宁夏工程技术2023，Vol.22Issue(4)：312-319,8.
银川市空气污染与气象要素的相关关系研究
Study on the Correlation between Air Pollution and Meteorological Elements in Yinchuan City
摘要
Abstract
In order to explore the relationship between air pollutants and meteorological elements in Yinchuan City,statistical methods such as correlation analysis and composite analysis were used to study the characteristics of air quality changes from 2018 to 2020 and their correlation with meteorological elements.The results show that the monthly variation of the Air Quality Index(AQI)in Yinchuan City is generally consistent,with higher AQI values in January,May,June,and July,and the lowest AQI values in September and October.The number of days with excellent air quality levels in Yinchuan City shows an increasing trend.The primary pollutants in Yinchuan City are mainly PM10,O3 and PM2.5.O3 concentration is higher from May to August,PM2.5 concentration is higher in January,February,November,and December,and PM10 concentration is higher in January,March,May,and November.In 2020,when the O3 concentration was high,the 850 hPa synoptic chart showed that Yinchuan was at the bottom of a thermal trough with weak winds and low relative humidity;when the PM10 concentration was high,the 850 hPa synoptic chart showed that the Yinchuan area was affected by a broad trough,with a temperature inversion layer in the lower atmosphere.There is a certain correlation between air quality in Yinchuan City and the vertical distribution of meteorological elements.AQI increases when the relative humidity in the mid-lower troposphere decreases;AQI increases when the entire tropospheric geopotential height decreases and the mid-lower layer temperature increases;AQI increases when the lower layer geopotential height rises and the temperature decreases.关键词
空气质量指数/PM10,O3污染/相关性分析/合成分析/气象要素Key words
air quality index/PM10 and O3 pollution/correlation analysis/synthesis/meteorological elements分类
大气科学引用本文复制引用
程瑶,肖云清,邵建..银川市空气污染与气象要素的相关关系研究[J].宁夏工程技术,2023,22(4):312-319,8.基金项目
湖北省气象局科技基金项目(2021Y10) （2021Y10）
