The parameterization of vertical transport due to cumu-lus clouds is often performed by a massflux approach (Tiedtke, 1989). In such schemes it is assumed that the cumulus cloud field can be well represented by a top-hat

A parameterization of shallow cumulus clouds for use in atmospheric general circulation models is proposed. The parameterization uses a bulk representation of an ensemble of transient clouds. Entrainment of environmental air occurs at the ascending top of the cumulus cloud and also at the lateral

The vertical transport by shallow nonprecipitating cumulus clouds of conserved variables, such as the total specific humidity or the liquid water potential temperature, can be well modeled by the mass-flux approach, in which the cloud field is represented by a top-hat distribution of clouds and its

Abstract. This paper is the first in a two-part series in which the life cycles of numerically simulated shallow cumulus clouds are systematically examined. The life cycle data for six clouds with a range of cloud-top heights are isolated from an equilibrium trade cumulus field generated by a large

with the traveled distance. The magnitude of these growth rates shows that evaporative cooling, in its most idealized form, is capable of producing a fast-growing shell with numbers that are consistent with observations of the subsiding shell around real shallow cumulus clouds: for typical thermodynamic conditions

Abstract not found

Aerosol and gas re-distribution by shallow cumulus clouds: An investigation using airborne measurements

Aerosol and gas re-distribution by shallow cumulus clouds: An investigation using airborne measurements

Shallow cumulus cloud fields are inhomogeneous and broken in structure, and the individual clouds are irreg-ular over a wide range of scales. This complicates the parameterization of the radiative and transport effects

The aim of this study is to study shallow cumulus clouds evolving through their entire life cycle using Large Eddy Simulations. Although LES is an enriching tool to study the physics of the cloudy boundary layer, its com-