Preliminary sensitivity study of aerosol layer height from ultraviolet multiangle polarimetric remote sensing measurements

GU Haoran; LI Zhengqiang; HOU Weizhen; QIU Zhenwei; LIU Zhenhai; ZHU Jun; QIE Lili; LUO Jie; HONG Jin; MA Jinji

doi:10.3969/j.issn.1673-6141.2023.04.008

Journal of Atmospheric and Environmental Optics, Volume. 18, Issue 4, 357(2023)

Preliminary sensitivity study of aerosol layer height from ultraviolet multiangle polarimetric remote sensing measurements

GU Haoran^1,4, LI Zhengqiang^1,5、*, HOU Weizhen^1,5、**, QIU Zhenwei², LIU Zhenhai², ZHU Jun³, QIE Lili¹, LUO Jie¹, HONG Jin², and MA Jinji⁴

Author Affiliations

¹State Environmental Protection Key Laboratory of Satellite Remote Sensing, Aerospace Information Research Institute,Chinese Academy of Sciences, Beijing 100101, China

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

³DFH Satellite Co. Ltd, Beijing 100094, China

⁴School of Geography and Tourism, Anhui Normal University, Wuhu 241003, China

⁵University of Chinese Academy of Sciences, Beijing 100049, China

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Figures & Tables(12)

Fig. 1. Observation geometries (a) and scattering angle distribution (b) of the instrument adopted in the research

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Fig. 2. Simulation results varying with the AOD and H at 365 nm. (a) TOA normalized radiance;(b) TOA normalized polarized radiance

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Fig. 3. The Jacobians results for I and D_OLPvarying with the AOD，H at 365 nm. (a) $\frac{\partial I}{\partial H}$ ; (b) $\frac{\partial D_{O L P}}{\partial H}$

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Fig. 4. The DFS (a) and posteriori error (b) of ALH for different experiments scheme

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Fig. 5. The DFS of ALH changes with the number of viewing angles under different surface types. (a) Vegetation surface;(b) bare soil surface

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Fig. 6. The DFS of ALH varying with AOD at different scenarios. (a) Fine-dominated aerosol; (b) coarse-dominated aerosol

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Fig. 7. The DFS of ALH varying with aerosol model errors at different scenarios. (a) Fine-dominated aerosol；(b) coarse-dominated aerosol

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Table 1. Multi-viewing observation geometries for forward simulations

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Table 1. Multi-viewing observation geometries for forward simulations

Geometry scenarios	Solar zenith range/(°)	Viewing zenith range/(°)	Relative azimuth range/(°)	Scattering angle range/(°)
Geometry 1	54.12～54.79	44.39～64.09	5.78～330.03	137.76～173.68
Geometry 2	32.86～33.59	25.59～58.64	106.99～248.41	105.05～121.30
Geometry 3	53.18～53.74	28.8～61.06	97.15～229.85	80.28～109.40
Geometry 4	77.63～78.08	37.15～61.87	0.65～298.07	104.04～145.82

Table 2. The aerosol model parameters
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Table 2. The aerosol model parameters
Scenarios $m_{r}$ (550 nm) $m_{i}$ (550 nm) $r_{e f f}$ /μm $V_{e f f}$ $F_{M F V}$ $V_{0}$
Fine-dominated 0.549 0.003 0.21 0.5036 0.8 0.093
Coarse-dominated 1.434 0.011 1.90 0.1915 0.2 0.246

Table 3. The surface model parameters
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Table 3. The surface model parameters
Surface type $f_{i s o} (365 n m)$ $f_{i s o} (388 n m)$ $k_{1}$ $k_{2}$ $C$ $I_{N D V}$
Vegetation 0.0186 0.0185 0.158 0.547 6.57 0.62
Bare soil 0.0702 0.0683 0.087 0.668 6.9 0.03

Table 4. Numerical experiments scheme
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Table 4. Numerical experiments scheme
Scheme name 365 nm Radiance 365 nm Polarization 388 nm Radiance 388 nm Polarization
A-I √ × × ×
A-IP √ √ × ×
B-I × × √ ×
B-IP (case1) × × √ √
AB-I (case2) √ × √ ×
AB-IP √ √ √ √

Table 5. DFS of ALH at B-I、B-IP and AB-I scheme
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Table 5. DFS of ALH at B-I、B-IP and AB-I scheme
Surface type Aerosol Scenarios DFS
B-I B-IP AB-I
Vegetation Fine-dominated 0.64 0.68 0.71
Coarse-dominated 0.51 0.55 0.60
Bare soil Fine-dominated 0.44 0.60 0.54
Coarse-dominated 0.30 0.47 0.40

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Haoran GU, Zhengqiang LI, Weizhen HOU, Zhenwei QIU, Zhenhai LIU, Jun ZHU, Lili QIE, Jie LUO, Jin HONG, Jinji MA. Preliminary sensitivity study of aerosol layer height from ultraviolet multiangle polarimetric remote sensing measurements[J]. Journal of Atmospheric and Environmental Optics, 2023, 18(4): 357

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