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. 2015 Nov 26;6:8895. doi: 10.1038/ncomms9895

Figure 1. Effect of the equatorial Atlantic westerly wind perturbations on Atlantic Niño variability in fully coupled models.

Figure 1

(a) Correlation between the {u}' averaged over the western equatorial Atlantic Ocean (2°N–2°S, 10°W–40°W) during March-April-May (MAM) and {SST}' averaged over 3°N–3°S, 5°W–15°W during June-July-August (JJA), following the approach of ref. 17. The {u}' at 925-hPa was analysed for models (CCSM3, CSIRO-Mk3.0 and ECHAM5/MPI-OM) for which the surface winds were not available from the Coupled Models Intercomparison Project, phase 3 archive. Red dots denote statistical significance at P≤0.001. Horizontal black line denote mean observational results17. (b) Standard deviations of the Atlantic Niño SST index (σ{SST}') in JJA. Horizontal black line denote observational data sets estimates. In each panel, the abscissa shows the model names.