摘要
本文基于高空、地面观测、卫星云图及中尺度再分析等多源数据,对2023年5月27日黑龙江省五常市中部突发的一次多单体强对流天气过程进行诊断分析。研究显示,此次强对流天气由低涡后部冷空气南下与西南暖湿气流交汇触发,高空急流与地面冷锋共同作用形成强烈垂直不稳定层结,促使中尺度对流云团发展。卫星及雷达观测表明,多单体呈带状快速移动,冷池出流与列车效应导致局地出现10级大风及短时暴雨。EC模式剖面揭示冷暖气团叠加及垂直上升运动加剧对流发展,而数值模式未能提前捕捉其突发性特征。
Based on multi-source data such as upper-air and ground observations,satellite cloud images,and mesoscale reanalysis,this paper diagnoses and analyzes the sudden multi-cell severe convective weather process in the central part of Wuchang City,Heilongjiang Province on May 27,2023.The results show that the severe convective weather is triggered by the southward convergence of the cold air behind the vortex and the warm and humid airflow from the southwest,and the upper-level jet stream and the surface cold front work together to form a strong vertical unstable stratification,which promotes the development of mesoscale convective clouds.Satellite and radar observations show that many cells move rapidly in a band,and the outflow of cold pools and the train effect lead to local gale force winds of level 10 and short-term heavy rain.The EC model profile reveals that the superposition of cold and warm air masses and vertical upward motion intensify the convective development,while the numerical model fails to capture its abruptness in advance.
作者
沈月钊
李有缘
林嘉楠
王梅
王付华
于涵
杨结
佟彦伯
SHEN Yue-zhao;LI You-yuan;LIN Jia-nan;WANG Mei;WANG Fu-hua;YU Han;YANG Jie;TONGYan-bo(Wuchang Meteorological Bureau,Heilongjiang Wuchang 150200;Heilongjiang Meteorological Observatory,Heilongjiang Harbin 150030;Heilongjiang Meteorological Data Center,Heilongjiang Harbin 150030;Daxinganling Regional Meteorological Bureau,Heilongjiang Jiagedaqi 165300;Mohe Meteorological Bureau,Heilongjiang Mohe 165399;Heilongjiang Airport Group,Heilongjiang Harbin 150000)
出处
《黑龙江气象》
2025年第2期8-11,共4页
Heilongjiang Meteorology
关键词
多单体
边界层急流
冷池
Multi-cell
Boundary layer jet
Cold pool
