豫北一次夏季雷雨大风过程分析
Analysis of a Summer Thunderstorm in the Northern Henan Province
中文摘要：
利用常规观测资料、自动站加密资料、郑州和濮阳雷达资料、鹤壁站微波辐射计资料等，对2017年6月豫北一次雷雨大风过程进行分析。结果表明，高空冷槽叠加低层暖空气之上造成较强的层结不稳定性，对流沿地面辐合线尾向传播导致对流西南向发展。冷空气入侵对强对流的触发及水汽调节的改善起到重要作用。弱冷空气入侵使地面辐合线得以维持，造成水汽的辐合，有利于水汽的垂直输送，改变整层的水汽分布，增加了空气水汽饱和度。多普勒雷达产品和微波辐射计资料可以较好地用于短时强对流天气的预报预警。
中文关键词：
短时强降水，短时大风，冷空气，水汽条件
KeyWords：
short-time rainfall, short-time gale, cold air, vapor condition
Abstract：
Using conventional observation data, observations from mesoscale automatic weather stations, Doppler radar data from Zhengzhou and Puyang, microwave radiometer data from Hebi, we analyzed a thunderstorm that occurred in Northern Henan in June 2017. The results show that the cold trough at high levels and warm air in lower levels lead to unstabile stratifiation. The convection developed to the southwest and spread backwards along the surface convergence line. Cold air intrusion was an important factor that trigered severe convection and increased the vapor condition. The spread of the weak cold air maintained the surface convergence line, which was conducive to the convergence and vertical transmission of vapor. This can also change the distribution of vapor and increase the vapor saturation. The Doppler radar data and microwave radiometer data should be used for strong convective weather forcasts.