It is essentially impossible to get to 8C warming by end of century on mainstream climate science and it is not motivated in this paper that one could get there (it mentions a reference for tipping points, Mac Kay et al, also discussed on the forum), but this reference and the general review literature on tipping points does not really support a +4-6C increase over short time due to tipping points.
It is essentially impossible to get to 8C warming by end of century on mainstream climate science and it is not motivated in this paper that one could get there (it mentions a reference for tipping points, Mac Kay et al, also discussed on the forum), but this reference and the general review literature on tipping points does not really support a +4-6C increase over short time due to tipping points.
Thanks for commenting, Johannes!
For reference, I think Johannes is referring to the discussion here.