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.
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.
the Creative Commons Attribution 4.0 License.
Evaluation and improvement of the cold pool parameterization in the LMDZ climate model against Large Eddy Simulations
Mamadou Lamine Thiam
CORRESPONDING AUTHOR
Laboratoire de Météorologie Dynamique (LMD), Institut Pierre-Simon Laplace (IPSL), Centre National de la Recherche Scientifique (CNRS), Sorbonne University, 4 place Jussieu, 75005 Paris, France
Frédéric Hourdin
Laboratoire de Météorologie Dynamique (LMD), Institut Pierre-Simon Laplace (IPSL), Centre National de la Recherche Scientifique (CNRS), Sorbonne University, 4 place Jussieu, 75005 Paris, France
Jean-Yves Grandpeix
Laboratoire de Météorologie Dynamique (LMD), Institut Pierre-Simon Laplace (IPSL), Centre National de la Recherche Scientifique (CNRS), Sorbonne University, 4 place Jussieu, 75005 Paris, France
Catherine Rio
Météo-France, Centre National de la Recherche Scientifique (CNRS), University of Toulouse, Centre National de Recherches Météorologiques (CNRM), 42 avenue Gaspard Coriolis, 31100 Toulouse, France
Maëlle Coulon-Decorzens
Laboratoire de Météorologie Dynamique (LMD), Institut Pierre-Simon Laplace (IPSL), Centre National de la Recherche Scientifique (CNRS), Sorbonne University, 4 place Jussieu, 75005 Paris, France
Météo-France, Centre National de la Recherche Scientifique (CNRS), University of Toulouse, Centre National de Recherches Météorologiques (CNRM), 42 avenue Gaspard Coriolis, 31100 Toulouse, France
Related authors
No articles found.
Robert Schoetter, Cyril Caliot, Florent Retailleau, Tim Nagel, Christophe Coustet, Vincent Eymet, Vincent Forest, Frédéric Hourdin, Atsushi Inagaki, Simone Kotthaus, Valéry Masson, William Morrison, and Najda Villefranque
EGUsphere, https://doi.org/10.5194/egusphere-2026-2061, https://doi.org/10.5194/egusphere-2026-2061, 2026
This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
Short summary
Short summary
Temperature, humidity, radiation, and wind can have a negative impact on human comfort and infrastructure in urban areas. Building-resolving meteorological models can help to quantify such meteorological impacts and the potential benefits of adaptation measures to climate change. Here, a new unified algorithm to calculate the radiation, heat conduction, and sensible heat exchange in urban areas is coupled with an atmospheric model, and evaluated against experimental data.
Louis d'Alençon, Frédéric Hourdin, and Catherine Rio
Atmos. Chem. Phys., 26, 7949–7966, https://doi.org/10.5194/acp-26-7949-2026, https://doi.org/10.5194/acp-26-7949-2026, 2026
Short summary
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.
