This factors in some feedback loops which most sudies to date have ignored. Note, that it excludes extra warming caused by all the additional water vapour in the air.
For context, studies suggest that the largest extinction event in Earth’s history (so far), the Late Permian Extinction Event, saw temperature rises of around 8°C.
Link this paper calling for revolution the next time people say scientists aren’t raising the alarm.
Hell yeah! I saw that Peter Carter blatantly called for it in one of his recent videos. Straight up sad “revolution “!