Tornadoes Research Center of Foshan;
Foshan 528000 China;
School of Atmospheric Science;
Sun Yat-sen University;
Guangzhou 510275 China;
Institute of Atmospheric Environmental Safety and Pollution Control;
Jinan University;
Guangzhou 510632 China;
Guangdong Meteorological Observation Data Center;
Guangzhou 510110 China;
atmospheric environment; air quality; recirculation factor; sea-land breezes;