• Journal of Atmospheric and Environmental Optics
  • Vol. 17, Issue 3, 360 (2022)
Lulu CHENG*, Wenjie SHI, Guo XIA, Jiangtao WANG, Qiaoqin CHEN, and Shiqun JIN
Author Affiliations
  • [in Chinese]
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    DOI: 10.3969/j.issn.1673-6141.2022.03.008 Cite this Article
    CHENG Lulu, SHI Wenjie, XIA Guo, WANG Jiangtao, CHEN Qiaoqin, JIN Shiqun. Information content analysis and sensitivity of retrieval of aerosol vertical profiles using polarimetric oxygen A-band spectra[J]. Journal of Atmospheric and Environmental Optics, 2022, 17(3): 360 Copy Citation Text show less

    Abstract

    In order to evaluate the amount of vertical information on aerosol extinction profiles extracted from the O2 A-band polarization spectrum and the influence of improving spectral resolution on aerosol vertical profile information measured by polarization, the Unified Linearized Vector Radiative Transfer Model (UNL-VRTM) is used to analyze the information from satellite measurements of O2 A-band degree of linear polarization (DoLP) and the influencing factors of aerosol peak height information of DoLP under different observation conditions and spectral resolution. Simulation results show that DoLP contains more information content for aerosol peak height than radiation intensity, and the maximum degree of freedom of signal (DFS) of radiation intensity is 0.49, while the DFS of DoLP is 0.76. In addition, with the improvement of spectral resolution, the information content of aerosol peak height increases, and the dependence on surface albedo, observation geometry and prior error is greatly reduced.
    CHENG Lulu, SHI Wenjie, XIA Guo, WANG Jiangtao, CHEN Qiaoqin, JIN Shiqun. Information content analysis and sensitivity of retrieval of aerosol vertical profiles using polarimetric oxygen A-band spectra[J]. Journal of Atmospheric and Environmental Optics, 2022, 17(3): 360
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