@article{fdi:010070983,
  title = {{V}ertical energy flux at {ENSO} time scales in the subthermocline of the {S}outheastern {P}acific},
  author = {{V}ergara, {O}. and {D}ewitte, {B}oris and {R}amos, {M}. and {P}izarro, {O}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he question of how energy is redistributed in the ocean has renewed the interest for the processes leading to midlatitude subthermocline variability at low frequency. {H}ere we investigate a process that has been disregarded although potentially relevant for climatic studies dealing with the planetary energy budget. {T}he focus is on the {S}outheastern {P}acific where an efficient oceanic teleconnection takes place, linking the remote surface equatorial momentum forcing with the subthermocline through the vertical propagation of low-frequency long-wavelength extratropical {R}ossby waves ({ETRW}). {A} high-resolution model is used to document the vertical energy flux associated with {ETRW} at interannual to decadal time scales. {T}he analysis of a long-term (1958-2008) simulation reveals that the vertical energy flux can be interpreted to a large extent as resulting from the coastally forced {ETRW} as far south as 35 degrees {S}, so that heat content variability can be predicted along theoretical trajectories originating from the coast below the thermocline. {I}t is shown that the vertical energy flux associated with the {E}l {N}ino {S}outhern {O}scillation forms beams below the thermocline that account for a large fraction of the total vertical energy flux at interannual time scales. {E}xtreme {E}l {N}ino events are the dominant contributor to this flux, which is hardly impacted by mesoscale activity. {T}he energy beams experience a dissipation processes in the ocean below 1000 m that is interpreted as resulting from vertical turbulent diffusion. {O}ur results suggest that the {ETRW} at {ENSO} time scales are strongly dissipated at the surface but still can modulate the heat content in the deep ocean of the {S}outheastern {P}acific.},
  keywords = {{PACIFIQUE} {SUD} {EST}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {O}ceans},
  volume = {122},
  numero = {7},
  pages = {6011--6038},
  ISSN = {2169-9275},
  year = {2017},
  DOI = {10.1002/2016jc012614},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070983},
}