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
Chatfield, R. B. and Brost, R. A.: A two-stream model of the vertical transport of trace species in the convective boundary layer, J. Geophys. Res.-Atmos., 92, 13263–13276, https://doi.org/10.1029/JD092iD11p13263, 1987. a
Couvreux, F., Rio, C., Guichard, F., Lothon, M., Canut, G., Bouniol, D., and Gounou, A.: Initiation of daytime local convection in a semi-arid region analysed with high-resolution simulations and AMMA observations, Q. J. Roy. Meteor. Soc., 138, 56–71, https://doi.org/10.1002/qj.903, 2012. a
Couvreux, F., Hourdin, F., Williamson, D., Roehrig, R., Volodina, V., Villefranque, N., Rio, C., Audouin, O., Salter, J., Bazile, E., Brient, F., Favot, F., Honnert, R., Lefebvre, M.-P., Madeleine, J.-B., Rodier, Q., and Xu, W.: Process-based climate model development harnessing machine learning: I. A calibration tool for parameterization improvement, J. Adv. Model. Earth Sy., 13, e2020MS002217, https://doi.org/10.1029/2020MS002217, 2021. a, b, c, d
Daleu, C. L., Plant, R. S., Woolnough, S. J., Sessions, S., Herman, M. J., Sobel, A., Wang, S., Kim, D., Cheng, A., Bellon, G., Peyrille, P., Ferry, F., Siebesma, P., and van Ulft, L.: Intercomparison of methods of coupling between convection and large-scale circulation: 1. Comparison over uniform surface conditions, J. Adv. Model. Earth Sy., 7, 1576–1601, https://doi.org/10.1002/2015MS000468, 2015. a
Del Genio, A. D., Wu, J., Wolf, A. B., Chen, Y., Yao, M.-S., and Kim, D.: Constraints on cumulus parameterization from simulations of observed MJO events, J. Climate, 28, 6419–6442, https://doi.org/10.1175/JCLI-D-14-00832.1, 2015. a, b
Diallo, F. B., Hourdin, F., Rio, C., Traore, A.-K., Mellul, L., Guichard, F., and Kergoat, L.: The surface energy budget computed at the grid-scale of a climate model challenged by station data in West Africa, J. Adv. Model. Earth Sy., 9, 2710–2738, https://doi.org/10.1002/2017MS001081, 2017. a, b
Dirmeyer, P. A., Cash, B. A., Kinter, J. L., Jung, T., Marx, L., Satoh, M., Stan, C., Tomita, H., Towers, P., Wedi, N., Achuthavarier, D., Adams, J. M., Altshuler, E. L., Huang, B., Jin, E. K., and Manganello, J.: Simulating the diurnal cycle of rainfall in global climate models: Resolution versus parameterization, Clim. Dynam., 39, 399–418, https://doi.org/10.1007/s00382-011-1127-9, 2012. a
Dorrestijn, J., Crommelin, D. T., Siebesma, A. P., and Jonker, H. J. J.: Stochastic parameterization of shallow cumulus convection estimated from high-resolution model data, Theor. Comp. Fluid Dyn., 27, 133–148, https://doi.org/10.1007/s00162-012-0281-y, 2013. a
Droegemeier, K. K. and Wilhelmson, R. B.: Numerical simulation of thunderstorm outflow dynamics. Part I: Outflow sensitivity experiments and turbulence dynamics, J. Atmos. Sci., 44, 1180–1210, https://doi.org/10.1175/1520-0469(1987)044<1180:NSOTOD>2.0.CO;2, 1987. a
Emanuel, K. A.: A scheme for representing cumulus convection in large-scale models, J. Atmos. Sci., 48, 2313–2335, https://doi.org/10.1175/1520-0469(1991)048<2313:ASFRCC>2.0.CO;2, 1991. a, b, c
