Fig. 1: Uncertainty in the attribution of observed SST trends over the tropical Pacific.

a Annual-mean SST trends (units: K decade−1) over the period 1979–2023 computed from ERSST5 with stippling indicating statistical significance of the computed trends at the 95% confidence level. b Same as in a but for HadISST. c Same as in a but over the period 1950–2023. d Same as in b but over the period 1950–2023.