The Nonlinear Effective Attenuation Coefficient of Spaceborne Oceanic Lidar Signal Qun Liu, Dong Liu, Jian Bai, Xiaoyu Cui, Yudi Zhou, Peituo Xu, Zhipeng Liu and Xiaobin Wang EPJ Web Conf., 237 (2020) 08022 Published online: 07 July 2020 DOI: 10.1051/epjconf/202023708022