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  A decadally delayed response of the tropical Pacific to Atlantic multidecadal variability

Zanchettin, D., Bothe, O., Graf, H. F., Omrani, N.-E., Rubino, A., & Jungclaus, J. H. (2016). A decadally delayed response of the tropical Pacific to Atlantic multidecadal variability. Geophysical Research Letters, 43, 784-792. doi:10.1002/2015GL067284.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0028-5538-B Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-E874-5
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 Urheber:
Zanchettin, Davide1, Autor           
Bothe, Oliver2, Autor           
Graf, Hans F., Autor           
Omrani, Nour-Eddine, Autor
Rubino, Angelo, Autor
Jungclaus, Johann H.1, 3, Autor           
Affiliations:
1Director’s Research Group OES, The Ocean in the Earth System, MPI for Meteorology, Max Planck Society, ou_913553              
2Ocean Statistics, The Ocean in the Earth System, MPI for Meteorology, Max Planck Society, Bundesstraße 53, 20146 Hamburg, DE, ou_913558              
3A 3 - Climate Sensitivity and Sea Level, Research Area A: Climate Dynamics and Variability, The CliSAP Cluster of Excellence, External Organizations, Bundesstraße 53, 20146 Hamburg, DE, ou_1863480              

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 Zusammenfassung: North Atlantic sea surface temperature anomalies are known to affect tropical Pacific climate variability and El Niño–Southern Oscillation (ENSO) through thermocline adjustment in the equatorial Pacific Ocean. Here coupled climate simulations featuring repeated idealized cycles of the Atlantic Multidecadal Oscillation (AMO) generated by nudging its tropical branch demonstrate that the tropical Pacific response to the AMO also entails a substantial decadally delayed component. The simulations robustly show multidecadal fluctuations in central equatorial Pacific sea surface temperatures lagging the AMO by about three decades and a subdecadal cold-to-warm transition of the tropical Pacific mean state during the AMO's cooling phase. The interplay between out-of-phase responses of seawater temperature and salinity in the western Pacific and associated density anomalies in local thermocline waters emerge as crucial factors of remotely driven multidecadal variations of the equatorial Pacific climate. The delayed AMO influences on tropical Pacific dynamics could help understanding past and future ENSO variability.

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Sprache(n): eng - English
 Datum: 2015-122016-012016-01-282016-01-30
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1002/2015GL067284
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Projektname : PREFACE MiKlip
Grant ID : 603521
Förderprogramm : Funding Programme 7 (FP7)
Förderorganisation : European Commission (EC)

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Titel: Geophysical Research Letters
  Kurztitel : GRL
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, D.C. : American Geophysical Union
Seiten: - Band / Heft: 43 Artikelnummer: - Start- / Endseite: 784 - 792 Identifikator: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217