Application of Wind Profiler Radar in a Short Period Heavy Rain Process
Shi Jun
Zhao Yujie
Wang Qingyuan
Yang Yanchen
Jiang Haoyan
Abstract：Base on data obtained from 3 wind profiler radars and conventional observational data during a short period heavy rain process on 24th August 2014 in Tianjin,the variation characteristics of wind profiler radar data at the different stages of rainfall including formation,development and dissipation are analyzed to study the monitor ability of wind profiler radar on precipitation.The results show are as follows.1)The wind profiler radar can not only reflect the unstable atmospheric structure with cold lower and warm upper,but also has capable of detecting the presence of shear line,which has a strong ability to detect the vertical structure of wind.2) The vertical velocity and refractive index structure constant increase obviously when precipitation appears.The appearing and disappearing time of 4 m · s-1 vertical velocity reflect the start and end of the rainfall and the greater the vertical velocity below 4000 m,the stronger the precipitation.There is a perfect correlation between the refractive index structure constant and the precipitation intensity in Xiqing and Jinghai stations.Although the refractive index structure constant as the indicator of precipitation intensity is not identical in different regions.3) The acquired rate of the wind profiler radar data would decrease significantly in heavy precipitation period.So the low acquired rate of data has certain indicative significance for strong precipitation.
Keywords：wind profiler radarvertical velocityrefractive index structure constantacquired rate of the data
Publication Date：2017-10-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 83-89 )