100微米以下的冰晶的下落速度
The fall speeds of sub-100 micron ice crystals
摘要：
本文给出了尺寸小于100 $μ$ m的实际冰晶的沉积速率的估计。这些计算，利用新的结果的电容的冰晶，与实验室研究进行了比较，发现是在良好的协议。结果突出了一个弱点，在当代冰粒下降速度参数化非常小的晶体，这可能导致沉积速率被高估了两倍。本文所用的理论方法也可用于计算非球形气溶胶粒子的沉积速率和迁移率。
英文摘要：
Estimates for the sedimentation rate of realistic ice crystals at sizes smaller than 100 $μ$m are presented. These calculations, which exploit new results for the capacitance of ice crystals, are compared with laboratory studies and found to be in good agreement. The results highlight a weakness in contemporary ice particle fall speed parameterisations for very small crystals, which can lead to sedimentation rates being overestimated by a factor of two. The theoretical approach applied here may also be useful for calculating the sedimentation rate and mobility of non-spherical aerosol particles.
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