贵阳机场重级冻雨凝冻天气过程特征分析  

Characteristics Analysis of Freezing Weather Process of Heavy Freezing Rain at Guiyang Airport

作　　者：刘烈霜 Liu Lieshuang(Meteorological Center of Southwest Air Traffic Control Bureau,Chengdu,610200,Sichuan,China)

机构地区：[1]西南地区空管局气象中心,四川成都610200

出　　处：《中国民航飞行学院学报》2023年第5期72-77,共6页Journal of Civil Aviation Flight University of China

摘　　要：本文选取贵阳机场重级冻雨凝冻年中两次典型的天气过程进行客观诊断分析,结果表明:贵阳机场及贵州中部地区持续性强冻雨天气过程有一定共性。高纬区都有明显的“Ω型”阻塞形势存在,中层以西南气(急)流为主,有利于冻雨区持续的水汽输送,低层切变线和地面云贵静止锋长时间存在。由南向北伸展的“暖舌”、“湿舌”脊线几乎重合在一起,显示了降水区温湿一致的特性。低层能量锋区明显,地形对锋区的阻挡作用明显,准静止锋的维持与冻雨的长时间维持密切相关。Two typical freezing weather processes of heavy freezing rain at Guiyang Airport are selected for objective diagnosis and analysis.The results show that there are some commonalities in the process of persistent heavy freezing rain in Guiyang Airport and central Guizhou.There is a clear"Q type"blocking situation in high latitude areas.The middle layer is dominated by southwest airflow or jet stream,which is conducive to the continuous water vapor transport in the freezing rain area.The low level shear line and the ground Yungui stationary front exist for a long time.The ridge lines of"warm tongue"and"wet tongue"extending from south to north are almost coincident with each other,which shows that the temperature and humidity in the rainfall area are consistent.The energy front zone is obvious at low level,and the terrain has obvious blocking effect on the front zone.The maintenance of Yungui quasistationary front is closely related to the long-term maintenance of freezing rain.

关 键 词：贵阳机场 冻雨凝冻 云贵准静止锋 

分 类 号：V321.2[航空宇航科学与技术—人机与环境工程]