气象2025，Vol.51Issue(9)：1101-1112,12.DOI:10.7519/j.issn.1000-0526.2024.123001
天津机场一次极端雷暴大风过程的多尺度特征分析
Multi-Scale Characteristics Analysis of an Extreme Thumderstorm Gale Event at Tianjin Airport
摘要
Abstract
This study examines the multi-scale processes responsible for an extreme thunderstorm gale event(peak wind speed 31.5 m·s-1)that occurred at Tianjin Airport on 4 August 2013.The study focus is on the synoptic background,structural characteristics of the storm,and dynamical mechanisms of the extreme wind.The results show that this event developed within a post-trough unstable environment,characterized by a pronounced dry layer in the mid-troposphere and moisture concentration below 925 hPa.Convective available potential energy exceeding 3000 J·kg-1,coupled with strong 0-6 km vertical wind shear and steep temperature lapse rates in the boundary layer,established a favorable environment for thunderstorm gales.The damaging winds originated from a squall line propagating rapidly from northwest to southeast.The passage of its leading gust front triggered the initial wind surge,while subsequent extreme winds dur-ing the second phase resulted from a downburst generated by an intensifying multi-cell storm embedded in the squall line.Both the squall line and downburst exhibited significant mobility,with precipitation-in-duced evaporative cooling,hydrometeor loading,and mid-level convergence identified as primary drivers for the downburst formation.关键词
雷暴大风/多尺度特征/下击暴流/阵风锋Key words
thumderstorm gale/multi-scale characteristic/downburst/gust front分类
天文与地球科学引用本文复制引用
孙一昕,张楠..天津机场一次极端雷暴大风过程的多尺度特征分析[J].气象,2025,51(9):1101-1112,12.基金项目
全国暴雨研究开放基金(BYKJ2024M05)资助 （BYKJ2024M05）
