2024
DOI: 10.1029/2023ms004151
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Numerical Diffusion and Turbulent Mixing in Convective Self‐Aggregation

L. Silvestri,
M. Saraceni,
P. Bongioannini Cerlini

Abstract: Convective Self‐Aggregation (CSA) is a common feature of idealized numerical simulations of the tropical atmosphere in Radiative‐Convective Equilibrium (RCE). However, at coarse grid resolution where deep convection is not fully resolved, the occurrence of this phenomenon is extremely sensitive to subgrid‐scale processes. This study examines the role of mixing and entrainment, provided by the turbulence model and the implicit numerical diffusion. The study compares the results of two models, WRF and SAM, by va… Show more

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