Feng, Z., Hagos, S., Rowe, A. K., Burleyson, C. D., Martini, M. N., and de Szoeke, S. P.: Mechanisms of convective cloud organization by cold pools over tropical warm ocean during the AMIE/DYNAMO field campaign, J. Adv. Model. Earth Sy., 7, 357–381, https://doi.org/10.1002/2014MS000384, 2015. a, b
Freitas, S. R., Grell, G. A., Chovert, A. D., Silva Dias, M. A. F., and de Lima Nascimento, E.: A parameterization for cloud organization and propagation by evaporation-driven cold pool edges, J. Adv. Model. Earth Sy., 16, e2023MS003982, https://doi.org/10.1029/2023MS003982, 2024. a, b, c, d
Gettelman, A., Truesdale, J. E., Bacmeister, J. T., Caldwell, P. M., Neale, R. B., Bogenschutz, P. A., and Simpson, I. R.: The Single Column Atmosphere Model version 6 (SCAM6): Not a scam but a tool for model evaluation and development, J. Adv. Model. Earth Sy., 11, 1381–1401, https://doi.org/10.1029/2018MS001578, 2019. a
Grandpeix, J.-Y., Phillips, V., and Tailleux, R.: Improved mixing representation in Emanuel's convection scheme, Quarterly Journal of the Royal Meteorological Society: A journal of the atmospheric sciences, Applied Meteorology and Physical Oceanography, 130, 3207–3222, https://doi.org/10.1256/qj.03.144, 2004. a
Grandpeix, J.-Y., Lafore, J.-P., and Cheruy, F.: A density current parameterization coupled with Emanuel's convection scheme. Part II: 1D simulations, J. Atmos. Sci., 67, 898–922, https://doi.org/10.1175/2009JAS3045.1, 2010. a, b
Grant, L. D., Lane, T. P., and van den Heever, S. C.: The role of cold pools in tropical oceanic convective systems, J. Atmos. Sci., 75, 2615–2634, https://doi.org/10.1175/JAS-D-17-0352.1, 2018. a
Guichard, F., Petch, J. C., Redelsperger, J.-L., Bechtold, P., Chaboureau, J.-P., Cheinet, S., Grabowski, W., Grenier, H., Jones, C. G., Köhler, M., Piriou, J.-M., Tailleux, R., and Tomasini, M.: Modelling the diurnal cycle of deep precipitating convection over land with cloud-resolving models and single-column models, Q. J. Roy. Meteor. Soc., 130, 3139–3172, https://doi.org/10.1002/qj.503, 2004. a
Haerter, J. O. and Schlemmer, L.: Intensified cold pool dynamics under stronger surface heating, Geophys. Res. Lett., 45, 6299–6310, https://doi.org/10.1029/2017GL076874, 2018. a
Hourdin, F., Couvreux, F., and Menut, L.: Parameterization of the Dry Convective Boundary Layer Based on a Mass Flux Representation of Thermals, J. Atmos. Sci., 59, 1105–1123, https://doi.org/10.1175/1520-0469(2002)059<1105:POTDCB>2.0.CO;2, 2002. a
Hourdin, F., Musat, I., Bony, S., Braconnot, P., Codron, F., Dufresne, J.-L., Fairhead, L., Filiberti, M.-A., Friedlingstein, P., Grandpeix, J.-Y., Krinner, G., LeVan, P., Li, Z.-X., and Lott, F.: The LMDZ4 general circulation model: climate performance and sensitivity to parametrized physics with emphasis on tropical convection, Clim. Dynam., 27, 787–813, https://doi.org/10.1007/s00382-006-0158-0, 2006. a
Hourdin, F., Foujols, M.-A., Codron, F., Guemas, V., Dufresne, J.-L., Bony, S., Denvil, S., Guez, L., Lott, F., Ghattas, J., Braconnot, P., Marti, O., Meurdesoif, Y., and Bopp, L.: Impact of the LMDZ atmospheric grid configuration on the climate and sensitivity of the IPSL-CM5A coupled model, Clim. Dynam., 40, 2167–2192, https://doi.org/10.1007/s00382-012-1411-3, 2013. a
