by John Abraham, "Climate Consensus - The 97%," The Guardian, March 11, 2014
But, the term sensitivity has to be used carefully because it can mean different things in different contexts. For instance, there is a long-term (equilibrium) sensitivity to doubling carbon dioxide which refers to the ultimate temperature reached by the planet if we were to double carbon dioxide. There are also shorter term (transient) sensitivities which relate to temperature changes as heat trapping gases increase at some specified rate.
"I wish we could take some solace from the slowdown in the rate of warming, but all the evidence now agrees that future warming is likely to be towards the high end of our estimates so it's more clear than ever that we need large, rapid emissions reductions to avoid the worst damages from climate change."