Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina

Autores
Hurtado, Santiago Ignacio; Agosta Scarel, Eduardo A.; Zaninelli, Pablo G.
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Summer precipitation is a crucial variable for Subtropical Argentina (STAr) from a social and economic perspective. Monthly forcing mechanism variations of subregional summer precipitation over STAr are studied. Most subregional precipitation anomalies are related to a convection dipole between eastern STAr and the South Atlantic Convergence Zone (SACZ) region. In this sense, wet (dry) conditions in subregions of eastern STAr are associated with anomalous low-level anticyclonic (cyclonic) tropospheric circulation in southeastern Brazil. The anomalies are mainly associated with a teleconnection via Rossby wave train that propagate through the South Pacific, which is link to El Niño Southern Oscillation (ENSO) phenomena in December, to enhanced convection in the western tropical Pacific in January, and to conversion of mean flow kinetic energy in January and February. Also, the anomalous low-level anticyclonic tropospheric circulation in southeastern Brazil (wet conditions in eastern STAr) is related to anomalous Walker cell caused mainly by an active convection core in the western Pacific basin probably owing to the Madden-Julian Oscillation (MJO) phases 6 and 7. In addition, dry (wet) conditions in subregions of southwestern STAr in January and February are associated with an anomalous low-level tropospheric anticyclonic (cyclonic) circulation over Patagonia and the Argentinian Sea. The tropospheric anticyclonic circulation anomaly center in February appears to be generated by vorticity flux convergence owing to a quasi-stationary Rossby wave activity from the previous month (January) that generates positive geopotential height anomalies over Patagonia and surrounding areas.
EEA Bariloche
Fil: Hurtado, Santiago Ignacio. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina
Fil: Hurtado, Santiago Ignacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina
Fil: Hurtado, Santiago Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Hurtado, Santiago Ignacio. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Agosta, Eduardo A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Agosta, Eduardo A. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Zaninelli, Pablo G. Consejo Superior de Investigaciones Científicas. Instituto de Geociencias (IGEO); España
Fil: Zaninelli, Pablo G. Universidad Complutense de Madrid. Instituto de Geociencias (IGEO); España
Fil: Zaninelli, Pablo G. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zaninelli, Pablo G. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fuente
Atmospheric Research 285 : 106609. (April 2023)
Materia
Precipitación Atmosférica
Verano
Zona Subtropical
Teledetección
Clima
Argentina
Precipitation
Summer
Subtropical Zones
Remote Sensing
Climate
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/14709
Acceder
id INTADig_ea4bc0c592e925fdb4cf7c9d82bed8ce
oai_identifier_str oai:localhost:20.500.12123/14709
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Monthly variations of forcing mechanisms of austral summer precipitation in subtropical ArgentinaHurtado, Santiago IgnacioAgosta Scarel, Eduardo A.Zaninelli, Pablo G.Precipitación AtmosféricaVeranoZona SubtropicalTeledetecciónClimaArgentinaPrecipitationSummerSubtropical ZonesRemote SensingClimateSummer precipitation is a crucial variable for Subtropical Argentina (STAr) from a social and economic perspective. Monthly forcing mechanism variations of subregional summer precipitation over STAr are studied. Most subregional precipitation anomalies are related to a convection dipole between eastern STAr and the South Atlantic Convergence Zone (SACZ) region. In this sense, wet (dry) conditions in subregions of eastern STAr are associated with anomalous low-level anticyclonic (cyclonic) tropospheric circulation in southeastern Brazil. The anomalies are mainly associated with a teleconnection via Rossby wave train that propagate through the South Pacific, which is link to El Niño Southern Oscillation (ENSO) phenomena in December, to enhanced convection in the western tropical Pacific in January, and to conversion of mean flow kinetic energy in January and February. Also, the anomalous low-level anticyclonic tropospheric circulation in southeastern Brazil (wet conditions in eastern STAr) is related to anomalous Walker cell caused mainly by an active convection core in the western Pacific basin probably owing to the Madden-Julian Oscillation (MJO) phases 6 and 7. In addition, dry (wet) conditions in subregions of southwestern STAr in January and February are associated with an anomalous low-level tropospheric anticyclonic (cyclonic) circulation over Patagonia and the Argentinian Sea. The tropospheric anticyclonic circulation anomaly center in February appears to be generated by vorticity flux convergence owing to a quasi-stationary Rossby wave activity from the previous month (January) that generates positive geopotential height anomalies over Patagonia and surrounding areas.EEA BarilocheFil: Hurtado, Santiago Ignacio. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; ArgentinaFil: Hurtado, Santiago Ignacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; ArgentinaFil: Hurtado, Santiago Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Hurtado, Santiago Ignacio. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Agosta, Eduardo A. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Agosta, Eduardo A. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Zaninelli, Pablo G. Consejo Superior de Investigaciones Científicas. Instituto de Geociencias (IGEO); EspañaFil: Zaninelli, Pablo G. Universidad Complutense de Madrid. Instituto de Geociencias (IGEO); EspañaFil: Zaninelli, Pablo G. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Zaninelli, Pablo G. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaElsevier2023-07-06T16:29:08Z2023-07-06T16:29:08Z2023-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/14709https://www.sciencedirect.com/science/article/pii/S01698095230000660169-80951873-2895https://doi.org/10.1016/j.atmosres.2023.106609Atmospheric Research 285 : 106609. (April 2023)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología AgropecuariaengArgentina .......... (nation) (World, South America)7006477info:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:46:00Zoai:localhost:20.500.12123/14709instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:46:00.733INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina
title Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina
spellingShingle Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina
Hurtado, Santiago Ignacio
Precipitación Atmosférica
Verano
Zona Subtropical
Teledetección
Clima
Argentina
Precipitation
Summer
Subtropical Zones
Remote Sensing
Climate
title_short Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina
title_full Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina
title_fullStr Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina
title_full_unstemmed Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina
title_sort Monthly variations of forcing mechanisms of austral summer precipitation in subtropical Argentina
dc.creator.none.fl_str_mv Hurtado, Santiago Ignacio
Agosta Scarel, Eduardo A.
