Fig. 1. [in Chinese]

Fig. 2. The Variation of vertical wind field from October to December 2015. (a) Sanshui; (b) Chancheng; (c) Shunde (from October 16 to December 14, 2015, the 23rd Research Institute of the Second Academy of China Aerospace Science and Industry Corporation); (d) Shunde (from December 14 , 2015 to January 12, 2016, Minshida radar)

Fig. 3. Diurnal variation of temperature at Chancheng station. (a) October; (b) November; (c) December; (d) from October to December

Fig. 4. Average daily planetary boundary layer height and AQI variation at Chancheng station from October to December, 2015

Fig. 5. Daily variation chart of extinction coefficient (a) and depolarization ratio (b) in Foshan City from October to December, 2015

Fig. 6. Changes of surface meteorological elements in Foshan from December 21 to 24, 2015. (a) Wind speed; (b) relative humidity; (c) temperature; (d) mass concentration of PM_2.5

Fig. 7. Wind profile of Sanshui station and Shunde station from December 22 to 23, 2015. (a) Sanshui station on December 22; (b) Sanshui station on December 23; (c) Shunde station on December 22; (d) Shunde station on December 23

Fig. 8. Extinction coefficient (a) and depolarization ratio (b) of Sanshui station on December 22 to 23, 2015