Sensitivity & feedbacks

Does a new paper really reconcile instrumental and model-based climate sensitivity estimates?

by Nic Lewis
A new paper in Science Advances by Cristian Proistosescu and Peter Huybers (hereafter PH17) claims that accounting for the decline in feedback strength over time that occurs in most CMIP5 coupled global climate models (GCMs), brings observationally-based climate sensitivity estimates from historical records into line with model-derived estimates.