Observation of Ice Crystal Formation in Lower Arctic Atmosphere
Observation of Ice Crystal Formation in Lower Arctic Atmosphere
复制标题
北极低层大气中冰晶形成的观测
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
K. Sakurai
中科院分区：
文献类型：
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作者：
T. Ohtake;K. Jayaweera;K. Sakurai
摘要 在极地地区，无论是偏远地区还是人口稠密地区，都可以观察到晴空冰晶或钻石尘埃的显示；当温度降至-20°C并且存在丰富的水蒸气源时。在北极偏远地区，这些冰晶被限制在最低 1000 米处，即海冰中开放管道的背风处。晶体总是出现在冰和水饱和度之间的空气中，并且比冰饱和度更干燥的空气通常覆盖在显示屏上。在人口稠密地区，水蒸气由人造来源提供，例如供热厂。对这些冰晶的形态学研究表明，它们首先凝结成水滴，然后冻结而形成。
Abstract Clear sky ice crystals or diamond dust displays are observed in polar regions, both remote and populated; when the temperature falls to −20°C and where abundant sources of water vapor are present. In remote areas of the Arctic, these ice crystals are confined to the lowest 1000 m, leeward of open leads in the sea ice. The crystals always occur in air between ice and water saturation, and air dryer than ice saturation normally overlies the display. In populated regions, water vapor is supplied from man-made sources such as heating plants. Morphological studies of these ice crystals suggest that they are formed first by condensation into water droplets and then by freezing.