1. Key Laboratory of Aerosol Science and Technology, SKLLQG, Institute of Earth Environment; Chinese Academy of Sciences; Xian China
2. National Center for Atmospheric Research; Boulder Colorado USA
3. Vaisala Inc.; Boulder Colorado USA
4. Chinese Academy of Meteorological Sciences; Xian China
5. Xi'an Jiaotong University; Xian China
6. State Environmental Protection Key Laboratory; Nankai University; China