摘要
2010年9月4日凌晨,豫西地区出现罕见的强对流天气过程,造成严重损失。利用1°×1°的NCEP再分析资料、常规观测资料、卫星观测资料以及多普勒雷达资料,对此次过程进行诊断分析。结果表明,此次强对流天气过程中不仅具有明显的低层辐合、高层辐散的气流垂直运动,而且在多普勒雷达上有明显的辐合型中气旋存在。通过对垂直积分液态水的分析发现,VIL值存在快速增大和降低的过程,与冰雹和大风的发生时间相一致。在对云顶亮温的分析中发现,强对流天气过程发生在云顶亮温等值线密集处。
The severe convective weather appeared in the west of Henan province on September 4,2010 leaded to great losses;the diagnostic analysis is made by using the data of NCEP reanalysis,conventional observation,satellite and Doppler weather radar.The results show that there were evident convergence at lower layer and divergence at high layer in the vertical motion of the flow,there were convergent mesocyclone at the Doppler weather radar images.The quick increase and decrease of the VIL value was consistent with the occurrence of the hail and strong wind.The analysis of the black body temperature shows that,the severe convective weather occurred in the dense area of the black body temperature isoline.
出处
《气象与环境科学》
2011年第1期67-72,共6页
Meteorological and Environmental Sciences
基金
河南省气象局科学技术研究项目(Z201005)资助
关键词
强对流
垂直运动
中气旋
云顶亮温
VIL
severe convection
vertical motion
mesocyclone
black body temperature
VIL
