Menkès Christophe auteur aut IRD Lengaigne Matthieu auteur aut IRD Vialard Jérôme auteur aut IRD Puy M. auteur aut IRD Marchesiello Patrick auteur aut IRD Cravatte Sophie auteur aut IRD Cambon Gildas auteur aut IRD text journalArticle eng text/pdf born digital access Similarities between early 1997 and 2014 has prompted climate scientists to wonder if an El Nino matching the 1997 "El Nino of the century" could develop in 2014. Until April 2014, the equatorial Pacific exhibited positive heat content anomalies along with an eastward warm pool displacement similar to those found during the onset of strong El Nino events. Yet in July 2014, the warm pool had retreated back to its climatological positions and equatorial temperature anomalies were much weaker than in mid-1997. Dedicated oceanic simulations reveal that these weak interannual anomalies can be attributed to differences in Westerly Wind Event (WWE) sequences. In contrast with 1997, the lack of WWEs from April to June significantly limited the growth of eastern Pacific anomalies and the eastward warm pool displacement in 2014. With the absence of additional WWE activity, prospects for a mature El Nino in late 2014 are fading. specialized PACIFIQUE ZONE EQUATORIALE 032 41 18 6476-6483 2014 0094-8276 https://www.documentation.ird.fr/hor/fdi:010062718 10.1002/2014gl061186 0094-8276 [F B010062718] https://www.documentation.ird.fr/hor/fdi:010062718 https://www.documentation.ird.fr/intranet/publi/2014/12/010062718.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2015-01-12 2021-04-07 fdi:010062718 fre