Research of NO_2 vertical profiles with look-up table method based on MAX-DOAS
Research of NO_2 vertical profiles with look-up table method based on MAX-DOAS
复制标题
基于MAX-DOAS的NO_2垂直剖面查表法研究
DOI：
10.1088/1674-1056/ac1415
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Zhang Qijin
中科院分区：
文献类型：
--
作者：
Guo Yingying;Li Suwen;Mou Fusheng;Qi Hexiang;Zhang Qijin
Obtaining the vertical distribution profile of trace gas is of great significance for studying the diffusion procedure of air pollution. In this article, a look-up table method based on multi-axis differential optical absorption spectroscopy (MAXDOAS) technology is established for retrieving the tropospheric NO_2 vertical distribution profiles. This method retrieves the aerosol extinction profiles with minimum cost function. Then, the aerosol extinction profiles and the atmospheric radiation transfer model (RTM) are employed to establish the look-up table for retrieving the NO_2 vertical column densities (VCDs) and profiles. The measured NO_2 differential slant column densities (DSCDs) are compared with the NO_2 DSCDs simulated by the atmospheric RTM, and the NO_2 VCDs, the weight factor of NO_2 in the boundary layer, and the boundary layer height are obtained by the minimization process. The look-up table is established to retrieve NO_2 VCDs based on MAX-DOAS measurements in Huaibei area, and the results are compared with the data from Copernicus Atmospheric Monitoring Service (CAMS) model. It is found that there are nearly consistent and the correlation coefficient R2 is more than 0.86. The results show that this technology provides a more convenient and accurate retrieval method for the stereoscopic monitoring of atmospheric environment.
