首页|2022年4月25-26日宜春南部暴雨过程分析

2022年4月25-26日宜春南部暴雨过程分析

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对 2022 年 4 月 25-26 日宜春市南部一次暴雨过程进行分析.结果表明:强降雨主要发生在暖区中,高空槽携带冷空气南下与副高西北侧暖湿气流在宜春交汇是此次暴雨的环流背景,高空槽携带干冷空气入侵、中低层位置接近的切变线、强盛西南急流、高低空急流耦合及地面辐合线是此次暴雨主要影响系统,地面辐合线是宜春南部暴雨触发系统.本次暴雨过程雷达回波以低质心、高效率强回波为主,在宜春南部一线生消发展造成明显"列车效应".本次锋面降水,大尺度模式对系统位置及移速预报偏差较大,中尺度模式对降水强度及落区把握较好,捕捉到的一些信息可在日常预报中结合参考.
Analysis of Rainstorm Process in Southern Yichun During April 25-26,2022
The process of a rainstorm in the south of Yichun City on April 25-26,2022 was analyzed.The results show that:Heavy rainfall mainly occurs in the warm region.The circulation background of this rainstorm is that the upper trough carries cold air southward and the warm and humid air to the northwest of the subtropical high intersects in Yichun.The upper trough carries cold and dry air intrusion,the shear line close to the middle and low levels,the strong southwest jet,the coupling of the high and low air jet and the surface convergence line are the main influencing systems of this rainstorm.The ground convergence line is the rainstorm triggering system in the south of Yichun.The radar echoes in this rainstorm process are mainly low-quality core,high-efficiency and strong echoes,which cause obvious"train effect"in the development of the southern line of Yichun.In this frontal precipitation,the large-scale model has a large deviation in the forecast of the system position and moving speed,while the mesoscale model has a better grasp of the precipitation intensity and falling area.Some of the captured information can be combined with reference in daily forecast.

rainstormtrain effectmodel predictability

何书情、吴燕良、邓京

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江西省宜春市气象局,江西 宜春

暴雨 列车效应 模式可预报性

2024

科学技术创新
黑龙江省科普事业中心

科学技术创新

影响因子:0.842
ISSN:1673-1328
年,卷(期):2024.(10)
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