Key Laboratory of Meteorological Disaster;
Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters;
Nanjing University of Information Science and Technology;
Nanjing 210044 China;
Weihai Meteorological Bureau;
Weihai;
Shandong 264200 China;
climate; warming; South; China; Sea; summer; monsoon; onset; and; retreat; dates; cross-equatorial; flow;