Aerosol effect on the mobility of cloud droplets
Aerosol effect on the mobility of cloud droplets
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DOI：
10.1088/1748-9326/10/10/104011
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发表时间：
2015-07
影响因子：
6.7
通讯作者：
I. Koren;O. Altaratz;G. Dagan
中科院分区：
文献类型：
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作者：
I. Koren;O. Altaratz;G. Dagan
云滴移动性在这里被称为云滴与环境空气一起移动的能力的量度。我们认为，对流云的气溶胶效应的一个重要组成部分是由液滴流动性的变化。我们表明，质量加权平均液滴终端速度，这里定义为“有效终端速度”（η）和它的蔓延（）？>作为这种影响的直接衡量标准。此外，我们开发的分析估计η和？>为了表明η（ε = /）？>的相对色散的变化，可以作为液滴收集过程开始的敏感预测器。
Cloud droplet mobility is referred to here as a measure of the droplets’ ability to move with ambient air. We claim that an important part of the aerosol effect on convective clouds is driven by changes in droplet mobility. We show that the mass-weighted average droplet terminal velocity, defined here as the ‘effective terminal velocity’ (η) and its spread ( ) ?> serve as direct measures of this effect. Moreover, we develop analytical estimations for η and ?> to show that changes in the relative dispersion of η ( ε = / ) ?> can serve as a sensitive predictor of the onset of droplet-collection processes.