7号台风在“6.30”区域性大到暴雨过程中的作用分析

Analysis of Effect of NO.7 Typhoons in a Region Rainstorm on June 30

利用Micaps系统提供的资料,结合本地气象要素,对2004年6月30日忻州市部分县出现暴雨过程的天气系统和物理量场进行了分析,此次大雨到暴雨过程是高空低槽与7号台风“蒲公英”相互作用产生的。西风槽为降强水提供动力及冷暖空气,台风为强降水提供水汽。

Through analysis of weather system and physical variable field of this rainstorm process on June 30 2004 in Xinzhou, used of the data from Micaps system, added up to the local weather elements. This rainstorm caused by the co- operation of upper low pressure trough and “ dandelion” NO.7 typhoons. West wind trough provided power and cold- warm air for this strong precipitation, typhoon provided vapors.