济南市MODIS气溶胶光学厚度和PM_(2.5)浓度的特征及相关性分析  

Characteristics and Correlation of Aerosol Optical Thickness and PM_(2.5) Concentration Over Jinan City

作　　者：陈飞龙[1] 王召海[1] 王其新[1] 

机构地区：[1]山东师范大学地理与环境学院,济南250014

出　　处：《鲁东大学学报（自然科学版）》2016年第1期86-91,共6页Journal of Ludong University:Natural Science Edition

摘　　要：利用MODIS数据反演济南市气溶胶光学厚度(AOT:Aerosol Optical Thickness)并与济南市5个站点的PM_(2.5)浓度值进行特征及相关性分析.研究表明,济南市AOT与PM_(2.5)均有明显的时空分布特征——在春夏季有相反的变化趋势,AOT表现为增高趋势,PM_(2.5)表现为降低趋势;AOT与PM_(2.5)在空间上均有市区高于郊区的特征,有较好的相关性且在春夏季无明显差异,但郊区的相关性明显好于市区;AOT与PM_(2.5)的幂函数拟合效果要好于其他函数模型.因此,MODIS AOT数据可以作为PM_(2.5)浓度地面监测的有效补充手段.The characteristics and relationship of aerosol optical thickness （AOT） derived from MODIS data and PM2.5 concentrations of 5 ground monitoring sites over Jinan were analyzed. The results showed that both AOT and PM2.5 had obvious spatial and temporal distribution characteristics;they had opposite trend that AOT showed a trend of increasing and the PM2.5 showed a decreasing tendency;Both of them had spatial characteris- tics that the values in the suburbs was lower than the urban areas. During spring and summer, they had a good correlation and no obvious difference and no obvions difference. But the correlation in the suburbs was better than that of the urban areas. The power-law fitting function between them was better than other function mod- el. Hence,MODIS-derived AOT data could be used as an effective complement to the ground monitoring of PM2.5 concentrations.

关 键 词：气溶胶光学厚度 PM2.5 相关性 

分 类 号：P407.1[天文地球—大气科学及气象学]