双流机场一次高架雷暴天气过程分析  

Analysis of an Elevated Thunderstorm Weather Event at Shuangliu Airport

作　　者：刘辉权 

机构地区：[1]民航西南空管局气象中心,四川 成都 [2]民航西南空管局航空气象技术研究及应用实验室,四川 成都

出　　处：《自然科学》2025年第2期253-260,共8页Open Journal of Nature Science

摘　　要：基于FNL再分析数据探讨2021年10月4日成都双流机场高架雷暴天气过程的特征与成因。分析表明,该雷暴天气受副热带高压边缘气流驱动,特征包括500 hPa的强风速带诱发的垂直风切变,700 hPa受西南急流偏南风影响,位于急流左侧辐合带,而850 hPa则处于弱辐合与锋区交互区域,地面位于锋面北侧的冷空气中,伴有低层弱逆温,形成了高架雷暴的典型环境。随着夜间西南低空急流的增强与西移,700 hPa暖湿气流沿锋区斜升,加强了垂直上升运动,促使雷暴强度升级。此外,中低层水汽丰富,垂直结构上干下湿,加之显著的水汽输送带与辐合区域,以及大气层结的不稳定性,共同促进了此次强雷暴的发展。雷达观测显示,该雷暴为多单体结构,回波垂直结构随高度倾斜,垂直剖面图上展现出典型的对流单体特征。Based on FNL reanalysis data, this study explores the characteristics and causes of an elevated thunderstorm event that occurred at Chengdu Shuangliu Airport on October 4, 2021. The analysis reveals that this thunderstorm weather was driven by air currents at the edge of the subtropical high. It featured a strong wind speed zone at 500 hPa, which induced vertical wind shear. At 700 hPa, it was influenced by the southwesterly winds of the southwestern jet stream, located in the convergence zone on the left side of the jet. At 850 hPa, it was in an area of weak convergence interacting with a frontal zone, while at the surface, it was positioned in cold air north of the frontal surface, accompanied by a weak temperature inversion in the lower layer, forming a typical environment for an elevated thunderstorm. With the intensification and westward shift of the southwestern low-level jet at night, the warm and moist air at 700 hPa ascended obliquely along the frontal zone, enhancing vertical upward motion and intensifying the thunderstorm. Furthermore, the abundance of water vapor in the middle and lower layers, with a dry upper laye

关 键 词：双流机场 高架雷暴 冷空气 副热带高压 

分 类 号：P458[天文地球—大气科学及气象学]