针对城区和郊区气象因素与NO_x、PM_(10)浓度间的互相关性的特征,采用多重分形去趋势波动互相关分析法(MFDCCA),对气象因素与NO_x、PM_(10)浓度时间序列进行研究。首先验证了温度与NO_x、PM_(10)具有互相关性和多重分形特征,然后,逐次分析城区和郊区在夏冬两季温度、湿度、风速、气压与NO_x、PM_(10)的多重分形特征。结果表明,城区天气因素与PM_(10)、NO_x的多重分形特征要强于郊区,两地天气因素对PM_(10)的影响程度要强于对NO_x的程度,城区和郊区夏季的天气因素与PM_(10)的多重分形特征均强于冬季。
The cross-correlation between meteorological factors(temperate,humidity,wind speed and pressure) and NO_x,PM_(10) were studied through multifractal detrended cross-correlation analysis.Firstly,the crosscorrelation test is carried out and the results indicate that cross-correlation behaviors exist statistically between them.Then the multifractal characteristics between temperature,humidity,wind speed,air pressure and NO_x,PM_(10) of both urban and suburban in summer and winter were compared.The results showed that the strengths of multifractal spectrum between them in urban area were found to be stronger than that in rural area.Finally the multifractal characteristics between meteorological factors and PM_(10) in summer were concluded to be stronger than that in winter.