Hourdin, F., Jam, A., Rio, C., Couvreux, F., Sandu, I., Lefebvre, M.-P., Brient, F., and Idelkadi, A.: Unified Parameterization of Convective Boundary Layer Transport and Clouds With the Thermal Plume Model, J. Adv. Model. Earth Sy., 11, 2910–2933, https://doi.org/10.1029/2019MS001666, 2019. a
Hourdin, F., Rio, C., Grandpeix, J.-Y., Madeleine, J.-B., Cheruy, F., Rochetin, N., Jam, A., Musat, I., Idelkadi, A., Fairhead, L., Foujols, M.-A., Mellul, L., Traore, A.-K., Dufresne, J.-L., Boucher, O., Lefebvre, M.-P., Millour, E., Vignon, E., Jouhaud, J., and Diallo, F. B.: LMDZ6A: The atmospheric component of the IPSL climate model with improved and better tuned physics, J. Adv. Model. Earth Sy., 12, e2019MS001892, https://doi.org/10.1029/2019MS001892, 2020a. a, b
Hourdin, F., Rio, C., Jam, A., Traore, A.-K., and Musat, I.: Convective Boundary Layer Control of the Sea Surface Temperature in the Tropics, J. Adv. Model. Earth Sy., 12, e01988, https://doi.org/10.1029/2019MS001988, 2020b. a
Hourdin, F., Williamson, D., Rio, C., Couvreux, F., Roehrig, R., Villefranque, N., Musat, I., Fairhead, L., Diallo, F. B., and Volodina, V.: Process-based climate model development harnessing machine learning: II. Model calibration from single column to global, J. Adv. Model. Earth Sy., 13, e2020MS002 225, https://doi.org/10.1029/2020MS002225, 2021. a, b, c
Jam, A., Hourdin, F., Rio, C., and Couvreux, F.: Resolved Versus Parametrized Boundary-Layer Plumes. Part III: Derivation of a Statistical Scheme for Cumulus Clouds, Bound.-Lay. Meteorol., 147, 421–441, https://doi.org/10.1007/s10546-012-9789-3, 2013. a
Jeevanjee, N. and Romps, D. M.: Convective self-aggregation, cold pools, and domain size, Geophys. Res. Lett., 40, 994–998, https://doi.org/10.1002/grl.50204, 2013. a
Kendon, E. J., Roberts, N. M., Senior, C. A., and Roberts, M. J.: Realism of rainfall in a very high-resolution regional climate model, J. Climate, 25, 5791–5806, https://doi.org/10.1175/JCLI-D-11-00562.1, 2012. a
Khairoutdinov, M. and Randall, D.: High-resolution simulation of shallow-to-deep convection transition over land, J. Atmos. Sci., 63, 3421–3436, https://doi.org/10.1175/JAS3810.1, 2006. a
Khairoutdinov, M. F. and Randall, D. A.: Cloud resolving modeling of the ARM summer 1997 IOP: Model formulation, results, uncertainties, and sensitivities, J. Atmos. Sci., 60, 607–625, https://doi.org/10.1175/1520-0469(2003)060<0607:CRMOTA>2.0.CO;2, 2003. a
Krueger, S. K., Morrison, H., and Fridlind, A. M.: Cloud-resolving modeling: ARM and the GCSS story, Meteor. Mon., 57, 25.1–25.16, https://doi.org/10.1175/AMSMONOGRAPHS-D-15-0047.1, 2016. a
Kurowski, M. J., Suselj, K., Grabowski, W. W., and Teixeira, J.: Shallow-to-deep transition of continental moist convection: Cold pools, surface fluxes, and mesoscale organization, J. Atmos. Sci., 75, 4071–4090, https://doi.org/10.1175/JAS-D-18-0031.1, 2018. a
