\label{fig:tsClimDif} a) Annual mean SST climatology of the CMIP5 AMIP runs (contours) and its change from the AMIP to the multimodel mean of the historical runs (colors); b) Multimodel mean annual mean SST climatology of the CMIP5 historical runs (contours) and its change from the historical to RCP8.5 runs (colors, the 30$^{\circ}$S--30$^{\circ}$N tropical mean change has been removed to emphasize the spatial pattern of the non-uniform component). The models used to calculate the multimodel mean are the 38 models from the CMIP5 that have surface temperature available in both the historical and RCP8.5 runs (The description of these models are from: \protect\url{http://kage.ldeo.columbia.edu:81/expert/SOURCES/.LDEO/.ClimateGroup/.PROJECTS/.IPCC/.CMIP5/.MultiModelMeans/.MMM-v2/.dataset_documentation.html}). The climatology is estimated based on the period of 1979--2005 for the AMIP and historical runs,  and 2070--2099 for the RCP8.5 runs. The  units are $^{\circ}$C.