2023年12月22日,山东威海,农历冬至,“雪窝”山东威海暴雪持续加剧,自19日夜开始已经持续三天三夜,积雪厚度超过70厘米,打破山东积雪深度54厘米的纪录,持续低温造成道路积雪结冰,严重影响交通出行。
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2023年12月22日,“雪窝”山东威海暴雪持续加剧。
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什么是冷流雪?
据山东省烟台市气象局介绍,烟台和威海作为典型的海滨城市,由于冬天降雪较多,形成了独特的海滨雪城风貌,被称为“中国雪窝”。且两个城市的降雪以冷流雪为主,占总降雪日数的比例高达80%以上。烟台莱山机场气象统计资料显示,当地冷流雪年平均日数在39天左右。
冷流雪也被称为冷平流降雪,是由于冬季黄海与渤海相对于内陆温暖而湿润,强冷空气经过暖海面,被加热加湿,到达山东半岛北部地区,被山东半岛中部丘陵地形阻挡,空气逐渐饱和且在山脉以北堆积,形成了长时间的降雪。因此,这种降雪又被称为海效应降雪。
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