Abstract: The present study focuses on the high loading of PM10, PM2.5 and PM1 mass during the episodic events i.e. Diwali and fog at the campus site of Dayalbagh Educational Institute, Agra. During Diwali the mass concentration for PM10, PM2.5 and PM1 were 2.8, 4.7 and 6.8 times higher than the mass observed during normal days due to burning of firecrackers. In addition, trace gas (O3, NO2 and CO) levels were also high during Diwali. During the fog event also high mass concentration of PM10, PM2.5 and PM1was observed probably due to less dispersion of pollutants as a consequence of low mixing height, low temperature and high relative humidity. On the basis of correlation analysis and HYSPLIT backward trajectories high mass concentration during the two pollution episodes may be mainly attributed to firecrackers during Diwali and anthropogenic activities and local meteorological condition during fog..
Keywords:Pollution episodes; PM10; PM2.5; PM1; O3; Fog; Diwali
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