Variability of extreme precipitation events in the Northeastern Argentine region

Autores
Aliaga, Vanina Solange; Piccolo, Maria Cintia
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Northeastern Argentine (NEA) region is one of the most productive and vulnerable to climate risk due to frequent extreme precipitation events (EPE). The present study aims to identify and explain the spatiotemporal distribution of precipitation in the NEA region to assess its heterogeneity. A cluster analysis from Ward’s hierarchical method was applied using observational precipitation collected at meteorological stations during 1959–2018. The elbow method and a nonhierarchical analysis of K-means were also useful to define the correct number of clusters. The three groups obtained responded to an east-west precipitation gradient that generated a zonal atmospheric circulation, and the positive anomalies mostly coincided with El Niño-Southern Oscillation (ENSO) events. Although they had similar seasonal rainfall and annual amplitudes, each subregion presented its specific variability at different temporal scales. Positive anomalies were more significant in the east of the NEA region, which is reflected in the displacement of isohyets in the last decades. Our results suggest that almost the entire NEA region is highly vulnerable to EPE, but with higher intensity and frequency in the center and east. Due to the agricultural and ecological importance of this region and the socioeconomic effects of EPE, studies with more detailed scales than the regional ones are necessary.
Fil: Aliaga, Vanina Solange. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Fil: Piccolo, Maria Cintia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur. Departamento de Geografía y Turismo; Argentina
Materia
EXTREME PRECIPITATION EVENTS
ZONING
ENSO EVENTS
NEA REGION
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:11336/158133
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Variability of extreme precipitation events in the Northeastern Argentine regionAliaga, Vanina SolangePiccolo, Maria CintiaEXTREME PRECIPITATION EVENTSZONINGENSO EVENTSNEA REGIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Northeastern Argentine (NEA) region is one of the most productive and vulnerable to climate risk due to frequent extreme precipitation events (EPE). The present study aims to identify and explain the spatiotemporal distribution of precipitation in the NEA region to assess its heterogeneity. A cluster analysis from Ward’s hierarchical method was applied using observational precipitation collected at meteorological stations during 1959–2018. The elbow method and a nonhierarchical analysis of K-means were also useful to define the correct number of clusters. The three groups obtained responded to an east-west precipitation gradient that generated a zonal atmospheric circulation, and the positive anomalies mostly coincided with El Niño-Southern Oscillation (ENSO) events. Although they had similar seasonal rainfall and annual amplitudes, each subregion presented its specific variability at different temporal scales. Positive anomalies were more significant in the east of the NEA region, which is reflected in the displacement of isohyets in the last decades. Our results suggest that almost the entire NEA region is highly vulnerable to EPE, but with higher intensity and frequency in the center and east. Due to the agricultural and ecological importance of this region and the socioeconomic effects of EPE, studies with more detailed scales than the regional ones are necessary.Fil: Aliaga, Vanina Solange. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; ArgentinaFil: Piccolo, Maria Cintia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur. Departamento de Geografía y Turismo; ArgentinaSpringer Wien2021-06-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/158133Aliaga, Vanina Solange; Piccolo, Maria Cintia; Variability of extreme precipitation events in the Northeastern Argentine region; Springer Wien; Theory & Application Climatology; 145; 9-6-2021; 955-9650177-798XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s00704-021-03659-0info:eu-repo/semantics/altIdentifier/doi/10.1007/s00704-021-03659-0info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:01Zoai:ri.conicet.gov.ar:11336/158133instacron: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:34982025-09-29 09:46:01.696CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Variability of extreme precipitation events in the Northeastern Argentine region
title Variability of extreme precipitation events in the Northeastern Argentine region
spellingShingle Variability of extreme precipitation events in the Northeastern Argentine region
Aliaga, Vanina Solange
EXTREME PRECIPITATION EVENTS
ZONING
ENSO EVENTS
NEA REGION
