Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina

Autores
Otero, Federico; Alvarez, Mariano Sebastián; Salio, Paola Veronica; Vera, Carolina Susana
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The relationship between intraseasonal variability (IS; 10–90 days) and days which registered convection-associated strong surface wind events (CSSWE) over northeastern Argentina (NEA) was studied. The climatological behaviour of these strong wind events showed a higher duration and occurrence in austral spring. CSSWE were categorized as a function of the wet and dry phases of the spring-season intraseasonal (spring-SIS) index, which describes the activity of the leading pattern of IS-filtered outgoing longwave radiation (IS-OLR) during that season in eastern South America. A modulation of the IS variability over localized and mesoscale phenomena as the CSSWE was found, showing significant peaks of wind variability in that timescale, and especially the submonthly timescale. The CSSWE were categorized according to the phases of the spring-SIS pattern and most of them occurred before or during a wet phase, especially for the longer CSSWE. Moreover, the detection of CSSWE days during and before a dry phase was scarce. Rossby wave trains were observed to organize the circulation on intraseasonal timescales that configure regional cyclonic anomalies in such way that favours the development of CSSWE, promoting mid-level ascents over NEA and northerly advection of humidity to the region. Together with the composites of IS-OLR anomalies and the spectra of wind velocity, they support the fact that the higher-frequency IS variability is the primary influence for the development of CSSWE.
Fil: Otero, Federico. 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. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Alvarez, Mariano Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Salio, Paola Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; Argentina
Materia
INTRASEASONAL VARIABILITY
NORTHEASTERN ARGENTINA
STRONG CONVECTIVE EVENTS
SURFACE WINDS
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:11336/123428
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/123428
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Intraseasonal modulation of spring-strong wind events associated with convection in northeastern ArgentinaOtero, FedericoAlvarez, Mariano SebastiánSalio, Paola VeronicaVera, Carolina SusanaINTRASEASONAL VARIABILITYNORTHEASTERN ARGENTINASTRONG CONVECTIVE EVENTSSURFACE WINDShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The relationship between intraseasonal variability (IS; 10–90 days) and days which registered convection-associated strong surface wind events (CSSWE) over northeastern Argentina (NEA) was studied. The climatological behaviour of these strong wind events showed a higher duration and occurrence in austral spring. CSSWE were categorized as a function of the wet and dry phases of the spring-season intraseasonal (spring-SIS) index, which describes the activity of the leading pattern of IS-filtered outgoing longwave radiation (IS-OLR) during that season in eastern South America. A modulation of the IS variability over localized and mesoscale phenomena as the CSSWE was found, showing significant peaks of wind variability in that timescale, and especially the submonthly timescale. The CSSWE were categorized according to the phases of the spring-SIS pattern and most of them occurred before or during a wet phase, especially for the longer CSSWE. Moreover, the detection of CSSWE days during and before a dry phase was scarce. Rossby wave trains were observed to organize the circulation on intraseasonal timescales that configure regional cyclonic anomalies in such way that favours the development of CSSWE, promoting mid-level ascents over NEA and northerly advection of humidity to the region. Together with the composites of IS-OLR anomalies and the spectra of wind velocity, they support the fact that the higher-frequency IS variability is the primary influence for the development of CSSWE.Fil: Otero, Federico. 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. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; ArgentinaFil: Alvarez, Mariano Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; ArgentinaFil: Salio, Paola Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; ArgentinaFil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; ArgentinaJohn Wiley & Sons Ltd2019-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/123428Otero, Federico; Alvarez, Mariano Sebastián; Salio, Paola Veronica; Vera, Carolina Susana; Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina; John Wiley & Sons Ltd; International Journal of Climatology; 39; 14; 6-2019; 5228-52400899-8418CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/joc.6135info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.6135info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:42:33Zoai:ri.conicet.gov.ar:11336/123428instacron: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:34982025-11-05 09:42:33.364CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina
title Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina
spellingShingle Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina
Otero, Federico
INTRASEASONAL VARIABILITY
NORTHEASTERN ARGENTINA
STRONG CONVECTIVE EVENTS
SURFACE WINDS
title_short Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina
