Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean
The North Atlantic Ocean is a major sink region for atmospheric CO2 and contributes to the storage of anthropogenic carbon (Cant). While there is general agreement that the intensity of the meridional overturning circulation (MOC) modulates uptake, transport and storage of Cant in the North Atlantic...
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Copernicus Gesellschaft Mbh
2018
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Online Access: | https://archimer.ifremer.fr/doc/00454/56587/58275.pdf https://archimer.ifremer.fr/doc/00454/56587/58276.pdf https://archimer.ifremer.fr/doc/00454/56587/58277.pdf https://archimer.ifremer.fr/doc/00454/56587/58278.pdf https://archimer.ifremer.fr/doc/00454/56587/58279.pdf https://archimer.ifremer.fr/doc/00454/56587/58280.pdf https://archimer.ifremer.fr/doc/00454/56587/58281.pdf https://archimer.ifremer.fr/doc/00454/56587/58282.pdf https://doi.org/10.5194/bg-15-4661-2018 https://archimer.ifremer.fr/doc/00454/56587/ |
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ftarchimer:oai:archimer.ifremer.fr:56587 2023-05-15T17:25:28+02:00 Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean Racape, Virginie Zunino, Patricia Mercier, Herle Lherminier, Pascale Bopp, Laurent Perez, Fiz F Gehlen, Marion 2018-07 application/pdf https://archimer.ifremer.fr/doc/00454/56587/58275.pdf https://archimer.ifremer.fr/doc/00454/56587/58276.pdf https://archimer.ifremer.fr/doc/00454/56587/58277.pdf https://archimer.ifremer.fr/doc/00454/56587/58278.pdf https://archimer.ifremer.fr/doc/00454/56587/58279.pdf https://archimer.ifremer.fr/doc/00454/56587/58280.pdf https://archimer.ifremer.fr/doc/00454/56587/58281.pdf https://archimer.ifremer.fr/doc/00454/56587/58282.pdf https://doi.org/10.5194/bg-15-4661-2018 https://archimer.ifremer.fr/doc/00454/56587/ eng eng Copernicus Gesellschaft Mbh info:eu-repo/grantAgreement/EC/FP7/264879/EU//CARBOCHANGE https://archimer.ifremer.fr/doc/00454/56587/58275.pdf https://archimer.ifremer.fr/doc/00454/56587/58276.pdf https://archimer.ifremer.fr/doc/00454/56587/58277.pdf https://archimer.ifremer.fr/doc/00454/56587/58278.pdf https://archimer.ifremer.fr/doc/00454/56587/58279.pdf https://archimer.ifremer.fr/doc/00454/56587/58280.pdf https://archimer.ifremer.fr/doc/00454/56587/58281.pdf https://archimer.ifremer.fr/doc/00454/56587/58282.pdf doi:10.5194/bg-15-4661-2018 https://archimer.ifremer.fr/doc/00454/56587/ Author(s) 2018. This work is distributed under the Creative Commons Attribution 3.0 License. info:eu-repo/semantics/openAccess restricted use CC-BY Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2018-07 , Vol. 15 , N. 14 , P. 4661-4682 text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.5194/bg-15-4661-2018 2021-09-23T20:31:34Z The North Atlantic Ocean is a major sink region for atmospheric CO2 and contributes to the storage of anthropogenic carbon (Cant). While there is general agreement that the intensity of the meridional overturning circulation (MOC) modulates uptake, transport and storage of Cant in the North Atlantic Subpolar Ocean, processes controlling their recent variability and evolution over the 21st century remain uncertain. This study investigates the relationship between transport, air-sea flux and storage rate of Cant in the North Atlantic Subpolar Ocean over the past 53 years. Its relies on the combined analysis of a multiannual in situ data set and outputs from a global biogeochemical ocean general circulation model (NEMO-PISCES) at 1/2 degrees spatial resolution forced by an atmospheric reanalysis. Despite an underestimation of Cant transport and an overestimation of anthropogenic air-sea CO2 flux in the model, the interannual variability of the regional Cant storage rate and its driving processes were well simulated by the model. Analysis of the multi-decadal simulation revealed that the MOC intensity variability was the major driver of the Cant transport variability at 25 and 36 degrees N, but not at OVIDE. At the subpolar OVIDE section, the interannual variability of Cant transport was controlled by the accumulation of Cant in the MOC upper limb. At multi-decadal timescales, long-term changes in the North Atlantic storage rate of Cant were driven by the increase in air-sea fluxes of anthropogenic CO2. North Atlantic Central Water played a key role for storing Cant in the upper layer of the subtropical region and for supplying Cant to Intermediate Water and North Atlantic Deep Water. The transfer of Cant from surface to deep waters occurred mainly north of the OVIDE section. Most of the Cant transferred to the deep ocean was stored in the subpolar region, while the remainder was exported to the subtropical gyre within the lower MOC. Article in Journal/Newspaper North Atlantic Deep Water North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Biogeosciences 15 14 4661 4682 |
