1. Nanjing Joint Institute for Atmospheric Sciences and Key Laboratory of Transportation Meteorology of China Meteorological Administration Nanjing China
2. Key Laboratory for Mesoscale Severe Weather/Ministry of Education and School of Atmospheric Science Nanjing University Nanjing China
3. State Key Laboratory of Severe Weather and Joint Center for Atmospheric Radar Research of the China Meteorological Administration and Nanjing University Beijing China
4. Colorado State University Fort Collins CO USA