青藏高压前部突发性局地强暴雨的初步研究  

THE PRELIMINARY STUDY OF FLASH HEAVY RAIN IN THE FRONT OF QINGZANG HIGH

作　　者：陈忠明[1] 荣锦海 

机构地区：[1]成都高原气象研究所,四川省成都市610072 [2]成都气象局,四川省成都市610072

出　　处：《高原气象》1992年第1期90-95,共6页Plateau Meteorology

摘　　要：本文通过对一次500hPa青藏高压前部的突发性强暴雨天气的诊断分析,揭示了暴雨产生的环境场特征。利用带通滤波方法,分析了与暴雨天气密切相关的中尺度系统及发展机理,获得了一些对业务预报有指导意义的结果。In this paper, the diagnostic analyses on a case of flash heavy rain in front of Qingzang High are conducted. Results show: (1) Ambient fields to generate this heavy rain are very different as compared with last research results. (2) Using technic of band-pass filter, mesoscale system related to this heavy rain can be dissociated from baseline fields. (3) Positive feedback process between disturbance and non-thermal wind adjustment is a mechanism of evolution of mesocale cyclone.

关 键 词：青藏高原 暴雨 带通滤波 中尺度系统 形成机制 500hPa 诊断分析 

分 类 号：P458.121.1[天文地球—大气科学及气象学]