It is important to show that the warming and anomalies are uneven, because in the north (specially over the northern polar circle) a few positive feedback loops

It is important to show that the warming and anomalies are uneven, because in the north (specially over the northern polar circle) a few positive feedback loops happen, like permafrost thawing that emits CO2 and methane that were frozen there for very long time. I'm not sure that that reinforcement of the trends were taken into account in old models, or how much it can accelerate things over old predictions that may still be used to dictate policies.