Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry

16 páginas, 12 figuras, 2 tablas

Detalles Bibliográficos
Autores: Ríos, Aida F., Álvarez-Salgado, Xosé Antón, Pérez, Fiz F., Bingler, Linda S., Arístegui, Javier, Mémery, L.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2003
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::02768d280c0ee256ec1e0ad4568681fc
Acceso en línea:http://hdl.handle.net/10261/52194
Access Level:acceso abierto
Palabra clave:CO2
Anthropogenic carbon
Water masses
South Atlantic
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spelling Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entryRíos, Aida F.Álvarez-Salgado, Xosé AntónPérez, Fiz F.Bingler, Linda S.Arístegui, JavierMémery, L.CO2Anthropogenic carbonWater massesSouth Atlantic16 páginas, 12 figuras, 2 tablasThe meridional WOCE line A14, just east of the South Atlantic Mid-Atlantic Ridge, was surveyed during the austral summer of 1995 from 4°N to 45°S. Full-depth profiles of pH, total alkalinity (TA), and total inorganic carbon (CT) were measured, allowing a test of the internal consistency of the CO2 system parameters. The correlation between CT measured and calculated from pH and TA was very good (r2 = 0.998), with an insignificant average difference of 0.1 ± 3.0 μmol kg−1 (n = 964 data). CO2 certified reference materials (CRMs) and a collection of selected samples subsequently analyzed at the Scripps Institution of Oceanography were used to assess the accuracy of our measurements at sea with satisfactory results. The three measured CO2 system variables were then used to identify the characteristic array of zonal flows throughout the South Atlantic intersected by A14. Equatorial, subequatorial, subtropical, and subantarctic domains were identified at the depth range of the surface water, South Atlantic Central Water (SACW), Antarctic Intermediate Water (AAIW), Upper Circumpolar Water (UCPW), North Atlantic Deep Water (NADW) and Antarctic Bottom Water (AABW). The nonconservative CO2 system parameters (pH, TA, CT) have been useful in identifying the transition from aged subequatorial to ventilated subtropical surface, central and intermediate waters. They have been identified as good tracers of the zonal circulation of NADW, with marked flows at the equator, 13°S, and 22°S (the “Namib Col Current”) and the sharp transition from UNADW to UCPW at 23°S. The anthropogenic CO2 inventory (CANT) was estimated and compared with CFC-derived apparent ages for different water masses along A14. The anthropogenic entry reached maximum in the relatively young and ventilated subantarctic and subtropical domains where AAIW was the most efficient CO2 trap. The calculated annual rate of CANT entry by AAIW was 0.82 μmol kg−1 y−1, in agreement with the annual rate estimated from the equilibrium between the atmospheric pCO2 increase and the upper mixed layer.This work was supported by the Spanish CICYT (grant ANT94-1168-E) and IFREMER (University contract 94 1430 087)Peer reviewedAmerican Geophysical UnionComisión Interministerial de Ciencia y Tecnología, CICYT (España)Institut Français de Recherche pour l'Exploitation de la MerConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201220122003info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/52194reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1029/2000JC000366Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::02768d280c0ee256ec1e0ad4568681fc2026-05-22T06:33:51Z
dc.title.none.fl_str_mv Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry
title Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry
spellingShingle Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry
Ríos, Aida F.
CO2
Anthropogenic carbon
Water masses
South Atlantic
title_short Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry
title_full Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry
title_fullStr Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry
title_full_unstemmed Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry
title_sort Carbon dioxide along WOCE line A14: Water masses characterization and anthropogenic entry
dc.creator.none.fl_str_mv Ríos, Aida F.
Álvarez-Salgado, Xosé Antón
Pérez, Fiz F.
Bingler, Linda S.
Arístegui, Javier
Mémery, L.
author Ríos, Aida F.
author_facet Ríos, Aida F.
Álvarez-Salgado, Xosé Antón
Pérez, Fiz F.
Bingler, Linda S.
Arístegui, Javier
Mémery, L.
author_role author
author2 Álvarez-Salgado, Xosé Antón
Pérez, Fiz F.
Bingler, Linda S.
Arístegui, Javier
Mémery, L.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Institut Français de Recherche pour l'Exploitation de la Mer
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv CO2
Anthropogenic carbon
Water masses
South Atlantic
topic CO2
Anthropogenic carbon
Water masses
South Atlantic
description 16 páginas, 12 figuras, 2 tablas
publishDate 2003
dc.date.none.fl_str_mv 2003
2012
2012
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/10261/52194
url http://hdl.handle.net/10261/52194
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1029/2000JC000366
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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score 15.812429

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