I would like to ask, about any sugeestions for modeling using the troposhere into stratified layers of permitivity (epsilon). In fact, I tried to extract values of epsilon form the J-P modified refractivity profile and draw the layers (1 m the thickness of each layer) however, the variation values of epsilon is too small to have an effect on the signal propagation direction deviation. Any suggestion for troposheric environment modeling using stratified layers and what are the dimensions of layers in question? Any document or books to recommend ?

Thank you so much.