1. Department of Building Science, Tsinghua University, Beijing, China
2. Key Laboratory of Eco Planning & Green Building, Ministry of Education, Tsinghua University, Beijing, China
3. Rutgers Environmental and Occupational Health Science Institute, Piscataway, NJ, USA
4. Center for Air Resource Engineering and Science, Clarkson University, Potsdam, NY, USA
5. Meadowlands Environmental Research Institute, Lyndhurst, NJ, USA