摘要
利用加密地面观测资料、常规观测资料、分析场资料和雷达回波资料分析,对3月19日—20日凌晨的一次闽北强对流天气过程进行分析。分析结果表明:上空急流强度大且滞留时间长,并伴有高空辐散(200 hpa急流轴右侧,高层辐散区内)时为强对流天气的发展提供了良好的抽气作用和通风作用;由于许多倾斜对流过程的高层辐散不一定处在强对流区的上空,但只要形成垂直环流也同样有利于强对流过程发生;雷达回波对监测强对流天气发生的种类、落区、强度具有较好的参考作用。
This paper did analysis on strong convective weather process on March 19-20 in the morning in northern Fujian province by using encryption ground observation data, the conventional observation data, field data analysis and radar echo data. The results show that Big Rapids over the strength and long residence time, and accompanied by high altitude di- vergence （right 200hpa jet axis, upper-level divergence area） when a strong convective weather development provides a good suction effect and ventilation effect; Since many tilt convection processes in the upper-level divergence is not necessarily strong convection over the region, but as long as the formation of a vertical circulation is also conducive to strong convective processes occurrence; radar echo having a strength better references to monitor species, drop zone and the intensity of strong convective weather.
出处
《农业技术与装备》
2016年第3期19-21,25,共4页
Agricultural Technology & Equipment
关键词
闽北
强对流
过程分析
Northern Fujian province, Strong convection, Process analysis
