Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale

Autores
Moreno, P.I.; Vilanova, Isabel; Villa-Martínez, R.; Dunbar, R.B.; Mucciarone, D.A.; Kaplan, M.R.; Garreaud, R.D.; Rojas, M.; Moy, C.M.; De Pol-Holz, R.; Lambert, F.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Southern Westerly Winds (SWW) are the surface expression of geostrophic winds that encircle the southern mid-latitudes. In conjunction with the Southern Ocean, they establish a coupled system that not only controls climate in the southern third of the world, but is also closely connected to the position of the Intertropical Convergence Zone and CO2 degassing from the deep ocean. Paradoxically, little is known about their behavior since the last ice age and relationships with mid-latitude glacier history and tropical climate variability. Here we present a lake sediment record from Chilean Patagonia (51°S) that reveals fluctuations of the low-level SWW at mid-latitudes, including strong westerlies during the Antarctic Cold Reversal, anomalously low intensity during the early Holocene, which was unfavorable for glacier growth, and strong SWW since ∼7.5 ka. We detect nine positive Southern Annular Mode-like events at centennial timescale since ∼5.8 ka that alternate with cold/wet intervals favorable for glacier expansions (Neoglaciations) in southern Patagonia. The correspondence of key features of mid-latitude atmospheric circulation with shifts in tropical climate since ∼10 ka suggests that coherent climatic shifts in these regions have driven climate change in vast sectors of the Southern Hemisphere at centennial and millennial timescales.
Fil: Moreno, P.I.. Universidad de Chile; Chile
Fil: Vilanova, Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Villa-Martínez, R.. Universidad de Magallanes; Chile
Fil: Dunbar, R.B.. University of Stanford; Estados Unidos
Fil: Mucciarone, D.A.. University of Stanford; Estados Unidos
Fil: Kaplan, M.R.. Columbia University; Estados Unidos
Fil: Garreaud, R.D.. Universidad de Chile; Chile
Fil: Rojas, M.. Universidad de Chile; Chile
Fil: Moy, C.M.. University of Otago; Nueva Zelanda
Fil: De Pol-Holz, R.. Universidad de Magallanes; Chile
Fil: Lambert, F.. Pontificia Universidad Católica de Chile; Chile
Materia
PATAGONIA
SOUTHERN WESTERLY WINDS
SOUTHERN ANNULAR MODE
LAKE SEDIMENT RECORD
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:11336/93935
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/93935
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Onset and Evolution of Southern Annular Mode-Like Changes at Centennial TimescaleMoreno, P.I.Vilanova, IsabelVilla-Martínez, R.Dunbar, R.B.Mucciarone, D.A.Kaplan, M.R.Garreaud, R.D.Rojas, M.Moy, C.M.De Pol-Holz, R.Lambert, F.PATAGONIASOUTHERN WESTERLY WINDSSOUTHERN ANNULAR MODELAKE SEDIMENT RECORDhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Southern Westerly Winds (SWW) are the surface expression of geostrophic winds that encircle the southern mid-latitudes. In conjunction with the Southern Ocean, they establish a coupled system that not only controls climate in the southern third of the world, but is also closely connected to the position of the Intertropical Convergence Zone and CO2 degassing from the deep ocean. Paradoxically, little is known about their behavior since the last ice age and relationships with mid-latitude glacier history and tropical climate variability. Here we present a lake sediment record from Chilean Patagonia (51°S) that reveals fluctuations of the low-level SWW at mid-latitudes, including strong westerlies during the Antarctic Cold Reversal, anomalously low intensity during the early Holocene, which was unfavorable for glacier growth, and strong SWW since ∼7.5 ka. We detect nine positive Southern Annular Mode-like events at centennial timescale since ∼5.8 ka that alternate with cold/wet intervals favorable for glacier expansions (Neoglaciations) in southern Patagonia. The correspondence of key features of mid-latitude atmospheric circulation with shifts in tropical climate since ∼10 ka suggests that coherent climatic shifts in these regions have driven climate change in vast sectors of the Southern Hemisphere at centennial and millennial timescales.Fil: Moreno, P.I.. Universidad de Chile; ChileFil: Vilanova, Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Villa-Martínez, R.. Universidad de Magallanes; ChileFil: Dunbar, R.B.. University of Stanford; Estados UnidosFil: Mucciarone, D.A.. University of Stanford; Estados UnidosFil: Kaplan, M.R.. Columbia University; Estados UnidosFil: Garreaud, R.D.. Universidad de Chile; ChileFil: Rojas, M.. Universidad de Chile; ChileFil: Moy, C.M.. University of Otago; Nueva ZelandaFil: De Pol-Holz, R.. Universidad de Magallanes; ChileFil: Lambert, F.. Pontificia Universidad Católica de Chile; ChileNature Publishing Group2018-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/93935Moreno, P.I.; Vilanova, Isabel; Villa-Martínez, R.; Dunbar, R.B.; Mucciarone, D.A.; et al.; Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale; Nature Publishing Group; Scientific Reports; 8; 1; 2-2018; 1-92045-2322CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41598-018-21836-6info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-018-21836-6info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:37:02Zoai:ri.conicet.gov.ar:11336/93935instacron: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 15:37:02.957CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale
title Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale
spellingShingle Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale
Moreno, P.I.
