摘要
2008年6月1～2日大理市暴雨过程的风廓线雷达资料和每小时的雨量资料分析发现：暴雨过程具有明显的中小尺度系统影响特征，雷达水平风廓线资料可以很直观地显示随时间变化风场的垂直结构；高空气流的向下脉动与降水强度的增强有着紧密的联系；风廓线雷达产品（垂直速度、折射率结构常数和信号噪声比）清楚地反映降水的开始、结束以及降水的强度。
An analysis of a heavy rainfall event on 2 June 2008 in Dali, Yunnan Province, is made with wind profiler radar products and hourly rainfall data. The results show that the event is characterized with apparent mesoscale features; the vertical structure can be clearly revealed by the horizontal wind profiler products; the downward disturbance at the upper atmosphere is closely related with the enhancement of rainfall; the products of wind profiler radar （such as vertical velocity, refractivity structure constant, signal to noise ratio） can be used to determine the beginning, ending and intensity of rainfall.
出处
《气象科技》
北大核心
2009年第4期411-414,517,共5页
Meteorological Science and Technology
基金
云南省气象局青年研究基金项目(Q200808)
云南省应用基础研究面上项目(2008CD178)
"JICA"项目共同资助
关键词
风廓线雷达
暴雨预报
垂直速度
折射率
信噪比
wind profiler radar, heavy rainfall forecast, vertical velocity, refractivity, signal to noise ratio
