1 National Climate Center, China Meteorological Administration, Beijing 100081, China;
2 Laboratory for Climate Studies, China Meteorological Administration, Beijing 100081, China;
3 Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China;
4 China Meteorological Administration Training Centre, China Meteorological Administration, Beijing 100081, China