广西一次连续性暴雨过程分析  

A continuous torrential rain process analysis in Guangxi

作　　者：屈梅芳[1] 古文保[2] 

机构地区：[1]广西区气象台,广西南宁530022 [2]广西气象减灾研究所,广西南宁530022

出　　处：《气象研究与应用》2016年第4期41-45,I0001,共6页Journal of Meteorological Research and Application

摘　　要：利用常规资料、物理量场特征和卫星云图等资料，对2012年6月22日-24日连续性暴雨过程进行诊断分析。结果表明：这次降水过程是由于副高加强西伸，高空槽加深，冷空气南下和副高西侧暖湿的偏南气流辐合产生的：由于这些环流系统的相互作用：水汽条件充足、湿度大、饱和层厚；低层辐合，高层辐散，垂直上升运动强烈；高温、高湿气流，不稳定能量大；另外利用卫星云图以及多普勒雷达图进行中尺度分析发现：强对流回波是暴雨过程的重要特征：逆风区和中小尺度辐合的出现都有利于暴雨的产生。Based on the conventional data, physical quantity field and satellite cloud image, a continuous torrential rain process during June 22 - 24, 2012 was diagnosed analyzed, the results show that the precipitation process is due to the subtropical high strengthening westward, upper trough deepened, cold air southward and the warm-and-moist south flow convergence on the west side of subtropical high; Because of the interaction of these circulation systems： water vapor is sufficient, humidity is big, saturated level is thick; low-level convergence and high-level divergence, vertical upward movement is strong; High temperature and high wet jet show the unstable energy; In addition by using satellite imagery and Doppler radar to make the mesoscale analysis, it is found that： strong convective echo is important characteristic of the heavy rain; and the upwind and the emergence of small and medium scale convergence are advantages to the heavy rain.

关 键 词：连续暴雨 诊断分析 雷达回波 中尺度系统 

分 类 号：P458.121.1[天文地球—大气科学及气象学]