Lac, C., Chaboureau, J.-P., Masson, V., Pinty, J.-P., Tulet, P., Escobar, J., Leriche, M., Barthe, C., Aouizerats, B., Augros, C., Aumond, P., Auguste, F., Bechtold, P., Berthet, S., Bielli, S., Bosseur, F., Caumont, O., Cohard, J.-M., Colin, J., Couvreux, F., Cuxart, J., Delautier, G., Dauhut, T., Ducrocq, V., Filippi, J.-B., Gazen, D., Geoffroy, O., Gheusi, F., Honnert, R., Lafore, J.-P., Lebeaupin Brossier, C., Libois, Q., Lunet, T., Mari, C., Maric, T., Mascart, P., Mogé, M., Molinié, G., Nuissier, O., Pantillon, F., Peyrillé, P., Pergaud, J., Perraud, E., Pianezze, J., Redelsperger, J.-L., Ricard, D., Richard, E., Riette, S., Rodier, Q., Schoetter, R., Seyfried, L., Stein, J., Suhre, K., Taufour, M., Thouron, O., Turner, S., Verrelle, A., Vié, B., Visentin, F., Vionnet, V., and Wautelet, P.: Overview of the Meso-NH model version 5.4 and its applications, Geosci. Model Dev., 11, 1929–1969, https://doi.org/10.5194/gmd-11-1929-2018, 2018. a
Lafore, J.-P. and Moncrieff, M. W.: A numerical investigation of the organization and interaction of the convective and stratiform regions of tropical squall lines, J. Atmos. Sci., 46, 521–544, https://doi.org/10.1175/1520-0469(1989)046<0521:ANIOTO>2.0.CO;2, 1989. a
Legay, A., Deremble, B., and Burchard, H.: Derivation and implementation of a non-local term to improve the oceanic convection representation within the k–ϵ parameterization, J. Adv. Model. Earth Sy., 17, e2024MS004243, https://doi.org/10.1029/2024MS004243, 2025. a
Lochbihler, K., Lenderink, G., and Siebesma, A. P.: Cold pool dynamics shape the response of extreme rainfall events to climate change, J. Adv. Model. Earth Sy., 13, e2020MS002306, https://doi.org/10.1029/2020MS002306, 2021. a
Lothon, M., Campistron, B., Chong, M., Couvreux, F., Guichard, F., Rio, C., and Williams, E.: Life cycle of a mesoscale circular gust front observed by a C-band Doppler radar in West Africa, Mon. Weather Rev., 139, 1370–1388, https://doi.org/10.1175/2010MWR3480.1, 2011. a, b
Ma, H.-Y., Chuang, C. C., Klein, S. A., Lo, M.-H., Zhang, Y., Xie, S., Zheng, X., Ma, P.-L., Zhang, Y., and Phillips, T. J.: An improved hindcast approach for evaluation and diagnosis of physical processes in global climate models, J. Adv. Model. Earth Sy., 7, 1810–1827, https://doi.org/10.1002/2015MS000490, 2015. a
Meyer, B. and Haerter, J. O.: Mechanical forcing of convection by cold pools: Collisions and energy scaling, J. Adv. Model. Earth Sy., 12, e2020MS002 281, https://doi.org/10.1029/2020MS002281, 2020. a, b
Pantillon, F., Knippertz, P., Marsham, J. H., and Birch, C. E.: A parameterization of convective dust storms for models with mass-flux convection schemes, J. Atmos. Sci., 72, 2545–2561, https://doi.org/10.1175/JAS-D-14-0341.1, 2015. a, b
Park, S.: A unified convection scheme (UNICON). Part I: Formulation, J. Atmos. Sci., 71, 3902–3930, https://doi.org/10.1175/JAS-D-13-0233.1, 2014. a, b, c
Park, S., Song, C., Kim, S., and Kim, J.: Parameterization of the elevated convection with a unified convection scheme (UNICON) and its impacts on the diurnal cycle of precipitation, J. Adv. Model. Earth Sy., 16, e2023MS003651, https://doi.org/10.1029/2023MS003651, 2024. a
Piriou, J.-M., Redelsperger, J.-L., Geleyn, J.-F., Lafore, J.-P., and Guichard, F.: An approach for convective parameterization with memory: Separating microphysics and transport in grid-scale equations, J. Atmos. Sci., 64, 4127–4139, https://doi.org/10.1175/2007JAS2144.1, 2007. a, b
Provod, M., Marsham, J. H., Parker, D. J., and Birch, C. E.: A characterization of cold pools in the West African Sahel, Mon. Weather Rev., 144, 1923–1934, https://doi.org/10.1175/MWR-D-15-0023.1, 2016. a
