Characteristics of Air Quality Changes and Pollution Causes in Enshi City
Air quality has an important impact on human health.Based on the monitoring data of Enshi Automatic Atmospheric Monitoring Station(2015-2022),this paper use the mass concentrations of daily AQI,PM2.5,PM10,SO2,NO2,O3(8 h)and CO from 2015-2022.The changing characteristics of air pollution in Enshi City were analyzed.The results show that the average annual AQI value of Enshi City show a fluctuating downward trend,and the average AQI value of Enshi City from 2015-2022 is 58.4,which belonged to the secondary air quality standard.PM2.5,PM10 and O3 are the main pollutants affecting air quality,with the most serious pollution in winter and the best air quality in summer.Overall,the ambient air quality of Enshi City is getting better year by year,and the ambient air quality rate is constantly improving.
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