Extended Data Figure 4: Surface velocity anomaly when the sea-level index is positive.
From: Ocean impact on decadal Atlantic climate variability revealed by sea-level observations
a, Magnitude (m sâ1) and b, zonally integrated meridional velocity anomalies (103 m2 sâ1) for the time period 1993 to 2011, corresponding to when (c) the sea-level index is positive. A positive sea-level index is associated with a more northerly circulation in the intergyre region and increased surface flow into the subpolar gyre. Velocities are geostrophic surface velocities derived from satellite altimetry.
