Hycell, a new model of the rain horizontal distribution: application for propagation studies

The aim of this paper is to describe a new model, called Hycell, able to generate rain cells at small scale and rain fields at mid scale. The major limitation of this model comes from its difficulty to optimally reproduce the rain rate distribution in the case of rain cells. which exhibit high rain rates on non negligible areas; this occurs for rain constituting tropical rains, monsoon rains or even summer storms in mean latitudes for example. In these cases, the fit forcing equation on the average rain rate leads to overestimate the peak rain rate of the cell.