Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation
The Southern Ocean plays a prominent role in the Earth’s climate and carbon cycle. Changes in the Southern Ocean circulation may have regulated the release of CO2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of this deglacial CO2 rele...
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2013
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Online Access: | https://epic.awi.de/id/eprint/34917/ https://epic.awi.de/id/eprint/34917/1/Sianietal2013.pdf http://www.nature.com/ncomms/2013/131108/ncomms3758/full/ncomms3758.html https://hdl.handle.net/10013/epic.43069 https://hdl.handle.net/10013/epic.43069.d001 |
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ftawi:oai:epic.awi.de:34917 2024-09-15T17:45:31+00:00 Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation Siani, Giuseppe Michel, Elisabeth De Pol-Holz, Ricardo DeVries, Tim Lamy, Frank Carel, Mélanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna 2013-11-08 application/pdf https://epic.awi.de/id/eprint/34917/ https://epic.awi.de/id/eprint/34917/1/Sianietal2013.pdf http://www.nature.com/ncomms/2013/131108/ncomms3758/full/ncomms3758.html https://hdl.handle.net/10013/epic.43069 https://hdl.handle.net/10013/epic.43069.d001 unknown Macmillan Publishers https://epic.awi.de/id/eprint/34917/1/Sianietal2013.pdf https://hdl.handle.net/10013/epic.43069.d001 Siani, G. , Michel, E. , De Pol-Holz, R. , DeVries, T. , Lamy, F. orcid:0000-0001-5952-1765 , Carel, M. , Isguder, G. , Dewilde, F. and Lourantou, A. (2013) Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation , Nature Communications, 4 (2758), pp. 1-9 . doi:10.1038/ncomms3758 <https://doi.org/10.1038/ncomms3758> , hdl:10013/epic.43069 EPIC3Nature Communications, Macmillan Publishers, 4(2758), pp. 1-9, ISSN: 2041-1723 Article isiRev 2013 ftawi https://doi.org/10.1038/ncomms3758 2024-06-24T04:08:32Z The Southern Ocean plays a prominent role in the Earth’s climate and carbon cycle. Changes in the Southern Ocean circulation may have regulated the release of CO2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of this deglacial CO2 release are still under debate. Here we present measurements of deglacial surface reservoir 14C age changes in the eastern Pacific sector of the Southern Ocean, obtained by 14C dating of tephra deposited over the marine and terrestrial regions. These results, along with records of foraminifera benthic–planktic 14C age and δ13C difference, provide evidence for three periods of enhanced upwelling in the Southern Ocean during the last deglaciation, supporting the hypothesis that Southern Ocean upwelling contributed to the deglacial rise in atmospheric CO2. These independently dated marine records suggest synchronous changes in the Southern Ocean circulation and Antarctic climate during the last deglaciation. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Nature Communications 4 1 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
The Southern Ocean plays a prominent role in the Earth’s climate and carbon cycle. Changes in the Southern Ocean circulation may have regulated the release of CO2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of this deglacial CO2 release are still under debate. Here we present measurements of deglacial surface reservoir 14C age changes in the eastern Pacific sector of the Southern Ocean, obtained by 14C dating of tephra deposited over the marine and terrestrial regions. These results, along with records of foraminifera benthic–planktic 14C age and δ13C difference, provide evidence for three periods of enhanced upwelling in the Southern Ocean during the last deglaciation, supporting the hypothesis that Southern Ocean upwelling contributed to the deglacial rise in atmospheric CO2. These independently dated marine records suggest synchronous changes in the Southern Ocean circulation and Antarctic climate during the last deglaciation. |
format |
Article in Journal/Newspaper |
author |
Siani, Giuseppe Michel, Elisabeth De Pol-Holz, Ricardo DeVries, Tim Lamy, Frank Carel, Mélanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna |
spellingShingle |
Siani, Giuseppe Michel, Elisabeth De Pol-Holz, Ricardo DeVries, Tim Lamy, Frank Carel, Mélanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
author_facet |
Siani, Giuseppe Michel, Elisabeth De Pol-Holz, Ricardo DeVries, Tim Lamy, Frank Carel, Mélanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna |
author_sort |
Siani, Giuseppe |
title |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_short |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_full |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_fullStr |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_full_unstemmed |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_sort |
carbon isotope records reveal precise timing of enhanced southern ocean upwelling during the last deglaciation |
publisher |
Macmillan Publishers |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/34917/ https://epic.awi.de/id/eprint/34917/1/Sianietal2013.pdf http://www.nature.com/ncomms/2013/131108/ncomms3758/full/ncomms3758.html https://hdl.handle.net/10013/epic.43069 https://hdl.handle.net/10013/epic.43069.d001 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
EPIC3Nature Communications, Macmillan Publishers, 4(2758), pp. 1-9, ISSN: 2041-1723 |
op_relation |
https://epic.awi.de/id/eprint/34917/1/Sianietal2013.pdf https://hdl.handle.net/10013/epic.43069.d001 Siani, G. , Michel, E. , De Pol-Holz, R. , DeVries, T. , Lamy, F. orcid:0000-0001-5952-1765 , Carel, M. , Isguder, G. , Dewilde, F. and Lourantou, A. (2013) Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation , Nature Communications, 4 (2758), pp. 1-9 . doi:10.1038/ncomms3758 <https://doi.org/10.1038/ncomms3758> , hdl:10013/epic.43069 |
op_doi |
https://doi.org/10.1038/ncomms3758 |
container_title |
Nature Communications |
container_volume |
4 |
container_issue |
1 |
_version_ |
1810493368682151936 |