Potential of Raman Lidar for Profiling of Methane Mixing Ratio in the Lower Troposphere Igor Veselovskii, Philippe Goloub, Qiaoyun Hu, Thierry Podvin and Mikhail Korenskiy EPJ Web Conf., 237 (2020) 03024 Published online: 07 July 2020 DOI: 10.1051/epjconf/202023703024