Evaluating the importance of atmospheric and sedimentary iron sources to Southern Ocean biogeochemistry.
International audience The predominant iron sources to the Southern Ocean (SO) are atmospheric deposition and sediment supply from the continental margin and their relative importance in governing SO carbon export remains a subject of great debate. Here we report the results of simulations conducted...
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
2009
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Online Access: | https://hal.science/hal-00413596 https://hal.science/hal-00413596/document https://hal.science/hal-00413596/file/2009GL038914.pdf https://doi.org/10.1029/2009GL038914 |
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ftmuseumnhn:oai:HAL:hal-00413596v1 |
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openpolar |
institution |
Open Polar |
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Muséum National d'Histoire Naturelle (MNHM): HAL |
op_collection_id |
ftmuseumnhn |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Tagliabue, Alessandro Bopp, Laurent Aumont, Olivier Evaluating the importance of atmospheric and sedimentary iron sources to Southern Ocean biogeochemistry. |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The predominant iron sources to the Southern Ocean (SO) are atmospheric deposition and sediment supply from the continental margin and their relative importance in governing SO carbon export remains a subject of great debate. Here we report the results of simulations conducted with an ocean general circulation and biogeochemistry model (OGCBM) to quantify the importance of each source at different spatial scales at quasi-equilibrium. Overall, we find sediment derived iron is more important than dust derived iron in sustaining SO export production (by 1.4 to 9 times). Although dust iron is important in certain geographic sectors of the SO, this largely depends on the dust model employed. Apparent geographical correlations between dust deposition and export production can be misleading, since sediment iron can be transported to similar regions. Future generation OGCBMs must better represent spatial variability in deposition fluxes and iron solubility from dust, as well as the poorly constrained, yet regionally important, sediment source. |
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 d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 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) |
format |
Article in Journal/Newspaper |
author |
Tagliabue, Alessandro Bopp, Laurent Aumont, Olivier |
author_facet |
Tagliabue, Alessandro Bopp, Laurent Aumont, Olivier |
author_sort |
Tagliabue, Alessandro |
title |
Evaluating the importance of atmospheric and sedimentary iron sources to Southern Ocean biogeochemistry. |
title_short |
Evaluating the importance of atmospheric and sedimentary iron sources to Southern Ocean biogeochemistry. |
title_full |
Evaluating the importance of atmospheric and sedimentary iron sources to Southern Ocean biogeochemistry. |
title_fullStr |
Evaluating the importance of atmospheric and sedimentary iron sources to Southern Ocean biogeochemistry. |
title_full_unstemmed |
Evaluating the importance of atmospheric and sedimentary iron sources to Southern Ocean biogeochemistry. |
title_sort |
evaluating the importance of atmospheric and sedimentary iron sources to southern ocean biogeochemistry. |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-00413596 https://hal.science/hal-00413596/document https://hal.science/hal-00413596/file/2009GL038914.pdf https://doi.org/10.1029/2009GL038914 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00413596 Geophysical Research Letters, 2009, 36, pp.L13601. ⟨10.1029/2009GL038914⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2009GL038914 hal-00413596 https://hal.science/hal-00413596 https://hal.science/hal-00413596/document https://hal.science/hal-00413596/file/2009GL038914.pdf doi:10.1029/2009GL038914 IRD: PAR00003862 WOS: 000267639800003 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2009GL038914 |
container_title |
Geophysical Research Letters |
container_volume |
36 |
container_issue |
13 |
_version_ |
1801382494925225984 |
spelling |
ftmuseumnhn:oai:HAL:hal-00413596v1 2024-06-09T07:49:43+00:00 Evaluating the importance of atmospheric and sedimentary iron sources to Southern Ocean biogeochemistry. Tagliabue, Alessandro Bopp, Laurent Aumont, Olivier 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 d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 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) 2009 https://hal.science/hal-00413596 https://hal.science/hal-00413596/document https://hal.science/hal-00413596/file/2009GL038914.pdf https://doi.org/10.1029/2009GL038914 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2009GL038914 hal-00413596 https://hal.science/hal-00413596 https://hal.science/hal-00413596/document https://hal.science/hal-00413596/file/2009GL038914.pdf doi:10.1029/2009GL038914 IRD: PAR00003862 WOS: 000267639800003 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00413596 Geophysical Research Letters, 2009, 36, pp.L13601. ⟨10.1029/2009GL038914⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2009 ftmuseumnhn https://doi.org/10.1029/2009GL038914 2024-05-16T10:21:45Z International audience The predominant iron sources to the Southern Ocean (SO) are atmospheric deposition and sediment supply from the continental margin and their relative importance in governing SO carbon export remains a subject of great debate. Here we report the results of simulations conducted with an ocean general circulation and biogeochemistry model (OGCBM) to quantify the importance of each source at different spatial scales at quasi-equilibrium. Overall, we find sediment derived iron is more important than dust derived iron in sustaining SO export production (by 1.4 to 9 times). Although dust iron is important in certain geographic sectors of the SO, this largely depends on the dust model employed. Apparent geographical correlations between dust deposition and export production can be misleading, since sediment iron can be transported to similar regions. Future generation OGCBMs must better represent spatial variability in deposition fluxes and iron solubility from dust, as well as the poorly constrained, yet regionally important, sediment source. Article in Journal/Newspaper Southern Ocean Muséum National d'Histoire Naturelle (MNHM): HAL Southern Ocean Geophysical Research Letters 36 13 |