Evaluating stratiform cloud base charge remotely

Autoconversion rate bias in stratiform boundary layer cloud parameterizations

Because of their large grid-box size, global climate models do not explicitly represent small-scale processes occurring in cloud systems in the marine boundary layer. One such process, which is thought to have an important climatological effect, is the production of warm rain. Parameterizations of this process typically partition the liquid water into a cloud and a rain component. The rate of c...

Daytime Low Stratiform Cloud Detection on AVHRR Imagery

The near-real time retrieval of low stratiform cloud (LSC) coverage is of vital interest for such disciplines as meteorology, transport safety, economy and air quality. Within this scope, a novel methodology is proposed which provides the LSC occurrence probability estimates for a satellite scene. The algorithm is suited for the 1 × 1 km Advanced Very High Resolution Radiometer (AVHRR) data and...

Stratiform cloud electrification: comparison of theory with multiple in-cloud measurements

Stratiform clouds constitute ∼40% of global cloud cover and play a key role in determining the planetary radiation budget. Electrification remains one of the least understood effects on their microphysical processes. Droplet charging at the top and bottom edges of stratiform clouds arises from vertical current flow through clouds driven by the Global atmospheric Electric Circuit. In-cloud charg...

Eucalyptus Cloud to Remotely Provision e-Governance Applications

Single-Column Modeling A Stratiform Cloud Parameterization for General Circulation Models

Figure 1 summarizes the various cloud variables and their interactions. Precipitating cloud species are distinguished from non-precipitating species, and the liquid phase is distinguished from the ice phase. The size of the nonprecipitating cloud particles (which influences both the cloud radiative properties and the conversion of nonprecipitating cloud species to precipitating species) is dete...