There is evidence from observations that evaporation of precipitation falling from widespread thick masses of middle-and high-cloud cumulonimbus debris is of vital importance to the dynamics of some tropical disturbances. A numerical model suitable for testing this idea has been designed and run. Dynamics of the large-scale flow are governed by the hydrostatic unfiltered equations specialized t...

Abstract. Marine low-cloud mesoscale morphology in the southeastern Pacific Ocean is analyzed using a large dataset of classifications spanning 3 years generated by machine learning methods. Meteorological variables and cloud properties are composited type classification, showing distinct meteorological regimes marine organization from tropics to midlatitudes. The presentation cellular convecti...

A perturbation of relative humidity is used as a trigger to start the convection in a two-dimensional numerical model of a cumulus cloud. The effects of varying the width and depth of the perturbation are studied. The rate of growth; eventual cloud height, liquid water content, and updraft strength are strongly dependent on depth of the impulse; but for realistically shallow depths, these value...

Some representative rl~ult!; from test runs of the LA~I model are illu5tral~:d in Irigures 1-3. The vertically averaged conldensclt'ion rate is depicted in Figure 1. Other phase: chan,~es, involving evaporation, mel:ting, freezing, depo!;ition (fl'om vapor to ice), and sublimation, are also calculated by the LAN model, as are conversion rates bet~'een clloud water (suspended particles) and snow...