Empirical Orthogonal Function Aerosol Fine Particle Optical Depth Inversion Algorithm Based on Directional Polarimetric Camera

Wenjie Li; Shurong Wang; Changxiang Yan; Ning Ding

doi:10.3788/LOP221202

Laser & Optoelectronics Progress, Volume. 60, Issue 9, 0901003(2023)

Empirical Orthogonal Function Aerosol Fine Particle Optical Depth Inversion Algorithm Based on Directional Polarimetric Camera

Wenjie Li^1,2, Shurong Wang^4,5、**, Changxiang Yan^1,3、*, and Ning Ding^1,2

Author Affiliations

¹Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, Jilin, China

²University of Chinese Academy of Sciences, Beijing 100049, China

³Research Center for Materials and Optoelectronics, University of Chinese Academy of Sciences, Beijing 100049, China

⁴School of Physics and Optoelectronic Engineering, Foshan University of Science and Technology, Foshan 528051, Guangdong, China

⁵Guangdong-Hong Kong-Macao Intelligent Micro-Nano Photoelectric Technology Joint Laboratory, Foshan 528051, Guangdong, China

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Figures & Tables(11)

Fig. 1. Process of inversion of optical thickness of aerosol fine particles

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Fig. 2. Pixel surface radiation term

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Fig. 3. Variation curves of scattering angle and polarization phase function

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Fig. 4. 490 nm radiation intensity map and aerosol fine particle optical thickness map. (a) 490 nm radiation intensity map; (b) optical thickness map of aerosol fine particles in this study; (c) aerosol fine particle optical thickness map of MYDO4

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Fig. 5. Data comparison of Beijing station

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Fig. 6. Data comparison of Xianghe station

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Fig. 7. Data comparison of Hong Kong station

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Fig. 8. Monthly average data on optical depth of aerosol fine particles. (a) 201903AOD_f_aver; (b) 201904 AOD_f_aver; (c) 201905 AOD_f_aver; (d) 201906 AOD_f_aver; (e) 201907 AOD_f _aver; (f) 201908 AOD_f_aver; (g) 201909 AOD_f_aver; (h) 201910 AOD_f_aver; (i) 201911 AOD_f_aver; (j) 201912 AOD_f_aver

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Table 1. Simulation parameters of aerosol scale spectrum
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Table 1. Simulation parameters of aerosol scale spectrum
Aerosol modality $m_{r}$ $m_{i}$ $V / (μ m^{3} \cdot μ m^{- 2})$ $r_{g} / μ m$ $σ$
Fine mode 1.44 0.011 0.075 0.25 0.45
Coarse mode 1.55 0.003 0.018 2.00 0.60

Table 2. Spectral distribution parameters of aerosol fine particles
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Table 2. Spectral distribution parameters of aerosol fine particles
Parameter Value
$m_{r}$ 1.45
$m_{i}$ 0.01
$r_{g}$ 0.05-0.15（interval 0.01）
$σ$ 0.40

Table 3. Influence of polarization calibration error and standard deviation error on algorithm results
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Table 3. Influence of polarization calibration error and standard deviation error on algorithm results
Algorithm Calibration error /% Standard deviation error /%
Proposed algorithm 7.5 24
OGRM 7.3 28

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Wenjie Li, Shurong Wang, Changxiang Yan, Ning Ding. Empirical Orthogonal Function Aerosol Fine Particle Optical Depth Inversion Algorithm Based on Directional Polarimetric Camera[J]. Laser & Optoelectronics Progress, 2023, 60(9): 0901003

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