1. National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China
2. Shenhua Environment Remote Sensing and Monitoring Center, Shenhua Geological Exploration Company, Beijing 102211, China
3. Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China
4. State Key Laboratory of Pollution Control & Resource Reuse and School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
5. NICE America Research, 2091 Stierlin Ct, Mountain View, California 94043, United States