Zaninelli, Pablo G.
author Hurtado, Santiago Ignacio
author_facet Hurtado, Santiago Ignacio
Agosta Scarel, Eduardo A.
Zaninelli, Pablo G.
author_role author
author2 Agosta Scarel, Eduardo A.
Zaninelli, Pablo G.
author2_role author
author
dc.subject.none.fl_str_mv Precipitación Atmosférica
Verano
Zona Subtropical
Teledetección
Clima
Argentina
Precipitation
Summer
Subtropical Zones
Remote Sensing
Climate
topic Precipitación Atmosférica
Verano
Zona Subtropical
Teledetección
Clima
Argentina
Precipitation
Summer
Subtropical Zones
Remote Sensing
Climate
dc.description.none.fl_txt_mv Summer precipitation is a crucial variable for Subtropical Argentina (STAr) from a social and economic perspective. Monthly forcing mechanism variations of subregional summer precipitation over STAr are studied. Most subregional precipitation anomalies are related to a convection dipole between eastern STAr and the South Atlantic Convergence Zone (SACZ) region. In this sense, wet (dry) conditions in subregions of eastern STAr are associated with anomalous low-level anticyclonic (cyclonic) tropospheric circulation in southeastern Brazil. The anomalies are mainly associated with a teleconnection via Rossby wave train that propagate through the South Pacific, which is link to El Niño Southern Oscillation (ENSO) phenomena in December, to enhanced convection in the western tropical Pacific in January, and to conversion of mean flow kinetic energy in January and February. Also, the anomalous low-level anticyclonic tropospheric circulation in southeastern Brazil (wet conditions in eastern STAr) is related to anomalous Walker cell caused mainly by an active convection core in the western Pacific basin probably owing to the Madden-Julian Oscillation (MJO) phases 6 and 7. In addition, dry (wet) conditions in subregions of southwestern STAr in January and February are associated with an anomalous low-level tropospheric anticyclonic (cyclonic) circulation over Patagonia and the Argentinian Sea. The tropospheric anticyclonic circulation anomaly center in February appears to be generated by vorticity flux convergence owing to a quasi-stationary Rossby wave activity from the previous month (January) that generates positive geopotential height anomalies over Patagonia and surrounding areas.
EEA Bariloche
Fil: Hurtado, Santiago Ignacio. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina
Fil: Hurtado, Santiago Ignacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina
Fil: Hurtado, Santiago Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Hurtado, Santiago Ignacio. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Agosta, Eduardo A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Agosta, Eduardo A. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Zaninelli, Pablo G. Consejo Superior de Investigaciones Científicas. Instituto de Geociencias (IGEO); España
Fil: Zaninelli, Pablo G. Universidad Complutense de Madrid. Instituto de Geociencias (IGEO); España
Fil: Zaninelli, Pablo G. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zaninelli, Pablo G. Universidad de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
description Summer precipitation is a crucial variable for Subtropical Argentina (STAr) from a social and economic perspective. Monthly forcing mechanism variations of subregional summer precipitation over STAr are studied. Most subregional precipitation anomalies are related to a convection dipole between eastern STAr and the South Atlantic Convergence Zone (SACZ) region. In this sense, wet (dry) conditions in subregions of eastern STAr are associated with anomalous low-level anticyclonic (cyclonic) tropospheric circulation in southeastern Brazil. The anomalies are mainly associated with a teleconnection via Rossby wave train that propagate through the South Pacific, which is link to El Niño Southern Oscillation (ENSO) phenomena in December, to enhanced convection in the western tropical Pacific in January, and to conversion of mean flow kinetic energy in January and February. Also, the anomalous low-level anticyclonic tropospheric circulation in southeastern Brazil (wet conditions in eastern STAr) is related to anomalous Walker cell caused mainly by an active convection core in the western Pacific basin probably owing to the Madden-Julian Oscillation (MJO) phases 6 and 7. In addition, dry (wet) conditions in subregions of southwestern STAr in January and February are associated with an anomalous low-level tropospheric anticyclonic (cyclonic) circulation over Patagonia and the Argentinian Sea. The tropospheric anticyclonic circulation anomaly center in February appears to be generated by vorticity flux convergence owing to a quasi-stationary Rossby wave activity from the previous month (January) that generates positive geopotential height anomalies over Patagonia and surrounding areas.
publishDate 2023
dc.date.none.fl_str_mv 2023-07-06T16:29:08Z
2023-07-06T16:29:08Z
2023-04
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/20.500.12123/14709
https://www.sciencedirect.com/science/article/pii/S0169809523000066
0169-8095
1873-2895
https://doi.org/10.1016/j.atmosres.2023.106609
url http://hdl.handle.net/20.500.12123/14709
https://www.sciencedirect.com/science/article/pii/S0169809523000066
https://doi.org/10.1016/j.atmosres.2023.106609
identifier_str_mv 0169-8095
1873-2895
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Argentina .......... (nation) (World, South America)
7006477
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Atmospheric Research 285 : 106609. (April 2023)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.559606

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