Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre : major role of DOC in mesopelagic respiration
© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Scientific Reports 7 (2017): 10129, doi:10.1038/s41598-017-10974-y. Transports of suspended particulate (POCsusp) and dissolved (DOC) organic carbon...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9243 2023-05-15T17:28:12+02:00 Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre : major role of DOC in mesopelagic respiration Santana-Falcón, Yeray Álvarez-Salgado, Xosé Antón Pérez-Hernández, M. Dolores Hernández-Guerra, Alonso Mason, Evan Arístegui, Javier 2017-08-31 https://hdl.handle.net/1912/9243 en_US eng Nature Publishing Group https://doi.org/10.1038/s41598-017-10974-y Scientific Reports 7 (2017): 10129 https://hdl.handle.net/1912/9243 doi:10.1038/s41598-017-10974-y Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ CC-BY Scientific Reports 7 (2017): 10129 doi:10.1038/s41598-017-10974-y Article 2017 ftwhoas https://doi.org/10.1038/s41598-017-10974-y 2022-05-28T22:59:59Z © The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Scientific Reports 7 (2017): 10129, doi:10.1038/s41598-017-10974-y. Transports of suspended particulate (POCsusp) and dissolved (DOC) organic carbon are inferred from a box-model covering the eastern boundary of the North Atlantic subtropical gyre. Corresponding net respiration rates (R) are obtained from a net organic carbon budget that is based on the transport estimates, and includes both vertical and lateral fluxes. The overall R in the mesopelagic layer (100–1500 m) is 1.6 ± 0.4 mmol C m−2 d−1. DOC accounts for up to 53% of R as a result of drawdown of organic carbon within Eastern North Atlantic Central Water (ENACW) that is entrained into sinking Mediterranean Overflow Water (MOW) that leads to formation of Mediterranean water (MW) at intermediate depths (~900 m). DOC represents 90% of the respired non-sinking organic carbon. When converted into oxygen units, the computed net respiration rate represents less than half the oxygen utilization rates (OUR) reported for the mesopelagic waters of the subtropical North Atlantic. Mesoscale processes in the area, not quantified with our approach, could account in part for the OUR differences observed between our carbon budget and other published studies from the North Atlantic, although seasonal or interannual variability could also be responsible for the difference in the estimates. This research was supported by projects ORCA (CTM2005-04701-CO2-01), Malaspina (CSD2008-00077), HOTMIX (CTM2011-30010-C02) and FLUXES (CTM2015-69392-C3), financed by the Spanish “Plan Nacional de I + D”. YSF was supported by a Spanish fellowship from the Agencia Canaria de Investigación, Innovación y Sociedad de la Información (ACIISI). EM has been partially supported by the Copernicus Marine Environment Monitoring Service (CMEMS) MedSUB project, and a post-doctoral grant from the Conselleria d’Educació, Cultura i Universitats del ... Article in Journal/Newspaper North Atlantic Orca Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Scientific Reports 7 1 |
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© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Scientific Reports 7 (2017): 10129, doi:10.1038/s41598-017-10974-y. Transports of suspended particulate (POCsusp) and dissolved (DOC) organic carbon are inferred from a box-model covering the eastern boundary of the North Atlantic subtropical gyre. Corresponding net respiration rates (R) are obtained from a net organic carbon budget that is based on the transport estimates, and includes both vertical and lateral fluxes. The overall R in the mesopelagic layer (100–1500 m) is 1.6 ± 0.4 mmol C m−2 d−1. DOC accounts for up to 53% of R as a result of drawdown of organic carbon within Eastern North Atlantic Central Water (ENACW) that is entrained into sinking Mediterranean Overflow Water (MOW) that leads to formation of Mediterranean water (MW) at intermediate depths (~900 m). DOC represents 90% of the respired non-sinking organic carbon. When converted into oxygen units, the computed net respiration rate represents less than half the oxygen utilization rates (OUR) reported for the mesopelagic waters of the subtropical North Atlantic. Mesoscale processes in the area, not quantified with our approach, could account in part for the OUR differences observed between our carbon budget and other published studies from the North Atlantic, although seasonal or interannual variability could also be responsible for the difference in the estimates. This research was supported by projects ORCA (CTM2005-04701-CO2-01), Malaspina (CSD2008-00077), HOTMIX (CTM2011-30010-C02) and FLUXES (CTM2015-69392-C3), financed by the Spanish “Plan Nacional de I + D”. YSF was supported by a Spanish fellowship from the Agencia Canaria de Investigación, Innovación y Sociedad de la Información (ACIISI). EM has been partially supported by the Copernicus Marine Environment Monitoring Service (CMEMS) MedSUB project, and a post-doctoral grant from the Conselleria d’Educació, Cultura i Universitats del ... |
format |
Article in Journal/Newspaper |
author |
Santana-Falcón, Yeray Álvarez-Salgado, Xosé Antón Pérez-Hernández, M. Dolores Hernández-Guerra, Alonso Mason, Evan Arístegui, Javier |
spellingShingle |
Santana-Falcón, Yeray Álvarez-Salgado, Xosé Antón Pérez-Hernández, M. Dolores Hernández-Guerra, Alonso Mason, Evan Arístegui, Javier Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre : major role of DOC in mesopelagic respiration |
author_facet |
Santana-Falcón, Yeray Álvarez-Salgado, Xosé Antón Pérez-Hernández, M. Dolores Hernández-Guerra, Alonso Mason, Evan Arístegui, Javier |
author_sort |
Santana-Falcón, Yeray |
title |
Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre : major role of DOC in mesopelagic respiration |
title_short |
Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre : major role of DOC in mesopelagic respiration |
title_full |
Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre : major role of DOC in mesopelagic respiration |
title_fullStr |
Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre : major role of DOC in mesopelagic respiration |
title_full_unstemmed |
Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre : major role of DOC in mesopelagic respiration |
title_sort |
organic carbon budget for the eastern boundary of the north atlantic subtropical gyre : major role of doc in mesopelagic respiration |
publisher |
Nature Publishing Group |
publishDate |
2017 |
url |
https://hdl.handle.net/1912/9243 |
genre |
North Atlantic Orca |
genre_facet |
North Atlantic Orca |
op_source |
Scientific Reports 7 (2017): 10129 doi:10.1038/s41598-017-10974-y |
op_relation |
https://doi.org/10.1038/s41598-017-10974-y Scientific Reports 7 (2017): 10129 https://hdl.handle.net/1912/9243 doi:10.1038/s41598-017-10974-y |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-017-10974-y |
container_title |
Scientific Reports |
container_volume |
7 |
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1 |
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1766120736364167168 |