An Enhanced Version of the SC EXCELL Model Considering Cells Movement

This paper presents an enhanced version of the SC EXCELL model (stratiform convective exponential CELL model) that predicts attenuation through a rain cellular representation of the meteorological environment and computes separately the contributions from stratiform and convective rain. The new feature added to the model is the possibility to translate the synthetic cells in such a way as to reproduce in statistical terms the expected time evolution of rain. This capability has been used for two opposite situations: to simulate a time diversity system and to produce rain rate statistics with 1-hour integration time with quite satisfying results. The general relationship that links the cell velocities in the two situations for any location of interest is presented.