Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic.
Changes in ocean ventilation have been pivotal in regulating carbon sequestration and release on centennial to millennial timescales. However, paleoceanographic reconstructions documenting changes in deep-ocean ventilation using 14C dating, may bear multidimensional explanations, obfuscating the rol...
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ftunivbern:oai:boris.unibe.ch:184108 2023-08-20T04:08:08+02:00 Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. Liu, Jingyu Wang, Yipeng Jaccard, Samuel L Wang, Nan Gong, Xun Fang, Nianqiao Bao, Rui 2023-06-24 application/pdf https://boris.unibe.ch/184108/1/s41467-023-39490-6.pdf https://boris.unibe.ch/184108/ eng eng Nature Publishing Group https://boris.unibe.ch/184108/ info:eu-repo/semantics/openAccess Liu, Jingyu; Wang, Yipeng; Jaccard, Samuel L; Wang, Nan; Gong, Xun; Fang, Nianqiao; Bao, Rui (2023). Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. Nature communications, 14(1), p. 3788. Nature Publishing Group 10.1038/s41467-023-39490-6 <http://dx.doi.org/10.1038/s41467-023-39490-6> 550 Earth sciences & geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2023 ftunivbern https://doi.org/10.1038/s41467-023-39490-6 2023-07-31T22:22:10Z Changes in ocean ventilation have been pivotal in regulating carbon sequestration and release on centennial to millennial timescales. However, paleoceanographic reconstructions documenting changes in deep-ocean ventilation using 14C dating, may bear multidimensional explanations, obfuscating the roles of ocean ventilation played on climate evolution. Here, we show that previously inferred poorly ventilated conditions in the North Atlantic were linked to enhanced pre-aged organic carbon (OC) input during Heinrich Stadial 1 (HS1). The 14C age of sedimentary OC was approximately 13,345 ± 692 years older than the coeval foraminifera in the central North Atlantic during HS1, which is coupled to a ventilation age of 5,169 ± 660 years. Old OC was mainly of terrigenous origin and exported to the North Atlantic by ice-rafting. Remineralization of old terrigenous OC in the ocean may have contributed to, at least in part, the anomalously old ventilation ages reported for the high-latitude North Atlantic during HS1. Article in Journal/Newspaper North Atlantic BORIS (Bern Open Repository and Information System, University of Bern) Nature Communications 14 1 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
topic |
550 Earth sciences & geology |
spellingShingle |
550 Earth sciences & geology Liu, Jingyu Wang, Yipeng Jaccard, Samuel L Wang, Nan Gong, Xun Fang, Nianqiao Bao, Rui Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. |
topic_facet |
550 Earth sciences & geology |
description |
Changes in ocean ventilation have been pivotal in regulating carbon sequestration and release on centennial to millennial timescales. However, paleoceanographic reconstructions documenting changes in deep-ocean ventilation using 14C dating, may bear multidimensional explanations, obfuscating the roles of ocean ventilation played on climate evolution. Here, we show that previously inferred poorly ventilated conditions in the North Atlantic were linked to enhanced pre-aged organic carbon (OC) input during Heinrich Stadial 1 (HS1). The 14C age of sedimentary OC was approximately 13,345 ± 692 years older than the coeval foraminifera in the central North Atlantic during HS1, which is coupled to a ventilation age of 5,169 ± 660 years. Old OC was mainly of terrigenous origin and exported to the North Atlantic by ice-rafting. Remineralization of old terrigenous OC in the ocean may have contributed to, at least in part, the anomalously old ventilation ages reported for the high-latitude North Atlantic during HS1. |
format |
Article in Journal/Newspaper |
author |
Liu, Jingyu Wang, Yipeng Jaccard, Samuel L Wang, Nan Gong, Xun Fang, Nianqiao Bao, Rui |
author_facet |
Liu, Jingyu Wang, Yipeng Jaccard, Samuel L Wang, Nan Gong, Xun Fang, Nianqiao Bao, Rui |
author_sort |
Liu, Jingyu |
title |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. |
title_short |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. |
title_full |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. |
title_fullStr |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. |
title_full_unstemmed |
Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. |
title_sort |
pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the north atlantic. |
publisher |
Nature Publishing Group |
publishDate |
2023 |
url |
https://boris.unibe.ch/184108/1/s41467-023-39490-6.pdf https://boris.unibe.ch/184108/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Liu, Jingyu; Wang, Yipeng; Jaccard, Samuel L; Wang, Nan; Gong, Xun; Fang, Nianqiao; Bao, Rui (2023). Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. Nature communications, 14(1), p. 3788. Nature Publishing Group 10.1038/s41467-023-39490-6 <http://dx.doi.org/10.1038/s41467-023-39490-6> |
op_relation |
https://boris.unibe.ch/184108/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-023-39490-6 |
container_title |
Nature Communications |
container_volume |
14 |
container_issue |
1 |
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1774720245092581376 |