典型带状云系强降雨过程卫星云图演变特征分析

Analysis of Satellite Nephogram Evolvement for Heavy Raining Process Due to Typical Banded Cloud System

通过对两个典型的带状云系的强降水过程的卫星云图进行定量分析,初步验证了可以用云带0℃边界反映冷高压和副高的活动态势,揭示了降雨强度与云带强度指数及TBB面积指数有很好的对应关系。同时,还研究了暴雨落区与对流云团活动范围的关系,强降水时段与对流云团的发展阶段的对应关系。

A quantitative analysis of satellite nephogram for two heavy raining processes due to typical banded cloud system proves the possibility of reflecting by 0℃ boundary of cloud band the activity state of cold high pressure and sub-high pressure, and it reveals the close correlations among raining strength, band strength index and TBB area index. Meantime, study is made on the relations between falling area of storm and scope of convective cloud blocks activity, as well as the corresponding relations between time period of heavy rain and the development stage of convective cloud blocks.