Wensheng FANG, Nianwen CAO, Xinchi SHI. Analysis of a synergistic pollution process of PM2.5 and ozone in Beijing-Tianjin-Hebei Region[J]. Journal of Atmospheric and Environmental Optics, 2024, 19(3): 342
- Journal of Atmospheric and Environmental Optics
- Vol. 19, Issue 3, 342 (2024)
Fig. 1. Distribution and classification of observation sites
Fig. 2. Variations of PM2.5 (a), O3 (b), temperature (c), pressure (d), wind speed (e) and relative humidity(f) during the monitoring period (April 16-22, 2018)
Fig. 3. Statistics of times of exceeding the standard of hourly ozone mass concentration value
Fig. 4. Pollution status at environmental monitoring stations during 16-22 April, 2018
Fig. 5. Meteorology and ground observation map during 18-21 April, 2018
Fig. 6. [in Chinese]
Fig. 7. Mean profiles of optical parameters at 02:11 on 19th April, 2018. (a) Extinction coefficient; (b) backscattering coefficient;(c) depolarization ratio; (d) color ratio
Fig. 8. Aerosol distribution at 12:51 on 19th April, 2018
Fig. 9. Mean profiles of optical parameters at 12:51 on 19th April, 2018. (a) Extinction coefficient; (b) backscattering coefficient;(c) depolarization ratio; (d) color ratio
Fig. 10. 24 h HYSPLIT backward trajectory. (a) 02:00 a.m. on the 19th; (b) 13:00 p.m. on the 19th
Fig. 11. Relationship between the hourly average mass concentration of PM2.5 and wind direction (a), ozone and wind direction (b)
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Table 1. The classification standard of aerosol types
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Table 2. The correlation analysis of pollutant impact factors
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