The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean
International audience Biological productivity in the Southern Ocean is limited by iron availability. Previous studies of iron supply have focused on mixed‐layer entrainment and diapycnal fluxes. However, the Southern Ocean is a region highly energetic mesoscale and submesoscale turbulence. Here we...
Published in: | Journal of Advances in Modeling Earth Systems |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Online Access: | https://hal.science/hal-02422867 https://hal.science/hal-02422867/document https://hal.science/hal-02422867/file/2019MS001805.pdf https://doi.org/10.1029/2019MS001805 |
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Open Polar |
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Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
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ftuniversailles |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Uchida, Takaya Balwada, Dhruv Abernathey, Ryan P. Mckinley, Galen Smith, K. Shafer Lévy, Marina The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience Biological productivity in the Southern Ocean is limited by iron availability. Previous studies of iron supply have focused on mixed‐layer entrainment and diapycnal fluxes. However, the Southern Ocean is a region highly energetic mesoscale and submesoscale turbulence. Here we investigate the role of eddies in supplying iron to the euphotic zone, using a flat‐bottom zonally re‐entrant model, configured to represent the Antarctic Circumpolar Current region, that is coupled to a biogeochemical model with a realistic seasonal cycle. Eddies are admitted or suppressed by changing the model's horizontal resolution. We utilize cross spectral analysis and the generalized Omega equation to temporally and spatially decompose the vertical transport attributable to mesoscale and submesoscale motions. Our results suggest that the mesoscale vertical fluxes provide a first‐order pathway for transporting iron across the mixing‐layer base, where diapycnal mixing is weak, and must be included in modeling the open‐Southern Ocean iron budget. |
author2 |
Department of Earth and Environmental Sciences New York Columbia University New York Lamont-Doherty Earth Observatory (LDEO) Center for Atmosphere Ocean Science NYU (CAOS) Courant Institute of Mathematical Sciences New York (CIMS) New York University New York (NYU) NYU System (NYU)-NYU System (NYU)-New York University New York (NYU) NYU System (NYU)-NYU System (NYU) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) NASA. Grant Number: NNX16AJ35GNSF. Grant Numbers: OCE-1553593, OCE-1740648 |
format |
Article in Journal/Newspaper |
author |
Uchida, Takaya Balwada, Dhruv Abernathey, Ryan P. Mckinley, Galen Smith, K. Shafer Lévy, Marina |
author_facet |
Uchida, Takaya Balwada, Dhruv Abernathey, Ryan P. Mckinley, Galen Smith, K. Shafer Lévy, Marina |
author_sort |
Uchida, Takaya |
title |
The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean |
title_short |
The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean |
title_full |
The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean |
title_fullStr |
The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean |
title_full_unstemmed |
The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean |
title_sort |
contribution of submesoscale over mesoscale eddy iron transport in the open southern ocean |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02422867 https://hal.science/hal-02422867/document https://hal.science/hal-02422867/file/2019MS001805.pdf https://doi.org/10.1029/2019MS001805 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
ISSN: 1942-2466 Journal of Advances in Modeling Earth Systems https://hal.science/hal-02422867 Journal of Advances in Modeling Earth Systems, 2019, 11 (12), pp.3934-3958. ⟨10.1029/2019MS001805⟩ |
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op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2019MS001805 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
11 |
container_issue |
12 |
container_start_page |
3934 |
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3958 |
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spelling |
ftuniversailles:oai:HAL:hal-02422867v1 2024-05-19T07:30:30+00:00 The Contribution of Submesoscale over Mesoscale Eddy Iron Transport in the Open Southern Ocean Uchida, Takaya Balwada, Dhruv Abernathey, Ryan P. Mckinley, Galen Smith, K. Shafer Lévy, Marina Department of Earth and Environmental Sciences New York Columbia University New York Lamont-Doherty Earth Observatory (LDEO) Center for Atmosphere Ocean Science NYU (CAOS) Courant Institute of Mathematical Sciences New York (CIMS) New York University New York (NYU) NYU System (NYU)-NYU System (NYU)-New York University New York (NYU) NYU System (NYU)-NYU System (NYU) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) NASA. Grant Number: NNX16AJ35GNSF. Grant Numbers: OCE-1553593, OCE-1740648 2019-12 https://hal.science/hal-02422867 https://hal.science/hal-02422867/document https://hal.science/hal-02422867/file/2019MS001805.pdf https://doi.org/10.1029/2019MS001805 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2019MS001805 hal-02422867 https://hal.science/hal-02422867 https://hal.science/hal-02422867/document https://hal.science/hal-02422867/file/2019MS001805.pdf doi:10.1029/2019MS001805 WOS: 000501189500001 info:eu-repo/semantics/OpenAccess ISSN: 1942-2466 Journal of Advances in Modeling Earth Systems https://hal.science/hal-02422867 Journal of Advances in Modeling Earth Systems, 2019, 11 (12), pp.3934-3958. ⟨10.1029/2019MS001805⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2019 ftuniversailles https://doi.org/10.1029/2019MS001805 2024-04-25T00:28:17Z International audience Biological productivity in the Southern Ocean is limited by iron availability. Previous studies of iron supply have focused on mixed‐layer entrainment and diapycnal fluxes. However, the Southern Ocean is a region highly energetic mesoscale and submesoscale turbulence. Here we investigate the role of eddies in supplying iron to the euphotic zone, using a flat‐bottom zonally re‐entrant model, configured to represent the Antarctic Circumpolar Current region, that is coupled to a biogeochemical model with a realistic seasonal cycle. Eddies are admitted or suppressed by changing the model's horizontal resolution. We utilize cross spectral analysis and the generalized Omega equation to temporally and spatially decompose the vertical transport attributable to mesoscale and submesoscale motions. Our results suggest that the mesoscale vertical fluxes provide a first‐order pathway for transporting iron across the mixing‐layer base, where diapycnal mixing is weak, and must be included in modeling the open‐Southern Ocean iron budget. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Journal of Advances in Modeling Earth Systems 11 12 3934 3958 |