@article{fdi:010049689,
  title = {{C}ontrasting the termination of moderate and extreme {E}l {N}ino events in coupled general circulation models},
  author = {{L}engaigne, {M}atthieu and {V}ecchi, {G}. {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}s in the observed record, the termination of {E}l {N}ino in the coupled {IPCC}-{AR}4 climate models involves meridional processes tied to the seasonal cycle. {T}hese meridional processes both precondition the termination of {E}l {N}ino events in general and lead to a peculiar termination of extreme {E}l {N}ino events (such as those of 1982-83 and 1997-98), in which the eastern equatorial {P}acific warm sea surface temperature anomalies ({SSTA}) persist well into boreal spring/early-summer. {T}he mechanisms controlling the peculiar termination of extreme {E}l {N}ino events, which involves to the development of an equatorially centred intertropical convergence zone, are consistent across the four models that exhibit extreme {E}l {N}inos and observational record, suggesting that this peculiar termination represents a general feature of extreme {E}l {N}inos. {F}urther, due to their unusual termination, extreme {E}l {N}inos exhibit an apparent eastward propagation of their {SSTA}, which can strongly influence estimates of the apparent propagation of {ENSO} over multi-decadal periods. {I}nterpreting these propagation changes as evidence of changes in the underlying dynamical feedbacks behind {E}l {N}ino could therefore be misleading, given the strong influence of a single extreme event.},
  keywords = {{E}l {N}ino/{S}outhern {O}scillation ({ENSO}) ; {E}xtreme events ; {IPCC}-{AR}4 climate ; models ; {C}oupled ocean-atmosphere mechanisms ; {V}alidation},
  booktitle = {},
  journal = {{C}limate {D}ynamics},
  volume = {35},
  numero = {2-3},
  pages = {299--313},
  ISSN = {0930-7575},
  year = {2010},
  DOI = {10.1007/s00382-009-0562-3},
  URL = {https://www.documentation.ird.fr/hor/fdi:010049689},
}