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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/158133
Ver los metadatos del registro completo
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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 Técnicas2025-09-03T09:50:41Zoai: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:34982025-09-03 09:50:41.999CONICET 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 |
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CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
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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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13.13397 |