Microstructure of cirrus clouds observed by HYVIS
Microstructure of cirrus clouds observed by HYVIS
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HYVIS观测到的卷云微观结构
DOI：
10.1016/0169-8095(94)90055-8
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Y. Yamada
中科院分区：
文献类型：
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作者：
H. Mizuno;T. Matsuo;M. Murakami;Y. Yamada
1989年6月在日本筑波用一种特殊的探空仪-水凝物视频探空仪（HYVIS）对卷云进行了现场观测。HYVIS提供了7 μm ~ 1cm大小的云粒子的直接无线电图象，它观测了从地面暖锋和静止锋向北延伸的3个卷层云。云底和云顶分别约为7公里（−20°C）和13公里（−60°C）。它们不含云滴，由10 μm至1.5 mm大小的冰晶组成。冰晶的浓度约为105 m −3。大多数冰晶是柱状和子弹状的，提供了22°的光晕。结果表明，冰晶是在10 cm s-1的天气尺度上升气流中沉积生长的，为卷云的组成和结构提供了有用的信息。
In situ observations of cirrus clouds were carried out using a special sonde, the hydrometeor videosonde (HYVIS), at Tsukuba, Japan, in June 1989. The HYVIS provided direct images of cloud particles of 7 μm to 1 cm in size by radio.The HYVIS observations were made of three cirrostratus clouds extended northward portion from the surface warm and stationary fronts. The cloud base and cloud top were about 7 km (−20°C) and 13 km (−60°C), respectively. They contained no cloud droplets and were composed of ice crystals of 10 μm to 1.5 mm in size. The concentrations of ice crystals were about 105m−3. Most of the ice crystals were column and bullet types, providing the 22° halo. It is suggested that the ice crystals grew by deposition in a synoptic scale updraft region up to 10 cm s−1.The results provided an useful information about composition and structure of cirrus clouds.