1. School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University , Beijing 100084 , People’s Republic of China
2. State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex , Beijing 100084 , People’s Republic of China
3. Beijing Laboratory of Environmental Frontier Technologies, School of Environment, Tsinghua University , Beijing 100084 , People’s Republic of China
4. GIZ and Research Associate, Oxford Institute for Energy Studies