The polarimetric characteristics of dust with irregular shapes: evaluation of the spheroid model for single particles
Abstract µ m were investigated. Our findings show that the dust shapes have a substantial impact on the scattering matrix, and sometimes the sign of elements of the scattering matrix could be modified by changing the tunable parameters. The applicability of the spheroid model is significantly affected by the erosion degree and binding forces, and substantial deviations could be observed when the dust diameter is in the range of 0.8–2.0 µ m. The F 11 F 12/F 11 F 33/F 11 F 34/F 11 F 44/F 11 1: 1. The deviations of the spheroid model in estimating the polarized light were also investigated using the successive-order-of-scattering (SOS) vector radiative transfer (VRT) model. With a diameter (d p µ m, the relative difference of normalized radiance does not exceed 3 %, and the absolute values of the deviation of the polarized bidirectional reflectance factor (PBRF) and the ratio of radiance to polarized intensity (DoLP) are below 0.005 and 0.02, respectively. However, with the particle size increasing, the difference becomes much more substantial. The relative difference of the normalized radiance can exceed 10 %, and the deviations of the PBRF and DoLP can vary in the ranges of - 0.015 to 0.025 and - 0.05 to 0.15, respectively. Thus, the single spheroid model may lead to non-negligible deviations for estimating the polarimetric characteristics of single dust particles with more complex shapes. In this work, only the optical properties of single particles were considered. In the future, the applicability of an ensemble of spheroidal particles for reproducing the scattering properties and polarimetric characteristics of an ensemble of irregularly shaped dust particles should be further investigated.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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The polarimetric characteristics of dust with irregular shapes: evaluation of the spheroid model for single particles ; volume:15 ; number:9 ; year:2022 ; pages:2767-2789 ; extent:23
Atmospheric measurement techniques ; 15, Heft 9 (2022), 2767-2789 (gesamt 23)
- Creator
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Luo, Jie
Li, Zhengqiang
Fan, Cheng
Xu, Hua
Zhang, Ying
Hou, Weizhen
Qie, Lili
Gu, Haoran
Zhu, Mengyao
Li, Yinna
Li, Kaitao
- DOI
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10.5194/amt-15-2767-2022
- URN
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urn:nbn:de:101:1-2022051205252772625036
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:35 AM CEST
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Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Luo, Jie
- Li, Zhengqiang
- Fan, Cheng
- Xu, Hua
- Zhang, Ying
- Hou, Weizhen
- Qie, Lili
- Gu, Haoran
- Zhu, Mengyao
- Li, Yinna
- Li, Kaitao
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