摘要
利用EC 1°×1°再分析资料、多普勒雷达资料及常规气象观测资料等,对2018年3月30-31日发生在贵州省安顺市的伴有10级大风的冰雹天气过程进行分析。结果表明:此次强对流天气发生在"上干冷,下暖湿"的不稳定层结中,中高层的低涡、低层切变线和地面辐合线是其主要影响系统;降雹区域大气低层的湿热能条件好,在雷暴发生前中层有干冷空气向下入侵,使大气层结不稳定度增强,为强对流的产生提供了有利条件。
By using EC 1°×1° reanalysis data,Doppler radar data and conventional meteorological observation data,the hail weather process accompanied by a 10-level gale in Anshun City of Guizhou Province from March 30 to31,2018 was analyzed. The results showed that the strong convective weather occurred in the unstable stratification that dry and cold in upper level,warm and humid in lower level. The low eddy,low shear line and ground convergence line in the middle and upper levels were the main influencing systems. The humid and heat energy conditions in the lower atmosphere were good in the hailstorm area. Before thunderstorms occurred,dry and cold air intruded downward in the middle layer,which increased the instability of atmospheric stratification and provided preferential conditions for the generation of strong convection.
作者
曾妮
方鹏
胡建龙
胡秋红
方怡瑾
邓安
ZENG Ni(Anshun Meteorological Bureau,Anshun,Guizhou 561000)
出处
《农业灾害研究》
2019年第4期77-78,共2页
Journal of Agricultural Catastrophology
关键词
冰雹
大风
暴雨
Hail
Gale
Rainstorm
