2017—2021年上饶市空气质量变化与气象因子的关系分析

Analysis on Relationship between Air Quality Change and Meteorological Factors in Shangrao City from 2017 to 2021

利用2017—2021年期间上饶市环境监测数据和同期国家气象观测站气象观测数据,研究近5年来上饶市空气质量变化规律,以及各类主要污染物浓度月变化规律及其与气象要素之间的相关性。结果表明,2017—2021年,上饶市空气质量在逐年转好,受污染的天数逐年减少,2017年的空气质量最差,且重污染只出现在2017年。2017年空气质量为优的天数占比为23.6%,2021年空气质量为优的天数占达46.6%。通过分析发现,上饶市空气质量和气象要素有很好的相关性,其中AQI和气压、能见度、日照有明显的正相关性,与湿度、降水、风速和极大风速有明显的负相关性,并发现气象条件和各类污染物浓度也有显著的关联性。

Used the environmental monitoring data of Shangrao City from 2017 to 2021 and the meteorological observation data of the National Meteorological Observation Station in the same period to study the change law of air quality in Shangrao City in the past five years,as well as the monthly change law of the concentration of various major pollutants and its correlation with meteorological elements.The results showed that from 2017 to 2021,the air quality in Shangrao City improved year by year,and the number of polluted days decreased year by year.The air quality in 2017 was the worst,and the heavy pollution only occured in 2017.The number of days with excellent air quality in 2017 accounted for 23.6%,and the number of days with excellent air quality in 2021 accounted for 46.6%.Through analysis,it was found that there was a good correlation between the air quality and meteorological elements in Shangrao City.Among them,AQI had a significant positive correlation with air pressure,visibility and sunshine,and a significant negative correlation with humidity,precipitation,wind speed and extreme wind speed.It was also found that meteorological conditions and various pollutant concentrations had a significant correlation.