） , the echo highth of the dBZM （HT） , the echo highth of the ≥30dBZ （TOP） and the vertical integraed liquid （VIL） has different characteristic. In the mature stage： The dBZM change is not big, but HT, TOP, VIL appear a bigger undulation corresponded a ground disaster weather. FCST MVMT （Forecast movement） information of the storm property sheet of the composite reflectivity will be able to instruct the future movement of the storm strong nuclear echo well.