南宁市气溶胶光学厚度与大气颗粒物相关性分析  

Correlation Analysis of Aerosol Optical Depth and Atmospheric Particles in Nanning City

作　　者：邓齐玉 赵银军[1,2] 卢远[1,2] 吴海燕[1] 金健[1] 

机构地区：[1]广西师范学院地理科学与规划学院,广西南宁530001 [2]广西师范学院北部湾环境演变与资源利用教育部重点实验室,广西南宁530001

出　　处：《广西师范学院学报（自然科学版）》2016年第3期73-79,共7页Journal of Guangxi Teachers Education University(Natural Science Edition)

基　　金：广西科学研究与技术开发项目:基于3S技术和数值模型耦合的南宁市大气质量PM2.5;PM10模拟与预报关键技术(1598017-13)

摘　　要：利用南宁市世锦赛期间(10月6—13日)的MODIS影像反演的气溶胶光学厚度(AOD)和PM_(2.5)、PM_(10)质量浓度为数据源,统计以地基站点为中心在站点位置0.5°×0.5°区域范围内的AOD日均值和各监测站PM_(2.5)、PM_(10)质量浓度日均值,运用6种数学模型(线性、一元二次、一元三次、对数、幂函数、指数)进行相关性分析。结果表明,在AOD与PM_(2.5)日均值建立的六种关系模型中,一元三次函数模型的拟合效果更好,且6、7、13日的AOD与PM_(2.5)相关性较高,R2在0.6以上;在AOD与PM_(10)日均值建立的六种关系模型中,一元三次函数模型的拟合效果更好,但AOD值与PM_(10)相关性整体比PM_(2.5)相关性低,7、9日的AOD与PM_(10)相关性较高,R2在0.6以上。对于相关性较好的,可用该模型函数来反演和监测PM_(2.5)、PM_(10)质量浓度。The research used the Aerosol Optical Depth inverted by MODIS and PM2.5/PM10 mass concentration as sources during the World Championships of Nanning,and statistics was collected on the daily average AOD which was within the area of the site location 0.5°×0.5°at the center of the foundation site and PM2.5/PM10 mass concentration.Correlation analysis was carried on by using six mathematical models（linear,quadratic function,cubics function,logarithm,power function,exponential function）.Results showed that in the six established models of the relationship between AOD and PM2.5,cubics function was the best,and the correlation was higher in 6,7,13 days,in which R2 was above 0.6.In the six established models of the relationship between AOD and PM10,cubics function was the best,and the correlation was higher in 7,9days,in which R2 was above 0.6.We can use this model to retrieve and monitor PM2.5/PM10 mass concentration when the correlation is better.

关 键 词：MODIS 气溶胶光学厚度 PM2.5质量浓度 PM10质量浓度 相关性分析 

分 类 号：X513[环境科学与工程—环境工程] X87