B. A. Steinman, L. M. Frankcombe, M. E. Mann, S. K. Miller, and M. H. England
Science (11 December 2015)
Kravtsov et al. claim that we incorrectly assess the statistical independence of simulated samples of internal climate variability and that we underestimate uncertainty in our calculations of observed internal variability. Their analysis is fundamentally flawed, owing to the use of model ensembles with too few realizations and the fact that no one model can adequately represent the forced signal.