Articles | Volume 12, issue 4
https://doi.org/10.5194/amt-12-2499-2019
https://doi.org/10.5194/amt-12-2499-2019
Research article
 | 
24 Apr 2019
Research article |  | 24 Apr 2019

Development of an incoherent broadband cavity-enhanced absorption spectrometer for measurements of ambient glyoxal and NO2 in a polluted urban environment

Shuaixi Liang, Min Qin, Pinhua Xie, Jun Duan, Wu Fang, Yabai He, Jin Xu, Jingwei Liu, Xin Li, Ke Tang, Fanhao Meng, Kaidi Ye, Jianguo Liu, and Wenqing Liu

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AR by Shuaixi Liang on behalf of the Authors (11 Mar 2019)  Author's response   Manuscript 
ED: Publish as is (29 Mar 2019) by Weidong Chen
AR by Shuaixi Liang on behalf of the Authors (04 Apr 2019)  Author's response   Manuscript 
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Short summary
A home-built instrument of an incoherent broadband cavity-enhanced absorption spectrometer is reported for sensitive detection of CHOCHO and NO2 in China's highly polluted environment. An NO2 spectral profile measured using the same spectrometer is applied as a reference spectral profile in the subsequent atmospheric spectral analysis and retrieval of NO2 and CHOCHO. This will provide an idea for solving the problem of cross-interference of strongly absorbing gases in weakly absorbing gases.