%0 Journal Article %A ZHANG Yi %A SUN Genhou %A YAN Xiaoqiang %T Effect evaluation of artificial precipitation enhancement in Chengdu based on regional historical regression method %D 2022 %R 10.11755/j.issn.1006-7639(2022)-04-0640 %J Journal of Arid Meteorology %P 640-645 %V 40 %N 4 %X

In order to evaluate operation effect of artificial precipitation enhancement in Chengdu. The regional historical regression statistical method was applied to test the effect of artificial precipitation enhancement in Chengdu in winter half-year from 2011 to 2019. The results show that the average absolute increments of precipitation in each month of winter half year ranged from 0.14 to 3.53 mm, and the relative precipitation increase ranged from 2.14% to 32.14%. The effect of precipitation enhancement was best in February and November,average absolute increments of precipitation was 2.74 mm and 3.53 mm, and the relative precipitation increase reached 32.14% and 28.06%, respectively. The precipitation enhancement effect in January was poor. The accumulated absolute increment of precipitation of winter half-year in the past 9 years in Chengdu was 88.8 mm, the annual average value was 9.9 mm, and the relative precipitation increase was 19.06%. Evaluating the artificial precipitation enhancement effect in Chengdu play a guiding role on how to scientifically carry out aircraft precipitation enhancement operation and improve precipitation enhancement efficiency.

%U http://www.ghqx.org.cn/EN/10.11755/j.issn.1006-7639(2022)-04-0640