Articles | Volume 25, issue 21
https://doi.org/10.5194/acp-25-14153-2025
https://doi.org/10.5194/acp-25-14153-2025
Research article
 | 
30 Oct 2025
Research article |  | 30 Oct 2025

Modelling contrail cirrus using a double-moment cloud microphysics scheme in the UK Met Office Unified Model

Weiyu Zhang, Paul R. Field, Kwinten Van Weverberg, Piers M. Forster, Cyril J. Morcrette, and Alexandru Rap

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Short summary
Contrail cirrus is the largest, yet the most uncertain, aviation climate impact term. A newly implemented contrail cirrus scheme in a double-moment cloud microphysics scheme in climate model realistically reproduces the contrail evolution and provides regional forcing estimates within the range reported by other models. The work highlights the importance of initial contrail characteristics and the need for detailed cloud particle representations in climate model contrail simulations.
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