Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America

Autores
Vanneste, Heleen; de Vleeschouwer, Francois; Martínez Cortizas, Antonio; Von Scheffer, Clemens; Piotrowska, Natalia; Coronato, Andrea Maria Josefa; Le Roux, Gaël
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Atmospheric dust loadings play a crucial role in the global climate system. Southern South America is a key dust source, however, dust deposition rates remain poorly quantified since the last glacial termination (~17 kyr ago), an important timeframe to anticipate future climate changes. Here we use isotope and element geochemistry in a peat archive from Tierra del Fuego, to reconstruct atmospheric dust fluxes and associated environmental and westerly wind changes for the past 16.2 kyr. Dust depositions were elevated during the Antarctic Cold Reversal (ACR) and second half of the Younger Dryas (YD) stadial, originating from the glacial Beagle Channel valley. This increase was most probably associated with a strengthening of the westerlies during both periods as dust source areas were already available before the onset of the dust peaks and remained present throughout. Congruent with glacier advances across Patagonia, this dust record indicates an overall strengthening of the wind belt during the ACR. On the other hand, we argue that the YD dust peak is linked to strong and poleward shifted westerlies. The close interplay between dust fluxes and climatic changes demonstrates that atmospheric circulation was essential in generating and sustaining present-day interglacial conditions.
Fil: Vanneste, Heleen. Centre National de la Recherche Scientifique; Francia. Université de Toulouse, Institut National Polytechnique, EcoLab; Francia
Fil: de Vleeschouwer, Francois. Centre National de la Recherche Scientifique; Francia. Université de Toulouse, Institut National Polytechnique, EcoLab; Francia; Francia
Fil: Martínez Cortizas, Antonio. Universidad de Santiago de Compostela; España
Fil: Von Scheffer, Clemens. Université de Toulouse, Institut National Polytechnique, EcoLab; Francia
Fil: Piotrowska, Natalia. Department of Radioisotopes, Institute of Physics, Silesian University of Technology; Polonia
Fil: Coronato, Andrea Maria Josefa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Le Roux, Gaël. Centre National de la Recherche Scientifique; Francia
Materia
DUST DEPOSITION
WESTERLIES
SOUTH AMERICA
CLIMATIC CHANGE
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:11336/8668
Acceder
id CONICETDig_68313eb302f832c017b79e943cf80eaf
oai_identifier_str oai:ri.conicet.gov.ar:11336/8668
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Late-glacial elevated dust deposition linked to westerly wind shifts in southern South AmericaVanneste, Heleende Vleeschouwer, FrancoisMartínez Cortizas, AntonioVon Scheffer, ClemensPiotrowska, NataliaCoronato, Andrea Maria JosefaLe Roux, GaëlDUST DEPOSITIONWESTERLIESSOUTH AMERICACLIMATIC CHANGEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Atmospheric dust loadings play a crucial role in the global climate system. Southern South America is a key dust source, however, dust deposition rates remain poorly quantified since the last glacial termination (~17 kyr ago), an important timeframe to anticipate future climate changes. Here we use isotope and element geochemistry in a peat archive from Tierra del Fuego, to reconstruct atmospheric dust fluxes and associated environmental and westerly wind changes for the past 16.2 kyr. Dust depositions were elevated during the Antarctic Cold Reversal (ACR) and second half of the Younger Dryas (YD) stadial, originating from the glacial Beagle Channel valley. This increase was most probably associated with a strengthening of the westerlies during both periods as dust source areas were already available before the onset of the dust peaks and remained present throughout. Congruent with glacier advances across Patagonia, this dust record indicates an overall strengthening of the wind belt during the ACR. On the other hand, we argue that the YD dust peak is linked to strong and poleward shifted westerlies. The close interplay between dust fluxes and climatic changes demonstrates that atmospheric circulation was essential in generating and sustaining present-day interglacial conditions.Fil: Vanneste, Heleen. Centre National de la Recherche Scientifique; Francia. Université de Toulouse, Institut National Polytechnique, EcoLab; FranciaFil: de Vleeschouwer, Francois. Centre National de la Recherche Scientifique; Francia. Université de Toulouse, Institut National Polytechnique, EcoLab; Francia; FranciaFil: Martínez Cortizas, Antonio. Universidad de Santiago de Compostela; EspañaFil: Von Scheffer, Clemens. Université de Toulouse, Institut National Polytechnique, EcoLab; FranciaFil: Piotrowska, Natalia. Department of Radioisotopes, Institute of Physics, Silesian University of Technology; PoloniaFil: Coronato, Andrea Maria Josefa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Le Roux, Gaël. Centre National de la Recherche Scientifique; FranciaNature Publishing Group2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/8668Vanneste, Heleen; de Vleeschouwer, Francois; Martínez Cortizas, Antonio; Von Scheffer, Clemens; Piotrowska, Natalia; et al.; Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America; Nature Publishing Group; Scientific Reports; 5; 1167; 7-2015; 1-102045-2322enginfo:eu-repo/semantics/altIdentifier/doi/10.1038/srep11670info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/srep11670info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:33Zoai:ri.conicet.gov.ar:11336/8668instacron: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:34982025-09-03 10:04:33.28CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
title Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
spellingShingle Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
Vanneste, Heleen
DUST DEPOSITION
WESTERLIES
SOUTH AMERICA
CLIMATIC CHANGE
title_short Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
title_full Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
title_fullStr Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
title_full_unstemmed Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
title_sort Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
dc.creator.none.fl_str_mv Vanneste, Heleen
de Vleeschouwer, Francois
Martínez Cortizas, Antonio
Von Scheffer, Clemens
Piotrowska, Natalia
Coronato, Andrea Maria Josefa
Le Roux, Gaël
author Vanneste, Heleen
author_facet Vanneste, Heleen
de Vleeschouwer, Francois
Martínez Cortizas, Antonio
Von Scheffer, Clemens
Piotrowska, Natalia
Coronato, Andrea Maria Josefa
Le Roux, Gaël
author_role author
author2 de Vleeschouwer, Francois
Martínez Cortizas, Antonio
Von Scheffer, Clemens
Piotrowska, Natalia
Coronato, Andrea Maria Josefa
Le Roux, Gaël
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv DUST DEPOSITION
WESTERLIES
SOUTH AMERICA
CLIMATIC CHANGE
topic DUST DEPOSITION
WESTERLIES
SOUTH AMERICA
CLIMATIC CHANGE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Atmospheric dust loadings play a crucial role in the global climate system. Southern South America is a key dust source, however, dust deposition rates remain poorly quantified since the last glacial termination (~17 kyr ago), an important timeframe to anticipate future climate changes. Here we use isotope and element geochemistry in a peat archive from Tierra del Fuego, to reconstruct atmospheric dust fluxes and associated environmental and westerly wind changes for the past 16.2 kyr. Dust depositions were elevated during the Antarctic Cold Reversal (ACR) and second half of the Younger Dryas (YD) stadial, originating from the glacial Beagle Channel valley. This increase was most probably associated with a strengthening of the westerlies during both periods as dust source areas were already available before the onset of the dust peaks and remained present throughout. Congruent with glacier advances across Patagonia, this dust record indicates an overall strengthening of the wind belt during the ACR. On the other hand, we argue that the YD dust peak is linked to strong and poleward shifted westerlies. The close interplay between dust fluxes and climatic changes demonstrates that atmospheric circulation was essential in generating and sustaining present-day interglacial conditions.
Fil: Vanneste, Heleen. Centre National de la Recherche Scientifique; Francia. Université de Toulouse, Institut National Polytechnique, EcoLab; Francia
Fil: de Vleeschouwer, Francois. Centre National de la Recherche Scientifique; Francia. Université de Toulouse, Institut National Polytechnique, EcoLab; Francia; Francia
Fil: Martínez Cortizas, Antonio. Universidad de Santiago de Compostela; España
Fil: Von Scheffer, Clemens. Université de Toulouse, Institut National Polytechnique, EcoLab; Francia
Fil: Piotrowska, Natalia. Department of Radioisotopes, Institute of Physics, Silesian University of Technology; Polonia
Fil: Coronato, Andrea Maria Josefa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Le Roux, Gaël. Centre National de la Recherche Scientifique; Francia
description Atmospheric dust loadings play a crucial role in the global climate system. Southern South America is a key dust source, however, dust deposition rates remain poorly quantified since the last glacial termination (~17 kyr ago), an important timeframe to anticipate future climate changes. Here we use isotope and element geochemistry in a peat archive from Tierra del Fuego, to reconstruct atmospheric dust fluxes and associated environmental and westerly wind changes for the past 16.2 kyr. Dust depositions were elevated during the Antarctic Cold Reversal (ACR) and second half of the Younger Dryas (YD) stadial, originating from the glacial Beagle Channel valley. This increase was most probably associated with a strengthening of the westerlies during both periods as dust source areas were already available before the onset of the dust peaks and remained present throughout. Congruent with glacier advances across Patagonia, this dust record indicates an overall strengthening of the wind belt during the ACR. On the other hand, we argue that the YD dust peak is linked to strong and poleward shifted westerlies. The close interplay between dust fluxes and climatic changes demonstrates that atmospheric circulation was essential in generating and sustaining present-day interglacial conditions.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
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/11336/8668
Vanneste, Heleen; de Vleeschouwer, Francois; Martínez Cortizas, Antonio; Von Scheffer, Clemens; Piotrowska, Natalia; et al.; Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America; Nature Publishing Group; Scientific Reports; 5; 1167; 7-2015; 1-10
2045-2322
url http://hdl.handle.net/11336/8668
identifier_str_mv Vanneste, Heleen; de Vleeschouwer, Francois; Martínez Cortizas, Antonio; Von Scheffer, Clemens; Piotrowska, Natalia; et al.; Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America; Nature Publishing Group; Scientific Reports; 5; 1167; 7-2015; 1-10
2045-2322
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1038/srep11670
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/srep11670
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
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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
_version_ 1842269861796904960
score 13.13397

Publicaciones similares