Yan Ren¹, Hongsheng Zhang², Wei Wei³, Bingui Wu⁴, Jingle Liu⁴, Xuhui Cai² and Yu Song², (1)Peking University, Department of Atmospheric and Oceanic Sciences, Beijing, China, (2)Peking University, Beijing, China, (3)State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China, (4)Tianjin Municipal Meteorological Bureau, Tianjin, China