Influence of Scattering Model and Effective Particle Radius on Cirrus Cloud Optical Thickness Retrieval

Shu Li; Xiaobing Sun; Rufang Ti; Honglian Huang; Zhenting Chen; Yanli Qiao

doi:10.3788/AOS201838.0701001

Acta Optica Sinica, Volume. 38, Issue 7, 0701001(2018)

Influence of Scattering Model and Effective Particle Radius on Cirrus Cloud Optical Thickness Retrieval

Shu Li^1,2, Xiaobing Sun^1、*, Rufang Ti¹, Honglian Huang¹, Zhenting Chen^1,2, and Yanli Qiao¹

¹ Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China

² University of Science and Technology of China, Hefei, Anhui 230026, China

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Figures & Tables(9)

Fig. 1. Values of reflectance and polarized reflectance as a function of scattering angle for different COT and relative azimuth angles of (a) (b) 0°, (c) (d) 90° and (e) (f) 180°

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Fig. 2. (a) Phase function of different scattering models; (b) values of reflectance as a function of COT for different scattering models

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Fig. 3. Phase functions for different effective radii in models of (a) GHM, (b) ASC, (c) SC; (d) asymmetry parameter as a function of effective radius

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Fig. 4. Values of reflectance as a function of COT for different effective radii. (a) GHM; (b) ASC; (c) SC

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Fig. 5. Flow chart of COT retrieval over ocean by PLODER3 data

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Fig. 6. Inverse results of COT. (a) POLDER; (b) GHM; (c) ASC; (d) SC

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Fig. 7. Comparison of the COT based on different cirrus bulk scattering models. (a) POLDER and GHM; (b) POLDER and ASC; (c) POLDER and SC; (d) ASC and GHM; (e) ASC and SC; (f) SC and GHM

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Table 1. Parameters of GHM, ASC, SC models and POLDER product
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Table 1. Parameters of GHM, ASC, SC models and POLDER product
Model Effective radius /μm Asymmetry parameter
IHM 10 0.7665
GHM 10 0.7817
ASC 10 0.7525
SC 10 0.7839

Table 2. Relative errorrange of retrieval results between GHM, ASC and SC
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Table 2. Relative errorrange of retrieval results between GHM, ASC and SC
Model Relative error range
GHM and ASC 7% to 21%
GHM and SC 3% to 16%
SC and ASC 12% to 30%

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Shu Li, Xiaobing Sun, Rufang Ti, Honglian Huang, Zhenting Chen, Yanli Qiao. Influence of Scattering Model and Effective Particle Radius on Cirrus Cloud Optical Thickness Retrieval[J]. Acta Optica Sinica, 2018, 38(7): 0701001

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