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二氧化碳柱浓度的卫星反演试验及地基验证

DOI: 10.1007/s11430-015-5080-z, PP. 856-863

Keywords: 二氧化碳,反演试验,卫星高光谱遥感,地基验证

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Abstract:

?基于最优估计理论,采用LBLRTM和VLIDORT辐射传输模式以及包含LineMixing效应的aer_v_3.2数据库,构建了一套短波红外高光谱卫星反演XCO2的算法.利用该算法试验了LineMixing效应对卫星反演结果的影响,对GOSAT卫星观测光谱数据进行了系统性试验反演,并利用选取的TCCON站点一年中的匹配观测资料进行了地面验证,同时与GOSAT卫星官方L2B产品进行了比对.试验表明,忽略LineMixing将系统性低估约0.25%的CO2柱浓度.在气溶胶光学厚度小于0.3的大气条件下,本文反演算法反演结果与GOSAT官方数据产品精度接近,与地基观测值相差小于1%,而高浓度气溶胶背景下卫星反演CO2浓度的有效方法仍有待于突破.

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