摘要
对２０００－０５－１１河南省出现的雷雨大风、冰雹天气的影响系统、稳定度参数、高空风切变、３θ曲线、云中负温区、雷达回波特征分析结果表明：下滑槽及西路冷空气为强对流天气提供了动力条件；低层高温、高湿及低层暖平流、高层冷平流，为强对流提供了层结条件；高空风的垂直切变有利于对流天气的加强和维持。强对流天气在速度场上表现为中尺度辐合线、风向风速辐合区、风速辐合区、大风区等中尺度系统。
With the data of the hailstorm, thunder and gale that occur in 05/11/2000, By analyzing the degree of stability, wind shear of upper air, the three θ table, the area of negative temperature in the wind, and the characteristic of echo, results show that the katabatic trough line, and the cold air given the dynamic condition for strong convectional weather to form. The high temperature, the high moisture and the warm advection in low air come on with the cold advection in upper air given the stratification condition and the oriental wind shear makes the convection weather gonging on. It comes on with some mesoscale system, such as mesoscale convergence line wind shear, gale area and so on.
出处
《河南气象》
2001年第4期8-10,共3页
Meteorology Journal of Henan
