Characteristics of Fogs and Air Quality and Their Relationship in Qingdao
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Abstract:
Based on the data of fog days and the concentrations of SO2, NO2 and PM10 from 2006 to 2012, the characteristics of fogs and air quality and the difference of the influence of sea fog in summer and radiation fog in winter on the air quality in Qingdao are statistically analyzed. The results show that the annual mean number of fog days is 55 days and sea fog days account for 58% of the fog days throughout the year. The highincidence periods of sea fogs are June and July. The annual mean number of pollution days is 30 days and air pollution occurred mostly in winter and spring, and PM10 is the main pollutant in Qingdao. With the process of urbanization, the annual concentration of NO2 tends to increase and SO2 tends to decline. The heavy fogs accompany pollutant days of different levels. The air quality worsens during winter fog days, and the concentrations of SO2, NO2 and PM10 are higher than those in summer.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.