I had seen the IPCC 6th report webpage mentioned above, but it's like giving a link to an online library full of ads when I'm pretty wanting to read some concrete document like this one:
http://robert-ibatullin.narod.ru/utilities/astro_formulas.pdf
where I can take numbers from a table, put them into a formula, and get the value to clearly see, how can it be that
1. Tens meters were not so disastrous as several centimeters.
2. Tens meters happened without human efforts, while all human industry can add just centimeters.
Maybe it's just a periodical natural process, and we live on the raising hillside of a sine wave.
Or a non-periodic natural one, but still invariant to human activities.
I believe, the climate models are not more complicated than the astronomical ones.
(Just because they are a part of them).