1. College of Atmospheric Sciences, Lanzhou University Lanzhou China
2. Lanzhou Institute of Arid Meteorology, Chinese Meteorological Administration; Gansu Province Key Laboratory of Arid Climate Change and Reducing Disaster, China; Meteorological Administration Key Laboratory of Arid Climate Change and Reducing Disaster Lanzhou China
3. Gansu Provincial Meteorological Service Lanzhou China
4. Ningxia university, school of ecology and environment Yinchuan China
5. Lanzhou Regional Climate Center Lanzhou China