@article{fdi:010050509,
  title = {{D}iagnosing the annual cycle of the equatorial undercurrent in the {A}tlantic {O}cean from a general circulation model},
  author = {{A}rhan, {M}. and {T}reguier, {A}.{M}. and {B}ourl{\`e}s, {B}ernard and {M}ichel, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}en-year-long output series from a general circulation model forced by daily realistic winds are used to analyze the annual cycle of the {E}quatorial {U}ndercurrent ({EUC}) in the {A}tlantic {O}cean. {T}wo well-defined transport maxima are found: {O}ne, present during boreal summer and autumn in the central part of the basin, is generally recognized and regarded as a near-equilibrium response to the equatorial easterly trades that culminate in this period. {A}nother one, most pronounced near the western boundary, occurs in {A}pril {M}ay when the trades relax. {T}his second maximum is less patent in the observations, but concomitant signals in previously published analyses of the {N}orth {B}razil {C}urrent and surface velocity seasonal variations might be indirect manifestations of its reality. {B}ecause this intensification appears at periods when the boundary between the tropical and equatorial gyres nears the equator, the authors relate its existence to wind stress curl variations at subequatorial latitudes. {A} link between the interannual variability of the spring transport maximum and that of the low-latitude wind stress curl is, indeed, found in the model. {T}his diagnostic approach suggests that two different dynamical regimes shape up the {EUC} seasonal cycle: in summer and autumn, local forcing by the equatorial zonal wind component and main supply from the ocean interior; in winter and spring, remote forcing by the low-latitude rotational wind component and supply from the western boundary currents.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {P}hysical {O}ceanography},
  volume = {36},
  numero = {8},
  pages = {1502--1522},
  ISSN = {0022-3670},
  year = {2006},
  DOI = {10.1175/{JPO}2929.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010050509},
}