Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 11
Articles | Volume 26, issue 11
https://doi.org/10.5194/acp-26-7949-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-7949-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 11
Research article
 | 
10 Jun 2026
Research article |  | 10 Jun 2026

Prognostic modeling of total specific humidity variance induced by shallow convective clouds in a GCM

Louis d'Alençon, Frédéric Hourdin, and Catherine Rio

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Short summary
We develop and implement a prognostic model of the atmospheric humidity variance in a global climate model to improve cloud prediction. Results are systematically compared with a high-resolution model using automatic tuning tools. We show consistency with earlier work performed with a diagnostic model while providing significant improvements in the description and understanding of the atmospheric humidity distribution by highlighting the role of the air detrained from thermals.
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