Evaluation and improvement of the cold pool parameterization in the LMDZ climate model against Large Eddy Simulations

Thiam, Mamadou Lamine; Hourdin, Frédéric; Grandpeix, Jean-Yves; Rio, Catherine; Coulon-Decorzens, Maëlle

doi:10.5194/acp-26-15975-2026

Articles | Volume 26, issue 21

https://doi.org/10.5194/acp-26-15975-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-15975-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 21

Research article

|

12 Nov 2026

Research article |

| 12 Nov 2026

Evaluation and improvement of the cold pool parameterization in the LMDZ climate model against Large Eddy Simulations

Mamadou Lamine Thiam, Frédéric Hourdin, Jean-Yves Grandpeix, Catherine Rio, and Maëlle Coulon-Decorzens

Data sets

Data and scripts used in the study: Evaluation and improvement of the cold pool parameterization in the LMDZ climate model against Large Eddy Simulations Mamadou Lamine Thiam et al. https://doi.org/10.5281/zenodo.20548562

Short summary

Explicit simulations (LES) of cold pools formed by the re-evaporation of convective rainfall are compared with a parameterization developed for a climate model. The study demonstrates the relevance of the parameterization principles. Improvements to the scheme and automatic tuning of free parameters also lead to very good quantitative agreement between the LES and the parameterization.