Modeling the Nd isotopic composition in the North Atlantic basin using an eddy-permitting model
International audience Boundary Exchange (BE – exchange of elementsbetween continental margins and the open ocean) hasbeen emphasized as a key process in the oceanic cycle ofneodymium (Nd) (Lacan and Jeandel, 2005a). Here, we usea regional eddy-permitting resolution Ocean General CirculationModel (1...
Published in: | Ocean Science |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2010
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Online Access: | https://hal.science/hal-00543924 https://hal.science/hal-00543924/document https://hal.science/hal-00543924/file/os-6-789-2010.pdf https://doi.org/10.5194/os-6-789-2010 |
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English |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU]Sciences of the Universe [physics] |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU]Sciences of the Universe [physics] Arsouze, T. Treguier, A. M. Peronne, S. Dutay, J.C. Lacan, F. Jeandel, C. Modeling the Nd isotopic composition in the North Atlantic basin using an eddy-permitting model |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU]Sciences of the Universe [physics] |
description |
International audience Boundary Exchange (BE – exchange of elementsbetween continental margins and the open ocean) hasbeen emphasized as a key process in the oceanic cycle ofneodymium (Nd) (Lacan and Jeandel, 2005a). Here, we usea regional eddy-permitting resolution Ocean General CirculationModel (1/4) of the North Atlantic basin to simulatethe distribution of the Nd isotopic composition, consideringBE as the only source. Results show good agreementwith the data, confirming previous results obtained using thesame parameterization of the source in a coarse resolutionglobal model (Arsouze et al., 2007), and therefore the majorcontrol played by the BE processes in the Nd cycle onthe regional scale. We quantified the exchange rate of theBE, and found that the time needed for the continental marginsto significantly imprint the chemical composition of thesurrounding seawater (further referred as characteristic exchangetime) is of the order of 0.2 years. However, thetimescale of the BE may be subject to large variations as avery short exchange time (a few days) is needed to reproducethe highly negative values of surface waters in the LabradorSea, whereas a longer one (up to 0.5 years) is required tosimulate the radiogenic influence of basaltic margins and distinguishthe negative isotopic signatures of North AtlanticDeep Water from the more radiogenic southern origin watermasses. This likely represents geographical variations inerosion fluxes and the subsequent particle load onto the continentalmargins. Although the parameterization of the BEis the same in both configurations of the model, the characteristicexchange time in the eddy-permitting configuration issignificantly lower than the previous evaluations using a lowresolution configuration (6 months to 10 years), but howeverin agreement with the available seawater Nd isotope data.This results highlights the importance of the model dynamicsin simulating the BE process |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) GEOMAR LEGOS Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Arsouze, T. Treguier, A. M. Peronne, S. Dutay, J.C. Lacan, F. Jeandel, C. |
author_facet |
Arsouze, T. Treguier, A. M. Peronne, S. Dutay, J.C. Lacan, F. Jeandel, C. |
author_sort |
Arsouze, T. |
title |
Modeling the Nd isotopic composition in the North Atlantic basin using an eddy-permitting model |
title_short |
Modeling the Nd isotopic composition in the North Atlantic basin using an eddy-permitting model |
title_full |
Modeling the Nd isotopic composition in the North Atlantic basin using an eddy-permitting model |
title_fullStr |
Modeling the Nd isotopic composition in the North Atlantic basin using an eddy-permitting model |
title_full_unstemmed |
Modeling the Nd isotopic composition in the North Atlantic basin using an eddy-permitting model |
title_sort |
modeling the nd isotopic composition in the north atlantic basin using an eddy-permitting model |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00543924 https://hal.science/hal-00543924/document https://hal.science/hal-00543924/file/os-6-789-2010.pdf https://doi.org/10.5194/os-6-789-2010 |
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ENVELOPE(-65.433,-65.433,-66.883,-66.883) |
geographic |
Avery |
geographic_facet |
Avery |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1812-0784 EISSN: 1812-0792 Ocean Science https://hal.science/hal-00543924 Ocean Science, 2010, 6 (3), pp.789 - 797. ⟨10.5194/os-6-789-2010⟩ |
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info:eu-repo/semantics/OpenAccess |
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https://doi.org/10.5194/os-6-789-2010 |
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Ocean Science |
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container_start_page |
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op_container_end_page |
797 |
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1801379737748111360 |
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ftmeteofrance:oai:HAL:hal-00543924v1 2024-06-09T07:48:09+00:00 Modeling the Nd isotopic composition in the North Atlantic basin using an eddy-permitting model Arsouze, T. Treguier, A. M. Peronne, S. Dutay, J.C. Lacan, F. Jeandel, C. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) GEOMAR LEGOS Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 2010 https://hal.science/hal-00543924 https://hal.science/hal-00543924/document https://hal.science/hal-00543924/file/os-6-789-2010.pdf https://doi.org/10.5194/os-6-789-2010 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/os-6-789-2010 hal-00543924 https://hal.science/hal-00543924 https://hal.science/hal-00543924/document https://hal.science/hal-00543924/file/os-6-789-2010.pdf doi:10.5194/os-6-789-2010 info:eu-repo/semantics/OpenAccess ISSN: 1812-0784 EISSN: 1812-0792 Ocean Science https://hal.science/hal-00543924 Ocean Science, 2010, 6 (3), pp.789 - 797. ⟨10.5194/os-6-789-2010⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2010 ftmeteofrance https://doi.org/10.5194/os-6-789-2010 2024-05-16T12:05:20Z International audience Boundary Exchange (BE – exchange of elementsbetween continental margins and the open ocean) hasbeen emphasized as a key process in the oceanic cycle ofneodymium (Nd) (Lacan and Jeandel, 2005a). Here, we usea regional eddy-permitting resolution Ocean General CirculationModel (1/4) of the North Atlantic basin to simulatethe distribution of the Nd isotopic composition, consideringBE as the only source. Results show good agreementwith the data, confirming previous results obtained using thesame parameterization of the source in a coarse resolutionglobal model (Arsouze et al., 2007), and therefore the majorcontrol played by the BE processes in the Nd cycle onthe regional scale. We quantified the exchange rate of theBE, and found that the time needed for the continental marginsto significantly imprint the chemical composition of thesurrounding seawater (further referred as characteristic exchangetime) is of the order of 0.2 years. However, thetimescale of the BE may be subject to large variations as avery short exchange time (a few days) is needed to reproducethe highly negative values of surface waters in the LabradorSea, whereas a longer one (up to 0.5 years) is required tosimulate the radiogenic influence of basaltic margins and distinguishthe negative isotopic signatures of North AtlanticDeep Water from the more radiogenic southern origin watermasses. This likely represents geographical variations inerosion fluxes and the subsequent particle load onto the continentalmargins. Although the parameterization of the BEis the same in both configurations of the model, the characteristicexchange time in the eddy-permitting configuration issignificantly lower than the previous evaluations using a lowresolution configuration (6 months to 10 years), but howeverin agreement with the available seawater Nd isotope data.This results highlights the importance of the model dynamicsin simulating the BE process Article in Journal/Newspaper North Atlantic Météo-France: HAL Avery ENVELOPE(-65.433,-65.433,-66.883,-66.883) Ocean Science 6 3 789 797 |