摘要
文章利用常规气象探测资料、雷达资料、自动站等多源资料,对2022年7月5日至6日发生在漳州市中南部沿海的大暴雨过程进行分析。结果表明:(1)台风“暹芭”外围环流、低空急流维持、边界层辐合维持是此次沿海大暴雨的主要影响系统;(2)低空急流为强降水提供了源源不断的水汽输送,配合特殊地形的摩擦、强迫作用,在诏安、云霄境内形成了明显增幅作用;(3)降水回波呈现明显“列车效应”,且回波方向平行于移动方向,低质心和最大反射率因子高度低的特征说明此轮降水属于热带海洋型降水。
Based on the conventional meteorological detection data,radar data,automatic station and other sources,the process of heavy rain occurred in the central and southern coastal areas of Zhangzhou from July 5 to 6,2022 is analyzed.The results show that:(1)Typhoon"Chaba"peripheral circulation,low altitude jet stream maintenance,boundary layer convergence maintenance are the main influence system of the coastal rainstorm;(2)The low altitude jet provides continuous water vapor conditions for heavy precipitation,and with the friction and forcing effect of the special terrain,it has formed an obvious increase effect in Zhao'an and Yunxiao;(3)The precipitation echo shows a clear"train effect",and the echo direction is parallel to the direction of movement.The characteristics of low centroid and low maximum reflectivity factor indicate that this round of precipitation belongs to the tropical ocean type precipitation.
出处
《大众科技》
2023年第12期33-36,共4页
Popular Science & Technology
关键词
大暴雨
台风“暹芭”
低空急流
边界层辐合
heavy rainstorm
typhoon"Chaba"
low altitude jet
boundary layer convergence
