Quantitative Correlation and Causality Analysis on the Cause of Haze in Henan Province

With the frequent occurrence of fog and haze in China, more and more studies on the causes of haze and the impact on people's lives were carried out. In this paper, the causes of haze are analyzed in Henan province which is the Central Plains of China. Based on the official historical data, two methods, principal component analysis (PCA) and convergent cross mapping (CCM) are used to quantitative analysis the correlation and causality of the AQI, the concentration of pollutants and the meteorological factors. First, the correlation of air quality is analyzed in the cities of Henan Province, and then Zhengzhou was taken as the main research area in the following study. According to the principal component analysis of the pollutants concentration, the former two elements PM2.5 and CO with the meteorological factors are combined to carry out CCM causality analysis.