Fig. 5: Decadal trends in Agulhas leakage (AL) are largely decoupled from changes in the Agulhas Current (AC) and mainly represent a changing fraction of AC waters entering the South Atlantic (AL/AC).
From: Robust estimates for the decadal evolution of Agulhas leakage from the 1960s to the 2010s
a Decadal mean AL vs AL/AC as simulated in SIMJRA (blue) and SIMCORE (black) (ALLA from Fig. 2a and AL/AC from panel c of this figure); decadal means for all possible averaging periods between 1958 and 2005 (overlapping simulation period SIMCORE and SIMJRA) are displayed by semi-transparent dots, decadal means for subsequent periods D1 (1965–1984) to D4 (1995–2004) are marked by solid connected dots. Simulated annual (thin lines) and sub-decadally filtered (thick lines, 11 yr Hamming window) (b) AC and (c) AL/AC timeseries. d, e Moving centered 21 yr linear trends for timeseries in panels b and c of this figure (dots mark values that are significant according to student’s t-test and 95% confidence level).
