Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)

Autores
Saavedra, Felipe; Cortés, Gonzalo; Viale, Maximiliano; Margulis, Steven; McPhee, James
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper quantifies the climatological contribution of atmospheric rivers (ARs) to annual snow accumulation in the Andes Cordillera between 26.5° S and 36.5° S. An AR identification algorithm, and a high-resolution (0.01°) snow reanalysis dataset, both especially developed for this mountainous region, are used for this quantification over the 1984–2014 period. Results show that AR snowfall events explain approximately 50% of the annual snow accumulation over the study area, and are 2.5 times more intense than non-AR snowfall events. Due to orographic precipitation enhancement on the western slopes and a prominent rain shadow effect on the eastern slopes, annual snow accumulation and AR storms contribution to this accumulation are, on average, 7 and 12 times larger on western than on eastern slopes of the mountain range, respectively. Areas with lower peak elevations see more spillover snowfall over the eastern slopes of the mountain range, especially south of 35° S. Analysis of teleconnections with El Niño Southern Oscillation shows a reduction in the AR frequency across the study area during La Niña episodes and, consequently, a lower contribution to snow accumulation. Conversely, weak and moderate El Niño episodes show an increase in AR frequency, and consequently more snowfall.
Fil: Saavedra, Felipe. Universidad de Chile; Chile
Fil: Cortés, Gonzalo. Centro Tecnológico del Agua; Chile
Fil: Viale, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Margulis, Steven. University of California at Los Angeles; Estados Unidos
Fil: McPhee, James. Universidad de Chile; Chile
Materia
ANDES CORDILLERA
ATMOSPHERIC RIVERS
EL NIÑO
ENSO
RAIN SHADOW
SNOW ACCUMULATION
SOUTH AMERICA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/142039
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)Saavedra, FelipeCortés, GonzaloViale, MaximilianoMargulis, StevenMcPhee, JamesANDES CORDILLERAATMOSPHERIC RIVERSEL NIÑOENSORAIN SHADOWSNOW ACCUMULATIONSOUTH AMERICAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1This paper quantifies the climatological contribution of atmospheric rivers (ARs) to annual snow accumulation in the Andes Cordillera between 26.5° S and 36.5° S. An AR identification algorithm, and a high-resolution (0.01°) snow reanalysis dataset, both especially developed for this mountainous region, are used for this quantification over the 1984–2014 period. Results show that AR snowfall events explain approximately 50% of the annual snow accumulation over the study area, and are 2.5 times more intense than non-AR snowfall events. Due to orographic precipitation enhancement on the western slopes and a prominent rain shadow effect on the eastern slopes, annual snow accumulation and AR storms contribution to this accumulation are, on average, 7 and 12 times larger on western than on eastern slopes of the mountain range, respectively. Areas with lower peak elevations see more spillover snowfall over the eastern slopes of the mountain range, especially south of 35° S. Analysis of teleconnections with El Niño Southern Oscillation shows a reduction in the AR frequency across the study area during La Niña episodes and, consequently, a lower contribution to snow accumulation. Conversely, weak and moderate El Niño episodes show an increase in AR frequency, and consequently more snowfall.Fil: Saavedra, Felipe. Universidad de Chile; ChileFil: Cortés, Gonzalo. Centro Tecnológico del Agua; ChileFil: Viale, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Margulis, Steven. University of California at Los Angeles; Estados UnidosFil: McPhee, James. Universidad de Chile; ChileFrontiers Media2020-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/142039Saavedra, Felipe; Cortés, Gonzalo; Viale, Maximiliano; Margulis, Steven; McPhee, James; Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S); Frontiers Media; Frontiers in Earth Science; 8; 7-2020; 1-112296-6463CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/article/10.3389/feart.2020.00261/fullinfo:eu-repo/semantics/altIdentifier/doi/10.3389/feart.2020.00261info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:55:01Zoai:ri.conicet.gov.ar:11336/142039instacron: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 09:55:01.642CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)
title Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)
spellingShingle Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)
Saavedra, Felipe
ANDES CORDILLERA
ATMOSPHERIC RIVERS
EL NIÑO
ENSO
RAIN SHADOW
SNOW ACCUMULATION
SOUTH AMERICA
title_short Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)
