A guest post by Nicholas Lewis Introduction A new paper in Nature by Jochem Marotzke and Piers Forster: ‘Forcing, feedback and internal variability in global temperature trends’[i] investigates the causes of the mismatch between climate models that simulate a strong increase in global temperature since 1998 and observations that show little increase, and the influence … Continue reading Marotzke and Forster’s circular attribution of CMIP5 intermodel warming differences