Another quote from the APS Climate Change Statement Review:
IPCC suggests that the stasis can be attributed in part to “internal variability.” Yet climate models imply that a 15-year stasis is very rare (von Storch et al., 2013, available at http://www.academia.edu/4210419/Can_climate_models_explain_the_recent_stagnation_in_global_warming ) and models cannot reproduce the observed GMST even with the observed radiative forcing [See figure immediately below from the AR5 WG1 report].