On January 22-27,2021,Liaoyang experienced a heavy and above pollution process that lasted for a long time,had a high concentration of pollutants and had a wide range of pollution,with the overall degree of light to serious pollution.By the 27th,Liaoyang had four days of severe pollution(one day of severe pollution)and the average concentration of PM2.5 in the city had risen from 40 μg/m3 before the pollution process to 71 μg/m3 until the end of the pollution process in the morning of 27th.The pollution process was heavy and typical,which was representative for the analysis of pollution characteristics in Liaoyang city.
维普
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