The Characteristics of Haze Pollution Days in Qingdao
Author(s): BI Wei, WAN Fu-Jing, LU Xue, ZHANG Kai-Jing, SUN Meng, GAO Shan, Qingdao Meteorological Bureau, Environmental Monitoring Center of Qingdao, North China Sea Marine Forecasting Center of State Oceanic Administration
Pages: 11-18
Year: 2015 Issue: 5
Journal: Journal of Ocean University of Qingdao
Keyword: haze; air pollution; temporal and spatial distribution; circulation situation; inversion; surface wind;
Abstract: According to the meteorological observation data and ambient air quality data from 2003to2013,the temporal and spatial distribution characteristics of circulation situations and boundary layer in Qingdao are analyzed.The statistical results indicate the haze days with air pollution above 4-level generally appear from December to next January and the hourly variation of air quality index(AQI)shows"Three Peaks"pattern.Haze pollution areas of Qingdao include from Shibei district to Licang district and the west area of Laoshan Mountain.60% haze pollution days appears on the bottom of cold trough at 500 hPa.As well as Qingdao located in the center of surface high pressure or saddle field.Inversion strength and thickness appear somewhat positive relationship with AQI during haze pollution days.Land breeze makes high pollutant density,while sea wind makes low one.Either north wind speed more than 4.5m/s or lasting south wind could decrease pollutant and clean air.
Pages: 11-18
Year: 2015 Issue: 5
Journal: Journal of Ocean University of Qingdao
Keyword: haze; air pollution; temporal and spatial distribution; circulation situation; inversion; surface wind;
Abstract: According to the meteorological observation data and ambient air quality data from 2003to2013,the temporal and spatial distribution characteristics of circulation situations and boundary layer in Qingdao are analyzed.The statistical results indicate the haze days with air pollution above 4-level generally appear from December to next January and the hourly variation of air quality index(AQI)shows"Three Peaks"pattern.Haze pollution areas of Qingdao include from Shibei district to Licang district and the west area of Laoshan Mountain.60% haze pollution days appears on the bottom of cold trough at 500 hPa.As well as Qingdao located in the center of surface high pressure or saddle field.Inversion strength and thickness appear somewhat positive relationship with AQI during haze pollution days.Land breeze makes high pollutant density,while sea wind makes low one.Either north wind speed more than 4.5m/s or lasting south wind could decrease pollutant and clean air.
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