Subpolar gyre decadal variability explains the recent oxygenation in the Irminger Sea
International audience Accurate monitoring of the long-term trend of oxygen content at global scale requires a better knowledge of the regional oxygen variability at interannual to decadal time scale. Here, we combined the Argo dataset and repeated ship-based sections to investigate the drivers of t...
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ftanrparis:oai:HAL:hal-04203923v1 2024-09-15T18:17:16+00:00 Subpolar gyre decadal variability explains the recent oxygenation in the Irminger Sea Feucher, Charlène Portela, Esther Kolodziejczyk, Nicolas Thierry, Virginie Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-21-ESRE-0019,ARGO-2030,ARGO-2030(2021) 2022-11 https://hal.science/hal-04203923 https://hal.science/hal-04203923/document https://hal.science/hal-04203923/file/s43247-022-00570-y.pdf https://doi.org/10.1038/s43247-022-00570-y en eng HAL CCSD Springer Nature info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-022-00570-y hal-04203923 https://hal.science/hal-04203923 https://hal.science/hal-04203923/document https://hal.science/hal-04203923/file/s43247-022-00570-y.pdf doi:10.1038/s43247-022-00570-y http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2662-4435 Communications Earth & Environment https://hal.science/hal-04203923 Communications Earth & Environment, 2022, 3 (1), 279 (9p.). ⟨10.1038/s43247-022-00570-y⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftanrparis https://doi.org/10.1038/s43247-022-00570-y 2024-07-12T10:48:43Z International audience Accurate monitoring of the long-term trend of oxygen content at global scale requires a better knowledge of the regional oxygen variability at interannual to decadal time scale. Here, we combined the Argo dataset and repeated ship-based sections to investigate the drivers of the oxygen variability in the North Atlantic Ocean, a key region for the oxygen supply into the deep ocean. We focus on the Labrador Sea Water in the Irminger Sea over the period 1991–2018 and we show that the oxygen solubility explains less than a third of the oxygen variability. In turn, the main drivers of the oxygen variability are due to changes in vertical mixing, advection, and other processes as revealed by Apparent Oxygen Utilization computation. Our findings revealed the key role of physical processes on the changes in oxygen variability and highlight the need of keeping a sustained monitoring of those processes to disentangle human-induced changes in oxygen from decadal natural variability. Article in Journal/Newspaper Labrador Sea North Atlantic Portail HAL-ANR (Agence Nationale de la Recherche) Communications Earth & Environment 3 1 |
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Portail HAL-ANR (Agence Nationale de la Recherche) |
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language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Feucher, Charlène Portela, Esther Kolodziejczyk, Nicolas Thierry, Virginie Subpolar gyre decadal variability explains the recent oxygenation in the Irminger Sea |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Accurate monitoring of the long-term trend of oxygen content at global scale requires a better knowledge of the regional oxygen variability at interannual to decadal time scale. Here, we combined the Argo dataset and repeated ship-based sections to investigate the drivers of the oxygen variability in the North Atlantic Ocean, a key region for the oxygen supply into the deep ocean. We focus on the Labrador Sea Water in the Irminger Sea over the period 1991–2018 and we show that the oxygen solubility explains less than a third of the oxygen variability. In turn, the main drivers of the oxygen variability are due to changes in vertical mixing, advection, and other processes as revealed by Apparent Oxygen Utilization computation. Our findings revealed the key role of physical processes on the changes in oxygen variability and highlight the need of keeping a sustained monitoring of those processes to disentangle human-induced changes in oxygen from decadal natural variability. |
author2 |
Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-21-ESRE-0019,ARGO-2030,ARGO-2030(2021) |
format |
Article in Journal/Newspaper |
author |
Feucher, Charlène Portela, Esther Kolodziejczyk, Nicolas Thierry, Virginie |
author_facet |
Feucher, Charlène Portela, Esther Kolodziejczyk, Nicolas Thierry, Virginie |
author_sort |
Feucher, Charlène |
title |
Subpolar gyre decadal variability explains the recent oxygenation in the Irminger Sea |
title_short |
Subpolar gyre decadal variability explains the recent oxygenation in the Irminger Sea |
title_full |
Subpolar gyre decadal variability explains the recent oxygenation in the Irminger Sea |
title_fullStr |
Subpolar gyre decadal variability explains the recent oxygenation in the Irminger Sea |
title_full_unstemmed |
Subpolar gyre decadal variability explains the recent oxygenation in the Irminger Sea |
title_sort |
subpolar gyre decadal variability explains the recent oxygenation in the irminger sea |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04203923 https://hal.science/hal-04203923/document https://hal.science/hal-04203923/file/s43247-022-00570-y.pdf https://doi.org/10.1038/s43247-022-00570-y |
genre |
Labrador Sea North Atlantic |
genre_facet |
Labrador Sea North Atlantic |
op_source |
ISSN: 2662-4435 Communications Earth & Environment https://hal.science/hal-04203923 Communications Earth & Environment, 2022, 3 (1), 279 (9p.). ⟨10.1038/s43247-022-00570-y⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-022-00570-y hal-04203923 https://hal.science/hal-04203923 https://hal.science/hal-04203923/document https://hal.science/hal-04203923/file/s43247-022-00570-y.pdf doi:10.1038/s43247-022-00570-y |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s43247-022-00570-y |
container_title |
Communications Earth & Environment |
container_volume |
3 |
container_issue |
1 |
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1810455281904123904 |