The sensitivity of convective aggregation to diabatic processes in idealized radiative‐convective equilibrium simulations

The sensitivity of convective aggregation to diabatic processes in idealized radiativeconvective equilibrium simulations

Idealized explicit convection simulations of the Met Office Unified Model exhibit spontaneous selfaggregation in radiative-convective equilibrium, as seen in other models in previous studies. This selfaggregation is linked to feedbacks between radiation, surface fluxes, and convection, and the organization is intimately related to the evolution of the column water vapor field. Analysis of the b...

Sensitivity of Radiative–Convective Equilibrium Simulations to Horizontal Resolution

This paper investigates the impacts of horizontal resolution on the statistical behavior of convection. An idealized radiative–convective equilibrium is simulated for model resolutions ranging between 2 and 50 km. The simulations are compared based upon the analysis of the mean state, the energy and water vapor transport, and the probability distribution functions for various quantities. It is ...

Idealized simulations of pyro-convective clouds

Convective aggregation in realistic convective-scale simulations

To investigate the real-world relevance of idealized-model convective self-aggregation, five 15 day cases of real organized convection in the tropics are simulated. These include multiple simulations of each case to test sensitivities of the convective organization and mean states to interactive radiation, interactive surface fluxes, and evaporation of rain. These simulations are compared to se...

Non-robustness of convective organization in idealized mesoscale model simulations

In a prior study, Su, Bretherton, and Chen used the Penn State/National Center for Atmospheric Research Mesoscale Model (MM5) to study the organization of deep convection in a nonrotating atmosphere over a horizontally uniform tropical ocean, with periodic boundary conditions and an imposed mean lifting. They found that convection could “self-aggregate” from small-scale initial noise into a lar...