辽宁省2008年8月11日暴雨过程能量条件诊断  

Diagnosis of Energy Conditions on Rainstorm in Liaoning Province on August 11,2008

作　　者：康晓玉 杨俊玲[2] 

机构地区：[1]鞍山市气象局,辽宁鞍山114004 [2]吉林市气象局,吉林吉林132013

出　　处：《安徽农业科学》2009年第29期14266-14268,共3页Journal of Anhui Agricultural Sciences

摘　　要：利用常规观测资料、新一代多普勒雷达资料、自动站气象要素资料,对2008年8月11日的环流背景、物理量场等分析,初步探讨了2008年8月11日鞍山地区暴雨形成原因。结果表明:该次暴雨发生前东亚地区高空环流形势呈两脊一槽型,8:00辽宁所辖区域整层大气维持上升运动,次级环流建立,有利于辽宁上空上升运动的维持,在此背景下产生中尺度气旋,气旋中蓄积了大量的层结不稳定和位势不稳定能量,上升运动导致能量释放,形成暴雨。With the conventional observational data, a new generation of Doppler radar data and automatic weather station elements data, circulation background and physical quantity field were analyzed, at the same time , the causes of the rainstorm in Anshan area on August 11, 2008 were preliminary studied. The results showed that： before the rainstorm, the high-altitude circulation in East Asia was two ridges-one trough, at 8：00, the whole atmosphere of the Liaoning region was maintaining rise, the secondary circulation was set up, which benifited of maintaining the rise motion in Liaoning area. So in this context mesoscale cyclones was generated, which accumulated a large number of stratification and potential instability energies, and the rise motion resulted in the energy released, formatting the rainstorm.

关 键 词：暴雨 多普勒雷达回波 能量条件 

分 类 号：S166[农业科学—农业气象学]