摘要
为了做好雷暴大风的监测预警工作,文章使用江西雨量、风向、风速等气象观测数据、“天衍”综合气象观测产品系统雷达拼图等数据,对2024-03-31凌晨鹰潭市雷暴大风过程进行分析。结果表明:鹰潭市雷暴大风主要出现在3月31日凌晨05:00,1 h内有23站风力达8级或以上,鹰潭国家站风力最大(27 m/s),大风影响范围广、强度大、致灾风险高;主要影响系统有高空低槽、中低层切变线、低空急流、地面辐合线等,“上干下湿”“上冷下暖”、低层辐合、高层辐散、高的对流有效位能值为雷暴大风等强对流天气的发生、发展提供了较好的动力、热力条件;飑线尺度大、强度强,发展形成显著的“弓”形回波,鹰潭等地受到“弓”形飑线头部超级单体影响,出现冰雹和极端大风。研究结果为鹰潭雷暴大风天气的监测预警提供了分析依据。
In order to do a good job in monitoring and early warning of thunderstorms and strong winds,meteorological observation data such as rainfall,wind direction,and wind speed in Jiangxi Province,as well as radar mosaic data from the"Tianyan"comprehensive meteorological observation product system,were used to analyze the thunderstorm and strong wind process in Yingtan City in the early hours of March 31,2024.The results showed that thunderstorm and strong winds mainly occurred at 05:00 am on March 31,and 23 stations had wind speeds of level 8 or above within 1 hour.Yingtan National Station had the highest wind speed(27 m/s),with a wide impact range,high intensity,and high risk of disaster;The main influencing systems include high-altitude trough,middle and low-level shear lines,low-level jet streams,ground convergence lines,etc.The"dry up and wet down","cold up and warm down",low-level convergence,high-level divergence,and high convective effective potential energy provide good driving and thermal conditions for the occurrence and development of severe convective weather such as thunderstorms and strong winds.The scale and intensity of the squall line are large,and it develops into a significant"bow"shaped echo.Areas such as Yingtan are affected by the supercell at the head of the"bow"shaped squall line,resulting in hail and extreme winds.The research results provide analytical basis for monitoring and warning of thunderstorm and strong wind weather in Yingtan.
作者
杨洁
余剑浩
陈宏祥
Yang Jie;Yu Jianhao;Chen Hongxiang(Yingtan Meteorological Bureau,Yingtan 335000)
出处
《气象水文海洋仪器》
2025年第2期32-36,共5页
Meteorological,Hydrological and Marine Instruments
基金
鹰潭市气象局2022年科研项目“鹰潭市大风的特征分析”(YTKY2022060001)资助。
关键词
鹰潭
雷暴大风
形势特点
回波特征
Yingtan
thunderstorms and gale
characteristics of the situation
echo characteristics
作者简介
杨洁(1995-),女,大学,助理工程师。主要从事天气预报工作。
