1. Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
2. School of Atmospheric Sciences, Nanjing University, China.
3. Meteorological Institute of Shaanxi Province, Xi’an, China.
4. Joint International Research Laboratory of Atmospheric and Earth System Sciences and Institute for Climate and Global Change Research, Nanjing University, China.
5. Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, USA.
6. University of Leipzig, Leipzig, Germany.
7. Research Center for Air Pollution and Health; Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, P.R. China.
8. Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91123, USA.
9. Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, P.R. China.