Mixing‐length controls on high‐resolution simulations of convective storms

By K. Hanley, R. Plant, T. Stein, Robin J. Hogan, J. Nicol, H. Lean, Carol Halliwell, Peter A. Clark. 2013

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Large‐eddy simulations over Germany using ICON: a comprehensive evaluation (2017, background): “Some groups have even started realistic, weather-forecast mode simulations and evaluated these with observational data (Caine et al., 2013; Hanley et al., 2015; Stein et al., 2015).”
Convection‐permitting models: a step‐change in rainfall forecasting (2016, methodology): “However, there is evidence that even at 100 m grid length there are issues with the representation of convection that are probably related to partially resolving turbulence (Hanley et al., 2015).”
Organization of tropical convection in low vertical wind shears: Role of updraft entrainment (2017, background): “…have examined the impact of the choice of subgrid-scale horizontal mixing scheme on realistic situations, and concluded that 3D turbulence schemes that represented greater lateral mixing resulted in more cores with lower updraft velocities [Machado and Chaboureau, 2015; Hanley et al., 2015].”
Evaluation of the convection‐resolving climate modeling approach on continental scales (2017, methodology): “…SIMULATION 5251 can be reduced to a certain degree by carefully calibrating the turbulent-mixing lengths used in turbulence closure models [Baldauf et al., 2011], there seems to be a trade-off between correctly representing small convective cells and larger storms [Hanley et al., 2015].”