Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone

23 pages, 9 figures, 3 tables, supporting information https://doi.org/10.1002/2017JC013509

Detalhes bibliográficos
Autores: Llanillo, P. J., Pelegrí, Josep Lluís, Talley, L., Peña-Izquierdo, Jesús, Cordero, Raul R.
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2018
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/165427
Acesso em linha:http://hdl.handle.net/10261/165427
Access Level:Acceso aberto
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spelling Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum ZoneLlanillo, P. J.Pelegrí, Josep LluísTalley, L.Peña-Izquierdo, JesúsCordero, Raul R.23 pages, 9 figures, 3 tables, supporting information https://doi.org/10.1002/2017JC013509Ventilation of the eastern South Pacific Oxygen Minimum Zone (ESP-OMZ) is quantified using climatological Argo and dissolved oxygen data, combined with reanalysis wind stress data. We (1) estimate all oxygen fluxes (advection and turbulent diffusion) ventilating this OMZ, (2) quantify for the first time the oxygen contribution from the subtropical versus the traditionally studied tropical-equatorial pathway, and (3) derive a refined annual-mean oxygen budget for the ESP-OMZ. In the upper OMZ layer, net oxygen supply is dominated by tropical-equatorial advection, with more than one-third of this supply upwelling into the Ekman layer through previously unevaluated vertical advection, within the overturning component of the regional Subtropical Cell (STC). Below the STC, at the OMZ's core, advection is weak and turbulent diffusion (isoneutral and dianeutral) accounts for 89% of the net oxygen supply, most of it coming from the oxygen-rich subtropical gyre. In the deep OMZ layer, net oxygen supply occurs only through turbulent diffusion and is dominated by the tropical-equatorial pathway. Considering the entire OMZ, net oxygen supply (3.84 ± 0.42 µmol kg yr) is dominated by isoneutral turbulent diffusion (56.5%, split into 32.3% of tropical-equatorial origin and 24.2% of subtropical origin), followed by isoneutral advection (32.0%, split into 27.6% of tropical-equatorial origin and 4.4% of subtropical origin) and dianeutral diffusion (11.5%). One-quarter (25.8%) of the net oxygen input escapes through dianeutral advection (most of it upwelling) and, assuming steady state, biological consumption is responsible for most of the oxygen loss (74.2%)P.J. Llanillo acknowledges support from CONICYT/FONDECYT through the Postdoctorado project 3150229. J.L. Pelegrí and J. Peña-Izquierdo acknowledge funding by the Spanish Ministerio de Economía y Competitividad through projects TIC-MOC (CTM2011-28867) and VA-DE-RETRO (CTM2014-56987-P)Peer ReviewedAmerican Geophysical UnionMinisterio de Economía y Competitividad (España)Comisión Nacional de Investigación Científica y Tecnológica (Chile)Fondo Nacional de Desarrollo Científico y Tecnológico (Chile)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2018201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/165427reponame: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/CTM2014-56987-Phttps://doi.org/10.1002/2017JC013509Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1654272026-05-22T06:33:51Z
dc.title.none.fl_str_mv Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone
title Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone
spellingShingle Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone
Llanillo, P. J.
title_short Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone
title_full Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone
title_fullStr Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone
title_full_unstemmed Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone
title_sort Oxygen Pathways and Budget for the Eastern South Pacific Oxygen Minimum Zone
dc.creator.none.fl_str_mv Llanillo, P. J.
Pelegrí, Josep Lluís
Talley, L.
Peña-Izquierdo, Jesús
Cordero, Raul R.
author Llanillo, P. J.
author_facet Llanillo, P. J.
Pelegrí, Josep Lluís
Talley, L.
Peña-Izquierdo, Jesús
Cordero, Raul R.
author_role author
author2 Pelegrí, Josep Lluís
Talley, L.
Peña-Izquierdo, Jesús
Cordero, Raul R.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Comisión Nacional de Investigación Científica y Tecnológica (Chile)
Fondo Nacional de Desarrollo Científico y Tecnológico (Chile)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description 23 pages, 9 figures, 3 tables, supporting information https://doi.org/10.1002/2017JC013509
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/165427
url http://hdl.handle.net/10261/165427
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/CTM2014-56987-P
https://doi.org/10.1002/2017JC013509
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
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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