Far-north ground stations give excellent communications coverage for polar-orbiting satellites, but they also have the benefit of low peak rainfall similar to the southwest continental United States. Consider a ground station being constructed on the southern coast of Greenland. Using the information, tables, figures, and equations in the charts and the book, find the specific attenuateon ya for an 8GHz signal and a 20GHz signal, assuming both are vertically polarized. Why is the 20GHz signal attenuated more (i.e., explain the conceptual physical meaning of the changes in constants k and a)