Aggregate Terminal Velocity/Temperature Relations
Aggregate Terminal Velocity/Temperature Relations
复制标题
总终端速度/温度关系
DOI：
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复制
发表时间：
2008
期刊：
影响因子：
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通讯作者：
M. Schönhuber
中科院分区：
文献类型：
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作者：
E. Brandes;K. Ikeda;G. Thompson;M. Schönhuber
摘要用地面二维视盘测定仪研究了科罗拉多州东部锋面山脉风暴中积雪集合体的终端速度。计算了当量体积直径为0.5-20 mm的颗粒在−1°、−5°和−10°C温度下的幂定律关系。与文献中发现的关系的比较表明，温度依赖关系可以替代基于聚集组成(例如，板、柱或树枝)和肋化程度的关系。
Abstract Terminal velocities of snow aggregates in storms along the Front Range in eastern Colorado are examined with a ground-based two-dimensional video disdrometer. Power-law relationships for particles having equivalent volume diameters of 0.5–20 mm are computed for the temperatures −1°, −5°, and −10°C. Fall speeds increase with temperature. Comparison with relationships found in the literature suggests that temperature-dependent relations may be surrogates for relations based on aggregate composition (e.g., plates, columns, or dendrites) and the degree of riming.