Articles | Volume 26, issue 21
https://doi.org/10.5194/acp-26-15975-2026
https://doi.org/10.5194/acp-26-15975-2026
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

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This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
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Cited articles

Böing, S. J., Jonker, H. J. J., Siebesma, A. P., and Grabowski, W. W.: Influence of the subcloud layer on the development of a deep convective ensemble, J. Atmos. Sci., 69, 2682–2698, https://doi.org/10.1175/JAS-D-11-0317.1, 2012. a
Boucher, O., Denvil, S., Levavasseur, G., Cozic, A., Caubel, A., Foujols, M.-A., Meurdesoif, Y., Balkanski, Y., Checa-Garcia, R., Hauglustaine, D., Bekki, S., and Marchand, M.: IPSL IPSL-CM6A-LR-INCA model output prepared for CMIP6 RFMIP piClim-aer, Earth System Grid Federation [data set], https://doi.org/10.22033/ESGF/CMIP6.14604, 2020. a
Brown, A. R., Cederwall, R. T., Chlond, A., Duynkerke, P. G., Golaz, J.-C., Khairoutdinov, M., Lewellen, D. C., Lock, A. P., MacVean, M. K., Moeng, C.-H., Neggers, R. A. J., Siebesma, A. P., and Stevens, B.: Large-eddy simulation of the diurnal cycle of shallow cumulus convection over land, Q. J. Roy. Meteor. Soc., 128, 1075–1093, https://doi.org/10.1256/003590002320373210, 2002. a, b
Bryan, G. H.: Spurious convective organization in simulated squall lines owing to moist absolutely unstable layers, Mon. Weather Rev., 133, 1978–1997, https://doi.org/10.1175/MWR2952.1, 2005. a
Charba, J.: Application of gravity current model to analysis of squall-line gust front, Mon. Weather Rev., 102, 140–156, https://doi.org/10.1175/1520-0493(1974)102<0140:AOGCMT>2.0.CO;2, 1974. a
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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.
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