Aircraft measurements of wave clouds
Aircraft measurements of wave clouds
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DOI：
10.5194/acp-12-9881-2012
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发表时间：
2012-01-01
影响因子：
6.3
通讯作者：
Choularton, T.
中科院分区：
文献类型：
--
作者：
Cui, Z.;Blyth, A. M.;Choularton, T.
本文介绍了在英国苏格兰上空形成的温度高于-5摄氏度的液态(无冰)波云的飞机测量结果。波云垂直速度的水平变化具有明显的模式特征。最大上升气流出现在云层的上切面，最强的下沉气流出现在下切面。云滴浓度为每立方厘米几百个，平均直径一般在15-45微米之间。有一小部分是毛毛雨。本文和之前的研究表明，波动云中的动力学和微观物理相互作用与公认的模型不同。本文的研究结果为今后波浪云的数值模拟以及波浪与云的相互作用提供了一个实例。
In this paper, aircraft measurements are presented of liquid phase (ice-free) wave clouds made at temperatures greater than -5 degrees C that formed over Scotland, UK. The horizontal variations of the vertical velocity across wave clouds display a distinct pattern. The maximum updraughts occur at the upshear flanks of the clouds and the strong down-draughts at the downshear flanks. The cloud droplet concentrations were a couple of hundreds per cubic centimetres, and the drops generally had a mean diameter between 15-45 mu m. A small proportion of the drops were drizzle. The measurements presented here and in previous recent studies suggest a different interaction of dynamics and microphysics in wave clouds from the accepted model. The results in this paper provide a case for future numerical simulation of wave cloud and the interaction between wave and cloud.