贵州铜仁两次大范围冰雹过程的对比分析

利用常规观测、地面加密自动站降水、雷达观测及NCEP 1°×1°再分析资料等对2016年4月2日和15日发生在贵州省铜仁市的两次冰雹天气过程进行对比分析,结果发现:(1)降雹由地面发展雷暴和高架雷暴产生,前者在暖区产生,后者在锋后冷垫上形成;(2)前者由地面辐合线锋生激发对流,后者由逆温层顶850 hPa切变线触发,两者的强上升运动区域明显不同;(3)雷达回波形态上前者为弓形回波,强对流回波从近地面发展至10 km左右高度,"三体散射长钉"和有界弱回波区等现象明显;而后者为多单体风暴,有界弱回波区特征明显,强对流回波柱密实而深厚,回波质心较高。

A comparative analysis of two different Thunderstorm Hailfall Weather Processes

Based on the conventional observation, ground intensive stations precipitation, Tongren Doppler Radar observation and NCEP 1 ° x 1 ° data, etc. two large area hailfall weather processes on 2 and 15 April 2016 occurred in Tongren of Guizhou Province were analyzed. The results are as follows: (1)The hailstorm is generated by thunderstorms and elevated thunderstorms on the ground. The former is generated in the warm area and the latter is formed on the rear cold pad.(2)The former is stimulated by converging ground convergence fronts, and the latter is triggered by the inversion layer 850hPa shear line, and the strong rising motion areas of the two are significantly different.(3)In the form of radar echoes, the former is a bow echo, and the strong convective echo is developed from the near ground to a height of about 10 km. The "three-body scattering spike" and the bounded weak echo area are obvious; while the latter is a multiple unit storm, The characteristics of the bounded weak echo region are obvious, and the strong convective echo column is dense and deep, with a high echo center.(4)There are some differences in the VIL, vertical wind shear, and high echo development height.