title_short Variability of extreme precipitation events in the Northeastern Argentine region
title_full Variability of extreme precipitation events in the Northeastern Argentine region
title_fullStr Variability of extreme precipitation events in the Northeastern Argentine region
title_full_unstemmed Variability of extreme precipitation events in the Northeastern Argentine region
title_sort Variability of extreme precipitation events in the Northeastern Argentine region
dc.creator.none.fl_str_mv Aliaga, Vanina Solange
Piccolo, Maria Cintia
author Aliaga, Vanina Solange
author_facet Aliaga, Vanina Solange
Piccolo, Maria Cintia
author_role author
author2 Piccolo, Maria Cintia
author2_role author
dc.subject.none.fl_str_mv EXTREME PRECIPITATION EVENTS
ZONING
ENSO EVENTS
NEA REGION
topic EXTREME PRECIPITATION EVENTS
ZONING
ENSO EVENTS
NEA REGION
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 Northeastern Argentine (NEA) region is one of the most productive and vulnerable to climate risk due to frequent extreme precipitation events (EPE). The present study aims to identify and explain the spatiotemporal distribution of precipitation in the NEA region to assess its heterogeneity. A cluster analysis from Ward’s hierarchical method was applied using observational precipitation collected at meteorological stations during 1959–2018. The elbow method and a nonhierarchical analysis of K-means were also useful to define the correct number of clusters. The three groups obtained responded to an east-west precipitation gradient that generated a zonal atmospheric circulation, and the positive anomalies mostly coincided with El Niño-Southern Oscillation (ENSO) events. Although they had similar seasonal rainfall and annual amplitudes, each subregion presented its specific variability at different temporal scales. Positive anomalies were more significant in the east of the NEA region, which is reflected in the displacement of isohyets in the last decades. Our results suggest that almost the entire NEA region is highly vulnerable to EPE, but with higher intensity and frequency in the center and east. Due to the agricultural and ecological importance of this region and the socioeconomic effects of EPE, studies with more detailed scales than the regional ones are necessary.
Fil: Aliaga, Vanina Solange. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Fil: Piccolo, Maria Cintia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur. Departamento de Geografía y Turismo; Argentina
description The Northeastern Argentine (NEA) region is one of the most productive and vulnerable to climate risk due to frequent extreme precipitation events (EPE). The present study aims to identify and explain the spatiotemporal distribution of precipitation in the NEA region to assess its heterogeneity. A cluster analysis from Ward’s hierarchical method was applied using observational precipitation collected at meteorological stations during 1959–2018. The elbow method and a nonhierarchical analysis of K-means were also useful to define the correct number of clusters. The three groups obtained responded to an east-west precipitation gradient that generated a zonal atmospheric circulation, and the positive anomalies mostly coincided with El Niño-Southern Oscillation (ENSO) events. Although they had similar seasonal rainfall and annual amplitudes, each subregion presented its specific variability at different temporal scales. Positive anomalies were more significant in the east of the NEA region, which is reflected in the displacement of isohyets in the last decades. Our results suggest that almost the entire NEA region is highly vulnerable to EPE, but with higher intensity and frequency in the center and east. Due to the agricultural and ecological importance of this region and the socioeconomic effects of EPE, studies with more detailed scales than the regional ones are necessary.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-09
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/11336/158133
Aliaga, Vanina Solange; Piccolo, Maria Cintia; Variability of extreme precipitation events in the Northeastern Argentine region; Springer Wien; Theory & Application Climatology; 145; 9-6-2021; 955-965
0177-798X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/158133
identifier_str_mv Aliaga, Vanina Solange; Piccolo, Maria Cintia; Variability of extreme precipitation events in the Northeastern Argentine region; Springer Wien; Theory & Application Climatology; 145; 9-6-2021; 955-965
0177-798X
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://link.springer.com/10.1007/s00704-021-03659-0
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00704-021-03659-0
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 Wien
publisher.none.fl_str_mv Springer Wien
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 13.069144

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