@article{fdi:010075550,
  title = {{P}ropagation of subseasonal equatorially-forced coastal trapped waves down to the {B}enguela upwelling system},
  author = {{I}llig, {S}erena and {B}achelery, {M}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he oceanic connection between the coastal variability along the southwestern {A}frican coasts and the linear equatorial dynamics at subseasonal time-scales (<120 days) is examined using a variety of model outputs, ranging from linear to general circulation models. {W}e focus on the equatorially-forced fast and weakly dissipative first-mode coastal trapped waves which are shown to propagate down to the southern tip of {A}frica. {I}n the eastern equatorial {A}tlantic, the first-mode equatorial forcing is tangled with the higher-order {K}elvin wave modes and is overshadowed by the dominant second baroclinic mode. {T}he latter is slower and peaks 10 days after the concealed first-mode contribution. {W}ithin this time frame, the remotely-forced first-mode coastal trapped waves impinge on the variability of the {B}enguela upwelling ecosystem, almost in phase with the subseasonal sea level fluctuations in the {G}ulf of {G}uinea. {O}ver 1993-2008, the equatorial forcing undergoes a substantial interannual modulation. {P}eriods of energetic first-mode equatorial {K}elvin waves coincide with a strong subseasonal coastal wind activity that breaks the stronger equatorial connection. {T}his suggests the existence of a large-scale atmospheric connection between the equatorial wave forcing and the along-shore winds in the {B}enguela, modulating the maximum latitude at which the equatorial dynamics impacts the local marine resources.},
  keywords = {{ATLANTIQUE} ; {BENGUELA} {COURANT}},
  booktitle = {},
  journal = {{S}cientific {R}eports - {N}ature},
  volume = {9},
  numero = {},
  pages = {art. 5306 [10 ]},
  ISSN = {2045-2322},
  year = {2019},
  DOI = {10.1038/s41598-019-41847-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010075550},
}