The effects of aerosols under special terrain on lightning activities in the Sichuan Basin (SB) are studied using the cloud-to-ground (CG) lightning data and aerosol optical depth (AOD) data from 2010 to 2018. Interesting results show that the topographic drop plays an important role in the process of aerosol affecting lightning. The great topographic drop in the western SB is conducive to the production of CG lightning. Both the CG lightning production and AOD in the northwest and southwest of the basin decrease in fluctuation during the study period. It can be inferred that the reduction of aerosol results in the decrease of lightning activity. Due to the topographic drop in the northwest of the basin being greater than that in the southwest, the correlation of 0.64 between AOD and CG lightning in the northwest of the basin is larger than that of 0.31 in the southwest. Since the lightning activity in SB generally occurs at night, the aerosol-radiation interaction (ARI) has an insignificant influence on the occurrence of convection. Under this condition, it can be inferred that the aerosol-cloud interactions (ACI) are dominant over SB region. These could better support the reduction of lightning generation.

利用2010-2018年的云对地（CG）闪电数据和气溶胶光学深度（AOD）数据，研究了四川盆地（SB）特殊地形下气溶胶对闪电活动的影响。有趣的结果表明，地形水滴在气溶胶影响闪电的过程中起着重要作用。SB西部大的地形落差有利于CG闪电的产生。在研究期间，盆地西北部和西南部的CG闪电产量和AOD均呈波动下降趋势。可以推断，气溶胶的减少导致e减少的闪电活动。由于盆地西北部的地形降幅大于西南，因此盆地西北部AOD与CG闪电的相关系数为0.64，大于西南的0.31。由于SB的闪电活动一般发生在夜间，气溶胶-辐射相互作用（ARI）对对流的发生影响不大。在这种情况下，可以推断气溶胶-云相互作用（ACI）在 SB 区域占主导地位。这些可以更好地支持减少闪电的产生。