Computation of radiowave attenuation in the atmosphere

I'm a 38 years old and study at the high school (Business and Management).
In my free time I'm trying to teach myself Arabic. I've been twicethere and look forward to go there anytime soon. I like to read, preferably on my beloved Kindle. I really love to watch The Big Bang Theory and The Simpsons as well as docus about nature. I love Fishing.