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Proceedings Paper

Measurement of atmospheric NO2 profile using three-wavelength dual-differential absorption lidar
Author(s): Qiuwu Liu; Yafeng Chen; Jie Wang; Jian Huang; Shunxing Hu
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Paper Abstract

Lidar instruments are efficient detectors of air pollutants such as nitrogen dioxide (NO2). However, the measurement errors are not negligible due to the influence of the aerosol in the atmosphere. We present a novel lidar for measuring tropospheric NO2 vertical profiles. For improving the received powers, the emitter unit consists of two pulsed pump laser – dye laser combination, and use three wavelengths of 448.10nm, 447.20nm and 446.60 nm corresponding to the strong, medium and weak absorption of NO2 respectively. The effects of aerosol on tropospheric NO2 measurements by three - wavelength (448.10 -447.20 -446.60 nm) dual differential absorption lidar (dual-DIAL) and conventional two - wave length (448.10- 446.60nm) differential absorption lidar (DIAL) are theoretical analyzed, and their system err are computer simulated. Experimental results show that the three - wavelength dual - DIAL method is more effective to reduce the effects of aerosol than the two - wavelength DIAL method, and its system error is no more than 4% without correcting the aerosol effect.

Paper Details

Date Published: 15 November 2017
PDF: 7 pages
Proc. SPIE 10605, LIDAR Imaging Detection and Target Recognition 2017, 106053L (15 November 2017); doi: 10.1117/12.2295725
Show Author Affiliations
Qiuwu Liu, Anhui Institute of Optics and Fine Mechanics (China)
Univ. of Science and Technology of China (China)
Yafeng Chen, Anhui Institute of Optics and Fine Mechanics (China)
Univ. of Science and Technology of China (China)
Jie Wang, Anhui Institute of Optics and Fine Mechanics (China)
Univ. of Science and Technology of China (China)
Jian Huang, Anhui Institute of Optics and Fine Mechanics (China)
Shunxing Hu, Anhui Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 10605:
LIDAR Imaging Detection and Target Recognition 2017
Yueguang Lv; Weimin Bao; Weibiao Chen; Zelin Shi; Jianzhong Su; Jindong Fei; Wei Gong; Shensheng Han; Weiqi Jin; Jian Yang, Editor(s)

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