A guest post by Nicholas Lewis  In a paper published last year (Lewis & Curry 2014), discussed here, Judith Curry and I derived best estimates for equilibrium/effective climate sensitivity (ECS) and transient climate response (TCR). At 1.64°C, our estimate for ECS was below all those exhibited by CMIP5 global climate models, and at 1.33°C for … Continue reading The implications for climate sensitivity of Bjorn Stevens’ new aerosol forcing paper