Research of NO2 vertical profiles with look-up table method based on MAX-DOAS

doi:10.1088/1674-1056/ac1415

中国物理B ›› 2022, Vol. 31 ›› Issue (1): 14212-014212.doi: 10.1088/1674-1056/ac1415

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

收稿日期:2021-06-08 修回日期:2021-07-11 接受日期:2021-07-14 出版日期:2021-12-03 发布日期:2021-12-18
通讯作者: Suwen Li E-mail:swli@chnu.edu.cn
基金资助:
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).

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

Received:2021-06-08 Revised:2021-07-11 Accepted:2021-07-14 Online:2021-12-03 Published:2021-12-18
Contact: Suwen Li E-mail:swli@chnu.edu.cn
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: multi-axis differential optical absorption spectroscopy, look-up table method, the cost function, NO₂ vertical profile

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.

Key words: multi-axis differential optical absorption spectroscopy, look-up table method, the cost function, NO₂ vertical profile

中图分类号: (Remote sensing; LIDAR and adaptive systems)

42.68.Wt

78.40.-q (Absorption and reflection spectra: visible and ultraviolet) 87.64.K- (Spectroscopy) 95.75.Rs (Remote observing techniques)

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[J]. 中国物理B, 2022, 31(1): 14212-014212.

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Research of NO₂ vertical profiles with look-up table method based on MAX-DOAS

Research of NO₂ vertical profiles with look-up table method based on MAX-DOAS

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