1. Environmental Engineering Department, Montana Tech, Butte, Montana 59701, United States
2. Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
3. University of Chinese Academy of Science, Beijing, 100084, China
4. Xiamen Key Lab of Urban Metabolism, Xiamen, 361021, China
5. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States