气象科学2017，Vol.37Issue(1)：93-100,8.DOI:10.3969/2015jms.0086
Terra和Aqua卫星MODIS 3 km AOD与北京PM2.5对比分析
Comparative analysis between hourly PM2.5 concentration and MODIS 3 km aerosol optical depth derived from Terra and Aqua satellites in Beijing
摘要
Abstract
By using the hourly PM2.5 surface observation data from 12 air quality monitoring stations in Beijing of 2014 and the Aerosol Optical Depth (AOD) products at 3 km,the spatial and temporal distribution characteristics of surface PM2.5 and AOD of two satellites were analyzed,moreover,based on the spatial matching,the regression model of PM2.5 versus AOD was established.Results show that the PM2.5 concentration is higher in downtown region than that in suburban region while the lowest value appears in Dingling station.The daily variation of PM2.5 concentration shows bimodal and unimodal pattern in urban areas and suburban areas,respectively.The spatial distribution characteristics of AOD are similar to those of PM2.5 concentration,there is significant AOD gradient along the mountainous border.The AOD of Terra in the mornings are larger than those of Aqua in the afternoons in the urban,but in the suburbs,both of the AODs are essentially the same.The determination coefficient(R2) between AOD of Aqua and PM2.5 concentration is 0.11 higher than that between AOD of Aqua and PM2.5 concentration,and the average coefficients of determination (R2) between AOD of Aqua and Terra and PM2.5 concentration in urban stations are higher than those in suburban stations.Comprehensively,the correlation coefficient of AOD of Aqua and PM2.5 is the highest in urban areas,which means that Aqua satellite is more adaptive to monitor and inverse ground-level PM2.5 in urban areas.关键词
气溶胶光学厚度/逐时PM2.5/Terra卫星/Aqua卫星Key words
AOD/Hourly PM2.5/Terra satellite/Aqua satellite分类
资源环境引用本文复制引用
王伟齐,张成网,臧增亮,王体健,尤伟..Terra和Aqua卫星MODIS 3 km AOD与北京PM2.5对比分析[J].气象科学,2017,37(1):93-100,8.基金项目
国家自然科学基金资助项目(41275128) （41275128）
