摘要
利用天气图分析方法，通过MICAPS、自动站资料和多普勒雷达资料，对2013年8月1日驻马店的强天气过程进行分析。结果表明：该次强降水过程是在低槽东移、副高边缘的形势下，由中低层切变线、低空急流、地面横切、地面风场切变共同作用影响。强对流天气发生时段低层水汽辐合跃增，配合，在强对流区上空建立深厚的湿层。过程前期处在副高边缘，这为强降水的发生积聚了大量不稳定的能量。同时大的CAPE值和 K指数，也体现出较强的不稳定性。
Abstract
According to the method of weather map analysis, the strong convective weather process on August 1, 2013 was analyzed by using MI-CAPS, automatic station data and doppler radar data .It was found that the strong process was influenced by the lower shear line , the low level jet, the ground transverse shear line and the ground wind shear under the situation of low trough eastward located in the edge of subtropical anti-cyclone.Lower water vapor convergence increased abruptly when the strong convective weather occurred , resulting deep layers of wet over the strong convection zone. It was at the edge of subtropical high in the early stage of the process , which accumulated a lot of unstable energy for the heavy rain.In addition, big CAPE value and index K also reflected the strong instability.
国家科技期刊平台
NSTL
维普
万方数据