@article{fdi:010063939,
  title = {{P}rocesses driving intraseasonal displacements of the eastern edge of the warm pool : the contribution of westerly wind events},
  author = {{D}rushka, {K}. and {B}ellenger, {H}. and {G}uilyardi, {E}. and {L}engaigne, {M}atthieu and {V}ialard, {J}{\'e}r{\^o}me and {M}adec, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e investigate the processes responsible for the intraseasonal displacements of the eastern edge of the western {P}acific warm pool ({WPEE}), which appear to play a role in the onset and development of {E}l {N}ino events. {W}e use 25 years of output from an ocean general circulation model experiment that is able to accurately capture the observed displacements of the {WPEE}, sea level anomalies, and upper ocean zonal currents at intraseasonal time scales in the western and central {P}acific {O}cean. {O}ur results confirm that {WPEE} displacements driven by westerly wind events ({WWE}s) are largely controlled by zonal advection. {T}his paper has also two novel findings: first, the zonal current anomalies responsible for the {WPEE} advection are driven primarily by local wind stress anomalies and not by intraseasonal wind-forced {K}elvin waves as has been shown in most previous studies. {S}econd, we find that intraseasonal {WPEE} fluctuations that are not related to {WWE}s are generally caused by intraseasonal variations in net heat flux, in contrast to interannual {WPEE} displacements that are largely driven by zonal advection. {T}his study hence raises an interesting question: can surface heat flux-induced zonal {WPEE} motions contribute to {E}l {N}ino-{S}outhern {O}scillation evolution, as {WWE}s have been shown to be able to do?.},
  keywords = {{W}esterly wind events ; {W}estern {P}acific warm pool ; {A}ir-sea interaction ; {E}l {N}ino ; {I}ntraseasonal variability ; {PACIFIQUE} {OUEST}},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {44},
  numero = {3-4},
  pages = {735--755},
  ISSN = {0930-7575},
  year = {2015},
  DOI = {10.1007/s00382-014-2297-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010063939},
}