1. Ph.D. Candidate, MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power Univ., Beijing 102206, China.
2. Professor, MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power Univ., Beijing 102206, China (corresponding author).
3. Research Fellow, Dept. of Environmental Earth System Science, Stanford Univ., Stanford, CA 94305-4216.
4. Ph.D. Candidate, Institute for Energy, Environment and Sustainable Communities, Univ. of Regina, Regina, Saskatchewan, Canada S4S 0A2.
5. Professor, MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power Univ., Beijing 102206, China.