Figure 1: SST shows decreasing contrast between the Indian Ocean and Atlantic.
From: Atlantic multi-decadal oscillation covaries with Agulhas leakage

(a) Time-mean observed SST (1965–2000; colour) and SSH (1993–2013; contoured, in cm). (b) Linear SST trend (1965–2000; colour) and SSH s.d. (contoured, in cm). The green line in a shows the section used for the Lagrangian Agulhas leakage calculation.