Process of A Multiple-Stroke Positive Cloud-to-Ground Lightning and Its Trigger Effect to the Upward Lightning

Shanfeng Yuan1, Xiushu Qie2, Rubin Jiang1, Dongfang Wang1, Zhuling Sun1 and Abhay Srivastava1, (1)Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China, (2)Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Insititute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China