A Scanning Multi-Axis Differential Optical Absorption Spectroscopy System for Measurement of Tropospheric NO2 in Beijing
LI Ang1, XIE Pin-Hua1, LIU Cheng2, LIU Jian-Guo1, LIU Wen-Qing1
1Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 2300312Satellite Group Mainz-Heidelberg, Max Planck Institute for Chemistry, Mainz D-55128, Germany
A Scanning Multi-Axis Differential Optical Absorption Spectroscopy System for Measurement of Tropospheric NO2 in Beijing
LI Ang1;XIE Pin-Hua1;LIU Cheng2;LIU Jian-Guo1;LIU Wen-Qing1
1Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 2300312Satellite Group Mainz-Heidelberg, Max Planck Institute for Chemistry, Mainz D-55128, Germany
A scanning multi-axis differential optical absorption spectroscopy (DOAS) system is developed for monitoring tropospheric NO2 abundance. Measurements at different viewing angles near the horizon can be performed sequentially with one telescope collecting scattered sunlight reflected by a moving mirror. Tropospheric NO2 diurnal variations can be derived from slant column densities (SCDs) of different elevation angles. The result from a field campaign in Beijing in summer of 2005 reveals potential possibility for the monitoring of tropospheric NO2 by multi-axis DOAS technique.
A scanning multi-axis differential optical absorption spectroscopy (DOAS) system is developed for monitoring tropospheric NO2 abundance. Measurements at different viewing angles near the horizon can be performed sequentially with one telescope collecting scattered sunlight reflected by a moving mirror. Tropospheric NO2 diurnal variations can be derived from slant column densities (SCDs) of different elevation angles. The result from a field campaign in Beijing in summer of 2005 reveals potential possibility for the monitoring of tropospheric NO2 by multi-axis DOAS technique.
LI Ang;XIE Pin-Hua;LIU Cheng;LIU Jian-Guo;LIU Wen-Qing. A Scanning Multi-Axis Differential Optical Absorption Spectroscopy System for Measurement of Tropospheric NO2 in Beijing[J]. 中国物理快报, 2007, 24(10): 2859-2862.
LI Ang, XIE Pin-Hua, LIU Cheng, LIU Jian-Guo, LIU Wen-Qing. A Scanning Multi-Axis Differential Optical Absorption Spectroscopy System for Measurement of Tropospheric NO2 in Beijing. Chin. Phys. Lett., 2007, 24(10): 2859-2862.
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