| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Research of NO2 vertical profiles with look-up table method based on MAX-DOAS |
| Yingying Guo(郭映映), Suwen Li(李素文)†, Fusheng Mou(牟福生), Hexiang Qi(齐贺香), and Qijin Zhang(张琦锦) |
| Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China |
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Abstract 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 (MAX-DOAS) technology is established for retrieving the tropospheric NO2 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 NO2 vertical column densities (VCDs) and profiles. The measured NO2 differential slant column densities (DSCDs) are compared with the NO2 DSCDs simulated by the atmospheric RTM, and the NO2 VCDs, the weight factor of NO2 in the boundary layer, and the boundary layer height are obtained by the minimization process. The look-up table is established to retrieve NO2 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.
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Received: 08 June 2021
Revised: 11 July 2021
Accepted manuscript online: 14 July 2021
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PACS:
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42.68.Wt
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(Remote sensing; LIDAR and adaptive systems)
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78.40.-q
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(Absorption and reflection spectra: visible and ultraviolet)
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87.64.K-
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(Spectroscopy)
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95.75.Rs
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(Remote observing techniques)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 41875040), the Top-notch Talents Program in Universities of Anhui Province, China (Grant No. gxbjZD2020067), and the Natural Science Research Projects of Universities in Anhui Province, China (Grant No. KJ2020A0029). |
Corresponding Authors:
Suwen Li
E-mail: swli@chnu.edu.cn
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Cite this article:
Yingying Guo(郭映映), Suwen Li(李素文), Fusheng Mou(牟福生), Hexiang Qi(齐贺香), and Qijin Zhang(张琦锦) Research of NO2 vertical profiles with look-up table method based on MAX-DOAS 2022 Chin. Phys. B 31 014212
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