Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific.
Consistent evidence for a poorly ventilated deep Pacific Ocean that could have released its radiocarbon-depleted carbon stock to the atmosphere during the last deglaciation has long been sought. Such evidence remains lacking, in part due to a paucity of surface reservoir age reconstructions required...
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ftubarcepubl:oai:diposit.ub.edu:2445/175981 2024-02-11T10:08:48+01:00 Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. De la Fuente, María Skinner, L. Calvo, Eva Pelejero Bou, Carles Cacho Lascorz, Isabel 2015-07-03 11 p. application/pdf http://hdl.handle.net/2445/175981 eng eng Nature Publishing Group Reproducció del document publicat a: https://doi.org/10.1038/ncomms8420 Nature Communications, 2015, vol. 6, p. 7420 Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) https://doi.org/10.1038/ncomms8420 2041-1723 http://hdl.handle.net/2445/175981 658057 26137976 cc-by (c) De la Fuente, M. et al., 2015 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess Oceanografia Pacífic Oceà Climatologia Oceanography Pacific Ocean Climatology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftubarcepubl https://doi.org/10.1038/ncomms8420 2024-01-24T01:14:44Z Consistent evidence for a poorly ventilated deep Pacific Ocean that could have released its radiocarbon-depleted carbon stock to the atmosphere during the last deglaciation has long been sought. Such evidence remains lacking, in part due to a paucity of surface reservoir age reconstructions required for accurate deep-ocean ventilation age estimates. Here we combine new radiocarbon data from the Eastern Equatorial Pacific (EEP) with chronostratigraphic calendar age constraints to estimate shallow sub-surface reservoir age variability, and thus provide estimates of deep-ocean ventilation ages. Both shallow- and deep-water ventilation ages drop across the last deglaciation, consistent with similar reconstructions from the South Pacific and Southern Ocean. The observed regional fingerprint linking the Southern Ocean and the EEP is consistent with a dominant southern source for EEP thermocline waters and suggests relatively invariant ocean interior transport pathways but significantly reduced air-sea gas exchange in the glacial southern high latitudes. Article in Journal/Newspaper Southern Ocean Dipòsit Digital de la Universitat de Barcelona Pacific Southern Ocean Nature Communications 6 1 |
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Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Oceanografia Pacífic Oceà Climatologia Oceanography Pacific Ocean Climatology |
spellingShingle |
Oceanografia Pacífic Oceà Climatologia Oceanography Pacific Ocean Climatology De la Fuente, María Skinner, L. Calvo, Eva Pelejero Bou, Carles Cacho Lascorz, Isabel Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. |
topic_facet |
Oceanografia Pacífic Oceà Climatologia Oceanography Pacific Ocean Climatology |
description |
Consistent evidence for a poorly ventilated deep Pacific Ocean that could have released its radiocarbon-depleted carbon stock to the atmosphere during the last deglaciation has long been sought. Such evidence remains lacking, in part due to a paucity of surface reservoir age reconstructions required for accurate deep-ocean ventilation age estimates. Here we combine new radiocarbon data from the Eastern Equatorial Pacific (EEP) with chronostratigraphic calendar age constraints to estimate shallow sub-surface reservoir age variability, and thus provide estimates of deep-ocean ventilation ages. Both shallow- and deep-water ventilation ages drop across the last deglaciation, consistent with similar reconstructions from the South Pacific and Southern Ocean. The observed regional fingerprint linking the Southern Ocean and the EEP is consistent with a dominant southern source for EEP thermocline waters and suggests relatively invariant ocean interior transport pathways but significantly reduced air-sea gas exchange in the glacial southern high latitudes. |
format |
Article in Journal/Newspaper |
author |
De la Fuente, María Skinner, L. Calvo, Eva Pelejero Bou, Carles Cacho Lascorz, Isabel |
author_facet |
De la Fuente, María Skinner, L. Calvo, Eva Pelejero Bou, Carles Cacho Lascorz, Isabel |
author_sort |
De la Fuente, María |
title |
Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. |
title_short |
Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. |
title_full |
Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. |
title_fullStr |
Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. |
title_full_unstemmed |
Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. |
title_sort |
increased reservoir ages and poorly ventilated deep waters inferred in the glacial eastern equatorial pacific. |
publisher |
Nature Publishing Group |
publishDate |
2015 |
url |
http://hdl.handle.net/2445/175981 |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Reproducció del document publicat a: https://doi.org/10.1038/ncomms8420 Nature Communications, 2015, vol. 6, p. 7420 Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) https://doi.org/10.1038/ncomms8420 2041-1723 http://hdl.handle.net/2445/175981 658057 26137976 |
op_rights |
cc-by (c) De la Fuente, M. et al., 2015 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/ncomms8420 |
container_title |
Nature Communications |
container_volume |
6 |
container_issue |
1 |
_version_ |
1790608400418078720 |