Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study
An upgraded version of the biogeochemical model SWAMCO is coupled to the ocean-sea-ice model NEMO-LIM to explore processes governing the spatial distribution of the iron supply to phytoplankton in the Southern Ocean. The 3-D NEMO-LIM-SWAMCO model is implemented in the ocean domain south of latitude...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/56516 2023-05-15T13:42:28+02:00 Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study Lancelot, Christiane de Montety, Anne Goosse, Hugues Becquevort, Sylvie Schoemann, Véronique Pasquer, Bénédicte Vancoppenole, M. 2009-05-01 2 full-text file(s): application/pdf | application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/56516 https://dipot.ulb.ac.be/dspace/bitstream/2013/56516/1/2009-bg-6-1-44.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/56516/4/doi_32291.pdf en eng uri/info:doi/10.5194/bgd-6-4919-2009 https://dipot.ulb.ac.be/dspace/bitstream/2013/56516/1/2009-bg-6-1-44.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/56516/4/doi_32291.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/56516 2 full-text file(s): info:eu-repo/semantics/closedAccess | info:eu-repo/semantics/openAccess Biogeosciences discussions, 6 (3 Océanographie physique et chimique Sciences de la terre et du cosmos Phytoplanctonologie iron spatial distribution model southern ocean phytoplankton info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2009 ftunivbruxelles 2022-06-12T20:45:16Z An upgraded version of the biogeochemical model SWAMCO is coupled to the ocean-sea-ice model NEMO-LIM to explore processes governing the spatial distribution of the iron supply to phytoplankton in the Southern Ocean. The 3-D NEMO-LIM-SWAMCO model is implemented in the ocean domain south of latitude 30° S and runs are performed over September 1989–December 2000. Model scenarios include potential iron sources (atmospheric deposition, iceberg calving and continental sediments) as well as iron storage within sea ice, all formulated based on a literature review. When all these processes are included, the simulated iron profiles and phytoplankton bloom distributions show satisfactory agreement with observations. Analysis of simulations points to the key role played by continental sediments as a primary source for iron. Iceberg calving and melting contribute by up to 25% of Chl a simulated in areas under influence of icebergs while atmospheric deposition has little effect at high latitudes. Activating sea ice-ocean iron exchanges redistribute iron geographically. Stored in the ice during winter formation, iron is then transported due to ice motion and is released and made available to phytoplankton during summer melt, in the vicinity of the marginal ice zones. Transient iron storage and transport associated with sea ice dynamics stimulate summer phytoplankton blooming (up to 3 mg Chl a m−3) in the Weddell Sea and off East Antarctica but not in the Ross, Bellingshausen and Amundsen Seas. This contrasted feature results from the simulated variable content of iron in sea ice and release of melting ice showing higher ice-ocean iron fluxes in the continental shelves of the Weddell and Ross Seas than in the Eastern Weddell Sea and the Bellingshausen-Amundsen Seas. This study confirms that iron sources and transport in the Southern Ocean likely provide important mechanisms in the geographical development of phytoplankton blooms and associated ecosystems. info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctica East Antarctica Sea ice Southern Ocean Weddell Sea DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) East Antarctica Southern Ocean Weddell Weddell Sea |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Océanographie physique et chimique Sciences de la terre et du cosmos Phytoplanctonologie iron spatial distribution model southern ocean phytoplankton |
spellingShingle |
Océanographie physique et chimique Sciences de la terre et du cosmos Phytoplanctonologie iron spatial distribution model southern ocean phytoplankton Lancelot, Christiane de Montety, Anne Goosse, Hugues Becquevort, Sylvie Schoemann, Véronique Pasquer, Bénédicte Vancoppenole, M. Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study |
topic_facet |
Océanographie physique et chimique Sciences de la terre et du cosmos Phytoplanctonologie iron spatial distribution model southern ocean phytoplankton |
description |
An upgraded version of the biogeochemical model SWAMCO is coupled to the ocean-sea-ice model NEMO-LIM to explore processes governing the spatial distribution of the iron supply to phytoplankton in the Southern Ocean. The 3-D NEMO-LIM-SWAMCO model is implemented in the ocean domain south of latitude 30° S and runs are performed over September 1989–December 2000. Model scenarios include potential iron sources (atmospheric deposition, iceberg calving and continental sediments) as well as iron storage within sea ice, all formulated based on a literature review. When all these processes are included, the simulated iron profiles and phytoplankton bloom distributions show satisfactory agreement with observations. Analysis of simulations points to the key role played by continental sediments as a primary source for iron. Iceberg calving and melting contribute by up to 25% of Chl a simulated in areas under influence of icebergs while atmospheric deposition has little effect at high latitudes. Activating sea ice-ocean iron exchanges redistribute iron geographically. Stored in the ice during winter formation, iron is then transported due to ice motion and is released and made available to phytoplankton during summer melt, in the vicinity of the marginal ice zones. Transient iron storage and transport associated with sea ice dynamics stimulate summer phytoplankton blooming (up to 3 mg Chl a m−3) in the Weddell Sea and off East Antarctica but not in the Ross, Bellingshausen and Amundsen Seas. This contrasted feature results from the simulated variable content of iron in sea ice and release of melting ice showing higher ice-ocean iron fluxes in the continental shelves of the Weddell and Ross Seas than in the Eastern Weddell Sea and the Bellingshausen-Amundsen Seas. This study confirms that iron sources and transport in the Southern Ocean likely provide important mechanisms in the geographical development of phytoplankton blooms and associated ecosystems. info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Lancelot, Christiane de Montety, Anne Goosse, Hugues Becquevort, Sylvie Schoemann, Véronique Pasquer, Bénédicte Vancoppenole, M. |
author_facet |
Lancelot, Christiane de Montety, Anne Goosse, Hugues Becquevort, Sylvie Schoemann, Véronique Pasquer, Bénédicte Vancoppenole, M. |
author_sort |
Lancelot, Christiane |
title |
Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study |
title_short |
Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study |
title_full |
Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study |
title_fullStr |
Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study |
title_full_unstemmed |
Spatial distribution of the iron supply to phytoplankton in the Southern Ocean: a model study |
title_sort |
spatial distribution of the iron supply to phytoplankton in the southern ocean: a model study |
publishDate |
2009 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/56516 https://dipot.ulb.ac.be/dspace/bitstream/2013/56516/1/2009-bg-6-1-44.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/56516/4/doi_32291.pdf |
geographic |
East Antarctica Southern Ocean Weddell Weddell Sea |
geographic_facet |
East Antarctica Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctica East Antarctica Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctica East Antarctica Sea ice Southern Ocean Weddell Sea |
op_source |
Biogeosciences discussions, 6 (3 |
op_relation |
uri/info:doi/10.5194/bgd-6-4919-2009 https://dipot.ulb.ac.be/dspace/bitstream/2013/56516/1/2009-bg-6-1-44.pdf https://dipot.ulb.ac.be/dspace/bitstream/2013/56516/4/doi_32291.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/56516 |
op_rights |
2 full-text file(s): info:eu-repo/semantics/closedAccess | info:eu-repo/semantics/openAccess |
_version_ |
1766168319965003776 |