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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 4 | Geoscience Letters

Fig. 4

From: Local and remote SST variability contribute to the westward shift of the Pacific Walker circulation during 1979–2015

Fig. 4

The simulated trends of the PWC over the tropical Pacific in atmospheric model experiments. a Shows the simulated climatology (contours) and the trend (color) of the mass stream function of the PWC in the pan-tropical-ocean forcing atmospheric model experiments, with df showing the simulated PWC trends in the tropical Atlantic-, the tropical Pacific-, and the Indian Ocean-forcing experiments. The gray dots cover the areas with confidence level of 95%. b Shows the additive effect of the three simulations as shown in df, which is very similar to the model results driven by the pan-tropical oceans (a), implying the linearity between the SST forcings from different tropical ocean basins. c Quantifies the trends of the PWC in each of the four atmospheric model experiments, with black bars showing the amplitude of the trend and the error bars indicating the 95% confidence intervals. gi Quantify the westward shifts of the west edge (c), the center (d), and the east edge (e) of the PWC in these atmospheric model simulations

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