| 地基曙暮光光谱观测反演平流层O3和NO2柱含量 |
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| 引用本文： | 王萍,陈洪滨,吕达仁.地基曙暮光光谱观测反演平流层O3和NO2柱含量[J].大气科学,2003,27(6):1067-1076. |
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| 作者姓名： | 王萍 陈洪滨 吕达仁 |
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| 作者单位： | 中国科学院大气物理研究所中层大气与全球环境探测开放实验室,北京,100029 |
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| 基金项目： | 国家自然科学基金资助项目49875001和中国科学院大气物理研究所知识创新重大项目8-3102共同资助 |
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| 摘 要： | 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Dobson O3资料和卫星SAGE Ⅱ的NO2廓线资料.反演的O3总量与Dobson O3总量相比偏差小于10%;NO2总量与SAGE Ⅱ的偏差约20%.
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| 关 键 词： | 二氧化氮 臭氧 差分光学吸收光谱方法 反演 |
Retrievals of Stratospheric O3 and NO2 Columns from the Ground-Based Twilight Zenith Sky Observations |
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| Wang Ping,Chen Hongbin and Lv Daren.Retrievals of Stratospheric O3 and NO2 Columns from the Ground-Based Twilight Zenith Sky Observations[J].Chinese Journal of Atmospheric Sciences,2003,27(6):1067-1076. |
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| Authors: | Wang Ping Chen Hongbin and Lv Daren |
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| Abstract: | Stratospheric O 3 and NO 2 columns are retrieved from the ground\|based twilight zenith sky observations by using DOAS method Our moderate resolution spectrometer has the 0 6 nm resolution with 1200 g mm -1 grating, which is suitable for O 3 and NO 2 measurements It is seen from the simulated retrievals that the DOAS method is accurate if the wavelength calibration and the cross section are accurate The AMF is calculated with the DISORT radiative trasfer model We have also calculated the errors in linear and nonlinear square fittings In O 3 and NO 2 retrievals the nonlinear error is not important at the wavelength used In validation, the bias between the DOAS O 3 and Dobson O 3 column is about 10% The NO 2 column difference between DOAS and SAGE II is about 20% in monthly average values But the residual spectra are still large, which is another cause for the bias The measurement and retrieval algorithm should be improved later |
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| Keywords: | nitrogen dioxide ozone differential absorption method retrieval |
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