1. a School of Science , Xi'an Jiaotong University , Xi'an Shaanxi , 710049 , China
2. b Physics Department , University of New Brunswick , Fredericton , Canada , E3B 5A3
3. c Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites , National Satellite Meteorological Centre, China Meteorological Administration , Beijing , 100081 , China
4. d State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry , Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing , 100029 , China