Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic
Publicación online disponible en: http://www.icm.csic.es/scimar/index.php 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...
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ftcsic:oai:digital.csic.es:10261/5303 2024-02-11T10:06:06+01:00 Climatological coupling of the thermohaline decadal changes in Central Water of the Eastern North Atlantic Pérez, Fiz F. Pollard, R. T. Read, J. F. Valencia, Victoriano Cabanas, J. M. Ríos, Aida F. 2000 429287 bytes application/pdf http://hdl.handle.net/10261/5303 en eng CSIC - Instituto de Ciencias del Mar (ICM) Scientia Marina 64(3): 347-353 (2000) 0214-8358 http://hdl.handle.net/10261/5303 1886-8134 open Decadal changes T-S North Atlantic NAO ENACW artículo http://purl.org/coar/resource_type/c_6501 2000 ftcsic 2024-01-16T09:19:49Z Publicación online disponible en: http://www.icm.csic.es/scimar/index.php 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. Peer reviewed Article in Journal/Newspaper North Atlantic Northeast Atlantic Digital.CSIC (Spanish National Research Council) |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Decadal changes T-S North Atlantic NAO ENACW |
spellingShingle |
Decadal changes T-S North Atlantic NAO ENACW Pérez, Fiz F. Pollard, R. T. Read, J. F. Valencia, Victoriano Cabanas, J. M. Ríos, Aida F. 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 |
description |
Publicación online disponible en: http://www.icm.csic.es/scimar/index.php 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. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Pérez, Fiz F. Pollard, R. T. Read, J. F. Valencia, Victoriano Cabanas, J. M. Ríos, Aida F. |
author_facet |
Pérez, Fiz F. Pollard, R. T. Read, J. F. Valencia, Victoriano Cabanas, J. M. Ríos, Aida F. |
author_sort |
Pérez, Fiz F. |
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 |
CSIC - Instituto de Ciencias del Mar (ICM) |
publishDate |
2000 |
url |
http://hdl.handle.net/10261/5303 |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_relation |
Scientia Marina 64(3): 347-353 (2000) 0214-8358 http://hdl.handle.net/10261/5303 1886-8134 |
op_rights |
open |
_version_ |
1790603577045024768 |