安庆机场一次寒潮大风天气过程分析  

Analysis of a Cold Wave Gale Weather Process in Anqing Airport

作　　者：谷思雨 王跃 王晨光 丰文斌 周雪华 

机构地区：[1]民航气象中心,北京 [2]民航安庆机场,安徽 安庆

出　　处：《气候变化研究快报》2021年第3期254-259,共6页Climate Change Research Letters

摘　　要：利用环流形势和地面观测资料对2019年11月17日至18日安庆机场出现的寒潮大风天气过程进行天气学分析,结果表明:这次寒潮天气是在高空倒Ω流型的环流背景下,乌拉尔山暖脊前部的偏北气流引导强冷空气在横槽内聚积。横槽转竖引导寒潮爆发,寒潮冷锋沿着西北路径南下影响我区。强的冷平流,地面大的气压梯度、变压梯度,高空风动量下传,北高南低的气压场形势和地形影响是安庆机场寒潮大风发生的原因。3小时变压是预测这次寒潮大风的良好指标。Based on the circulation situation and ground observation data, the synographic analysis of the cold wave gale weather process at Anqing Airport on November 17, 2019 was carried out. The results show that the cold wave weather was under the background of the circulation pattern of inverted Ω, and the strong cold air was accumulated in the horizontal trough under the guidance of the northerly airflow at the front of the Ural Mountains warm ridge. Transverse trough to vertical guide cold wave outbreak, cold wave cold front along the northwest path southward affecting the region. The strong cold advection, the large pressure gradient and the variable pressure gradient on the ground, the downward transmission of wind momentum in the upper air, the high pressure field in the north and low in the south and the topographic influence are the reasons for the occurrence of the cold wave gale in Anqing. The 3-hour variable pressure is a good indicator to predict the strong wind in this cold wave.

关 键 词：安庆机场 寒潮大风 变压 

分 类 号：P45[天文地球—大气科学及气象学]