Wind speed is an important meteorological parameter, whose simulation influenced by various physical process parameterizations. However, the impact of cumulus parameterization schemes (CPSs) on wind at climate scale has not been sufficiently investigated in previous studies. Using Advanced Research version Weather and Forecasting model (ARWv3) hydrostatic change equation, we assessed effects fo...

Climatically important low-level clouds are commonly misrepresented in climate models. The FAst-physics System TEstbed and Research (FASTER) Project has constructed case studies from the Atmospheric Radiation Measurement Climate Research Facility’s Southern Great Plain site during the RACORO aircraft campaign to facilitate research on model representation of boundary-layer clouds. This paper fo...

Fast-moving squall lines observed in the tropical oceans are treated as a gravity wave generated by the latent heat release associated with deep cumulus convection. A simple two-dimensional diagnostic linear gravity wave model forced by a zonally propagating heat source is presented. The effect of cumulus friction, or momentum exchange due to cumulus convection, is included in the wave momentum...

Parameterizations of cumulus convection for use in large scale numerical models of the atmosphere are classified according to whether they are based on an energy equilibrium principle or on a balance between the supply of mass or moisture and its consumption by convection. Though some of the most popular cumulus parameterizations are based on mass or moisture balance, I argue that energy balanc...

24 25 Tropical intraseasonal variability is examined in version 3 of the Geophysical Fluid Dynamics 26 Laboratory Atmosphere Model (AM3). Compared to its predecessor AM2, AM3 uses a new treatment 27 of deep and shallow cumulus convection and mesoscale clouds. The AM3 cumulus parameterization is 28 a mass flux-based scheme but also, unlike that in AM2, incorporates subgrid-scale vertical velocit...

mixed layer is a part of the atmospheric boundary layer in which pollutants are uniformly distributed. it is sensitive to the earth’s surface, controls the flow of heat and momentum between the surface and the free atmosphere, thus playing a key role in atmospheric circulation. most of atmospheric pollution models require the height of the mixed layer as an input to determine the depth of atmos...

[1] This study investigates the ability of a droplet activation parameterization (which considers the effects of entrainment and mixing) to reproduce observed cloud droplet number concentration (CDNC) in ambient clouds. Predictions of the parameterization are compared against cloud averages of CDNC from ambient cumulus and stratocumulus clouds sampled during CRYSTAL‐FACE (Key West, Florida, Jul...