国土资源遥感2013，Vol.25Issue(3)：90-96,7.DOI:10.6046/gtzyyg.2013.03.16
基于TM图像的南京市气溶胶光学厚度反演
Retrieving aerosol optical depth over Nanjing City based on TM image
摘要
Abstract
Aerosol is an important factor which not only influences land-atmosphere energy balance and climate change but also affects the environmental quality of human life.Based on TM image of Landsat 5,the authors built up a look-up table by 6S atmospheric radiative transfer model,and then got the aerosol optical depth (AOD) of the dark pixels based on regression analysis.After that,the spatial distribution of AOD over Nanjing City was calculated by kriging interpolation.The results were tested by atmospheric correction and an analysis was made on the inversion results at last.The results show that the TM images,which have a higher resolution,can be used to retrieve AOD accurately through the "dark pixel" method,that the AOD value in the north of Nanjing is relatively higher than that in the south,that the distribution of vegetation,urban area and elevation in Nanjing City is the main factor influencing the distribution of AOD,and that high resolution images are capable of obtaining more details of the spatial distribution of aerosol than low resolution images in the urban area.关键词
TM/气溶胶光学厚度(AOD)/暗像元/查找表Key words
TM/ aerosol optical depth(AOD)/dark pixel/ look-up table分类
信息技术与安全科学引用本文复制引用
程晨,陈健,李鑫慧..基于TM图像的南京市气溶胶光学厚度反演[J].国土资源遥感,2013,25(3):90-96,7.基金项目
江苏高校优势学科建设工程资助项目及国家自然科学基金项目(编号:40901239)共同资助. （编号:40901239）
