A correlated shortening of the North and South American monsoon seasons in the past few decades

Autores
Arias, Paola A.; Fu, Rong; Vera, Carolina Susana; Rojas, Maisa
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Our observational analysis shows that the wetseasons of the American monsoon systems have shortenedsince 1978 due to correlated earlier retreats of the NorthAmerican monsoon (NAM) and late onsets of the southernAmazon wet season, an important part of the South Americanmonsoon (SAM). These changes are related to thecombination of the global sea surface temperature (SST)warming mode, the El Niño-Southern Oscillation (ENSO),the Atlantic Multidecadal Oscillation (AMO), the westwardshift of the North Atlantic subtropical high (NASH),and the enhancement of Pacific South American and PacificNorth American wave train patterns, which induces variationsof the regional circulation at interannual and decadalscales. The joint contributions from these forcing factorsare associated with a stronger and more equatorwardregional Hadley cell, which enhances convergence towardsthe equator, strengthening and possibly delaying the retreatof the tropical part of the NAM. This in turn accelerates the demise of the northern NAM and delays the reversalof the cross-equatorial flow over South America, reducingmoisture transport to the SAM and delaying its onset. Inaddition, the thermodynamic response to warming appearsto cause local drier land conditions over both regions, reinforcingthe observed changes in these monsoons. Althoughprevious studies have identified the isolated influence of theregional Hadley cell, ENSO, AMO, global SST warming,and NASH on the NAM, the correlated changes betweenNAM and SAM through variations of the cross-equatorialflow had not been established before.
Fil: Arias, Paola A.. Universidad de Antioquia; Colombia. Universidad de Chile; Chile
Fil: Fu, Rong. University of Texas at Austin; Estados Unidos
Fil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; Argentina
Fil: Rojas, Maisa. Universidad de Chile; Chile
Materia
Southern Amazon Wet Season
North American Monsoon
South America Monsoon
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:11336/17729
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/17729
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A correlated shortening of the North and South American monsoon seasons in the past few decadesArias, Paola A.Fu, RongVera, Carolina SusanaRojas, MaisaSouthern Amazon Wet SeasonNorth American MonsoonSouth America Monsoonhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Our observational analysis shows that the wetseasons of the American monsoon systems have shortenedsince 1978 due to correlated earlier retreats of the NorthAmerican monsoon (NAM) and late onsets of the southernAmazon wet season, an important part of the South Americanmonsoon (SAM). These changes are related to thecombination of the global sea surface temperature (SST)warming mode, the El Niño-Southern Oscillation (ENSO),the Atlantic Multidecadal Oscillation (AMO), the westwardshift of the North Atlantic subtropical high (NASH),and the enhancement of Pacific South American and PacificNorth American wave train patterns, which induces variationsof the regional circulation at interannual and decadalscales. The joint contributions from these forcing factorsare associated with a stronger and more equatorwardregional Hadley cell, which enhances convergence towardsthe equator, strengthening and possibly delaying the retreatof the tropical part of the NAM. This in turn accelerates the demise of the northern NAM and delays the reversalof the cross-equatorial flow over South America, reducingmoisture transport to the SAM and delaying its onset. Inaddition, the thermodynamic response to warming appearsto cause local drier land conditions over both regions, reinforcingthe observed changes in these monsoons. Althoughprevious studies have identified the isolated influence of theregional Hadley cell, ENSO, AMO, global SST warming,and NASH on the NAM, the correlated changes betweenNAM and SAM through variations of the cross-equatorialflow had not been established before.Fil: Arias, Paola A.. Universidad de Antioquia; Colombia. Universidad de Chile; ChileFil: Fu, Rong. University of Texas at Austin; Estados UnidosFil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; ArgentinaFil: Rojas, Maisa. Universidad de Chile; ChileSpringer2015-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17729Arias, Paola A.; Fu, Rong; Vera, Carolina Susana; Rojas, Maisa; A correlated shortening of the North and South American monsoon seasons in the past few decades; Springer; Climate Dynamics; 45; 11; 12-2015; 3183-32030930-75751432-0894enginfo:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs00382-015-2533-1#info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-015-2533-1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:23:34Zoai:ri.conicet.gov.ar:11336/17729instacron: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:34982025-09-10 13:23:34.625CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A correlated shortening of the North and South American monsoon seasons in the past few decades
title A correlated shortening of the North and South American monsoon seasons in the past few decades
spellingShingle A correlated shortening of the North and South American monsoon seasons in the past few decades
Arias, Paola A.
