基于雷达资料的海北雷电特征分析及预警研究

Analysis of Lightning Characteristics and Early Warning Research in Haibei Based on Radar Data

摘要: 文章选取2021年海北州国家站历史雷电资料及海北州雷达站雷达产品资料，结合同期海北高空资料，研究了海北州雷电天气与雷达反射率因子、回波顶高、垂直液态水含量、速度场雷达产品及SI沙氏指数、IQ整层比湿积分、LI抬升指数和SRH风暴相对螺旋度高空参数的特征关系，对雷电天气的雷达产品及高空资料指标进行统计分析，得出了海北地区夏季雷电预报因子，建立了雷电发生概率的多元回归方程，提高了海北强对流天气预报预警的及时性和准确率。

Abstract: In this paper, by selecting the historical lightning data of Haibei National Station and the radar product data of Haibei Radar Station in 2021, combined with the high altitude data of Haibei in the same period, the characteristic relationship between lightning weather and radar reflectance factor, echo top height, vertical liquid water content, velocity field radar products, SI Sand index, IQ layer specific humidity integral, LI uplift index and SRH storm-relative helicity upper altitude parameters in Haibei was studied. The radar products and upper altitude data indexes of lightning weather were statistically analyzed, and the summer lightning forecast factors in Haibei region were obtained, the multiple regression equation of lightning occurrence probability was established and the timeliness and accuracy of severe convection weather early warning in Haibei were improved.