Key Laboratory of Semi-Arid Climate Change and College of Atmospheric Sciences,Lanzhou University,Lanzhou,China;
Key Laboratory of Middle Atmosphere and Global Environment Observation,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China;
Department of Atmospheric Science,Yunnan University,Kunming,China;
Atmospheric Observation Centre of Lhasa Meteorological Bureau,Lhasa,China;
Institute of Arid meteorology,China Meteorological Administration,Lanzhou,China;