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本文分析了2013年-2015年首都机场多段雷雨天气过程:多段雷雨发生时,系统较为深厚,500百帕多受低涡或高空槽影响,700百帕及850百帕以高空槽系统为主;中低层更注重暖湿气流的持续输送;850百帕均为受偏南气流控制,风速以6-8米/秒为主,700百帕多为受西南气流控制,风速以达到西南急流级别为主。多段雷雨时,700百帕、850百帕多受暖区控制,500百帕存在弱冷空气或正涡度平流。
This paper analyzes the multi-stage thunderstorm process at Capital International Airport from 2013 to 2015. When multiple thunderstorms occur, the system is relatively deep with 500 hPa being affected by the low vortex or the upper trough. The system is dominated by high-altitude troughs of 700 hPa and 850 hPa. The middle and lower floors pay more attention to the continuous delivery of warm and humid air; the 850-hectare are controlled by the southerly airstream with a wind speed of 6-8 m / s; the 700-hectopascal is controlled by the southwest airstream; the Lord. Multi-stage thunderstorms, 700 hectopascals, 850 hectopascals controlled by the warm area, 500 hPa there is weak cold air or positive vorticity advection.