Articles | Volume 26, issue 12
https://doi.org/10.5194/acp-26-8617-2026
https://doi.org/10.5194/acp-26-8617-2026
Research article
 | 
22 Jun 2026
Research article |  | 22 Jun 2026

Evaluating turbulent and microphysical schemes in ICON for deep convection over the Alps: a case study of vertical transport and model–observation comparison

Hemanth Kumar Alladi, Julian Quimbayo-Duarte, Luca Bugliaro, Johanna Mayer, Shweta Singh, and Juerg Schmidli

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Cited articles

Aligo, E. A., Gallus, W. A., and Segal, M.: On the impact of WRF model vertical grid resolution on Midwest summer rainfall forecasts, Weather Forecast., 24, 575–594, https://doi.org/10.1175/2008WAF2007101.1, 2009. a
Alladi, H. K., Quimbayo-Duarte, J., Bugliaro, L., Mayer, J., Singh, S., and Schmidli, J.: ICON Deep Convection over the Alps: Dataset for Vertical Transport and Model–Observation Analysis of Turbulence and Microphysics Parameterizations, Zenodo [data set], https://doi.org/10.5281/zenodo.20386087, 2026. a
Auguste, F. and Chaboureau, J.-P.: Deep Convection as Inferred From the C2OMODO Concept of a Tandem of Microwave Radiometers, Front. Remote Sens., 3, 852610, https://doi.org/10.3389/frsen.2022.852610, 2022. a
Barthlott, C., Corsmeier, U., Meißner, C., Braun, F., and Kottmeier, C.: The influence of mesoscale circulation systems on triggering convective cells over complex terrain, Atmos. Res., 81, 150–175, https://doi.org/10.1016/j.atmosres.2005.11.010, 2006. a
Bašták Ďurán, I., Sakradzija, M., and Schmidli, J.: The Two-Energies Turbulence Scheme Coupled to the Assumed PDF Method, J. Adv. Model. Earth Sy., 14, e2021MS002922, https://doi.org/10.1029/2021MS002922, 2022. a
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Thunderstorms can transport moisture into the lower stratosphere, affecting climate. Over mountains, models fail to represent them due to underrepresentation of turbulent mixing and cloud microphysics. This study evaluates the operational and new turbulence schemes, with single and double moment microphysics, in the ICOsahedral Nonhydrostatic (ICON) model against observations. The operational turbulence scheme enhances mixing, while double moment produces taller storms with more ice transport.
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