Articles | Volume 16, issue 10
Development and technical paper
30 May 2023
Development and technical paper |  | 30 May 2023

Assessing predicted cirrus ice properties between two deterministic ice formation parameterizations

Colin Tully, David Neubauer, and Ulrike Lohmann

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Short summary
A new method to simulate deterministic ice nucleation processes based on the differential activated fraction was evaluated against a cumulative approach. Box model simulations of heterogeneous-only ice nucleation within cirrus suggest that the latter approach likely underpredicts the ice crystal number concentration. Longer simulations with a GCM show that choosing between these two approaches impacts ice nucleation competition within cirrus but leads to small and insignificant climate effects.