【摘要】 通过利用人工消雨作业目标区和对比区降水量资料,研究了作业前后降水量的时间变化和空间变化。开展作业后作业区出现了显著的降水低值区,作业影响区出现了延迟降水。说明集中过量播撒作业对抑制云团的发展起到了积极的作用,消雨作业实施后1~3 h内有一定的作业效果。消雨作业实施后,目标区(影响区)的降水量要明显小于对比区的降水量。更多还原

【Abstract】 By analyzing the weather background of the artificial rain dispersal of opening ceremony of China Lanzhou Investment and Trade Fair,the paper used the precipitations data in the artificial rain dispersal target area and comparing area during the day,the temporal and spatial variation of precipitation before and after the artificial rain dispersal were studied. A significantly low rainfall and the lag of precipitation appeared in the area affected by the artificial rain dispersal. The results show that excessive seeding operation has played a positive role on the inhibition of cloud develop, and has a certain operating effect in 1~3 hours after operations for precipitation elimination. After operations for precipitation elimination,precipitation of the target area(affected area)was significantly less than the contrast area.更多还原