【摘要】 从大暴雨发生前后气象要素变化、环流背景、影响系统、区域流场入手,对2009年8月28日发生在驻马店市的突发性局地大暴雨天气过程进行了分析。结果表明,这次突发性大暴雨过程具有明显的中小尺度系统特征,主要影响系统是850、700 hPa切变线和地面辐合线。通过对多普勒天气雷达基本反射率因子、径向速度和风廓线产品的分析,发现"V"型缺口、钩状回波、中气旋的特征明显,充分说明了这次局地大暴雨过程是超级单体风暴造成的。更多还原

【Abstract】 The sudden local severe precipitation in Zhumadian City on August 28,2009 was analyzed from the aspects of meteorological elements change,the atmospheric circulation background,the influence system and the region flow field before and after the severe precipitation.The results showed that this heavy storm had obvious meso-small scale system characteristics,the major affect system were the shear lines in 850 and 700 hPa and the ground convergence line.Through the analysis of the Doppler weather radar basic index such as the reflection factor,the radial velocity and the wind profile,it was find that the characteristics of "V" notched,the hook echo and the cyclone were obvious,those showed that this local heavy precipitation was caused by the supercell storm.更多还原