Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans

12 pages, 5 figures, supplementary material https://doi.org/10.1016/j.epsl.2020.116649

Detalles Bibliográficos
Autores: Shuttleworth, R., Bostock, H., Chalk, Thomas B., Calvo, Eva María, Pelejero, Carles, Martínez-García, Alfredo, Foster, Gavin L.
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/239173
Acceso en línea:http://hdl.handle.net/10261/239173
Access Level:acceso abierto
Palabra clave:Deglaciation
Heinrich Stadial 1
CO2 flux
Boron isotopes
Southern Ocean
Sub-Antarctic
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spelling Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceansShuttleworth, R.Bostock, H.Chalk, Thomas B.Calvo, Eva MaríaPelejero, CarlesMartínez-García, AlfredoFoster, Gavin L.DeglaciationHeinrich Stadial 1CO2 fluxBoron isotopesSouthern OceanSub-Antarctic12 pages, 5 figures, supplementary material https://doi.org/10.1016/j.epsl.2020.116649Over the last deglaciation there were two transient intervals of pronounced atmospheric CO rise; Heinrich Stadial 1 (17.5-15 kyr) and the Younger Dryas (12.9-11.5 kyr). Leading hypotheses accounting for the increased accumulation of CO in the atmosphere at these times invoke deep ocean carbon being released from the Southern Ocean and an associated decline in the global efficiency of the biological carbon pump. Here we present new deglacial surface seawater pH and CO records from the Sub-Antarctic regions of the Atlantic and Pacific oceans using boron isotopes measured on the planktic foraminifera Globigerina bulloides. These new data support the hypothesis that upwelling of carbon-rich water in the Sub-Antarctic occurred during Heinrich Stadial 1, and contributed to the initial increase in atmospheric CO. The increase in CO is coeval with a decline in biological productivity at both the Sub-Antarctic Atlantic and Pacific sites. However, there is no evidence for a significant outgassing of deep ocean carbon from the Sub-Antarctic during the rest of the deglacial, including the second period of atmospheric CO rise coeval with the Younger Dryas. This suggests that the second rapid increase in atmospheric CO is driven by processes operating elsewhere in the Southern Ocean, or another regionThis project was supported by the Natural Environment Research Council [NE/L002531/1] to R.S. and [NE/J021075/1] to G.L.F., Spanish Ministry of Science and Innovation [CGL2015-68194-R] to E.C. and C.P., S.L.J. acknowledges financial support from the Swiss National Science Foundation (SNSF grant PP00P2_172915), and A.M.-G. acknowledges funding from the Max Planck Society. With the funding support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI)ElsevierNatural Environment Research Council (UK)Ministerio de Economía y Competitividad (España)Swiss National Science FoundationMax Planck SocietyAgencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120212021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/239173reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-68194-Rhttps://doi.org/10.1016/j.epsl.2020.116649Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2391732026-05-22T06:33:51Z
dc.title.none.fl_str_mv Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
title Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
spellingShingle Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
Shuttleworth, R.
Deglaciation
Heinrich Stadial 1
CO2 flux
Boron isotopes
Southern Ocean
Sub-Antarctic
title_short Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
title_full Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
title_fullStr Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
title_full_unstemmed Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
title_sort Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
dc.creator.none.fl_str_mv Shuttleworth, R.
Bostock, H.
Chalk, Thomas B.
Calvo, Eva María
Pelejero, Carles
Martínez-García, Alfredo
Foster, Gavin L.
author Shuttleworth, R.
author_facet Shuttleworth, R.
Bostock, H.
Chalk, Thomas B.
Calvo, Eva María
Pelejero, Carles
Martínez-García, Alfredo
Foster, Gavin L.
author_role author
author2 Bostock, H.
Chalk, Thomas B.
Calvo, Eva María
Pelejero, Carles
Martínez-García, Alfredo
Foster, Gavin L.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Natural Environment Research Council (UK)
Ministerio de Economía y Competitividad (España)
Swiss National Science Foundation
Max Planck Society
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Deglaciation
Heinrich Stadial 1
CO2 flux
Boron isotopes
Southern Ocean
Sub-Antarctic
topic Deglaciation
Heinrich Stadial 1
CO2 flux
Boron isotopes
Southern Ocean
Sub-Antarctic
description 12 pages, 5 figures, supplementary material https://doi.org/10.1016/j.epsl.2020.116649
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/239173
url http://hdl.handle.net/10261/239173
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-68194-R
https://doi.org/10.1016/j.epsl.2020.116649
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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