@article{fdi:010062384, title = {{D}ecoupling of the {A}gulhas leakage from the {A}gulhas {C}urrent}, author = {{L}oveday, {B}. {R}. and {D}urgadoo, {J}. {V}. and {R}eason, {C}. {J}. {C}. and {B}iastoch, {A}. and {P}enven, {P}ierrick}, editor = {}, language = {{ENG}}, abstract = {{T}he relationship between the {A}gulhas {C}urrent and the {A}gulhas leakage is not well understood. {H}ere, this is investigated using two basin-scale and two global ocean models of incrementally increasing resolution. {T}he response of the {A}gulhas {C}urrent is evaluated under a series of sensitivity experiments, in which idealized anomalies, designed to geometrically modulate zonal trade wind stress, are applied across the {I}ndian {O}cean {B}asin. {T}he imposed wind stress changes exceed plus or minus two standard deviations from the annual-mean trade winds and, in the case of intensification, are partially representative of recently observed trends. {T}he {A}gulhas leakage is quantified using complimentary techniques based on {L}agrangian virtual floats and {E}ulerian passive tracer flux. {A}s resolution increases, model behavior converges and the sensitivity of the leakage to {A}gulhas {C}urrent transport anomalies is reduced. {I}n the two eddy-resolving configurations tested, the leakage is insensitive to changes in {A}gulhas {C}urrent transport at 328{S}, though substantial eddy kinetic energy anomalies are evident. {C}onsistent with observations, the position of the retroflection remains stable. {T}he decoupling of {A}gulhas {C}urrent variability from the {A}gulhas leakage suggests that while correlations between the two may exist, they may not have a clear dynamical basis. {I}t is suggested that present and future {A}gulhas leakage proxies should be considered in the context of potentially transient forcing regimes.}, keywords = {{OCEAN} {INDIEN} ; {ATLANTIQUE} {SUD}}, booktitle = {}, journal = {{J}ournal of {P}hysical {O}ceanography}, volume = {44}, numero = {7}, pages = {1776--1797}, ISSN = {0022-3670}, year = {2014}, DOI = {10.1175/jpo-d-13-093.1}, URL = {https://www.documentation.ird.fr/hor/fdi:010062384}, }