Key Laboratory of Meteorological Disaster of Education(KLME)/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD) University of Information Science and Technology 210044;
Key Laboratory of Meteorology and Ecological Environment of Hebei Province 050021;
Beijing Regional Climate Center 100089;
sudden stratospheric warming(SSW); PM_(2.5); Beijing-Tianjin-Hebei(BTH); East Asian winter monsoon; boundary layer meteorological conditions;