title_full Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)
title_fullStr Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)
title_full_unstemmed Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)
title_sort Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S)
dc.creator.none.fl_str_mv Saavedra, Felipe
Cortés, Gonzalo
Viale, Maximiliano
Margulis, Steven
McPhee, James
author Saavedra, Felipe
author_facet Saavedra, Felipe
Cortés, Gonzalo
Viale, Maximiliano
Margulis, Steven
McPhee, James
author_role author
author2 Cortés, Gonzalo
Viale, Maximiliano
Margulis, Steven
McPhee, James
author2_role author
author
author
author
dc.subject.none.fl_str_mv ANDES CORDILLERA
ATMOSPHERIC RIVERS
EL NIÑO
ENSO
RAIN SHADOW
SNOW ACCUMULATION
SOUTH AMERICA
topic ANDES CORDILLERA
ATMOSPHERIC RIVERS
EL NIÑO
ENSO
RAIN SHADOW
SNOW ACCUMULATION
SOUTH AMERICA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This paper quantifies the climatological contribution of atmospheric rivers (ARs) to annual snow accumulation in the Andes Cordillera between 26.5° S and 36.5° S. An AR identification algorithm, and a high-resolution (0.01°) snow reanalysis dataset, both especially developed for this mountainous region, are used for this quantification over the 1984–2014 period. Results show that AR snowfall events explain approximately 50% of the annual snow accumulation over the study area, and are 2.5 times more intense than non-AR snowfall events. Due to orographic precipitation enhancement on the western slopes and a prominent rain shadow effect on the eastern slopes, annual snow accumulation and AR storms contribution to this accumulation are, on average, 7 and 12 times larger on western than on eastern slopes of the mountain range, respectively. Areas with lower peak elevations see more spillover snowfall over the eastern slopes of the mountain range, especially south of 35° S. Analysis of teleconnections with El Niño Southern Oscillation shows a reduction in the AR frequency across the study area during La Niña episodes and, consequently, a lower contribution to snow accumulation. Conversely, weak and moderate El Niño episodes show an increase in AR frequency, and consequently more snowfall.
Fil: Saavedra, Felipe. Universidad de Chile; Chile
Fil: Cortés, Gonzalo. Centro Tecnológico del Agua; Chile
Fil: Viale, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Margulis, Steven. University of California at Los Angeles; Estados Unidos
Fil: McPhee, James. Universidad de Chile; Chile
description This paper quantifies the climatological contribution of atmospheric rivers (ARs) to annual snow accumulation in the Andes Cordillera between 26.5° S and 36.5° S. An AR identification algorithm, and a high-resolution (0.01°) snow reanalysis dataset, both especially developed for this mountainous region, are used for this quantification over the 1984–2014 period. Results show that AR snowfall events explain approximately 50% of the annual snow accumulation over the study area, and are 2.5 times more intense than non-AR snowfall events. Due to orographic precipitation enhancement on the western slopes and a prominent rain shadow effect on the eastern slopes, annual snow accumulation and AR storms contribution to this accumulation are, on average, 7 and 12 times larger on western than on eastern slopes of the mountain range, respectively. Areas with lower peak elevations see more spillover snowfall over the eastern slopes of the mountain range, especially south of 35° S. Analysis of teleconnections with El Niño Southern Oscillation shows a reduction in the AR frequency across the study area during La Niña episodes and, consequently, a lower contribution to snow accumulation. Conversely, weak and moderate El Niño episodes show an increase in AR frequency, and consequently more snowfall.
publishDate 2020
dc.date.none.fl_str_mv 2020-07
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/11336/142039
Saavedra, Felipe; Cortés, Gonzalo; Viale, Maximiliano; Margulis, Steven; McPhee, James; Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S); Frontiers Media; Frontiers in Earth Science; 8; 7-2020; 1-11
2296-6463
CONICET Digital
CONICET
url http://hdl.handle.net/11336/142039
identifier_str_mv Saavedra, Felipe; Cortés, Gonzalo; Viale, Maximiliano; Margulis, Steven; McPhee, James; Atmospheric rivers contribution to the snow accumulation over the southern Andes (26.5° S–37.5° S); Frontiers Media; Frontiers in Earth Science; 8; 7-2020; 1-11
2296-6463
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/article/10.3389/feart.2020.00261/full
info:eu-repo/semantics/altIdentifier/doi/10.3389/feart.2020.00261
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
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_ 1842269319374831616
score 13.13397

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