2006年7月3日黄淮地区大暴雨过程分析  

The analysis of a heavy rainfall in Huanghuai area on 3 July,2006

作　　者：石莹[1,2] 孙成武 朱时良 邰庆国 

机构地区：[1]兰州大学大气科学学院,兰州730000 [2]山东省临沂市气象局,山东临沂276004

出　　处：《气象科学》2009年第1期110-114,共5页Journal of the Meteorological Sciences

基　　金：山东省气象局重点科研课题项目(2004SDQXZ200)"临沂市精细化天气预报系统"

摘　　要：利用地面和高空常规气象观测资料及全省自动站逐时观测风场资料、MM5中尺度数值模拟资料、多普勒天气雷达观测资料,对2006年7月3日发生在黄淮地区的大暴雨过程进行分析和模拟。结果表明:这次暴雨是由高空低涡前部强盛西南暖湿急流与地面生成的中气旋影响造成的;切变线两侧大气层结的强烈不稳定对形成此次短时暴雨有重要促进作用;此次临沂市短时暴雨是由低空切变线上生成的中β尺度气旋东移影响的;在有利的大尺度环流背景下,可利用数值预报产品预估过程集中影响时段,结合卫星云图资料范围大,雷达回波探测性强,自动站资料实时性、灵活性强等优点,进一步作好短时暴雨的临近预警预报,提高短时暴雨的预报提前量,努力降低短时暴雨造成的经济损失。A heavy rainfall occurred on July 3, 2006 in Huanghuai region has been analyzed and simulated, making use of surface and aerological data and wind data of automatically stations per-hour. The results show that the instability energy of both sides of shear line plays an important role in forming a short-time rain; the heavy rain is generated by several meso-β-scale cyclones moving eastward directly; under the suitable background of large-scale circulation, we can use NWP products to anticipate when the rain effects us ; with the wide range of satellite images, the strong detectability of radar and the high flexibility of automatical stations, we can make a further step in the forecast of heavy rain to reduce its economic losses.

关 键 词：大暴雨 中β气旋 模拟 

分 类 号：P458.121.1[天文地球—大气科学及气象学]