高空冷涡
高空冷涡-
高空冷涡飑线群的中尺度分析
The mesoanalysis of a group of squall line under the cold vortex
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而当高空冷涡发展为较对称的深厚气旋时，处于冷涡南侧的山东地区则不会出现强对流天气。
Otherwise if the upper cold vortex developed into a symmetrical and deep cyclone , no hail shooting will occur in Shandong at the south of the cold vortex .
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结果表明：黑昼现象出现的主要原因是高空受东北冷涡控制，东北冷涡底部干冷空气与暖湿东南气流汇合，在大连地区上空形成了强降水超级单体。
The results showed that the main reasons of the " Dark Day " included the northeast cold vortex in high altitude , the dry and cold air in the bottom of northeast cold vortex , the warm and humid southeast air current .