Aerosol Inversion Test of Directional Polarimetric Camera Based on Posterior Error Analysis

Han Wang; Xiaobing Sun; Meiru Zhao; Kai Qin

doi:10.3788/AOS230569

Acta Optica Sinica, Volume. 43, Issue 24, 2428007(2023)

Aerosol Inversion Test of Directional Polarimetric Camera Based on Posterior Error Analysis

Han Wang^1、*, Xiaobing Sun², Meiru Zhao^3、**, and Kai Qin¹

¹School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China

²Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, Anhui, China

³School of Geography and Tourism, Anhui Normal University, Wuhu 241000, Anhui, China

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Figures & Tables(7)

Fig. 1. Wavelength dependences of retrieval residuals. (a) DPC; (b) POLDER

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Fig. 2. Scattering angle dependences of retrieval residuals in non-mountain area. (a) DPC; (b) POLDER

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Fig. 3. Scattering angle dependences of retrieval residuals in mountain area. (a) DPC; (b) POLDER

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Fig. 4. Scatter diagrams of retrieved AODs from DPC and POLDER in mountain and non-mountain area. (a) Non-mountain, DPC; (b) mountain, DPC; (c) non-mountain, POLDER; (d) mountain, POLDER

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Fig. 5. Scatter diagrams of retrieved AODs from DPC. (a) Only use intensity information; (b) use intensity and polarization information

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Table 1. Description of data used in DPC inversion test
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Table 1. Description of data used in DPC inversion test
Data source Data level Collection time Parameter
DPC L1 2022 Multi-spectral intensity and polarized reflectance，observation geometry，and so on.
POLDER L1 2012
AERONET Level 2.0 2012 and 2022 Multi-spectral AODs

Table 2. Statistical parameters from DPC and POLDER retrieved AODs at different wavelengths

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Table 2. Statistical parameters from DPC and POLDER retrieved AODs at different wavelengths

Sensor	DPC					POLDER
Wavelength / nm	443	490	565	670	865	443	490	565	670	865
k	1.02	0.93	0.88	0.99	1.28	0.91	0.89	0.95	1.02	1.05
Mean value	0.33	0.28	0.26	0.21	0.28	0.35	0.29	0.24	0.21	0.18
Mean bias	0.095	0.044	0.069	0.052	0.112	0.087	0.075	0.062	0.034	0.041
R	0.81	0.85	0.83	0.84	0.81	0.89	0.88	0. 87	0. 89	0.91
RMSE	0.25	0.21	0.20	0.16	0.23	0.24	0.19	0.19	0.18	0.15
Within R_EE / %	45.02	51.18	50.50	53.99	31.33	48.73	58.46	55.56	60.96	59.58
Above R_EE / %	39.83	33.08	23.47	30.17	53.04	33.18	29.82	33.05	25.05	24.16
Below R_EE / %	15.15	15.74	26.03	15.84	15.63	18.09	11.72	11.39	13.99	16.26

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Han Wang, Xiaobing Sun, Meiru Zhao, Kai Qin. Aerosol Inversion Test of Directional Polarimetric Camera Based on Posterior Error Analysis[J]. Acta Optica Sinica, 2023, 43(24): 2428007

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