Iron supply pathways between the surface and subsurface waters of the Southern Ocean: From winter entrainment to summer storms
International audience Dissolved iron (DFe) plays an immeasurable role in shaping the biogeochemical processes of the open‐ocean Southern Ocean. However, due to observational constraints iron supply pathways remain poorly understood. Using an idealized eddy‐resolving physical‐biogeochemical model re...
Published in: | Geophysical Research Letters |
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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-02422875 https://hal.science/hal-02422875/document https://hal.science/hal-02422875/file/Nicholson_FINAL_GRL2019_R2_CLEAN_FIGURES.pdf https://doi.org/10.1029/2019GL084657 |
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ftceafr:oai:HAL:hal-02422875v1 |
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openpolar |
institution |
Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
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] Nicholson, Sarah Lévy, Marina Jouanno, Julien Capet, Xavier Swart, Sebastiaan Monteiro, Pedro M. S. Iron supply pathways between the surface and subsurface waters of the Southern Ocean: From winter entrainment to summer storms |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience Dissolved iron (DFe) plays an immeasurable role in shaping the biogeochemical processes of the open‐ocean Southern Ocean. However, due to observational constraints iron supply pathways remain poorly understood. Using an idealized eddy‐resolving physical‐biogeochemical model representing a turbulent sector of the Southern Ocean with seasonal buoyancy forcing and zonal winds overlaid by storms, we quantify the importance of a range of subsurface and surface iron supply mechanisms. The main physical supply pathways to the surface layer are via eddy advection and winter convective mixing in equal proportions. The associated subsurface loss of DFe is restocked via net remineralization (75%) and eddy advection (25%). Summer storms resulted in weak DFe supplies relative to the seasonal supplies (<7.6%). However, in situations of deep summer mixed layers and when interacting with underlying ocean fronts, summer storms resulted in enhanced diffusive and advective DFe supplies and raised summer primary production by 20% for several days. |
author2 |
Southern Ocean Carbon and Climate Observatory (SOCCO) Council for Scientific and Industrial Research Pretoria (CSIR) 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) 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) Department of Marine Sciences Gothenburg Göteborgs Universitet = University of Gothenburg (GU) Department of Oceanography Cape Town University of Cape Town Wallenberg Academy Fellowship. Grant Number: WAF 2015.0186CNES‐ CLIMCOLOR projectYoung Researchers Establishment Fund. Grant Number: YREF 2019 0000007361 ANR-16-CE01-0014,SOBUMS,Comprendre la réponse du cycle du carbone dans l'océan austral au stress climatique(2016) European Project: 317699,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IRSES,SOCCLI(2012) |
format |
Article in Journal/Newspaper |
author |
Nicholson, Sarah Lévy, Marina Jouanno, Julien Capet, Xavier Swart, Sebastiaan Monteiro, Pedro M. S. |
author_facet |
Nicholson, Sarah Lévy, Marina Jouanno, Julien Capet, Xavier Swart, Sebastiaan Monteiro, Pedro M. S. |
author_sort |
Nicholson, Sarah |
title |
Iron supply pathways between the surface and subsurface waters of the Southern Ocean: From winter entrainment to summer storms |
title_short |
Iron supply pathways between the surface and subsurface waters of the Southern Ocean: From winter entrainment to summer storms |
title_full |
Iron supply pathways between the surface and subsurface waters of the Southern Ocean: From winter entrainment to summer storms |
title_fullStr |
Iron supply pathways between the surface and subsurface waters of the Southern Ocean: From winter entrainment to summer storms |
title_full_unstemmed |
Iron supply pathways between the surface and subsurface waters of the Southern Ocean: From winter entrainment to summer storms |
title_sort |
