Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka
Ice core data have shown that atmospheric CO 2 concentrations during interglacials were lower before the Mid-Brunhes Event (MBE, ~430 ka), than after the MBE by around 30 ppm. To explain such a difference, it has been hypothesized that increased bottom water formation around Antarctica or reduced At...
Published in: | Paleoceanography and Paleoclimatology |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://research.vu.nl/en/publications/47b480fa-37c6-443b-9086-e00752cdf3fe https://doi.org/10.1029/2019PA003776 https://hdl.handle.net/1871.1/47b480fa-37c6-443b-9086-e00752cdf3fe https://research.vu.nl/ws/files/121654417/2019PA003776_Carbon_13_Isotopes_Reveal_Limited_Ocean_Circulation_Changes_Between_Interglacials_of_the_Last_800_ka.pdf http://www.scopus.com/inward/record.url?scp=85085316078&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85085316078&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/47b480fa-37c6-443b-9086-e00752cdf3fe 2024-10-20T14:04:43+00:00 Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka Bouttes, N. Vazquez Riveiros, N. Govin, A. Swingedouw, D. Sanchez-Goni, M. F. Crosta, X. Roche, D. M. 2020-05 application/pdf https://research.vu.nl/en/publications/47b480fa-37c6-443b-9086-e00752cdf3fe https://doi.org/10.1029/2019PA003776 https://hdl.handle.net/1871.1/47b480fa-37c6-443b-9086-e00752cdf3fe https://research.vu.nl/ws/files/121654417/2019PA003776_Carbon_13_Isotopes_Reveal_Limited_Ocean_Circulation_Changes_Between_Interglacials_of_the_Last_800_ka.pdf http://www.scopus.com/inward/record.url?scp=85085316078&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85085316078&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Bouttes , N , Vazquez Riveiros , N , Govin , A , Swingedouw , D , Sanchez-Goni , M F , Crosta , X & Roche , D M 2020 , ' Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka ' , Paleoceanography and Paleoclimatology , vol. 35 , no. 5 , e2019PA003776 , pp. 1-18 . https://doi.org/10.1029/2019PA003776 carbon 13 interglacial modeling /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2020 ftvuamstcris https://doi.org/10.1029/2019PA003776 2024-09-26T14:52:10Z Ice core data have shown that atmospheric CO 2 concentrations during interglacials were lower before the Mid-Brunhes Event (MBE, ~430 ka), than after the MBE by around 30 ppm. To explain such a difference, it has been hypothesized that increased bottom water formation around Antarctica or reduced Atlantic Meridional Overturning Circulation (AMOC) could have led to greater oceanic carbon storage before the MBE, resulting in less carbon in the atmosphere. However, only few data on possible changes in interglacial ocean circulation across the MBE have been compiled, hampering model-data comparison. Here we present a new global compilation of benthic foraminifera carbon isotopic (δ 13 C) records from 31 marine sediment cores covering the last 800 ka, with the aim of evaluating possible changes of interglacial ocean circulation across the MBE. We show that a small systematic difference between pre- and post-MBE interglacial δ 13 C is observed. In pre-MBE interglacials, northern source waters tend to have slightly higher δ 13 C values and penetrate deeper, which could be linked to an increased northern sourced water formation or a decreased southern sourced water formation. Numerical model simulations tend to support the role of abyssal water formation around Antarctica: Decreased convection there associated with increased sinking of dense water along the continental slopes results in increased δ 13 C values in the Atlantic in agreement with pre-MBE interglacial data. It also yields reduced atmospheric CO 2 as in pre-MBE records, despite a smaller simulated amplitude change compared to data, highlighting the need for other processes to explain the MBE transition. Article in Journal/Newspaper Antarc* Antarctica ice core Vrije Universiteit Amsterdam (VU): Research Portal Paleoceanography and Paleoclimatology 35 5 |
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Open Polar |
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Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
carbon 13 interglacial modeling /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
carbon 13 interglacial modeling /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Bouttes, N. Vazquez Riveiros, N. Govin, A. Swingedouw, D. Sanchez-Goni, M. F. Crosta, X. Roche, D. M. Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka |
topic_facet |
carbon 13 interglacial modeling /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Ice core data have shown that atmospheric CO 2 concentrations during interglacials were lower before the Mid-Brunhes Event (MBE, ~430 ka), than after the MBE by around 30 ppm. To explain such a difference, it has been hypothesized that increased bottom water formation around Antarctica or reduced Atlantic Meridional Overturning Circulation (AMOC) could have led to greater oceanic carbon storage before the MBE, resulting in less carbon in the atmosphere. However, only few data on possible changes in interglacial ocean circulation across the MBE have been compiled, hampering model-data comparison. Here we present a new global compilation of benthic foraminifera carbon isotopic (δ 13 C) records from 31 marine sediment cores covering the last 800 ka, with the aim of evaluating possible changes of interglacial ocean circulation across the MBE. We show that a small systematic difference between pre- and post-MBE interglacial δ 13 C is observed. In pre-MBE interglacials, northern source waters tend to have slightly higher δ 13 C values and penetrate deeper, which could be linked to an increased northern sourced water formation or a decreased southern sourced water formation. Numerical model simulations tend to support the role of abyssal water formation around Antarctica: Decreased convection there associated with increased sinking of dense water along the continental slopes results in increased δ 13 C values in the Atlantic in agreement with pre-MBE interglacial data. It also yields reduced atmospheric CO 2 as in pre-MBE records, despite a smaller simulated amplitude change compared to data, highlighting the need for other processes to explain the MBE transition. |
format |
Article in Journal/Newspaper |
author |
Bouttes, N. Vazquez Riveiros, N. Govin, A. Swingedouw, D. Sanchez-Goni, M. F. Crosta, X. Roche, D. M. |
author_facet |
Bouttes, N. Vazquez Riveiros, N. Govin, A. Swingedouw, D. Sanchez-Goni, M. F. Crosta, X. Roche, D. M. |
author_sort |
Bouttes, N. |
title |
Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka |
title_short |
Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka |
title_full |
Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka |
title_fullStr |
Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka |
title_full_unstemmed |
Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka |
title_sort |
carbon 13 isotopes reveal limited ocean circulation changes between interglacials of the last 800 ka |
publishDate |
2020 |
url |
https://research.vu.nl/en/publications/47b480fa-37c6-443b-9086-e00752cdf3fe https://doi.org/10.1029/2019PA003776 https://hdl.handle.net/1871.1/47b480fa-37c6-443b-9086-e00752cdf3fe https://research.vu.nl/ws/files/121654417/2019PA003776_Carbon_13_Isotopes_Reveal_Limited_Ocean_Circulation_Changes_Between_Interglacials_of_the_Last_800_ka.pdf http://www.scopus.com/inward/record.url?scp=85085316078&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85085316078&partnerID=8YFLogxK |
genre |
Antarc* Antarctica ice core |
genre_facet |
Antarc* Antarctica ice core |
op_source |
Bouttes , N , Vazquez Riveiros , N , Govin , A , Swingedouw , D , Sanchez-Goni , M F , Crosta , X & Roche , D M 2020 , ' Carbon 13 Isotopes Reveal Limited Ocean Circulation Changes Between Interglacials of the Last 800 ka ' , Paleoceanography and Paleoclimatology , vol. 35 , no. 5 , e2019PA003776 , pp. 1-18 . https://doi.org/10.1029/2019PA003776 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2019PA003776 |
container_title |
Paleoceanography and Paleoclimatology |
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35 |
container_issue |
5 |
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1813453546452942848 |