1. Environment Research Institute Shandong University Qingdao China
2. School of Environmental Science and Engineering Shandong University Qingdao China
3. Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3) Department of Environmental Science and Engineering Institute of Atmospheric Sciences Fudan University Shanghai China
4. Now at Science and Technology Branch Shandong Sport University Jinan China
5. Taishan National Reference Climatological Station Tai'an China