Air-sea disequilibrium enhances ocean carbon storage during glacial periods

Autores
Khatiwala, S.; Schmittner, A.; Muglia, Juan
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The prevailing hypothesis for lower atmospheric carbon dioxide (CO2) concentrations during glacial periods is an increased efficiency of the ocean’s biological pump. However, tests of this and other hypotheses have been hampered by the difficulty to accurately quantify ocean carbon components. Here, we use an observationally constrained earth system model to precisely quantify these components and the role that different processes play in simulated glacial-interglacial CO2 variations. We find that air-sea disequilibrium greatly amplifies the effects of cooler temperatures and iron fertilization on glacial ocean carbon storage even as the efficiency of the soft-tissue biological pump decreases. These two processes, which have previously been regarded as minor, explain most of our simulated glacial CO2 drawdown, while ocean circulation and sea ice extent, hitherto considered dominant, emerge as relatively small contributors.
Fil: Khatiwala, S.. University of Oxford; Reino Unido
Fil: Schmittner, A.. State University Of Oregon. College Of Earth, Ocean And Atmospheric Sciences.; Estados Unidos
Fil: Muglia, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. State University Of Oregon. College Of Earth, Ocean And Atmospheric Sciences.; Estados Unidos
Materia
CARBON
GLACIAL PERIODS
AIR-SEA GAS EXCHANGE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/110965
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Air-sea disequilibrium enhances ocean carbon storage during glacial periodsKhatiwala, S.Schmittner, A.Muglia, JuanCARBONGLACIAL PERIODSAIR-SEA GAS EXCHANGEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The prevailing hypothesis for lower atmospheric carbon dioxide (CO2) concentrations during glacial periods is an increased efficiency of the ocean’s biological pump. However, tests of this and other hypotheses have been hampered by the difficulty to accurately quantify ocean carbon components. Here, we use an observationally constrained earth system model to precisely quantify these components and the role that different processes play in simulated glacial-interglacial CO2 variations. We find that air-sea disequilibrium greatly amplifies the effects of cooler temperatures and iron fertilization on glacial ocean carbon storage even as the efficiency of the soft-tissue biological pump decreases. These two processes, which have previously been regarded as minor, explain most of our simulated glacial CO2 drawdown, while ocean circulation and sea ice extent, hitherto considered dominant, emerge as relatively small contributors.Fil: Khatiwala, S.. University of Oxford; Reino UnidoFil: Schmittner, A.. State University Of Oregon. College Of Earth, Ocean And Atmospheric Sciences.; Estados UnidosFil: Muglia, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. State University Of Oregon. College Of Earth, Ocean And Atmospheric Sciences.; Estados UnidosAmerican Association for the Advancement of Science2019-06-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/110965Khatiwala, S.; Schmittner, A.; Muglia, Juan; Air-sea disequilibrium enhances ocean carbon storage during glacial periods; American Association for the Advancement of Science; Science Advances; 5; 6; 18-6-2019; 1-112375-2548CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://advances.sciencemag.org/lookup/doi/10.1126/sciadv.aaw4981info:eu-repo/semantics/altIdentifier/doi/10.1126/sciadv.aaw4981info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:01:20Zoai:ri.conicet.gov.ar:11336/110965instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:01:20.794CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Air-sea disequilibrium enhances ocean carbon storage during glacial periods
title Air-sea disequilibrium enhances ocean carbon storage during glacial periods
spellingShingle Air-sea disequilibrium enhances ocean carbon storage during glacial periods
Khatiwala, S.
CARBON
GLACIAL PERIODS
AIR-SEA GAS EXCHANGE
title_short Air-sea disequilibrium enhances ocean carbon storage during glacial periods
title_full Air-sea disequilibrium enhances ocean carbon storage during glacial periods
title_fullStr Air-sea disequilibrium enhances ocean carbon storage during glacial periods
title_full_unstemmed Air-sea disequilibrium enhances ocean carbon storage during glacial periods
title_sort Air-sea disequilibrium enhances ocean carbon storage during glacial periods
dc.creator.none.fl_str_mv Khatiwala, S.
Schmittner, A.
Muglia, Juan
author Khatiwala, S.
author_facet Khatiwala, S.
Schmittner, A.
Muglia, Juan
author_role author
author2 Schmittner, A.
Muglia, Juan
author2_role author
author
dc.subject.none.fl_str_mv CARBON
GLACIAL PERIODS
AIR-SEA GAS EXCHANGE
topic CARBON
GLACIAL PERIODS
AIR-SEA GAS EXCHANGE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The prevailing hypothesis for lower atmospheric carbon dioxide (CO2) concentrations during glacial periods is an increased efficiency of the ocean’s biological pump. However, tests of this and other hypotheses have been hampered by the difficulty to accurately quantify ocean carbon components. Here, we use an observationally constrained earth system model to precisely quantify these components and the role that different processes play in simulated glacial-interglacial CO2 variations. We find that air-sea disequilibrium greatly amplifies the effects of cooler temperatures and iron fertilization on glacial ocean carbon storage even as the efficiency of the soft-tissue biological pump decreases. These two processes, which have previously been regarded as minor, explain most of our simulated glacial CO2 drawdown, while ocean circulation and sea ice extent, hitherto considered dominant, emerge as relatively small contributors.
Fil: Khatiwala, S.. University of Oxford; Reino Unido
Fil: Schmittner, A.. State University Of Oregon. College Of Earth, Ocean And Atmospheric Sciences.; Estados Unidos
Fil: Muglia, Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. State University Of Oregon. College Of Earth, Ocean And Atmospheric Sciences.; Estados Unidos
description The prevailing hypothesis for lower atmospheric carbon dioxide (CO2) concentrations during glacial periods is an increased efficiency of the ocean’s biological pump. However, tests of this and other hypotheses have been hampered by the difficulty to accurately quantify ocean carbon components. Here, we use an observationally constrained earth system model to precisely quantify these components and the role that different processes play in simulated glacial-interglacial CO2 variations. We find that air-sea disequilibrium greatly amplifies the effects of cooler temperatures and iron fertilization on glacial ocean carbon storage even as the efficiency of the soft-tissue biological pump decreases. These two processes, which have previously been regarded as minor, explain most of our simulated glacial CO2 drawdown, while ocean circulation and sea ice extent, hitherto considered dominant, emerge as relatively small contributors.
publishDate 2019
dc.date.none.fl_str_mv 2019-06-18
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/110965
Khatiwala, S.; Schmittner, A.; Muglia, Juan; Air-sea disequilibrium enhances ocean carbon storage during glacial periods; American Association for the Advancement of Science; Science Advances; 5; 6; 18-6-2019; 1-11
2375-2548
CONICET Digital
CONICET
url http://hdl.handle.net/11336/110965
identifier_str_mv Khatiwala, S.; Schmittner, A.; Muglia, Juan; Air-sea disequilibrium enhances ocean carbon storage during glacial periods; American Association for the Advancement of Science; Science Advances; 5; 6; 18-6-2019; 1-11
2375-2548
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://advances.sciencemag.org/lookup/doi/10.1126/sciadv.aaw4981
info:eu-repo/semantics/altIdentifier/doi/10.1126/sciadv.aaw4981
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Association for the Advancement of Science
publisher.none.fl_str_mv American Association for the Advancement of Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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