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RISLagrangian Droplet Dynamics in the Subsiding Shell of a Cloud Using Direct Numerical Simulations
Publisher: American Meteorological Society
Abstract: his study investigates the droplet dynamics at the lateral cloud?environment interface in shallow cumulus clouds. A mixing layer is used to study a small part of the cloud edge using direct numerical simulation combined ...
Predictability of Dry Convective Boundary Layers: An LES Study
Publisher: American Meteorological Society
Abstract: he predictability horizon of convective boundary layers is investigated in this study. Large-eddy simulation (LES) and direct numerical simulation (DNS) techniques are employed to probe the evolution of perturbations in ...
Simple Solutions to Steady-State Cumulus Regimes in the Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: modeling framework is developed that extends the mixed-layer model to steady-state cumulus convection. The aim is to consider the simplest model that retains the essential behavior of cumulus-capped layers. The presented ...
Turbulent Winds and Temperature Fronts in Large-Eddy Simulations of the Stable Atmospheric Boundary Layer
Publisher: American Meteorological Society
Abstract: he nighttime high-latitude stably stratified atmospheric boundary layer (SBL) is computationally simulated using high?Reynolds number large-eddy simulation on meshes varying from 2003 to 10243 over 9 physical hours for ...
Weather Forecasting Using GPU-Based Large-Eddy Simulations
Publisher: American Meteorological Society
Abstract: ince the advent of computers midway through the twentieth century, computational resources have increased exponentially. It is likely they will continue to do so, especially when accounting for recent trends in multicore ...
Stochastic Parameterization of Convective Area Fractions with a Multicloud Model Inferred from Observational Data
Publisher: American Meteorological Society
Abstract: bservational data of rainfall from a rain radar in Darwin, Australia, are combined with data defining the large-scale dynamic and thermodynamic state of the atmosphere around Darwin to develop a multicloud model based on ...
Stochastic Convection Parameterization with Markov Chains in an Intermediate-Complexity GCM
Publisher: American Meteorological Society
Abstract: onditional Markov chain (CMC) models have proven to be promising building blocks for stochastic convection parameterizations. In this paper, it is demonstrated how two different CMC models can be used as mass flux closures ...
A Year-Long Large-Eddy Simulation of the Weather over Cabauw: An Overview
Publisher: American Meteorological Society
Abstract: esults are presented of two large-eddy simulation (LES) runs of the entire year 2012 centered at the Cabauw observational supersite in the Netherlands. The LES is coupled to a regional weather model that provides the ...
A Businger Mechanism for Intermittent Bursting in the Stable Boundary Layer
Publisher: American Meteorological Society
Abstract: High-resolution large-eddy simulations of the Antarctic very stable boundary layer reveal a mechanism for systematic and periodic intermittent bursting. A nonbursting state with a boundary layer height of just 3 m is ...