Qian, L., Young, G. S., and Frank, W. M.: A convective wake parameterization scheme for use in general circulation models, Mon. Weather Rev., 126, 456–469, https://doi.org/10.1175/1520-0493(1998)126<0456:ACWPSF>2.0.CO;2, 1998. a
Randall, D., Khairoutdinov, M., Arakawa, A., and Grabowski, W.: Breaking the cloud parameterization deadlock, B. Am. Meteorol. Soc., 84, 1547–1564, https://doi.org/10.1175/BAMS-84-11-1547, 2003. a, b
Redelsperger, J.-L., Diedhiou, A., Flamant, C., Janicot, S., Lafore, J.-P., Lebel, T., Polcher, J., Bourlès, B., Caniaux, G., de Rosnay, P., Desbois, M., Eymard, L., Fontaine, B., Geneau, I., Ginoux, K., Hoepffner, M., Kane, C., Law, K., Mari, C., Marticorena, B., Mougin, E., Pelon, J., Peugeot, C., Protat, A., Roux, F., Sultan, B., and Van Den Akker, E.: Amma, une étude multidisciplinaire de la mousson ouest-africaine, La Météorologie, 54, 22–32, https://doi.org/10.4267/2042/20098, 2006. a
Rio, C. and Hourdin, F.: A thermal plume model for the convective boundary layer: Representation of cumulus clouds, J. Atmos. Sci., 65, 407–425, https://doi.org/10.1175/2007JAS2256.1, 2008. a, b
Rio, C., Grandpeix, J.-Y., Hourdin, F., Guichard, F., Couvreux, F., Lafore, J.-P., Fridlind, A., Mrowiec, A., Bony, S., Rochetin, N., Roehrig, R., Idelkadi, A., Lefebvre, M.-P., and Musat, I.: Control of deep convection by sub-cloud lifting processes: the ALP closure in the LMDZ5B general circulation model, Clim. Dynam., 40, 2271–2292, https://doi.org/10.1007/s00382-012-1506-x, 2013. a
Rochetin, N., Grandpeix, J.-Y., Rio, C., and Couvreux, F.: Deep convection triggering by boundary layer thermals. Part II: Stochastic triggering parameterization for the LMDZ GCM, J. Atmos. Sci., 71, 515–538, https://doi.org/10.1175/JAS-D-12-0337.1, 2014. a, b
Rochetin, N., Hohenegger, C., Touzé-Peiffer, L., and Villefranque, N.: A physically based definition of convectively generated density currents: Detection and characterization in convection-permitting simulations, J. Adv. Model. Earth Sy., 13, e2020MS002402, https://doi.org/10.1029/2020MS002402, 2021. a, b
Rotunno, R., Klemp, J. B., and Weisman, M. L.: A theory for strong, long-lived squall lines, J. Atmos. Sci., 45, 463–485, https://doi.org/10.1175/1520-0469(1988)045<0463:ATFSLL>2.0.CO;2, 1988. a
Siebesma, A. P., Bretherton, C. S., Brown, A., Chlond, A., Cuxart, J., Duynkerke, P. G., Jiang, H., Khairoutdinov, M., Lewellen, D., Moeng, C.-H., Sanchez, E., Stevens, B., and Stevens, D. E.: A large eddy simulation intercomparison study of shallow cumulus convection, J. Atmos. Sci., 60, 1201–1219, https://doi.org/10.1175/1520-0469(2003)60<1201:ALESIS>2.0.CO;2, 2003. a, b
Stephens, G. L., L'Ecuyer, T., Forbes, R., Gettelmen, A., Golaz, J.-C., Bodas-Salcedo, A., Suzuki, K., Gabriel, P., and Haynes, J.: Dreary state of precipitation in global models, J. Geophys. Res.-Atmos., 115, D24211, https://doi.org/10.1029/2010JD014532, 2010. a
Strauss, C., Ricard, D., Lac, C., and Verrelle, A.: Evaluation of turbulence parametrizations in convective clouds and their environment based on a large-eddy simulation, Q. J. Roy. Meteor. Soc., 145, 3195–3217, https://doi.org/10.1002/qj.3605, 2019. a