PATAGONIA
SOUTHERN WESTERLY WINDS
SOUTHERN ANNULAR MODE
LAKE SEDIMENT RECORD
title_short Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale
title_full Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale
title_fullStr Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale
title_full_unstemmed Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale
title_sort Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale
dc.creator.none.fl_str_mv Moreno, P.I.
Vilanova, Isabel
Villa-Martínez, R.
Dunbar, R.B.
Mucciarone, D.A.
Kaplan, M.R.
Garreaud, R.D.
Rojas, M.
Moy, C.M.
De Pol-Holz, R.
Lambert, F.
author Moreno, P.I.
author_facet Moreno, P.I.
Vilanova, Isabel
Villa-Martínez, R.
Dunbar, R.B.
Mucciarone, D.A.
Kaplan, M.R.
Garreaud, R.D.
Rojas, M.
Moy, C.M.
De Pol-Holz, R.
Lambert, F.
author_role author
author2 Vilanova, Isabel
Villa-Martínez, R.
Dunbar, R.B.
Mucciarone, D.A.
Kaplan, M.R.
Garreaud, R.D.
Rojas, M.
Moy, C.M.
De Pol-Holz, R.
Lambert, F.
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv PATAGONIA
SOUTHERN WESTERLY WINDS
SOUTHERN ANNULAR MODE
LAKE SEDIMENT RECORD
topic PATAGONIA
SOUTHERN WESTERLY WINDS
SOUTHERN ANNULAR MODE
LAKE SEDIMENT RECORD
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 Southern Westerly Winds (SWW) are the surface expression of geostrophic winds that encircle the southern mid-latitudes. In conjunction with the Southern Ocean, they establish a coupled system that not only controls climate in the southern third of the world, but is also closely connected to the position of the Intertropical Convergence Zone and CO2 degassing from the deep ocean. Paradoxically, little is known about their behavior since the last ice age and relationships with mid-latitude glacier history and tropical climate variability. Here we present a lake sediment record from Chilean Patagonia (51°S) that reveals fluctuations of the low-level SWW at mid-latitudes, including strong westerlies during the Antarctic Cold Reversal, anomalously low intensity during the early Holocene, which was unfavorable for glacier growth, and strong SWW since ∼7.5 ka. We detect nine positive Southern Annular Mode-like events at centennial timescale since ∼5.8 ka that alternate with cold/wet intervals favorable for glacier expansions (Neoglaciations) in southern Patagonia. The correspondence of key features of mid-latitude atmospheric circulation with shifts in tropical climate since ∼10 ka suggests that coherent climatic shifts in these regions have driven climate change in vast sectors of the Southern Hemisphere at centennial and millennial timescales.
Fil: Moreno, P.I.. Universidad de Chile; Chile
Fil: Vilanova, Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Villa-Martínez, R.. Universidad de Magallanes; Chile
Fil: Dunbar, R.B.. University of Stanford; Estados Unidos
Fil: Mucciarone, D.A.. University of Stanford; Estados Unidos
Fil: Kaplan, M.R.. Columbia University; Estados Unidos
Fil: Garreaud, R.D.. Universidad de Chile; Chile
Fil: Rojas, M.. Universidad de Chile; Chile
Fil: Moy, C.M.. University of Otago; Nueva Zelanda
Fil: De Pol-Holz, R.. Universidad de Magallanes; Chile
Fil: Lambert, F.. Pontificia Universidad Católica de Chile; Chile
description The Southern Westerly Winds (SWW) are the surface expression of geostrophic winds that encircle the southern mid-latitudes. In conjunction with the Southern Ocean, they establish a coupled system that not only controls climate in the southern third of the world, but is also closely connected to the position of the Intertropical Convergence Zone and CO2 degassing from the deep ocean. Paradoxically, little is known about their behavior since the last ice age and relationships with mid-latitude glacier history and tropical climate variability. Here we present a lake sediment record from Chilean Patagonia (51°S) that reveals fluctuations of the low-level SWW at mid-latitudes, including strong westerlies during the Antarctic Cold Reversal, anomalously low intensity during the early Holocene, which was unfavorable for glacier growth, and strong SWW since ∼7.5 ka. We detect nine positive Southern Annular Mode-like events at centennial timescale since ∼5.8 ka that alternate with cold/wet intervals favorable for glacier expansions (Neoglaciations) in southern Patagonia. The correspondence of key features of mid-latitude atmospheric circulation with shifts in tropical climate since ∼10 ka suggests that coherent climatic shifts in these regions have driven climate change in vast sectors of the Southern Hemisphere at centennial and millennial timescales.
publishDate 2018
dc.date.none.fl_str_mv 2018-02
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/11336/93935
Moreno, P.I.; Vilanova, Isabel; Villa-Martínez, R.; Dunbar, R.B.; Mucciarone, D.A.; et al.; Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale; Nature Publishing Group; Scientific Reports; 8; 1; 2-2018; 1-9
2045-2322
CONICET Digital
CONICET
url http://hdl.handle.net/11336/93935
identifier_str_mv Moreno, P.I.; Vilanova, Isabel; Villa-Martínez, R.; Dunbar, R.B.; Mucciarone, D.A.; et al.; Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale; Nature Publishing Group; Scientific Reports; 8; 1; 2-2018; 1-9
2045-2322
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://www.nature.com/articles/s41598-018-21836-6
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-018-21836-6
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 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
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score 13.22299

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