Articles | Volume 21, issue 12
https://doi.org/10.5194/acp-21-9741-2021
https://doi.org/10.5194/acp-21-9741-2021
Research article
 | 
29 Jun 2021
Research article |  | 29 Jun 2021

Ice multiplication from ice–ice collisions in the high Arctic: sensitivity to ice habit, rimed fraction, ice type and uncertainties in the numerical description of the process

Georgia Sotiropoulou, Luisa Ickes, Athanasios Nenes, and Annica M. L. Ekman

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Cited articles

Andronache, C.: Characterization of Mixed-Phase Clouds: Contributions From the Field Campaigns and Ground Based Networks, in: Mixed-Phase Clouds: Observations and Modeling, edited by: Andronache, C., 97–120, Elsevier, the Netherlands, UK, USA, https://doi.org/10.1016/B978-0-12-810549-8.00005-2, 2017. 
Atkinson, J. D., Murray, B. J., Woodhouse, M. T., Whale, T. F., Baustian, K. J., Carslaw, K. S., Dobbie, S., O'Sullivan, D., and Malkin, T. L.: The importance of feldspar for ice nucleation by mineral dust in mixed-phase clouds, Nature, 498, 355–358, https://doi.org/10.1038/nature12278, 2013. 
Bigg, E. K. and Leck, C.: Cloud-active particles over the central Arctic Ocean, J. Geophys. Res., 106, 32155–32166, https://doi.org/10.1029/1999JD901152, 2001. 
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Cao, Y., Liang, S., Chen, X., He, T., Wang, D., and Cheng, X.: Enhanced wintertime greenhouse effect reinforcing Arctic amplification and initial sea-ice melting, Sci. Rep., 7, 8462, https://doi.org/10.1038/s41598-017-08545-2, 2017. 
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Short summary
Mixed-phase clouds are a large source of uncertainty in projections of the Arctic climate. This is partly due to the poor representation of the cloud ice formation processes. Implementing a parameterization for ice multiplication due to mechanical breakup upon collision of two ice particles in a high-resolution model improves cloud ice phase representation; however, cloud liquid remains overestimated.
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