An experimental study of the Atlantic variability on interdecadal timescales
A series of laboratory experiments has been carried out to model the basic dynamics of the multidecadal variability observed in North Atlantic sea surface temperature (SST) records. According to the minimal numerical sector model introduced by te Raa and Dijkstra (2002), the three key components to...
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Online Access: | https://doi.org/10.5194/npg-19-335-2012 https://doaj.org/article/0f4ac4b16daa4bdcb6ff821bcf75eac0 |
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ftdoajarticles:oai:doaj.org/article:0f4ac4b16daa4bdcb6ff821bcf75eac0 2023-05-15T17:29:54+02:00 An experimental study of the Atlantic variability on interdecadal timescales M. Vincze I. M. Jánosi E. Barsy T. Tél A. Várai 2012-06-01T00:00:00Z https://doi.org/10.5194/npg-19-335-2012 https://doaj.org/article/0f4ac4b16daa4bdcb6ff821bcf75eac0 EN eng Copernicus Publications http://www.nonlin-processes-geophys.net/19/335/2012/npg-19-335-2012.pdf https://doaj.org/toc/1023-5809 https://doaj.org/toc/1607-7946 doi:10.5194/npg-19-335-2012 1023-5809 1607-7946 https://doaj.org/article/0f4ac4b16daa4bdcb6ff821bcf75eac0 Nonlinear Processes in Geophysics, Vol 19, Iss 3, Pp 335-343 (2012) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2012 ftdoajarticles https://doi.org/10.5194/npg-19-335-2012 2022-12-31T14:46:53Z A series of laboratory experiments has been carried out to model the basic dynamics of the multidecadal variability observed in North Atlantic sea surface temperature (SST) records. According to the minimal numerical sector model introduced by te Raa and Dijkstra (2002), the three key components to excite such a low-frequency variability are rotation, meridional temperature gradient and additive thermal noise in the surface heat forcing. If these components are present, periodic perturbations of the overturning background flow are excited, leading to thermal Rossby mode like propagation of anomalous patches in the SST field. Our tabletop scale setup was built to capture this phenomenon, and to test whether the aforementioned three components are indeed sufficient to generate a low-frequency variability in the system. The results are compared to those of the numerical models, as well as to oceanic SST reanalysis records. To the best of our knowledge, the experiment described here is the very first to investigate the dynamics of the North Atlantic multidecadal variability in a laboratory-scale setup. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Raa ENVELOPE(14.933,14.933,68.583,68.583) Nonlinear Processes in Geophysics 19 3 335 343 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 M. Vincze I. M. Jánosi E. Barsy T. Tél A. Várai An experimental study of the Atlantic variability on interdecadal timescales |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
A series of laboratory experiments has been carried out to model the basic dynamics of the multidecadal variability observed in North Atlantic sea surface temperature (SST) records. According to the minimal numerical sector model introduced by te Raa and Dijkstra (2002), the three key components to excite such a low-frequency variability are rotation, meridional temperature gradient and additive thermal noise in the surface heat forcing. If these components are present, periodic perturbations of the overturning background flow are excited, leading to thermal Rossby mode like propagation of anomalous patches in the SST field. Our tabletop scale setup was built to capture this phenomenon, and to test whether the aforementioned three components are indeed sufficient to generate a low-frequency variability in the system. The results are compared to those of the numerical models, as well as to oceanic SST reanalysis records. To the best of our knowledge, the experiment described here is the very first to investigate the dynamics of the North Atlantic multidecadal variability in a laboratory-scale setup. |
format |
Article in Journal/Newspaper |
author |
M. Vincze I. M. Jánosi E. Barsy T. Tél A. Várai |
author_facet |
M. Vincze I. M. Jánosi E. Barsy T. Tél A. Várai |
author_sort |
M. Vincze |
title |
An experimental study of the Atlantic variability on interdecadal timescales |
title_short |
An experimental study of the Atlantic variability on interdecadal timescales |
title_full |
An experimental study of the Atlantic variability on interdecadal timescales |
title_fullStr |
An experimental study of the Atlantic variability on interdecadal timescales |
title_full_unstemmed |
An experimental study of the Atlantic variability on interdecadal timescales |
title_sort |
experimental study of the atlantic variability on interdecadal timescales |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/npg-19-335-2012 https://doaj.org/article/0f4ac4b16daa4bdcb6ff821bcf75eac0 |
long_lat |
ENVELOPE(14.933,14.933,68.583,68.583) |
geographic |
Raa |
geographic_facet |
Raa |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Nonlinear Processes in Geophysics, Vol 19, Iss 3, Pp 335-343 (2012) |
op_relation |
http://www.nonlin-processes-geophys.net/19/335/2012/npg-19-335-2012.pdf https://doaj.org/toc/1023-5809 https://doaj.org/toc/1607-7946 doi:10.5194/npg-19-335-2012 1023-5809 1607-7946 https://doaj.org/article/0f4ac4b16daa4bdcb6ff821bcf75eac0 |
op_doi |
https://doi.org/10.5194/npg-19-335-2012 |
container_title |
Nonlinear Processes in Geophysics |
container_volume |
19 |
container_issue |
3 |
container_start_page |
335 |
op_container_end_page |
343 |
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1766125140873052160 |