@article{fdi:010085185,
  title = {{M}esoscale eddy kinetic energy budgets and transfers between vertical modes in the {A}gulhas {C}urrent},
  author = {{T}edesco, {P}. and {G}ula, {J}. and {P}enven, {P}ierrick and {M}enesguen, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}estern boundary currents are hotspots of mesoscale variability and eddy-topography interactions, which channel energy toward smaller scales and eventually down to dissipation. {H}ere, we assess the main mesoscale eddies energy sinks in the {A}gulhas {C}urrent region from a regional numerical simulation. {W}e derive an eddy kinetic energy ( {EKE} over bar ) budget in the framework of the vertical modes. {I}t accounts for energy transfers between energy reservoirs and vertical modes, including transfers channeled by topography. {T}he variability is dominated by mesoscale eddies (barotropic and first baroclinic modes) in the path of intense mean currents. {E}ddy-topography interactions result in a major mesoscale eddy energy sink, along three different energy routes, with comparable importance: transfers toward bottom-intensified time-mean currents, generation of higher baroclinic modes, and bottom friction. {T}he generation of higher baroclinic modes takes different forms in the {N}orthern {A}gulhas {C}urrent, where it corresponds to nonlinear transfers to smaller vertical eddies on the slope, and in the {S}outhern {A}gulhas {C}urrent, where it is dominated by a (linear) generation of internal gravity waves over topography. {A}way from the shelf, mesoscale eddies gain energy by an inverse vertical turbulent cascade. {H}owever, the {A}gulhas {C}urrent region remains a net source of mesoscale eddy energy due to the strong generation of eddies, modulated by the topography, especially in the {S}outhern {A}gulhas {C}urrent. {I}t shows that the local generation of mesoscale eddies dominates the net {EKE} over bar budget, contrary to the paradigm of mesoscale eddies decay upon western boundaries.},
  keywords = {{B}oundary currents ; {E}ddies ; {E}nergy budget balance ; {I}nternal waves ; {K}inetic energy ; {M}esoscale processes ; {R}egional models ; {OCEAN} {INDIEN} ; {AIGUILLES} {COURANT}},
  booktitle = {},
  journal = {{J}ournal of {P}hysical {O}ceanography},
  volume = {52},
  numero = {4},
  pages = {677--704},
  ISSN = {0022-3670},
  year = {2022},
  DOI = {10.1175/jpo-d-21-0110.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085185},
}