Southern Amazon Wet Season
North American Monsoon
South America Monsoon
title_short A correlated shortening of the North and South American monsoon seasons in the past few decades
title_full A correlated shortening of the North and South American monsoon seasons in the past few decades
title_fullStr A correlated shortening of the North and South American monsoon seasons in the past few decades
title_full_unstemmed A correlated shortening of the North and South American monsoon seasons in the past few decades
title_sort A correlated shortening of the North and South American monsoon seasons in the past few decades
dc.creator.none.fl_str_mv Arias, Paola A.
Fu, Rong
Vera, Carolina Susana
Rojas, Maisa
author Arias, Paola A.
author_facet Arias, Paola A.
Fu, Rong
Vera, Carolina Susana
Rojas, Maisa
author_role author
author2 Fu, Rong
Vera, Carolina Susana
Rojas, Maisa
author2_role author
author
author
dc.subject.none.fl_str_mv Southern Amazon Wet Season
North American Monsoon
South America Monsoon
topic Southern Amazon Wet Season
North American Monsoon
South America Monsoon
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Our observational analysis shows that the wetseasons of the American monsoon systems have shortenedsince 1978 due to correlated earlier retreats of the NorthAmerican monsoon (NAM) and late onsets of the southernAmazon wet season, an important part of the South Americanmonsoon (SAM). These changes are related to thecombination of the global sea surface temperature (SST)warming mode, the El Niño-Southern Oscillation (ENSO),the Atlantic Multidecadal Oscillation (AMO), the westwardshift of the North Atlantic subtropical high (NASH),and the enhancement of Pacific South American and PacificNorth American wave train patterns, which induces variationsof the regional circulation at interannual and decadalscales. The joint contributions from these forcing factorsare associated with a stronger and more equatorwardregional Hadley cell, which enhances convergence towardsthe equator, strengthening and possibly delaying the retreatof the tropical part of the NAM. This in turn accelerates the demise of the northern NAM and delays the reversalof the cross-equatorial flow over South America, reducingmoisture transport to the SAM and delaying its onset. Inaddition, the thermodynamic response to warming appearsto cause local drier land conditions over both regions, reinforcingthe observed changes in these monsoons. Althoughprevious studies have identified the isolated influence of theregional Hadley cell, ENSO, AMO, global SST warming,and NASH on the NAM, the correlated changes betweenNAM and SAM through variations of the cross-equatorialflow had not been established before.
Fil: Arias, Paola A.. Universidad de Antioquia; Colombia. Universidad de Chile; Chile
Fil: Fu, Rong. University of Texas at Austin; Estados Unidos
Fil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmosfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmosfera; Argentina
Fil: Rojas, Maisa. Universidad de Chile; Chile
description Our observational analysis shows that the wetseasons of the American monsoon systems have shortenedsince 1978 due to correlated earlier retreats of the NorthAmerican monsoon (NAM) and late onsets of the southernAmazon wet season, an important part of the South Americanmonsoon (SAM). These changes are related to thecombination of the global sea surface temperature (SST)warming mode, the El Niño-Southern Oscillation (ENSO),the Atlantic Multidecadal Oscillation (AMO), the westwardshift of the North Atlantic subtropical high (NASH),and the enhancement of Pacific South American and PacificNorth American wave train patterns, which induces variationsof the regional circulation at interannual and decadalscales. The joint contributions from these forcing factorsare associated with a stronger and more equatorwardregional Hadley cell, which enhances convergence towardsthe equator, strengthening and possibly delaying the retreatof the tropical part of the NAM. This in turn accelerates the demise of the northern NAM and delays the reversalof the cross-equatorial flow over South America, reducingmoisture transport to the SAM and delaying its onset. Inaddition, the thermodynamic response to warming appearsto cause local drier land conditions over both regions, reinforcingthe observed changes in these monsoons. Althoughprevious studies have identified the isolated influence of theregional Hadley cell, ENSO, AMO, global SST warming,and NASH on the NAM, the correlated changes betweenNAM and SAM through variations of the cross-equatorialflow had not been established before.
publishDate 2015
dc.date.none.fl_str_mv 2015-12
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/11336/17729
Arias, Paola A.; Fu, Rong; Vera, Carolina Susana; Rojas, Maisa; A correlated shortening of the North and South American monsoon seasons in the past few decades; Springer; Climate Dynamics; 45; 11; 12-2015; 3183-3203
0930-7575
1432-0894
url http://hdl.handle.net/11336/17729
identifier_str_mv Arias, Paola A.; Fu, Rong; Vera, Carolina Susana; Rojas, Maisa; A correlated shortening of the North and South American monsoon seasons in the past few decades; Springer; Climate Dynamics; 45; 11; 12-2015; 3183-3203
0930-7575
1432-0894
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs00382-015-2533-1#
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-015-2533-1
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 Springer
publisher.none.fl_str_mv Springer
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 12.48226

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