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

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

doi:https://doi.org/10.5194/acp-21-9741-2021

Articles | Volume 21, issue 12

https://doi.org/10.5194/acp-21-9741-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-9741-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 12

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

Supplement

https://doi.org/10.5194/acp-21-9741-2021-supplement

Data sets

Dual-channel microwave radiometer measurements from the high-Arctic ASCOS expedition 2008 M. Shupe https://bolin.su.se/data/ascos-dual-channel-radiometer

Millimeter cloud radar Doppler moments measurements from the high-Arctic ASCOS expedition 2008 M. Shupe https://bolin.su.se/data/ascos-cloud-radar

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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.