Fig. 1. Transit trajectory of satellite. (a) Fine day; (b) haze; (c) dust; (d) fireworks

Fig. 2. PM10, PM2.5 and visibility in different weathers. (a) Fine day; (b) haze; (c) dust;

Fig. 3. Profiles of extinction coefficient of aerosol. (a) Fine day; (b) haze; (c) dust; (d) fireworks

Fig. 4. Distribution of backscatter coefficient of aerosol. (a) Fine day; (b) haze; (c) dust; (d) fireworks

Fig. 5. Volume depolarization ratio frequency distribution of aerosols at different altitudes. (a) Fine day; (b) haze; (c) dust; (d) fireworks

Fig. 6. Color ratio frequency distribution at different altitudes. (a) Fine day; (b) haze; (c) dust; (d) fireworks

Fig. 7. Distribution of aerosol types. (a) Fine day; (b) haze; (c) dust; (d) fireworks

Fig. 8. 48 h HYSPLIT back trajectory. (a) Haze; (b) dust; (c) fireworks