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dc.contributor.authorWu, Jia
dc.contributor.authorFan, Hanjie
dc.contributor.authorLin, Shuheng
dc.contributor.authorZhong, Wenxiu
dc.contributor.authorHe, Shan
dc.contributor.authorKeenlyside, Noel Sebastian
dc.contributor.authorYang, Song
dc.date.accessioned2024-12-13T13:21:07Z
dc.date.available2024-12-13T13:21:07Z
dc.date.created2024-01-17T08:37:20Z
dc.date.issued2024
dc.identifier.issn2397-3722
dc.identifier.urihttps://hdl.handle.net/11250/3169689
dc.description.abstractThe Indian Ocean Basin (IOB) mode is believed to favor the decay of El Niño via modulating the zonal wind anomalies in the western equatorial Pacific, while the contribution of the Indian Ocean Dipole (IOD) mode to the following year’s El Niño remains highly controversial. In this study, we use the evolution of fast and slow decaying El Niño events during 1950–2020 to demonstrate that the positive IOD with a strong western pole prompts the termination of El Niño, whereas a weak western pole has no significant effect. The strong western pole of a positive IOD leads to a strong IOB pattern peaking in the late winter (earlier than normal), enhancing local convection and causing anomalous rising motions over the tropical Indian Ocean and sinking motions over the western tropical Pacific. The surface equatorial easterly wind anomalies on the western flank of the sinking motions stimulate oceanic equatorial upwelling Kelvin waves, which shoal the thermocline in the eastern equatorial Pacific and rapidly terminate the equatorial warming during El Niño. However, a weak western pole of the IOD induces a weak IOB mode that peaks in the late spring, and the above-mentioned cross-basin physical processes do not occur.en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleBoosting effect of strong western pole of the Indian Ocean Dipole on the decay of El Niño eventsen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2024 the authorsen_US
dc.source.articlenumber6en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.doi10.1038/s41612-023-00554-5
dc.identifier.cristin2228233
dc.source.journalnpj Climate and Atmospheric Scienceen_US
dc.relation.projectNorges forskningsråd: 328935en_US
dc.relation.projectNorges forskningsråd: 316618en_US
dc.relation.projectTrond Mohn stiftelse: BFS2018TMT01en_US
dc.identifier.citationnpj Climate and Atmospheric Science. 2024, 7, 6.en_US
dc.source.volume7en_US


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal