A NUMERICAL MODEL FOR HILLY-LAND GLOBAL RADIATION

Based on the simulations of the hilly-land topographic parameters,i.e.,average orientation and slope,and topographic screen angle,a theoretical model is detailed to greater extent for global radiation over hilly countries in terms of the experimental data.Three main aspects are examined:the model construction;numerical run with the model parameters;discussion of simulations obtained locally in the model run for the southern Dabie Mountains.Results show that the significant effect of the topography on global radiation.The present model applies in principle to the numerical simulation of global radiation for any form of topography of various regions.