Temporal Scaling Characteristics of Correlation of O3 and NO2 for Urban Area of Chengdu  in  Basin Climate

Abstract

Abstract: The correlations between ground-level NO₂ and O₃ concentration are analyzed by the method of detrended cross-correlation analysis,based on the observational data in the urban area of Chengdu (capital of Sichuan Provincial,China) from July 1 to August 31,2013 and from January 1 to February 28,2014.The results show that the correlation between NO₂ and O₃ concentration are characterized by long-term persistence.Furthermore,a comparative study of the correlation of NO₂ and O₃ in the summer and winter is made,and the reason for the differences are analyzed.It shows that there were significant differences in meteorological conditions on the different time scale of the interaction between NO₂ and O₃.It was found that the differences are due to solar radiation,sunshine hours and temperature.The results help to deepen the understanding the pollution characteristic of O₃ in Chengdu.

Key words: O₃, meteorological condition, NO₂, detrended cross-correlation analysis

LI Si-Chuan, WU Sheng-Hu, HUANG Yi, SHI Kai. Temporal Scaling Characteristics of Correlation of O₃ and NO₂ for Urban Area of Chengdu in Basin Climate[J]. journal6, 2015, 36(1): 61-66.

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Temporal Scaling Characteristics of Correlation of O₃ and NO₂ for Urban Area of Chengdu in Basin Climate

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