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Weakening Atlantic Niño–Pacific connection under greenhouse warming

Sea surface temperature variability in the equatorial eastern Atlantic, which is referred to as an Atlantic Niño (Niña) at its warm (cold) phase and peaks in boreal summer, dominates the interannual variability in the equatorial Atlantic. By strengthening of the Walker circulation, an Atlantic Niño...

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Autores principales: Jia, Fan, Cai, Wenju, Wu, Lixin, Gan, Bolan, Wang, Guojian, Kucharski, Fred, Chang, Ping, Keenlyside, Noel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6703873/
https://www.ncbi.nlm.nih.gov/pubmed/31457105
http://dx.doi.org/10.1126/sciadv.aax4111
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author Jia, Fan
Cai, Wenju
Wu, Lixin
Gan, Bolan
Wang, Guojian
Kucharski, Fred
Chang, Ping
Keenlyside, Noel
author_facet Jia, Fan
Cai, Wenju
Wu, Lixin
Gan, Bolan
Wang, Guojian
Kucharski, Fred
Chang, Ping
Keenlyside, Noel
author_sort Jia, Fan
collection PubMed
description Sea surface temperature variability in the equatorial eastern Atlantic, which is referred to as an Atlantic Niño (Niña) at its warm (cold) phase and peaks in boreal summer, dominates the interannual variability in the equatorial Atlantic. By strengthening of the Walker circulation, an Atlantic Niño favors a Pacific La Niña, which matures in boreal winter, providing a precursory memory for El Niño–Southern Oscillation (ENSO) predictability. How this Atlantic impact responds to greenhouse warming is unclear. Here, we show that greenhouse warming leads to a weakened influence from the Atlantic Niño/Niña on the Pacific ENSO. In response to anomalous equatorial Atlantic heating, ascending over the equatorial Atlantic is weaker due to an increased tropospheric stability in the mean climate, resulting in a weaker impact on the Pacific Ocean. Thus, as greenhouse warming continues, Pacific ENSO is projected to be less affected by the Atlantic Niño/Niña and more challenging to predict.
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spelling pubmed-67038732019-08-27 Weakening Atlantic Niño–Pacific connection under greenhouse warming Jia, Fan Cai, Wenju Wu, Lixin Gan, Bolan Wang, Guojian Kucharski, Fred Chang, Ping Keenlyside, Noel Sci Adv Research Articles Sea surface temperature variability in the equatorial eastern Atlantic, which is referred to as an Atlantic Niño (Niña) at its warm (cold) phase and peaks in boreal summer, dominates the interannual variability in the equatorial Atlantic. By strengthening of the Walker circulation, an Atlantic Niño favors a Pacific La Niña, which matures in boreal winter, providing a precursory memory for El Niño–Southern Oscillation (ENSO) predictability. How this Atlantic impact responds to greenhouse warming is unclear. Here, we show that greenhouse warming leads to a weakened influence from the Atlantic Niño/Niña on the Pacific ENSO. In response to anomalous equatorial Atlantic heating, ascending over the equatorial Atlantic is weaker due to an increased tropospheric stability in the mean climate, resulting in a weaker impact on the Pacific Ocean. Thus, as greenhouse warming continues, Pacific ENSO is projected to be less affected by the Atlantic Niño/Niña and more challenging to predict. American Association for the Advancement of Science 2019-08-21 /pmc/articles/PMC6703873/ /pubmed/31457105 http://dx.doi.org/10.1126/sciadv.aax4111 Text en Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Jia, Fan
Cai, Wenju
Wu, Lixin
Gan, Bolan
Wang, Guojian
Kucharski, Fred
Chang, Ping
Keenlyside, Noel
Weakening Atlantic Niño–Pacific connection under greenhouse warming
title Weakening Atlantic Niño–Pacific connection under greenhouse warming
title_full Weakening Atlantic Niño–Pacific connection under greenhouse warming
title_fullStr Weakening Atlantic Niño–Pacific connection under greenhouse warming
title_full_unstemmed Weakening Atlantic Niño–Pacific connection under greenhouse warming
title_short Weakening Atlantic Niño–Pacific connection under greenhouse warming
title_sort weakening atlantic niño–pacific connection under greenhouse warming
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6703873/
https://www.ncbi.nlm.nih.gov/pubmed/31457105
http://dx.doi.org/10.1126/sciadv.aax4111
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