Abstract: A numerical model for the study of three-dimensional, small-scale, horizontally homogeneous turbulence is presented for use with a two-dimensional grid in a vertical plane. The model is called pseudo three-dimensional ...

Abstract: Convection between horizontal plates maintained at two different temperatures is studied numerically for a Rayleigh number of 6.75?105 and a Prandtl number of 0.71. The two-dimensional and Boussinesq approximations are ...

Abstract: Observations in the lower atmosphere and of laboratory convection which demonstrate the existence of upward heat flux, w???? > 0, with vanishing or counter potential temperature gradient, ???/?z ≥ 0, are reviewed. Data of ...

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Abstract: The criterion for instability of dry air mixing into a cloud top is determined both graphically and mathematically. It is found to be identical to the buoyancy-flux instability criterion of Randall (1976) based on stratocumulus ...

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Abstract: A review is presented on laboratory modeling of diffusion downwind of a continuous point source within a boundary layer of well defined height with turbulence driven by buoyant convection. Results of using mixed-layer ...

Abstract: Anomalously large values of the Reynolds stress (downstream component) obtained from measurements analysed by Angell are explained as being associated with changes in velocity at the top of a deepening planetary boundary ...

Abstract: Results of numerical integrations are presented for a neutrally stratified planetary boundary layer containing a passive scalar, and for three unstable cases with upward heat flux. The air is assumed unsaturated. A total ...