National Climate Center;
China Meteorological Administration;
Beijing 100081;
China;
Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters;
Nanjing University of Information Science and Technology;
Nanjing 210044;
China;
School of Geography and Environmental Engineering;
Gannan Normal University;
Ganzhou 341000;
China;
Camford Royal School;
Beijing 100093;
China;
Climate and Environment Modeling Lab;
Institute of Earth Environment;
Chinese Academy of Sciences;
Xi’an 710061;
China;
Meteorological conditions; Human activities; Haze; Jing-Jin-Ji region;