The warming is also consistent with climate sensitivities estimated from warming events in the historical past, and in the paleo record. (skepticalscience.com)
A combination of circumstances makes model - based sensitivity estimates of distant times and different climates hard to do, but at least we are getting a good education about it. (realclimate.org)
These two dominate the total uncertainty; reduce them by a factor of three, and empirical sensitivity estimates will be good enough that public consensus become far more likely. (judithcurry.com)