对流成熟与降雨的形成
Convective Ripening and Initiation of Rainfall
摘要：
本文讨论了瑞利-贝纳德池中气包液气溶胶液滴尺寸分布的演化。它引入了一种非碰撞模型，用于扩大液滴尺寸分布，称为“对流成熟”。本文还考虑了无冰积云降雨的起始。有人认为，虽然碰撞机制不能解释生产的雨从云与水滴直径$20\ μ{\rm m}$，非碰撞对流成熟机制提供了一个更快的路线，以增加小部分的水滴，成长为雨滴的大小。
英文摘要：
This paper discusses the evolution of the droplet size distribution for a liquid-in-gas aerosol contained in a Rayleigh-Bénard cell. It introduces a non-collisional model for broadening the droplet size distribution, termed 'convective ripening'. The paper also considers the initiation of rainfall from ice-free cumulus clouds. It is argued that while collisional mechanisms cannot explain the production of rain from clouds with water droplet diameters of $20\ μ{\rm m}$, the non-collisional convective ripening mechanism gives a much faster route to increasing the size of the small fraction of droplets that grow into raindrops.
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