Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 2
Articles | Volume 26, issue 2
https://doi.org/10.5194/acp-26-1277-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-1277-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 2
Research article
 | 
26 Jan 2026
Research article |  | 26 Jan 2026

Cloud Chamber Studies on the Linear Depolarisation Ratio of Small Cirrus Ice Crystals

Adrian Hamel, Martin Schnaiter, Masanori Saito, Robert Wagner, and Emma Järvinen

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Short summary
The depolarisation ratio of ice clouds is commonly measured by satellites and ground-based instruments to learn about ice particle shapes. In our cloud chamber experiments, we found that for small ice crystals, the depolarisation ratio is more strongly influenced by particle size than by nano-scale structure. The measured trends could be reproduced with numerical simulations. This result helps improve the interpretation of remote sensing data and the accuracy of light scattering models.
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