title_full Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina
title_fullStr Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina
title_full_unstemmed Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina
title_sort Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina
dc.creator.none.fl_str_mv Otero, Federico
Alvarez, Mariano Sebastián
Salio, Paola Veronica
Vera, Carolina Susana
author Otero, Federico
author_facet Otero, Federico
Alvarez, Mariano Sebastián
Salio, Paola Veronica
Vera, Carolina Susana
author_role author
author2 Alvarez, Mariano Sebastián
Salio, Paola Veronica
Vera, Carolina Susana
author2_role author
author
author
dc.subject.none.fl_str_mv INTRASEASONAL VARIABILITY
NORTHEASTERN ARGENTINA
STRONG CONVECTIVE EVENTS
SURFACE WINDS
topic INTRASEASONAL VARIABILITY
NORTHEASTERN ARGENTINA
STRONG CONVECTIVE EVENTS
SURFACE WINDS
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 relationship between intraseasonal variability (IS; 10–90 days) and days which registered convection-associated strong surface wind events (CSSWE) over northeastern Argentina (NEA) was studied. The climatological behaviour of these strong wind events showed a higher duration and occurrence in austral spring. CSSWE were categorized as a function of the wet and dry phases of the spring-season intraseasonal (spring-SIS) index, which describes the activity of the leading pattern of IS-filtered outgoing longwave radiation (IS-OLR) during that season in eastern South America. A modulation of the IS variability over localized and mesoscale phenomena as the CSSWE was found, showing significant peaks of wind variability in that timescale, and especially the submonthly timescale. The CSSWE were categorized according to the phases of the spring-SIS pattern and most of them occurred before or during a wet phase, especially for the longer CSSWE. Moreover, the detection of CSSWE days during and before a dry phase was scarce. Rossby wave trains were observed to organize the circulation on intraseasonal timescales that configure regional cyclonic anomalies in such way that favours the development of CSSWE, promoting mid-level ascents over NEA and northerly advection of humidity to the region. Together with the composites of IS-OLR anomalies and the spectra of wind velocity, they support the fact that the higher-frequency IS variability is the primary influence for the development of CSSWE.
Fil: Otero, Federico. 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. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Alvarez, Mariano Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Salio, Paola Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Vera, Carolina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Instituto Franco-argentino sobre Estudios del Clima y sus Impactos; Argentina
description The relationship between intraseasonal variability (IS; 10–90 days) and days which registered convection-associated strong surface wind events (CSSWE) over northeastern Argentina (NEA) was studied. The climatological behaviour of these strong wind events showed a higher duration and occurrence in austral spring. CSSWE were categorized as a function of the wet and dry phases of the spring-season intraseasonal (spring-SIS) index, which describes the activity of the leading pattern of IS-filtered outgoing longwave radiation (IS-OLR) during that season in eastern South America. A modulation of the IS variability over localized and mesoscale phenomena as the CSSWE was found, showing significant peaks of wind variability in that timescale, and especially the submonthly timescale. The CSSWE were categorized according to the phases of the spring-SIS pattern and most of them occurred before or during a wet phase, especially for the longer CSSWE. Moreover, the detection of CSSWE days during and before a dry phase was scarce. Rossby wave trains were observed to organize the circulation on intraseasonal timescales that configure regional cyclonic anomalies in such way that favours the development of CSSWE, promoting mid-level ascents over NEA and northerly advection of humidity to the region. Together with the composites of IS-OLR anomalies and the spectra of wind velocity, they support the fact that the higher-frequency IS variability is the primary influence for the development of CSSWE.
publishDate 2019
dc.date.none.fl_str_mv 2019-06
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/11336/123428
Otero, Federico; Alvarez, Mariano Sebastián; Salio, Paola Veronica; Vera, Carolina Susana; Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina; John Wiley & Sons Ltd; International Journal of Climatology; 39; 14; 6-2019; 5228-5240
0899-8418
CONICET Digital
CONICET
url http://hdl.handle.net/11336/123428
identifier_str_mv Otero, Federico; Alvarez, Mariano Sebastián; Salio, Paola Veronica; Vera, Carolina Susana; Intraseasonal modulation of spring-strong wind events associated with convection in northeastern Argentina; John Wiley & Sons Ltd; International Journal of Climatology; 39; 14; 6-2019; 5228-5240
0899-8418
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://onlinelibrary.wiley.com/doi/abs/10.1002/joc.6135
info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.6135
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 John Wiley & Sons Ltd
publisher.none.fl_str_mv John Wiley & Sons Ltd
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 13.087074

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