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大气科学  2003 

地基曙暮光光谱观测反演平流层O3和NO2柱含量

DOI: 10.3878/j.issn.1006-9895.2003.06.10

Keywords: 二氧化氮,臭氧,差分光学吸收光谱方法,反演

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Abstract:

用差分光学吸收光谱(DOAS)方法,从曙暮光天顶散射可见光光谱资料反演了北京上空的O3和NO2柱含量,并对反演结果进行了验证和误差分析.斜柱含量的反演采用了线性和非线性最小二乘拟合方法,拟合时考虑了O3、NO2和H2O的吸收、Ring效应和散射的影响;斜柱含量除以空气质量因子转换成垂直柱含量.空气质量因子的计算使用伪球面DISORT辐射传输模式.O3和NO2总量的检验分别用北京的DobsonO3资料和卫星SAGEⅡ的NO2廓线资料.反演的O3总量与DobsonO3总量相比偏差小于10%;NO2总量与SAGEⅡ的偏差约20%.

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