Interactive comment on “Emulating IPCC AR4 atmosphere-ocean and carbon cycle models for projecting global-mean, hemispheric and land/ocean temperatures: MAGICC 6.0” by M. Meinshausen et al

There are, however, three major revisions that we have implemented: a) We followed the recommendation of reviewer 3, and split up the paper into two, a “model description and calibration” paper (Part I) and an “application” paper (Part II). b) We have updated the application examples. We noted previously the potential future use of MAGICC for forthcoming intercomparison exercises. MAGICC has indeed been used to assist in the design of the RCP pathways that will be the basis for model simulations under CMIP5. We have therefore included the use of MAGICC in the RCP process as one additional application example in Part II. c) We have now included a section (Section 6.2 in Part I) on possible alternative explanations for increases in the effective climate sensitivity over time – following the suggestion of reviewer 2.