论文标题
在混合相云中温暖的水星的冰 - 无核潜力上
On the ice-nucleating potential of warm hydrometeors in mixed-phase clouds
论文作者
论文摘要
云中温暖的水星是否存在在新冰颗粒的成核中发挥重要作用的问题已有几十年了。福生和李（Fukuta and Lee，1986）和贝克（Baker，1991）的早期作品表明，这可能是无关紧要的，但对Prabhakaran等人的最新研究。 （2019）[Arxiv：1906.06129]另有建议。在这项工作中，我们旨在使用单个水材周围的高保真流量模拟技术来量化冰 - 核势，并使用有利的考虑来将效果提高到云中的冰颗粒集合。虽然我们发现在温暖的水星的附近可能会增强冰成核的数量级，并且受影响的空气量比以前估计的大得多，但仅由于初始冰浓度低而导致在某些类型的云中观察到的冰成核的快速增强，因此，仅此作用就很难迅速增强冰核的快速增强。尽管如此，建议在现有的云模型中实施这种效果，以研究冰川发作后的二阶效应，例如冰核预活化或增强。
The question whether or not the presence of warm hydrometeors in clouds may play a significant role in the nucleation of new ice particles has been debated for several decades. While the early works of Fukuta and Lee (1986) and Baker (1991) indicated that it might be irrelevant, the more recent study of Prabhakaran et al. (2019) [arXiv:1906.06129] suggested otherwise. In this work, we are aiming to quantify the ice-nucleating potential using high-fidelity flow simulation techniques around a single hydrometeor and use favorable considerations to upscale the effects to a collective of ice particles in clouds. While we find that ice nucleation may be enhanced in the vicinity of a warm hydrometeor by several orders of magnitude and that the affected volume of air is much larger than previously estimated, it is very unlikely that this effect alone causes the rapid enhancement of ice nucleation observed in some types of clouds, mainly due to the low initial volumetric ice concentration. Nonetheless, it is suggested to implement this effect into existing cloud models in order to investigate second-order effects such as ice nucleus preactivation or enhancement after the onset of glaciation.
