Impact of particle shape on the morphology of noctilucent clouds

Kiliani, J.; Baumgarten, G.; Lübken, F.-J.; Berger, U.

doi:10.5194/acp-15-12897-2015

Articles | Volume 15, issue 22

https://doi.org/10.5194/acp-15-12897-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-15-12897-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 22

Research article

|

19 Nov 2015

Research article |

| 19 Nov 2015

Impact of particle shape on the morphology of noctilucent clouds

J. Kiliani, G. Baumgarten, F.-J. Lübken, and U. Berger

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Latest update: 06 Dec 2025

Short summary

For the first time the shape of noctilucent cloud particles is analyzed with a 3-D Lagrangian model. Three-color lidar measurements are compared directly to optical modeling of NLC simulations with non-spherical shapes: a mix of elongated and flattened cylindrical ice particles consistent with measurements. Comparison is best if flattened particles form a majority, with mean axis ratio around 2.8. NLCs from cylindrical particles are slightly brighter and consist of fewer but larger ice particle.