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...
Published in: | Nature Communications |
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2015
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Online Access: | http://eprints.esc.cam.ac.uk/3506/ http://eprints.esc.cam.ac.uk/3506/1/ncomms8420.pdf http://eprints.esc.cam.ac.uk/3506/2/ncomms8420-f1.jpg http://eprints.esc.cam.ac.uk/3506/3/ncomms8420-s1.pdf http://www.nature.com/ncomms/2015/150703/ncomms8420/full/ncomms8420.html https://doi.org/10.1038/ncomms8420 |
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ftucambridgeesc:oai:eprints.esc.cam.ac.uk:3506 2023-05-15T18:24:54+02:00 Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific de la Fuente, Maria Skinner, Luke Calvo, Eva Pelejero, Carles Cacho, Isabel 2015-08-05 text image http://eprints.esc.cam.ac.uk/3506/ http://eprints.esc.cam.ac.uk/3506/1/ncomms8420.pdf http://eprints.esc.cam.ac.uk/3506/2/ncomms8420-f1.jpg http://eprints.esc.cam.ac.uk/3506/3/ncomms8420-s1.pdf http://www.nature.com/ncomms/2015/150703/ncomms8420/full/ncomms8420.html https://doi.org/10.1038/ncomms8420 en eng http://eprints.esc.cam.ac.uk/3506/1/ncomms8420.pdf http://eprints.esc.cam.ac.uk/3506/2/ncomms8420-f1.jpg http://eprints.esc.cam.ac.uk/3506/3/ncomms8420-s1.pdf de la Fuente, Maria and Skinner, Luke and Calvo, Eva and Pelejero, Carles and Cacho, Isabel (2015) Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. Nature Communications, 6. p. 7420. ISSN 2041-1723 DOI https://doi.org/10.1038/ncomms8420 <https://doi.org/10.1038/ncomms8420> cc_by CC-BY 01 - Climate Change and Earth-Ocean Atmosphere Systems Article PeerReviewed 2015 ftucambridgeesc https://doi.org/10.1038/ncomms8420 2020-08-27T18:09:41Z 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 University of Cambridge, Department of Earth Sciences: ESC Publications Southern Ocean Pacific Nature Communications 6 1 |
institution |
Open Polar |
collection |
University of Cambridge, Department of Earth Sciences: ESC Publications |
op_collection_id |
ftucambridgeesc |
language |
English |
topic |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
spellingShingle |
01 - Climate Change and Earth-Ocean Atmosphere Systems de la Fuente, Maria Skinner, Luke Calvo, Eva Pelejero, Carles Cacho, Isabel Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific |
topic_facet |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
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, Maria Skinner, Luke Calvo, Eva Pelejero, Carles Cacho, Isabel |
author_facet |
de la Fuente, Maria Skinner, Luke Calvo, Eva Pelejero, Carles Cacho, Isabel |
author_sort |
de la Fuente, Maria |
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 |
publishDate |
2015 |
url |
http://eprints.esc.cam.ac.uk/3506/ http://eprints.esc.cam.ac.uk/3506/1/ncomms8420.pdf http://eprints.esc.cam.ac.uk/3506/2/ncomms8420-f1.jpg http://eprints.esc.cam.ac.uk/3506/3/ncomms8420-s1.pdf http://www.nature.com/ncomms/2015/150703/ncomms8420/full/ncomms8420.html https://doi.org/10.1038/ncomms8420 |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://eprints.esc.cam.ac.uk/3506/1/ncomms8420.pdf http://eprints.esc.cam.ac.uk/3506/2/ncomms8420-f1.jpg http://eprints.esc.cam.ac.uk/3506/3/ncomms8420-s1.pdf de la Fuente, Maria and Skinner, Luke and Calvo, Eva and Pelejero, Carles and Cacho, Isabel (2015) Increased reservoir ages and poorly ventilated deep waters inferred in the glacial Eastern Equatorial Pacific. Nature Communications, 6. p. 7420. ISSN 2041-1723 DOI https://doi.org/10.1038/ncomms8420 <https://doi.org/10.1038/ncomms8420> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/ncomms8420 |
container_title |
Nature Communications |
container_volume |
6 |
container_issue |
1 |
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1766205911445012480 |