The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic
The GEOVIDE cruise was carried out in the subpolar North Atlantic (SPNA) along the OVIDE section and across the Labrador Sea in May–June 2014. It was planned to clarify the distribution of the trace elements and their isotopes in the SPNA as part of the GEOTRACES international program. This paper fo...
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ftarchimer:oai:archimer.ifremer.fr:52302 2023-05-15T17:06:12+02:00 The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic Zunino, Patricia Lherminier, Pascale Mercier, Herle Daniault, Nathalie Garcia-ibanez, Maribel L. Perez, Fiz F. 2017-11 application/pdf https://archimer.ifremer.fr/doc/00412/52302/53069.pdf https://doi.org/10.5194/bg-14-5323-2017 https://archimer.ifremer.fr/doc/00412/52302/ eng eng Copernicus Gesellschaft Mbh info:eu-repo/grantAgreement/EC/FP7/633211/EU//AtlantOS https://archimer.ifremer.fr/doc/00412/52302/53069.pdf doi:10.5194/bg-14-5323-2017 https://archimer.ifremer.fr/doc/00412/52302/ Author(s) 2017. This work is distributed under the Creative Commons Attribution 4.0 License. info:eu-repo/semantics/openAccess restricted use CC-BY Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2017-11 , Vol. 14 , N. 23 , P. 5323-5342 text Publication info:eu-repo/semantics/article 2017 ftarchimer https://doi.org/10.5194/bg-14-5323-2017 2021-09-23T20:30:09Z The GEOVIDE cruise was carried out in the subpolar North Atlantic (SPNA) along the OVIDE section and across the Labrador Sea in May–June 2014. It was planned to clarify the distribution of the trace elements and their isotopes in the SPNA as part of the GEOTRACES international program. This paper focuses on the state of the circulation and distribution of thermohaline properties during the cruise. In terms of circulation, the comparison with the 2002–2012 mean state shows a more intense Irminger Current and also a weaker North Atlantic Current, with a transfer of volume transport from its northern to its central branch. However, those anomalies are compatible with the variability already observed along the OVIDE section in the 2000s. In terms of properties, the surface waters of the eastern SPNA were much colder and fresher than the averages over 2002–2012. In spite of negative temperature anomalies in the surface waters, the heat transport across the OVIDE section estimated at 0.56 ± 0.06 PW was the largest measured since 2002. This relatively large value is related to the relatively strong Meridional Overturning Circulation measured across the OVIDE section during GEOVIDE (18.7 ± 3.0 Sv). By analyzing the air–sea heat and freshwater fluxes over the eastern SPNA in relation to the heat and freshwater content changes observed during 2013 and 2014, we concluded that on a short timescale these changes were mainly driven by air–sea heat and freshwater fluxes rather than by ocean circulation. Article in Journal/Newspaper Labrador Sea north atlantic current North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Biogeosciences 14 23 5323 5342 |
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Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
The GEOVIDE cruise was carried out in the subpolar North Atlantic (SPNA) along the OVIDE section and across the Labrador Sea in May–June 2014. It was planned to clarify the distribution of the trace elements and their isotopes in the SPNA as part of the GEOTRACES international program. This paper focuses on the state of the circulation and distribution of thermohaline properties during the cruise. In terms of circulation, the comparison with the 2002–2012 mean state shows a more intense Irminger Current and also a weaker North Atlantic Current, with a transfer of volume transport from its northern to its central branch. However, those anomalies are compatible with the variability already observed along the OVIDE section in the 2000s. In terms of properties, the surface waters of the eastern SPNA were much colder and fresher than the averages over 2002–2012. In spite of negative temperature anomalies in the surface waters, the heat transport across the OVIDE section estimated at 0.56 ± 0.06 PW was the largest measured since 2002. This relatively large value is related to the relatively strong Meridional Overturning Circulation measured across the OVIDE section during GEOVIDE (18.7 ± 3.0 Sv). By analyzing the air–sea heat and freshwater fluxes over the eastern SPNA in relation to the heat and freshwater content changes observed during 2013 and 2014, we concluded that on a short timescale these changes were mainly driven by air–sea heat and freshwater fluxes rather than by ocean circulation. |
format |
Article in Journal/Newspaper |
author |
Zunino, Patricia Lherminier, Pascale Mercier, Herle Daniault, Nathalie Garcia-ibanez, Maribel L. Perez, Fiz F. |
spellingShingle |
Zunino, Patricia Lherminier, Pascale Mercier, Herle Daniault, Nathalie Garcia-ibanez, Maribel L. Perez, Fiz F. The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic |
author_facet |
Zunino, Patricia Lherminier, Pascale Mercier, Herle Daniault, Nathalie Garcia-ibanez, Maribel L. Perez, Fiz F. |
author_sort |
Zunino, Patricia |
title |
The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic |
title_short |
The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic |
title_full |
The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic |
title_fullStr |
The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic |
title_full_unstemmed |
The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic |
title_sort |
geovide cruise in may–june 2014 reveals an intense meridional overturning circulation over a cold and fresh subpolar north atlantic |
publisher |
Copernicus Gesellschaft Mbh |
publishDate |
2017 |
url |
https://archimer.ifremer.fr/doc/00412/52302/53069.pdf https://doi.org/10.5194/bg-14-5323-2017 https://archimer.ifremer.fr/doc/00412/52302/ |
genre |
Labrador Sea north atlantic current North Atlantic |
genre_facet |
Labrador Sea north atlantic current North Atlantic |
op_source |
Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2017-11 , Vol. 14 , N. 23 , P. 5323-5342 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/633211/EU//AtlantOS https://archimer.ifremer.fr/doc/00412/52302/53069.pdf doi:10.5194/bg-14-5323-2017 https://archimer.ifremer.fr/doc/00412/52302/ |
op_rights |
Author(s) 2017. This work is distributed under the Creative Commons Attribution 4.0 License. info:eu-repo/semantics/openAccess restricted use |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-14-5323-2017 |
container_title |
Biogeosciences |
container_volume |
14 |
container_issue |
23 |
container_start_page |
5323 |
op_container_end_page |
5342 |
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1766061219870932992 |