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dc.contributor.author
Lovino, Miguel Angel
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dc.contributor.author
Muller, Gabriela Viviana
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dc.contributor.author
Pierrestegui, Maria Josefina
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dc.contributor.author
Espinosa, Edna
dc.contributor.author
Rodriguez, Leticia Beatriz
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dc.date.available
2023-07-04T13:08:51Z
dc.date.issued
2022-02
dc.identifier.citation
Lovino, Miguel Angel; Muller, Gabriela Viviana; Pierrestegui, Maria Josefina; Espinosa, Edna; Rodriguez, Leticia Beatriz; Extreme precipitation events in the Austral Chaco region of Argentina; John Wiley & Sons Ltd; International Journal of Climatology; 42; 11; 2-2022; 5985-6006
dc.identifier.issn
0899-8418
dc.identifier.uri
http://hdl.handle.net/11336/202194
dc.description.abstract
This study assesses the intensity, spatial distribution and temporal variability of extreme precipitation events (EPEs) on different time scales relevant to agriculture and water resources during the 1901–2016 period over Argentina's Austral Chaco (ACh). EPEs were identified using a nonparametric approach for the Standardized Precipitation Index (SPI). The leading modes of SPI's variability were detected using the Singular Spectrum Analysis. We also compile and control the quality of precipitation observations in a scarcely monitored region. The limited number of stations conditions the interpolation of the GPCC v2018 database here used, mainly during the early twentieth century. The EPEs characterized by SPI at a 24-month time scale, which favour long-lasting water excesses or deficits with hydrological impacts, underwent two differentiated long-term periods: a dry one before 1960 and a wet one from 1960 to 2005. Consistently, seasonal wet EPEs were more frequent during the wet period while seasonal droughts were more frequent and with larger spatial extent during the dry period. Seasonal EPEs, represented by the SPI at 3-month time scale, can impact agriculture during the crops' critical growth period. Since 2006, the long-term wetting trend has been reversed. If this behaviour continues into the coming decades, more droughts and less wetness might be expected. The EPEs present a large interannual variability with 6.3- and 9-year significant cycles that, combined with long-term trends, favoured extremely wet/dry EPEs. Most of the wet/dry EPEs occurred during El Niño/La Niña events. Although this relationship is not straightforward, we found a discriminant ENSO signal between October of the year when an ENSO event starts and February of the next year. Finally, severely dry/wet EPEs tend to have large spatial extent in the ACh region. The central-eastern ACh region experiences the most extreme wet and dry conditions, which makes this area more prone to extreme EPEs.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Ltd
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AUSTRAL CHACO
dc.subject
BAJOS SUBMERIDIONALES
dc.subject
EXTREME PRECIPITATION EVENTS
dc.subject
STANDARDIZED PRECIPITATION INDEX
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Extreme precipitation events in the Austral Chaco region of Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-04T12:00:09Z
dc.journal.volume
42
dc.journal.number
11
dc.journal.pagination
5985-6006
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Lovino, Miguel Angel. Universidad Nacional del Litoral. Facultad de Ingenieria y Ciencias Hidricas. Centro de Estudios de Variabilidad y Cambio Climatico.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
dc.description.fil
Fil: Muller, Gabriela Viviana. Universidad Nacional del Litoral. Facultad de Ingenieria y Ciencias Hidricas. Centro de Estudios de Variabilidad y Cambio Climatico.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
dc.description.fil
Fil: Pierrestegui, Maria Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingenieria y Ciencias Hidricas. Centro de Estudios de Variabilidad y Cambio Climatico.; Argentina
dc.description.fil
Fil: Espinosa, Edna. Universidad Nacional del Litoral; Argentina
dc.description.fil
Fil: Rodriguez, Leticia Beatriz. Universidad Nacional del Litoral; Argentina
dc.journal.title
International Journal of Climatology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/joc.7572
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/joc.7572
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