两次副高边缘特大暴雨对比分析

利用常规资料、地面加密自动观测资料、NCEP/NCAR的1°×1°每6h再分析资料及多普勒雷达资料,对2011年6月16日（简称6.16过程）及2008年7月31日（简称7.31过程）发生在粤东南两次副高边缘特大暴雨进行对比分析。结果表明：6.16过程主要是受高空短波槽和偏南风急流共同影响而产生的,较厚的暖云层、深厚的湿层等使该过程降水范围更广;7.31过程主要是受对流中层扰动诱发产生的,为局地性强降水。雷达回波均表现为强的反射率因子,回波发展迅速且移动缓慢;6.16过程回波图上出现有界弱回波区（BWER）等超级单体风暴特征。

Contrastive analysis of two edge rainstorm on edge of subtropical anticyclone

Based on the conventional materials,ground encryption automatic observation data,NCEP/NCAR 1° x 1° per 6 h reanalysis data and doppler radar data,two rainstorm,which are on June 16,2011（6.16） and July 31,2008（7.31） respectively,on edge of subtropical high in south of Guangdong were analyzed.The result shows that the process on 6.16 is generated by combined impact of high altitude short-wave trough and south jet,warm thicker clouds and deep wet layer make the scope of precipitation is wider;while the process on 7.31 is mainly induced by the disturbance in the centre of the troposphere,which is the local heavy rain.Radar echo are characterized by strong reflectivity factor,which present rapid development and slow movement;Echo chart of 6.16 process present bounded weak echo region（BWER）,which is the characteristic of super cell storm.