武汉地区环境卫星气溶胶光学厚度反演  

Aerosol Optical Depth Retrieval of Huanjing Satellite in Wuhan Area

作　　者：刘宇昕[1,2,3] 王斌 曹诗颂[5] 张峰 王兆徽 LIU Yuxin;WANG Bin;CAO Shisong;ZHANG Feng;WANG Zhaohui(National Satellite Ocean Application Service,Beijing 100081,China;Key Laboratory of Space Ocean Remote Sensing and Application,MNR,Beijing 100081,China;College of Oceanography,Hohai University,Nanjing 210098,China;Institute of Heavy Rain,China Meteorological Administration,Wuhan 430074,China;School of Geomatics and Urban Spatial Informatics,Beijing University of Civil Engineering and Architecture,Beijing 102616,China;Beijing GIS Range Technology Co.Ltd,Beijing 102401,China)

机构地区：[1]国家卫星海洋应用中心,北京100081 [2]自然资源部空间海洋遥感与应用重点实验室,北京100081 [3]河海大学海洋学院,南京210098 [4]中国气象局武汉暴雨研究所,武汉430074 [5]北京建筑大学测绘与城市空间信息学院,北京102616 [6]北京集思睿景科技有限公司,北京102401

出　　处：《遥感信息》2020年第2期30-37,共8页Remote Sensing Information

基　　金：国家自然科学基金项目(41276019、41076012);国家重点研发计划项目(2018YFC0213104)。

摘　　要：针对难以及时、准确掌握中部地区气溶胶污染状况的问题,选用适用于城市等亮地表区域的结构函数法,结合环境一号A/B卫星CCD影像数据,开展武汉及周边地区气溶胶光学厚度反演研究。首先对卫星遥感数据进行预处理,然后根据结构函数法的原理和模型,选择了合适的结构函数公式、窗口范围和距离值。通过选取研究时间范围内的"清洁日",在原始影像预处理的基础上使用归一化植被指数剔除水体影响,实现环境一号卫星CCD影像的武汉地区气溶胶光学厚度反演。通过CE318实测数据、湖北省环保厅的大气污染数据、MODIS产品检验结果,对反演结果进行了对比验证,从精度、准确度、空间分布和时间分布趋势等方面验证了模型反演的可靠性。In view of the difficulty in grasping the aerosol pollution status in the central region in a timely and accurate manner,this paper selects the structure function method suitable for bright surface areas such as cities,and the retrieval of aerosol optical depth in Wuhan and surrounding areas is carried out in combination with the CCD image data of HJ-1 A/B satellite.Firstly,the satellite remote sensing data is preprocessed,and then the appropriate formula,window range and distance value of the structure function are selected according to the principle and model of the structure function method.By selecting the "clean day"within the research time range and using the normalized difference vegetation index to eliminate the influence of the water on the basis of the preprocessing,the aerosol optical depth retrieval of HJ-1 CCD images in Wuhan is realized.Through CE318 measured data,air pollution data from Hubei provincial environment protection department and MODIS product inspection results,the retrieval results are compared and verified,and the reliability of the retrieval is verified from the aspects of precision,accuracy,spatial distribution trend and temporal distribution trend.

关 键 词：环境一号A/B 气溶胶光学厚度反演 结构函数法 武汉 查找表法 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]