Measurements of NO2 mixing ratios with topographic target light scattering-differential optical absorption spectroscopy system and comparisons to point monitoring technique

doi:10.1088/1674-1056/21/11/114211

Abstract A topographic target light scattering-differential optical absorption spectroscopy (ToTaL-DOAS) system is developed for measuring average concentrations along a known optical path and studying surface-near distributions of atmospheric trace gases. The telescope of the ToTaL-DOAS system points to targets which are located at known distances from the measurement device and illuminated by sunlight. Average concentrations with high spatial resolution can be retrieved by receiving sunlight reflected from the targets. A filed measurement of NO₂ concentration is performed with the ToTaL-DOAS system in Shijiazhuang in the autumn of 2011. The measurement data are compared with concentrations measured by the point monitoring technique at the same site. The results show that the ToTaL-DOAS system is sensitive to the variation of NO₂ concentrations along the optical path.

Keywords: atmospheric optics target light scattering-differential optical absorption spectroscopy (ToTaL-DOAS) atmospheric trace gas averaging mixing ratio

Received: 13 January 2012
Revised: 28 June 2012
Accepted manuscript online:

PACS:	42.68.Ca	(Spectral absorption by atmospheric gases)
	42.68.-w	(Atmospheric and ocean optics)
	42.79.Qx	(Range finders, remote sensing devices; laser Doppler velocimeters, SAR, And LIDAR)
	42.79.-e	(Optical elements, devices, and systems)

Fund: Project supported by the National High Technology Research and Development of China (Grant No. 2009AA063006), the National Natural Science Foundation of China (Grant No. 40905010)，and the Special Project of Environmental Nonprofit Industry Researchm, China (Grant No. 201109007).

Corresponding Authors: Xie Pin-Hua
E-mail: phxie@aiofm.ac.cn

Cite this article:

Wang Yang (王杨), Li Ang (李昂), Xie Pin-Hua (谢品华), Zeng Yi (曾议), Wang Rui-Bin (王瑞斌), Chen Hao (陈浩), Pei Xian (裴显), Liu Jian-Guo (刘建国), and Liu Wen-Qing (刘文清 ) Measurements of NO₂ mixing ratios with topographic target light scattering-differential optical absorption spectroscopy system and comparisons to point monitoring technique 2012 Chin. Phys. B 21 114211

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Measurements of NO2 mixing ratios with topographic target light scattering-differential optical absorption spectroscopy system and comparisons to point monitoring technique

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Measurements of NO₂ mixing ratios with topographic target light scattering-differential optical absorption spectroscopy system and comparisons to point monitoring technique