radar volume

Using the volume scannings from 711 type digitized weather radar and telemetered data, the basic characters of precipitation caused by sheet cloud are obtained.

利用数字化711测雨雷达观测的层状云雷达立体扫描资料和探空资料，分析得出层状云降水部分特征。

Using the CA PPI data at different heights and the PPI data at loW elevation angle based on the 3 dimentional volume scaning data of 714 digital radar in the Shanghai Central Meteorological Observatory, the area precipitation is estimated and the distribution pattern is achieved.

应用上海中心气象台714数字化天气雷达的体积扫描资料所得到的不同高度上的CA PPI资料和低仰角时PPI资料，估算区域降水量并得到降水量分布形势。

The three-dimensional wind of the heavy rain were retrieved by MUSCAT ( multiple-Doppler synthesis and continuity adjustment technique) using the dual-Doppler radar volume scan data. It showed that the convergence line and the meso-cyclone at the low level play an important role in this heavy rain event.

使用MUSCAT技术对这次特大暴雨进行了双多普勒雷达三维风场反演，研究表明，中低层辐合线和中尺度气旋是造成此次暴雨的重要原因；