Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic
Data collected at 42ºN, 10ºW in the intergyre region of the Northeast Atlantic show significant year to year variability in the T-S characteristics of the upper 800m of the water column. Taking salinity values on the sq = 27.1 kg m-3 isopycnal as representative of the Eastern North Atlantic Central...
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ftdoajarticles:oai:doaj.org/article:be2a2814d4364909b036bbdc016f26e9 2023-05-15T17:28:01+02:00 Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic F. F. Pérez R. T. Pollard J. F. Read V. Valencia J. M. Cabanas A. F. Ríos 2000-09-01T00:00:00Z https://doi.org/10.3989/scimar.2000.64n3347 https://doaj.org/article/be2a2814d4364909b036bbdc016f26e9 EN eng Consejo Superior de Investigaciones Científicas http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/774 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.2000.64n3347 https://doaj.org/article/be2a2814d4364909b036bbdc016f26e9 Scientia Marina, Vol 64, Iss 3, Pp 347-353 (2000) decadal changes t-s north atlantic nao enacw Aquaculture. Fisheries. Angling SH1-691 article 2000 ftdoajarticles https://doi.org/10.3989/scimar.2000.64n3347 2022-12-31T14:36:28Z Data collected at 42ºN, 10ºW in the intergyre region of the Northeast Atlantic show significant year to year variability in the T-S characteristics of the upper 800m of the water column. Taking salinity values on the sq = 27.1 kg m-3 isopycnal as representative of the Eastern North Atlantic Central Water mass it was found that the variability correlates well with the wind stress at 43ºN, 11ºW, with cumulative river discharge (which we take as an index of precipitation over the ocean) and with the NAO (which is an index of the strength and position of storm tracks and the state of the evaporation-precipitation balance). The covariation illustrates the close coupling between water mass formation and climate in the North Atlantic, where climate changes affect the deep ventilation by which ENACW is formed and the evaporation-precipitation balance from which the T-S signature results. Hints of a 20 year cycle in the ocean correlate with a 20 year periodicity in the NAO. It remains to be established whether there is a feedback mechanism by which water mass anomalies affect the climate and the intensity and variation of the NAO pattern, and the extent to which upper ocean observations can be used as an indicator of future climate trends. Article in Journal/Newspaper North Atlantic Northeast Atlantic Directory of Open Access Journals: DOAJ Articles Scientia Marina 64 3 347 353 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
decadal changes t-s north atlantic nao enacw Aquaculture. Fisheries. Angling SH1-691 |
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decadal changes t-s north atlantic nao enacw Aquaculture. Fisheries. Angling SH1-691 F. F. Pérez R. T. Pollard J. F. Read V. Valencia J. M. Cabanas A. F. Ríos Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic |
topic_facet |
decadal changes t-s north atlantic nao enacw Aquaculture. Fisheries. Angling SH1-691 |
description |
Data collected at 42ºN, 10ºW in the intergyre region of the Northeast Atlantic show significant year to year variability in the T-S characteristics of the upper 800m of the water column. Taking salinity values on the sq = 27.1 kg m-3 isopycnal as representative of the Eastern North Atlantic Central Water mass it was found that the variability correlates well with the wind stress at 43ºN, 11ºW, with cumulative river discharge (which we take as an index of precipitation over the ocean) and with the NAO (which is an index of the strength and position of storm tracks and the state of the evaporation-precipitation balance). The covariation illustrates the close coupling between water mass formation and climate in the North Atlantic, where climate changes affect the deep ventilation by which ENACW is formed and the evaporation-precipitation balance from which the T-S signature results. Hints of a 20 year cycle in the ocean correlate with a 20 year periodicity in the NAO. It remains to be established whether there is a feedback mechanism by which water mass anomalies affect the climate and the intensity and variation of the NAO pattern, and the extent to which upper ocean observations can be used as an indicator of future climate trends. |
format |
Article in Journal/Newspaper |
author |
F. F. Pérez R. T. Pollard J. F. Read V. Valencia J. M. Cabanas A. F. Ríos |
author_facet |
F. F. Pérez R. T. Pollard J. F. Read V. Valencia J. M. Cabanas A. F. Ríos |
author_sort |
F. F. Pérez |
title |
Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic |
title_short |
Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic |
title_full |
Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic |
title_fullStr |
Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic |
title_full_unstemmed |
Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic |
title_sort |
climatological coupling of the thermohaline decadal changes in central water of the eastern north atlantic |
publisher |
Consejo Superior de Investigaciones Científicas |
publishDate |
2000 |
url |
https://doi.org/10.3989/scimar.2000.64n3347 https://doaj.org/article/be2a2814d4364909b036bbdc016f26e9 |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
Scientia Marina, Vol 64, Iss 3, Pp 347-353 (2000) |
op_relation |
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/774 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.2000.64n3347 https://doaj.org/article/be2a2814d4364909b036bbdc016f26e9 |
op_doi |
https://doi.org/10.3989/scimar.2000.64n3347 |
container_title |
Scientia Marina |
container_volume |
64 |
container_issue |
3 |
container_start_page |
347 |
op_container_end_page |
353 |
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1766120466227920896 |