Fig. 4: Changes in the distribution of zonal and meridional SASG flows. | Communications Earth & Environment

Fig. 4: Changes in the distribution of zonal and meridional SASG flows.

From: Projected Atlantic overturning slow-down is to be compensated by a strengthened South Atlantic subtropical gyre

Fig. 4

a Spatial pattern of the leading EOF (94.9% of total variance) of zonal velocity anomalies along 1920–2100 within the upper 985-m of the South Atlantic subtropical gyre (delimited by the 1920–2100 mean zero zonal velocity line — black filled contour). Trends were not removed from the data prior to performing the EOF. b Corresponding dimensionless amplitude, or Principal Component (PC), time series (blue) and its linear trend along 1920–2100 (red dashed line). c 1920–2100 mean, upper 985-m, meridional velocities along the SA western boundary, showing the north-south distribution of the WBCs, for reference. d Hovmoller diagram of anomalous meridional velocities averaged over the western boundary layer (within a 6∘-longitude band off the South American coast), corresponding to the meridional extension in c.

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