Extended Data Fig. 5: As forcing intensifies, the role of forcing in the PDO grows larger.
From: Human emissions drive recent trends in North Pacific climate variations
a,b, External forcing explains more PDO variance after 1950 on both (a) interannual and (b) multidecadal timescales. Please note we only plot bars where model output allows; not all models were initialized in or before 1870 (see Extended Data Table 1). Also, the number of simulations in each single-model ensemble varies (listed below model name and in Extended Data Table 1) implying that these bars may not be directly comparable to each other, especially for those models with fewer simulations. Please note that the “all models” value varies slightly from the text because we calculate the first principal component of North Pacific SST earlier than 1950 in those models that allow. The black dots correspond to the empirical 90% confidence level, as calculated via phase re-shuffling (Methods).
