Convective clouds produce a significant proportion of the global precipitation and play an important role in the energy and water cycles. We quantify changes of the convective cloud ice mass-weighted altitude centroid (Z_IWC) as a function of aerosol optical thickness (AOT). Analyses are conducted in smoke, dust and polluted continental aerosol environments over South America, Central Africa and Southeast Asia, using the latest measurements from the CloudSat and CALIPSO satellites. We find aerosols can inhibit or invigorate convection, depending on aerosol type and concentration. On average, smoke tends to suppress convection and results in lower Z_IWC than clean clouds. Polluted continental aerosol tends to invigorate convection and promote higher Z_IWC. The dust aerosol effects are regionally dependent and their signs differ from place to place. Moreover, we find that the aerosol inhibition or invigoration effects do not vary monotonically with AOT and the variations depend strongly on aerosol type. Our observational findings indicate that aerosol type is one of the key factors in determining the aerosol effects on convective clouds.

中文翻译：

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不同类型气溶胶对深对流云的影响对比。

对流云产生了全球降水的很大一部分，并在能量和水循环中发挥着重要作用。我们将对流云冰质量加权高度质心（Z _IWC）的变化量化为气溶胶光学厚度（AOT）的函数。使用 CloudSat 和 CALIPSO 卫星的最新测量结果，对南美洲、中非和东南亚的烟雾、灰尘和污染的大陆气溶胶环境进行了分析。我们发现气溶胶可以抑制或促进对流，具体取决于气溶胶类型和浓度。平均而言，烟雾往往会抑制对流，导致 Z _IWC低于干净的云。受污染的大陆气溶胶往往会增强对流并促进更高的 Z _IWC。沙尘气溶胶的影响因地区而异，其迹象因地而异。此外，我们发现气雾剂抑制或增强效果并不随 AOT 单调变化，并且变化很大程度上取决于气雾剂类型。我们的观测结果表明，气溶胶类型是决定气溶胶对对流云影响的关键因素之一。