孟加拉湾风暴云系对广西“99.10”大范围长时间降水的影响

The Effect Of Bangladesh Gulf Storm Cloud System On The “99.10”Wide-Range And Long-Duration Rainfall In Guangxi

利用卫星云图和天气图 ,对孟加拉湾风暴云系东扩从而造成广西“99.10”大范围、长时间降水的影响进行分析 ,得出生命史长、覆盖范围大和呈准静止状态的强大的孟加拉湾风暴云系与稳定少变的副高系统的有效配置 ,带来充足的水汽及低层大量的不稳定能量是造成这次暴雨过程的主要原因。

With the help of satellite cloud picture and weather map, this paper analyzes the effect of eastward extension of Bangladesh Gulf storm cloud system on the“99 10”wide range and long duration rainfall in Guangxi. It concludes that this storm was mainly caused by the strong, long life Bangladesh Gulf storm cloud system that is in quasi static condition and covers a wide range, as well as by the sufficient water steam and the large quantity of unstable energy at low level brought by the effective configuration of stable secondary high pressure system.