I read parts of it, then I wondered where they published and noticed they created their own peer review journal to publish it. This means probably the scientific community rejected it.
Thus, it probably means that their results are skewed.

I'm not a climate scientists neither am I investing significant amount of time in becoming one (Actually I'm getting a P.h.D in computer science) so it is easy to write a paper where you come to a different conclusion. It is difficult to write such a paper with enough evidence to convince the current scientific community.