“…For reference, we also show the amplitude of the QBO from Experiment 1 of QBOi (Bushell et al, ; Butchart et al, ). Thirteen models carried out this experiment (60LCAM5, AGCM3‐CMAM, CESM1 (WACCM5‐110L), ECHAM5sh, EMAC, HadGEM2‐A, HadGEM2‐AC, LMDz6, MIROC‐AGCM‐LL, MIROC‐ESM, MRI‐ESM2, UMGA7, and UMGA7gws), which consisted of a simulation with observed prescribed sea surface temperatures (SSTs) and sea ice as well as external forcings for the period between January 1979 and February 2009.…”