摘要
利用micaps实况资料、风云FY-2C卫星云图以及多普勒雷达资料,对柳州"2012·4·12"强对流天气过程进行了诊断分析,结果表明:此次强对流天气发生在高空槽、低空切变线和地面冷空气共同影响的大环流背景下,高低空急流耦合、槽前正涡度平流以及锋面抬升是此次强对流天气的主要触发机制。锋前暖区生成的中尺度对流云团和锋面云系的南压在不同的地点产生了强对流天气,造成此次强对流天气的强风暴具有超级单体特征。
Based on micaps live data, FY- 2C satellite imagery and doppler radar data, strong eonvecuve weather process of Liuzhou in 12th , April 2012 were analyzed in diagnosis, the results showed that the strong convective weather occurred in the big circulation background of mutual influence between upper trough, low shear line and surface cold air; the coupling of high and low air jet, trough the positive vorticity advection and frontal uplift were main trigger mechanisms of strong convective weather; prefrontal warmer area of mesoscale convective cloud cluster and frontal cloud system produced in different locations on the south of the strong convective weather, the strong convective weather caused by severe storms is characterized by the super monomer.
出处
《气象研究与应用》
2013年第3期22-25,46,I0002,共6页
Journal of Meteorological Research and Application
基金
中国气象局预报员专项CMAYBY2013-052资助
关键词
高低空急流耦合
中尺度云团
超级单体风暴
high and low air jet coupling
mesoscale cloud cluster
super monomer storm
