This is the second lecture given at Potenza. The topic Salvatore Manfreda (GS) gave me is about how to move from one scale to another in Hydrological Modeling. I started from distribute modelling. My point there is that, for some tasks, distributed modelling can be scaled up to millions of square kilometers, and so, upscaling theory is, in principle, not necessary.
But clearly this is a provocative statement I made just for pushing away some misconceptions.