Is the decadal variability in the tropical Atlantic a precursor to the NAO?
In the past two decades climate research in the tropical Atlantic with respect to the inter-hemispheric gradient of sea surface temperature (SST) emphasized the predominance of decadal-scale variability. Our results show that this mode of variability is prevalent only for part of the last 130-years...
Published in: | Annales Geophysicae |
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Online Access: | https://doi.org/10.5194/angeo-26-4075-2008 https://angeo.copernicus.org/articles/26/4075/2008/ |
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ftcopernicus:oai:publications.copernicus.org:angeo36632 2023-05-15T17:31:44+02:00 Is the decadal variability in the tropical Atlantic a precursor to the NAO? Wainer, I. Servain, J. Clauzet, G. 2018-09-27 application/pdf https://doi.org/10.5194/angeo-26-4075-2008 https://angeo.copernicus.org/articles/26/4075/2008/ eng eng doi:10.5194/angeo-26-4075-2008 https://angeo.copernicus.org/articles/26/4075/2008/ eISSN: 1432-0576 Text 2018 ftcopernicus https://doi.org/10.5194/angeo-26-4075-2008 2020-07-20T16:26:45Z In the past two decades climate research in the tropical Atlantic with respect to the inter-hemispheric gradient of sea surface temperature (SST) emphasized the predominance of decadal-scale variability. Our results show that this mode of variability is prevalent only for part of the last 130-years record (the 1880s, the 1920s and, especially, the 1970s). There is a lag of a few months between the decadal variations of the inter-hemispheric gradient of SST and the decadal variability of the North Atlantic Oscillation (NAO). This seems to indicate that the 10-year variability first develops in the tropics and then propagates polewards. The inter-hemispheric gradient of SST mode should be thought as episodic and not as a periodic oscillation. Text North Atlantic North Atlantic oscillation Copernicus Publications: E-Journals Annales Geophysicae 26 12 4075 4080 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
In the past two decades climate research in the tropical Atlantic with respect to the inter-hemispheric gradient of sea surface temperature (SST) emphasized the predominance of decadal-scale variability. Our results show that this mode of variability is prevalent only for part of the last 130-years record (the 1880s, the 1920s and, especially, the 1970s). There is a lag of a few months between the decadal variations of the inter-hemispheric gradient of SST and the decadal variability of the North Atlantic Oscillation (NAO). This seems to indicate that the 10-year variability first develops in the tropics and then propagates polewards. The inter-hemispheric gradient of SST mode should be thought as episodic and not as a periodic oscillation. |
format |
Text |
author |
Wainer, I. Servain, J. Clauzet, G. |
spellingShingle |
Wainer, I. Servain, J. Clauzet, G. Is the decadal variability in the tropical Atlantic a precursor to the NAO? |
author_facet |
Wainer, I. Servain, J. Clauzet, G. |
author_sort |
Wainer, I. |
title |
Is the decadal variability in the tropical Atlantic a precursor to the NAO? |
title_short |
Is the decadal variability in the tropical Atlantic a precursor to the NAO? |
title_full |
Is the decadal variability in the tropical Atlantic a precursor to the NAO? |
title_fullStr |
Is the decadal variability in the tropical Atlantic a precursor to the NAO? |
title_full_unstemmed |
Is the decadal variability in the tropical Atlantic a precursor to the NAO? |
title_sort |
is the decadal variability in the tropical atlantic a precursor to the nao? |
publishDate |
2018 |
url |
https://doi.org/10.5194/angeo-26-4075-2008 https://angeo.copernicus.org/articles/26/4075/2008/ |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
eISSN: 1432-0576 |
op_relation |
doi:10.5194/angeo-26-4075-2008 https://angeo.copernicus.org/articles/26/4075/2008/ |
op_doi |
https://doi.org/10.5194/angeo-26-4075-2008 |
container_title |
Annales Geophysicae |
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26 |
container_issue |
12 |
container_start_page |
4075 |
op_container_end_page |
4080 |
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1766129471452086272 |