Multi-thermals and high concentrations of secondary ice: a modelling study of convective clouds during the Ice in Clouds Experiment – Dust (ICE-D) campaign

Cui, Zhiqiang; Blyth, Alan; Huang, Yahui; Lloyd, Gary; Choularton, Thomas; Bower, Keith; Field, Paul; Hawker, Rachel; Bennett, Lindsay

doi:https://doi.org/10.5194/acp-22-1649-2022

Articles | Volume 22, issue 3

https://doi.org/10.5194/acp-22-1649-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-1649-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 3

Research article

|

03 Feb 2022

Research article |

| 03 Feb 2022

Multi-thermals and high concentrations of secondary ice: a modelling study of convective clouds during the Ice in Clouds Experiment – Dust (ICE-D) campaign

Zhiqiang Cui, Alan Blyth, Yahui Huang, Gary Lloyd, Thomas Choularton, Keith Bower, Paul Field, Rachel Hawker, and Lindsay Bennett

Model code and software

CM1 Model G. H. Bryan https://www2.mmm.ucar.edu/people/bryan/cm1/

Short summary

High concentrations of ice particles were observed at temperatures greater than about –8 C. The default scheme of the secondary ice production cannot explain the high concentrations. Relaxing the conditions for secondary ice production or considering dust aerosol alone is insufficient to produce the observed amount of ice particles. It is likely that multi-thermals play an important role in producing very high concentrations of secondary ice particles in some tropical clouds.