Variation of Air Quality Index and Its Relationship With Meteorological Elements in Beijing from 2012 to 2015
Wang Jingyun
Zhang Hongri
Zhao Xiangwei
Ji Jiehui
Yang Shizhai
Abstract：According to the daily air quality index (AQI) data and meteorological data from 2012 to 2015,statistics method and generalized additive model (GAM) were used to analyze the time variation of air quality index and its relationship with meteorological elements.The results were as follows.The air quality of Beijing showed a decreasing trend in general during 2012-2015,which was bad in winter and spring and relatively good in summer and autumn.The severe pollution weather easily occurred in the winter and pollution weather frequently occurred in spring.Weekend effect was found from the air quality in Beijing,the air quality was bad in the weekend and relatively good in the weekday.The AQI generally showed remarkable negative correlation with the wind speed,sunshine hours,precipitation,average temperature,maximum temperature and positive correlation with humidity.The correlation between meteorological elements and AQI showed a large difference in different seasons and different levels of air quality.The AQI value from GAM showed a linear correlation with the precipitation and nonlinear correlation with other relative meteorological elements.The tendency and degree of influence differed remarkably when the meteorological elements was at different intervals.
Keywords：air quality index (AQI)meteorological elementscorrelation analysisgeneralized additive model (GAM)
Publication Date：2017-10-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 35-41 )