iron supply pathways between the surface and subsurface waters of the southern ocean: from winter entrainment to summer storms |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02422875 https://hal.science/hal-02422875/document https://hal.science/hal-02422875/file/Nicholson_FINAL_GRL2019_R2_CLEAN_FIGURES.pdf https://doi.org/10.1029/2019GL084657 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-02422875 Geophysical Research Letters, 2019, 46 (24), pp.14567-14575. ⟨10.1029/2019GL084657⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2019GL084657 info:eu-repo/grantAgreement/EC/FP7/317699/EU/The role of Southern Ocean Carbon cycle under CLImate change/SOCCLI hal-02422875 https://hal.science/hal-02422875 https://hal.science/hal-02422875/document https://hal.science/hal-02422875/file/Nicholson_FINAL_GRL2019_R2_CLEAN_FIGURES.pdf doi:10.1029/2019GL084657 IRD: fdi:010077431 WOS: 000502929400001 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2019GL084657 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
24 |
container_start_page |
14567 |
op_container_end_page |
14575 |
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1810481101700857856 |
spelling |
ftceafr:oai:HAL:hal-02422875v1 2024-09-15T18:37:01+00:00 Iron supply pathways between the surface and subsurface waters of the Southern Ocean: From winter entrainment to summer storms Nicholson, Sarah Lévy, Marina Jouanno, Julien Capet, Xavier Swart, Sebastiaan Monteiro, Pedro M. S. Southern Ocean Carbon and Climate Observatory (SOCCO) Council for Scientific and Industrial Research Pretoria (CSIR) 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) 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) Department of Marine Sciences Gothenburg Göteborgs Universitet = University of Gothenburg (GU) Department of Oceanography Cape Town University of Cape Town Wallenberg Academy Fellowship. Grant Number: WAF 2015.0186CNES‐ CLIMCOLOR projectYoung Researchers Establishment Fund. Grant Number: YREF 2019 0000007361 ANR-16-CE01-0014,SOBUMS,Comprendre la réponse du cycle du carbone dans l'océan austral au stress climatique(2016) European Project: 317699,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IRSES,SOCCLI(2012) 2019-12-28 https://hal.science/hal-02422875 https://hal.science/hal-02422875/document https://hal.science/hal-02422875/file/Nicholson_FINAL_GRL2019_R2_CLEAN_FIGURES.pdf https://doi.org/10.1029/2019GL084657 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2019GL084657 info:eu-repo/grantAgreement/EC/FP7/317699/EU/The role of Southern Ocean Carbon cycle under CLImate change/SOCCLI hal-02422875 https://hal.science/hal-02422875 https://hal.science/hal-02422875/document https://hal.science/hal-02422875/file/Nicholson_FINAL_GRL2019_R2_CLEAN_FIGURES.pdf doi:10.1029/2019GL084657 IRD: fdi:010077431 WOS: 000502929400001 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-02422875 Geophysical Research Letters, 2019, 46 (24), pp.14567-14575. ⟨10.1029/2019GL084657⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2019 ftceafr https://doi.org/10.1029/2019GL084657 2024-07-22T13:17:07Z International audience Dissolved iron (DFe) plays an immeasurable role in shaping the biogeochemical processes of the open‐ocean Southern Ocean. However, due to observational constraints iron supply pathways remain poorly understood. Using an idealized eddy‐resolving physical‐biogeochemical model representing a turbulent sector of the Southern Ocean with seasonal buoyancy forcing and zonal winds overlaid by storms, we quantify the importance of a range of subsurface and surface iron supply mechanisms. The main physical supply pathways to the surface layer are via eddy advection and winter convective mixing in equal proportions. The associated subsurface loss of DFe is restocked via net remineralization (75%) and eddy advection (25%). Summer storms resulted in weak DFe supplies relative to the seasonal supplies (<7.6%). However, in situations of deep summer mixed layers and when interacting with underlying ocean fronts, summer storms resulted in enhanced diffusive and advective DFe supplies and raised summer primary production by 20% for several days. Article in Journal/Newspaper Southern Ocean HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Geophysical Research Letters 46 24 14567 14575 |