2023年7月24日石家庄机场一次强雷暴大风的特征分析

Analysis on the Characteristics of a Strong Thunderstorm with Strong Wind at Shijiazhuang Airport on July 24, 2023

摘要: 本文利用ERA5再分析资料、石家庄机场多普勒天气雷达和石家庄机场周边自动站等资料，对2023年7月24日发生在石家庄机场的一次雷暴大风的环境条件、雷暴回波特征和地面风场的演变进行了分析。结果表明：本次雷暴大风天气发生在弱垂直风切变，强对流有效位能条件下；在径向速度图上较早地观测到了雷暴大风，地面出现了明显的冷池，雷暴大风出现在地面等温线密集带靠近冷池的一侧。

Abstract: This paper uses ERA5 reanalysis data, Shijiazhuang Airport Doppler weather radar, and automatic stations around Shijiazhuang Airport to analyze the environmental conditions, thunderstorm echo characteristics, and evolution of surface wind fields of a thunderstorm gale that occurred at Shijiazhuang Airport on July 24, 2023. The results show that this thunderstorm gale weather occurred under the conditions of weak vertical wind shear and strong convective available potential energy; thunderstorm gales were observed earlier on the radial velocity map, an obvious cold pool appeared on the ground, and thunderstorm gales occurred on the side of the dense isotherm belt near the cold pool.