论文标题
在沉淀水星及其对气溶胶激活的影响之后过饱和
Supersaturation in the Wake of a Precipitating Hydrometeor and its Impact on Aerosol Activation
论文作者
论文摘要
气溶胶的二次激活会影响云的生命周期。对于可靠的气候预测，必须进行详细的理解。最近的实验室实验表明，在沉淀水星后，可以激活气溶胶。但是，这种唤醒引起的激活的许多定量方面尚不清楚。在这里，我们报告了对唤醒诱导的过饱和激活潜力的详细数值研究。通过Lagrangian对气溶胶的跟踪，我们表明，在过饱和的唤醒中激活了大量的气溶胶。这些“幸运的气雾剂”被夹在尾流的涡旋中，并居住在足够长的超饱和环境中，以受激活。我们的分析表明，唤醒引起的激活可以在类似于其他知名的二级生产过程的水平上贡献。
The secondary activation of aerosols impacts the life cycle of a cloud. A detailed understanding is necessary for reliable climate prediction. Recent laboratory experiments demonstrate that aerosols can be activated in the wake of precipitating hydrometeors. However, many quantitative aspects of this wake-induced activation remain unclear. Here, we report a detailed numerical investigation of the activation potential of wake-induced supersaturation. By Lagrangian tracking of aerosols we show that a significant fraction of aerosols are activated in the supersaturated wake. These 'lucky aerosols' are entrained in the wake's vortices and reside in the supersaturated environment sufficiently long to be activated. Our analyses show that wake-induced activation can contribute at a level similar to other well known secondary production processes.
