Dear WAsP developers and users, as far as I know WAsP can handle(or creates) up to 10 roughness changes in one sector. Based on map data or digital orthophoto I create (CLC06 data)and adjust roughness lines. With the help of high resoluted images I can align the roughness lines quite precisely and I can capture landscape elements which has not been recognized in CLC06 data before, tiny parts of settlements, Forrest clearing ... Is it worth it to chart roughness lines that accurately, with regard of yield calculation? Does WAsP take that slight differences due to roughness distribution significantly into account? Exist a kind of map scale for working with WAsP, which advises for the aspect of roughness that a kind of map resolution (changing within a distance of x m is not considered?) Mange tak, thanks! surftrial
