华南一次暴雨过程的中尺度结构  

ON THE MESOSCALE STRUCTURE OF A HEAVY RAIN OCCURRING IN SOUTH CHINA

作　　者：韦统健[1] 艾秀 江少林[1] 包澄澜[1] 

机构地区：[1]南京大学大气科学系

出　　处：《热带气象》1989年第1期72-78,共7页

摘　　要：利用合成分析方法检验了一次华南暴雨的三维气象要素场的分布。发现一个具有微冷锋特徵的辐合线是造成这次暴雨的主要中系统。在低层,暴雨区的后部存在着弱下沉气流,并导致了一个相应的低层冷区和地面弱流出辐散气流。中、高层是一中尺度暖区。暴雨区介于天气尺度高、低空急流之间,并且有向着最大上升区移动的趋势。The distribution of three dimensions meteorological element fields of a heavy rain that occurring in the Southern China region was examined using a composite method. A mesoscale convergence line with some features of mini-cold front was a main system which caused the heavy rain. There was a weak downdraft at the rear of the heavy rain region at low level. It resulted in the divergent outflow at ground and a mesoscale cold region at low level. But at mid-and-high level, there was a warm region. The heavy rain region was between a large-scale low-level jei and high-level jet and showed the teudency of moving toward the maximum updraft region.

关 键 词：暴雨过程 中尺度结构 

分 类 号：P458.121.1[天文地球—大气科学及气象学]