@article{fdi:010061255,
  title = {{A}gulhas leakage predominantly responds to the southern hemisphere westerlies},
  author = {{D}urgadoo, {J}. {V}. and {L}oveday, {B}. {R}. and {R}eason, {C}. {J}. {C}. and {P}enven, {P}ierrick and {B}iastoch, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {A}gulhas {C}urrent plays a crucial role in the thermohaline circulation through its leakage into the {S}outh {A}tlantic {O}cean. {U}nder both past and present climates, the trade winds and westerlies could have the ability to modulate the amount of {I}ndian-{A}tlantic inflow. {C}ompelling arguments have been put forward suggesting that trade winds alone have little impact on the magnitude of {A}gulhas leakage. {H}ere, employing three ocean models for robust analysisa global coarse-resolution, a regional eddy-permitting, and a nested high-resolution eddy-resolving configurationand systematically altering the position and intensity of the westerly wind belt in a series of sensitivity experiments, it is shown that the westerlies, in particular their intensity, control the leakage. {L}eakage responds proportionally to the intensity of westerlies up to a certain point. {B}eyond this, through the adjustment of the large-scale circulation, energetic interactions occur between the {A}gulhas {R}eturn {C}urrent and the {A}ntarctic {C}ircumpolar {C}urrent that result in a state where leakage no longer increases. {T}his adjustment takes place within one or two decades. {C}ontrary to previous assertions, these results further show that an equatorward (poleward) shift in westerlies increases (decreases) leakage. {T}his occurs because of the redistribution of momentum input by the winds. {I}t is concluded that the reported present-day leakage increase could therefore reflect an unadjusted oceanic response mainly to the strengthening westerlies over the last few decades.},
  keywords = {{B}oundary currents ; {M}eridional overturning circulation ; {W}ind stress ; {M}esoscale models ; {N}umerical analysis modeling ; {ATLANTIQUE} {SUD}},
  booktitle = {},
  journal = {{J}ournal of {P}hysical {O}ceanography},
  volume = {43},
  numero = {10},
  pages = {2113--2131},
  ISSN = {0022-3670},
  year = {2013},
  DOI = {10.1175/jpo-d-13-047.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061255},
}