Large changes in the hydrographic structure of the Bay of Biscay after the extreme mixing of winter 2005
The extremely cold and dry winter of 2005 in southwestern Europe caused a profound transformation of the upper ocean hydrographic structure of the Bay of Biscay area, making it completely different from the previous decade. The strong local winter cooling resulted in the highest density flux estimat...
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Online Access: | http://hdl.handle.net/10508/7776 http://hdl.handle.net/10261/321491 https://doi.org/10.1029/2008JC004974 |
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ftcsic:oai:digital.csic.es:10261/321491 2024-02-11T10:06:34+01:00 Large changes in the hydrographic structure of the Bay of Biscay after the extreme mixing of winter 2005 Somavilla, Raquel González-Pola, César Rodríguez, C. Josey, S.A. Sánchez-Leal, Ricardo Félix Lavín, Alicia Atlantic Ocean Central Atlantic Eastern Central Atlantic Bay of Biscay 2009 http://hdl.handle.net/10508/7776 http://hdl.handle.net/10261/321491 https://doi.org/10.1029/2008JC004974 unknown Centro Oceanográfico de Santander https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2008JC004974 Journal of Geophysical Research-Oceans, 114, C01001. 2009: - http://hdl.handle.net/10508/7776 http://hdl.handle.net/10261/321491 doi:10.1029/2008JC004974 914 none Medio Marino Centro Oceanográfico de Santander research article 2009 ftcsic https://doi.org/10.1029/2008JC004974 2024-01-16T11:46:30Z The extremely cold and dry winter of 2005 in southwestern Europe caused a profound transformation of the upper ocean hydrographic structure of the Bay of Biscay area, making it completely different from the previous decade. The strong local winter cooling resulted in the highest density flux estimated since the 1960s. The extreme buoyancy loss triggered the mixed layer to reach unprecedented depths affecting directly the level of local modal waters that are usually unconnected to air-sea interaction. The water column just below the climatological average mixed layer entered in a process of quick cooling that compensated in 2 years the 0.5°C gained in the period 1994–2004. Enhanced by a pronounced precipitation deficit the event caused concurrently a downward salt injection that made deeper levels of East North Atlantic Central Water begin a process of warming by isopycnal change, something never observed during the 1990s. As an overall result, the stratification of the upper permanent thermocline was dramatically reduced. The observed cold low stratification anomaly had a substantial spatial extent and remained for 2 years below the seasonal thermocline development, constituting a typical case of the reemergence mechanism, but was abruptly interrupted in the warmest winter on record of 2007. In addition to the hydrographic changes, the winter 2005 event had a notable effect on the marine ecosystem. Sí Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Journal of Geophysical Research 114 C1 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Medio Marino Centro Oceanográfico de Santander |
spellingShingle |
Medio Marino Centro Oceanográfico de Santander Somavilla, Raquel González-Pola, César Rodríguez, C. Josey, S.A. Sánchez-Leal, Ricardo Félix Lavín, Alicia Large changes in the hydrographic structure of the Bay of Biscay after the extreme mixing of winter 2005 |
topic_facet |
Medio Marino Centro Oceanográfico de Santander |
description |
The extremely cold and dry winter of 2005 in southwestern Europe caused a profound transformation of the upper ocean hydrographic structure of the Bay of Biscay area, making it completely different from the previous decade. The strong local winter cooling resulted in the highest density flux estimated since the 1960s. The extreme buoyancy loss triggered the mixed layer to reach unprecedented depths affecting directly the level of local modal waters that are usually unconnected to air-sea interaction. The water column just below the climatological average mixed layer entered in a process of quick cooling that compensated in 2 years the 0.5°C gained in the period 1994–2004. Enhanced by a pronounced precipitation deficit the event caused concurrently a downward salt injection that made deeper levels of East North Atlantic Central Water begin a process of warming by isopycnal change, something never observed during the 1990s. As an overall result, the stratification of the upper permanent thermocline was dramatically reduced. The observed cold low stratification anomaly had a substantial spatial extent and remained for 2 years below the seasonal thermocline development, constituting a typical case of the reemergence mechanism, but was abruptly interrupted in the warmest winter on record of 2007. In addition to the hydrographic changes, the winter 2005 event had a notable effect on the marine ecosystem. Sí |
format |
Article in Journal/Newspaper |
author |
Somavilla, Raquel González-Pola, César Rodríguez, C. Josey, S.A. Sánchez-Leal, Ricardo Félix Lavín, Alicia |
author_facet |
Somavilla, Raquel González-Pola, César Rodríguez, C. Josey, S.A. Sánchez-Leal, Ricardo Félix Lavín, Alicia |
author_sort |
Somavilla, Raquel |
title |
Large changes in the hydrographic structure of the Bay of Biscay after the extreme mixing of winter 2005 |
title_short |
Large changes in the hydrographic structure of the Bay of Biscay after the extreme mixing of winter 2005 |
title_full |
Large changes in the hydrographic structure of the Bay of Biscay after the extreme mixing of winter 2005 |
title_fullStr |
Large changes in the hydrographic structure of the Bay of Biscay after the extreme mixing of winter 2005 |
title_full_unstemmed |
Large changes in the hydrographic structure of the Bay of Biscay after the extreme mixing of winter 2005 |
title_sort |
large changes in the hydrographic structure of the bay of biscay after the extreme mixing of winter 2005 |
publishDate |
2009 |
url |
http://hdl.handle.net/10508/7776 http://hdl.handle.net/10261/321491 https://doi.org/10.1029/2008JC004974 |
op_coverage |
Atlantic Ocean Central Atlantic Eastern Central Atlantic Bay of Biscay |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Centro Oceanográfico de Santander https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2008JC004974 Journal of Geophysical Research-Oceans, 114, C01001. 2009: - http://hdl.handle.net/10508/7776 http://hdl.handle.net/10261/321491 doi:10.1029/2008JC004974 914 |
op_rights |
none |
op_doi |
https://doi.org/10.1029/2008JC004974 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
C1 |
_version_ |
1790604358577029120 |