| 光谱学与光谱分析 |
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| Comparison of NO2 Slant Columns Between Two Ground-Based MAX-DOAS |
| XU Jin1, XIE Pin-hua1*, SI Fu-qi1, LI Ang1, DOU Ke1, LIU Wen-qing1, Yugo Kanaya2, Hitoshi Irie2 |
1. Key Laboratory of Environmental Optical & Technology, Anhui Institute of Optics and Fine Mechanics, Hefei 230031, China
2. Frontier Research Center for Global Change, Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-Machi, Kanazawa-Ku, Yokohama, Kanagawa 236-0001, Japan |
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Abstract The study of comparison of NO2 SCD between two ground-based multi axis DOAS is introduced. The slant columns of NO2 from JAMASTEC are compared with those of AIOFM during the period from November to 31 December 2009. It says that the more signal to noise ratio is obtained by using the adjusted integral time rather than fixed settings; Two instrument show good accordance in the lower viewing angles, with the correlation coefficient of 0.995, but it becomes bad with higher viewing angles. The low deviation between the two instruments was achieved during the period from 9am to 17pm, the results in the 20 degree direction show best agreement with a deviation of 12%, but in other period the deviation becomes larger. The results in the visible range are better than those in the UV range, the residual in the fit decreases by more than 60%, and the results in the visible range show good agreements with those of AIOFM in the UV range during the whole day.
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Received: 2011-04-01
Accepted: 2011-08-09
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Corresponding Authors:
XIE Pin-hua
E-mail: phxie@aiofm.ac.cn
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