The uncertainty of the ensemble mean is generally similar when computed with an historical ensemble and the corresponding piControl experiment.
This remains true for other epoch lengths: 45, 60, 75, 90-year epochs
and other variables:
Net Surface Heat flux: 30, 45, 60, 75, 90-year epochs
NHF regressed on SST: 30, 45, 60, 75, 90-year epochs
PR: 30, 45, 60, 75, 90-year epochs
Sea Surface Height: 30, 45, 60, 75, 90-year epochs
SST: 30, 45, 60, 75, 90-year epochs
Taux: 30, 45, 60, 75, 90-year epochs
Taux regressed on SST: 30, 45, 60, 75, 90-year epochs
Tauy: 30, 45, 60, 75, 90-year epochs
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project: CMIP6
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experiments: piControl, historical
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epoch length: 30-year
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regions: Niño4 (5N-5S, 160E-150W), Niño3.4 (5N-5S, 120-170W), Niño3 (5N-5S, 90-150W)
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variable: SST regressed on SSH (seasonal cycle removed)
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statistics: correlation, slope
Computed using equation (9) from Planton et al. (preprint)
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