Tan, J., Oreopoulos, L., Jakob, C., and Jin, D.: Evaluating rainfall errors in global climate models through cloud regimes, Clim. Dynam., 50, 3301–3314, https://doi.org/10.1007/s00382-017-3806-7, 2018. a
Thiam, M. L., Hourdin, F., Grandpeix, J.-Y., Rio, C., and Coulon-Decorzens, M.: Data and scripts used in the study: Evaluation and improvement of the cold pool parameterization in the LMDZ climate model against Large Eddy Simulations, Zenodo [data set], https://doi.org/10.5281/zenodo.20548562, 2026. a
Torri, G. and Kuang, Z.: On cold pool collisions in tropical boundary layers, Geophys. Res. Lett., 46, 399–407, https://doi.org/10.1029/2018GL080501, 2019. a
Touzé-Peiffer, L., Vogel, R., and Rochetin, N.: Cold pools observed during eurec 4 a: Detection and characterization from atmospheric soundings, J. Appl. Meteorol. Clim., 61, 593–610, https://doi.org/10.1175/JAMC-D-21-0048.1, 2022. a
Vogel, R., Konow, H., Schulz, H., and Zuidema, P.: A climatology of trade-wind cumulus cold pools and their link to mesoscale cloud organization, Atmos. Chem. Phys., 21, 16609–16630, https://doi.org/10.5194/acp-21-16609-2021, 2021. a
Weisman, M. L. and Rotunno, R.: “A theory for strong long-lived squall lines” revisited, J. Atmos. Sci., 61, 361–382, https://doi.org/10.1175/1520-0469(2004)061<0361:ATFSLS>2.0.CO;2, 2004. a
Williamson, D., Goldstein, M., Allison, L., Blaker, A., Challenor, P., Jackson, L., and Yamazaki, K.: History matching for exploring and reducing climate model parameter space using observations and a large perturbed physics ensemble, Clim. Dynam., 41, 1703–1729, https://doi.org/10.1007/s00382-013-1896-4, 2013. a
Wing, A. A., Reed, K. A., Satoh, M., Stevens, B., Bony, S., and Ohno, T.: Radiative–convective equilibrium model intercomparison project, Geosci. Model Dev., 11, 793–813, https://doi.org/10.5194/gmd-11-793-2018, 2018. a
Yamada, T.: Simulations of Nocturnal Drainage Flows by a q2l Turbulence Closure Model, J. Atmos. Sci., 40, 91–106, https://doi.org/10.1175/1520-0469(1983)040<0091:SONDFB>2.0.CO;2, 1983. a
Yanai, M., Esbensen, S., and Chu, J.-H.: Determination of bulk properties of tropical cloud clusters from large-scale heat and moisture budgets, J. Atmos. Sci., 30, 611–627, https://doi.org/10.1175/1520-0469(1973)030<0611:DOBPOT>2.0.CO;2, 1973. a
Young, G. S., Perugini, S. M., and Fairall, C. W.: Convective wakes in the equatorial western Pacific during TOGA, Mon. Weather Rev., 123, 110–123, https://doi.org/10.1175/1520-0493(1995)123<0110:CWITEW>2.0.CO;2, 1995. a
Zhang, M., Somerville, R. C. J., and Xie, S.: The SCM concept and creation of ARM forcing datasets, Meteor. Mon., 57, 24.1–24.12, https://doi.org/10.1175/AMSMONOGRAPHS-D-15-0040.1, 2016. a
Zuidema, P., Torri, G., Muller, C., and Chandra, A.: A survey of precipitation-induced atmospheric cold pools over oceans and their interactions with the larger-scale environment, Surv. Geophys., 38, 1283–1305, https://doi.org/10.1007/s10712-017-9447-x, 2017. a
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.
Explicit simulations (LES) of cold pools formed by the re-evaporation of convective rainfall are...
Altmetrics
Final-revised paper
Preprint