卫星云图与雷达资料在一次强对流天气过程中的应用

摘要

The severe convection weather caused by meso-and micro-scale has small spatial scale and time scale and hard to capture with conventional data, but with real-time satellite cloud picture and radar data,the extensiveness of cloud system and the occurring, de-veloping and disappearing process of the meso-and micro-scale convective cloud cluster could be observed.The change of cloud top brightness temperature of satellite cloud picture corresponds to heavy precipitation. Radar helps the analysis of the heavy precipitation area, particularly the occurring of adverse wind region in hodograph, which hap-pens 1-2 hours before the heavy precipi-tation.%由中小尺度系统造成的强对流天气空间尺度小、时间尺度短，用常规资料很难抓住，但利用实时卫星云图及雷达资料，不仅可观测大范围云系分布，而且可观测到中小尺度对流云团的发生、发展和消散演变的全过程。卫星云图云顶亮温的变化与强降水有很好的对应关系，雷达产品有助于分析强降水的落区，特别是速度图中逆风区的出现相对于较强降水有1~2h的提前量。