institution |
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 North Atlantic Ocean is a major sink region for atmospheric CO2 and contributes to the storage of anthropogenic carbon (Cant). While there is general agreement that the intensity of the meridional overturning circulation (MOC) modulates uptake, transport and storage of Cant in the North Atlantic Subpolar Ocean, processes controlling their recent variability and evolution over the 21st century remain uncertain. This study investigates the relationship between transport, air-sea flux and storage rate of Cant in the North Atlantic Subpolar Ocean over the past 53 years. Its relies on the combined analysis of a multiannual in situ data set and outputs from a global biogeochemical ocean general circulation model (NEMO-PISCES) at 1/2 degrees spatial resolution forced by an atmospheric reanalysis. Despite an underestimation of Cant transport and an overestimation of anthropogenic air-sea CO2 flux in the model, the interannual variability of the regional Cant storage rate and its driving processes were well simulated by the model. Analysis of the multi-decadal simulation revealed that the MOC intensity variability was the major driver of the Cant transport variability at 25 and 36 degrees N, but not at OVIDE. At the subpolar OVIDE section, the interannual variability of Cant transport was controlled by the accumulation of Cant in the MOC upper limb. At multi-decadal timescales, long-term changes in the North Atlantic storage rate of Cant were driven by the increase in air-sea fluxes of anthropogenic CO2. North Atlantic Central Water played a key role for storing Cant in the upper layer of the subtropical region and for supplying Cant to Intermediate Water and North Atlantic Deep Water. The transfer of Cant from surface to deep waters occurred mainly north of the OVIDE section. Most of the Cant transferred to the deep ocean was stored in the subpolar region, while the remainder was exported to the subtropical gyre within the lower MOC. |
format |
Article in Journal/Newspaper |
author |
Racape, Virginie Zunino, Patricia Mercier, Herle Lherminier, Pascale Bopp, Laurent Perez, Fiz F Gehlen, Marion |
spellingShingle |
Racape, Virginie Zunino, Patricia Mercier, Herle Lherminier, Pascale Bopp, Laurent Perez, Fiz F Gehlen, Marion Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean |
author_facet |
Racape, Virginie Zunino, Patricia Mercier, Herle Lherminier, Pascale Bopp, Laurent Perez, Fiz F Gehlen, Marion |
author_sort |
Racape, Virginie |
title |
Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean |
title_short |
Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean |
title_full |
Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean |
title_fullStr |
Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean |
title_full_unstemmed |
Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean |
title_sort |
transport and storage of anthropogenic c in the north atlantic subpolar ocean |
publisher |
Copernicus Gesellschaft Mbh |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00454/56587/58275.pdf https://archimer.ifremer.fr/doc/00454/56587/58276.pdf https://archimer.ifremer.fr/doc/00454/56587/58277.pdf https://archimer.ifremer.fr/doc/00454/56587/58278.pdf https://archimer.ifremer.fr/doc/00454/56587/58279.pdf https://archimer.ifremer.fr/doc/00454/56587/58280.pdf https://archimer.ifremer.fr/doc/00454/56587/58281.pdf https://archimer.ifremer.fr/doc/00454/56587/58282.pdf https://doi.org/10.5194/bg-15-4661-2018 https://archimer.ifremer.fr/doc/00454/56587/ |
genre |
North Atlantic Deep Water North Atlantic |
genre_facet |
North Atlantic Deep Water North Atlantic |
op_source |
Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2018-07 , Vol. 15 , N. 14 , P. 4661-4682 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/264879/EU//CARBOCHANGE https://archimer.ifremer.fr/doc/00454/56587/58275.pdf https://archimer.ifremer.fr/doc/00454/56587/58276.pdf https://archimer.ifremer.fr/doc/00454/56587/58277.pdf https://archimer.ifremer.fr/doc/00454/56587/58278.pdf https://archimer.ifremer.fr/doc/00454/56587/58279.pdf https://archimer.ifremer.fr/doc/00454/56587/58280.pdf https://archimer.ifremer.fr/doc/00454/56587/58281.pdf https://archimer.ifremer.fr/doc/00454/56587/58282.pdf doi:10.5194/bg-15-4661-2018 https://archimer.ifremer.fr/doc/00454/56587/ |
op_rights |
Author(s) 2018. This work is distributed under the Creative Commons Attribution 3.0 License. info:eu-repo/semantics/openAccess restricted use |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-15-4661-2018 |
container_title |
Biogeosciences |
container_volume |
15 |
container_issue |
14 |
container_start_page |
4661 |
op_container_end_page |
4682 |
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1766116909125730304 |