Cloud plays essential roles to Earth's energy balance and hydrological cycle. Its characteristics could be modified by human activities through cloud seeding. However, there is long‐lasting debate whether the cloud seeding can modify the clouds to introduce or change precipitation effectively, due to the challenge that the effect of cloud seeding is difficult to be evaluated. Using the data from a cloud seeding experiment, this study investigates the differences of cloud properties between before and after the cloud seeding for a supercooled liquid cloud. It shows that before the cloud seeding, the clouds are supercooled liquid phase clouds. After cloud seeding, the observations from both the cloud particle images and cloud particle size distributions indicate the occurrence of large ice crystal particles and the broadening of particle size distribution. Thus, much larger and much more ice crystal particles occurred after the cloud seeding, which could further grow into precipitation particles through collision‐coalescence process. Satellite image further shows the formation of precipitation clearly after the cloud seeding experiment. This study suggests that cloud seeding can work efficiently for supercooled liquid clouds.

中文翻译：

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基于飞机的播种实验中的气溶胶引起的过冷液态云特性的明显变化

云对地球的能量平衡和水文循环起着至关重要的作用。通过人类活动通过播云可以改变其特征。但是，由于难以评估云播种的影响这一挑战，对于云播种是否可以修改云以有效引入或改变降水存在着长期的争论。本研究使用云计算实验的数据，研究了过冷液态云的云计算前后云特性之间的差异。它表明在播云之前，云是过冷的液相云。播种后，从云状颗粒图像和云状颗粒尺寸分布的观察结果表明，大冰晶颗粒的出现和粒径分布的变宽。因此，云种之后会出现更大，更多的冰晶颗粒，这些颗粒可能会通过碰撞-聚结过程进一步成长为沉淀颗粒。卫星图像进一步显示了播云实验后清楚地形成了降水。这项研究表明，对于过冷的液态云，云播种可以有效地发挥作用。卫星图像进一步显示了播云实验后清楚地形成了降水。这项研究表明，对于过冷的液态云，云播种可以有效地发挥作用。卫星图像进一步显示了播云实验后清楚地形成了降水。这项研究表明，对于过冷的液态云，云播种可以有效地发挥作用。