2009/02/01 by Erik van Sebille, Arne Biastoch, Peter Jan van Leeuwen +1 · 1 citation
Earth and Planetary Sciences · Environmental Science · #Oceanographic and Atmospheric Processes #Marine and coastal ecosystems #Climate variability and models
paper · doi:10.1029/2008gl036614
openalex publication_date 2009/02/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
Time series of transports in the Agulhas region have been constructed by simulating Lagrangian drifter trajectories in a 1/10 degree two‐way nested ocean model. Using these 34 year long time series it is shown that smaller (larger) Agulhas Current transport leads to larger (smaller) Indian‐Atlantic inter‐ocean exchange. When transport is low, the Agulhas Current detaches farther downstream from the African continental slope. Moreover, the lower inertia suppresses generation of anti‐cyclonic vorticity. These two effects cause the Agulhas retroflection to move westward and enhance Agulhas leakage. In the model a 1 Sv decrease in Agulhas Current transport at 32°S results in a 0.7 ± 0.2 Sv increase in Agulhas leakage.