Articles | Volume 16, issue 19
Atmos. Chem. Phys., 16, 12411–12424, 2016
https://doi.org/10.5194/acp-16-12411-2016
Atmos. Chem. Phys., 16, 12411–12424, 2016
https://doi.org/10.5194/acp-16-12411-2016

Research article 04 Oct 2016

Research article | 04 Oct 2016

What controls the low ice number concentration in the upper troposphere?

Cheng Zhou et al.

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Short summary
We examined the different ice nucleation parameterization factors that affect the simulated ice number concentrations in cirrus clouds in the upper troposphere using the CAM5 model. We examined the effect from three different updraft velocities (from low to high), two different water vapour accommodation coefficients (α = 0.1 or 1), the effect of including vapour deposition onto pre-existing ice particles during ice nucleation, and the effect of including SOA as heterogeneous ice nuclei.
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