High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre
The Southern Ocean (SO) plays a key role in modulating atmospheric CO 2 via physical and biological processes. However, over much of the SO, biological activity is iron-limited. New in situ data from the Antarctic zone south of Africa in a region centered at ~20°E-25°E reveal a previously overlooked...
Published in: | Global Biogeochemical Cycles |
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/20293/ https://doi.org/10.1029/2009GB003657 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:20293 2023-05-15T13:52:43+02:00 High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre Geibert, W Assmy, P Bakker, DCE Hanfland, C Hoppema, M Pichevin, L Schroder, M Schwarz, JN Stimac, I Usbeck, U Webb, A 2010 https://ueaeprints.uea.ac.uk/id/eprint/20293/ https://doi.org/10.1029/2009GB003657 unknown Geibert, W, Assmy, P, Bakker, DCE, Hanfland, C, Hoppema, M, Pichevin, L, Schroder, M, Schwarz, JN, Stimac, I, Usbeck, U and Webb, A (2010) High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre. Global Biogeochemical Cycles, 24 (3). ISSN 1944-9224 doi:10.1029/2009GB003657 Article PeerReviewed 2010 ftuniveastangl https://doi.org/10.1029/2009GB003657 2023-03-23T23:31:25Z The Southern Ocean (SO) plays a key role in modulating atmospheric CO 2 via physical and biological processes. However, over much of the SO, biological activity is iron-limited. New in situ data from the Antarctic zone south of Africa in a region centered at ~20°E-25°E reveal a previously overlooked region of high primary production, comparable in size to the northwest African upwelling region. Here, sea ice together with enclosed icebergs is channeled by prevailing winds to the eastern boundary of the Weddell Gyre, where a sharp transition to warmer waters causes melting. This cumulative melting provides a steady source of iron, fuelling an intense phytoplankton bloom that is not fully captured by monthly satellite production estimates. These findings imply that future changes in sea-ice cover and dynamics could have a significant effect on carbon sequestration in the SO. Article in Journal/Newspaper Antarc* Antarctic Iceberg* Sea ice Southern Ocean University of East Anglia: UEA Digital Repository Antarctic Southern Ocean The Antarctic Weddell Global Biogeochemical Cycles 24 3 n/a n/a |
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Open Polar |
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University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
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description |
The Southern Ocean (SO) plays a key role in modulating atmospheric CO 2 via physical and biological processes. However, over much of the SO, biological activity is iron-limited. New in situ data from the Antarctic zone south of Africa in a region centered at ~20°E-25°E reveal a previously overlooked region of high primary production, comparable in size to the northwest African upwelling region. Here, sea ice together with enclosed icebergs is channeled by prevailing winds to the eastern boundary of the Weddell Gyre, where a sharp transition to warmer waters causes melting. This cumulative melting provides a steady source of iron, fuelling an intense phytoplankton bloom that is not fully captured by monthly satellite production estimates. These findings imply that future changes in sea-ice cover and dynamics could have a significant effect on carbon sequestration in the SO. |
format |
Article in Journal/Newspaper |
author |
Geibert, W Assmy, P Bakker, DCE Hanfland, C Hoppema, M Pichevin, L Schroder, M Schwarz, JN Stimac, I Usbeck, U Webb, A |
spellingShingle |
Geibert, W Assmy, P Bakker, DCE Hanfland, C Hoppema, M Pichevin, L Schroder, M Schwarz, JN Stimac, I Usbeck, U Webb, A High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre |
author_facet |
Geibert, W Assmy, P Bakker, DCE Hanfland, C Hoppema, M Pichevin, L Schroder, M Schwarz, JN Stimac, I Usbeck, U Webb, A |
author_sort |
Geibert, W |
title |
High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre |
title_short |
High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre |
title_full |
High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre |
title_fullStr |
High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre |
title_full_unstemmed |
High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre |
title_sort |
high productivity in an ice melting hot spot at the eastern boundary of the weddell gyre |
publishDate |
2010 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/20293/ https://doi.org/10.1029/2009GB003657 |
geographic |
Antarctic Southern Ocean The Antarctic Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell |
genre |
Antarc* Antarctic Iceberg* Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Iceberg* Sea ice Southern Ocean |
op_relation |
Geibert, W, Assmy, P, Bakker, DCE, Hanfland, C, Hoppema, M, Pichevin, L, Schroder, M, Schwarz, JN, Stimac, I, Usbeck, U and Webb, A (2010) High productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre. Global Biogeochemical Cycles, 24 (3). ISSN 1944-9224 doi:10.1029/2009GB003657 |
op_doi |
https://doi.org/10.1029/2009GB003657 |
container_title |
Global Biogeochemical Cycles |
container_volume |
24 |
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3 |
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_version_ |
1766257187692216320 |