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Abstract:

A Singular value decomposition (SVD) analysis was performed jointly on the daily intensity of extreme rainfall (DIER) over Argentina and the sea surface temperature (SST) of all the oceans from 17.5°N to 90°S in order to identify the large-scale variability of the SSTs related to extreme rainfall, in the period 1962-2005. The main objective of the article is to objectively recognize regions of the tropical and subtropical oceans that could be related with the extreme rainfall over Argentina. Spring is the season that is best represented by the first mode, accounting for up to 45% of the covariance between the DIER and SST. The first SVD mode of spring, summer and autumn presents a pattern of SST relating to the El Niño-Southern Oscillations (ENSO) phenomena with an enhanced DIER in different zones of centre and east of Argentina. In the second SVD mode of spring and summer, the SST patterns show cold conditions in the tropical and subtropical Atlantic and near Indonesia with an enhancement of the DIER in the centre and east of Argentina. These modes show a significant decadal variability. In the third SVD mode of spring and summer, the SST patterns present warm and cold conditions in the Indian Ocean and the centre and western Pacific Ocean (PO) with decreased rainfall in the northern and eastern portion of Argentina, respectively. This mode shows a significant period of temporal variability of around 14 years. The third mode of autumn presents warm conditions in the tropical Atlantic and the southwest PO with a low DIER in the centre and east of Argentina. This mode also presents temporal variability of around 14 years. The correlation between each mode derived from analysis of SVD and climate indices related with SST were computed. © 2012 Royal Meteorological Society.

Registro:

Documento: Artículo
Título:Teleconnections between tropical-extratropical oceans and the daily intensity of extreme rainfall over Argentina
Autor:Robledo, F.A.; Penalba, O.C.; Bettolli, M.L.
Filiación:Consejo Nacional de Investigaciones Científicas y Técnicas, FCEN UBA, Buenos Aires, Argentina
Departamento de Atmósfera y los Océanos, FCEN UBA, Buenos Aires, Argentina
Palabras clave:Argentina; Daily precipitation; Teleconnections; Tropical oceans; Argentina; Climate index; Cold conditions; Decadal variability; Extreme rainfall; Indian ocean; Indonesia; Sea surface temperature (SST); Subtropical ocean; Teleconnections; Temporal variability; Tropical atlantic; Tropical ocean; Warm conditions; Western Pacific; Atmospheric pressure; Atmospheric temperature; Nickel compounds; Oceanography; Singular value decomposition; Tropics; air-sea interaction; El Nino-Southern Oscillation; extratropical environment; extreme event; precipitation assessment; rainfall; sea surface temperature; teleconnection; tropical region; Argentina; Atlantic Ocean; Atlantic Ocean (Subtropical); Atlantic Ocean (Tropical); Indian Ocean; Pacific Ocean; Pacific Ocean (West)
Año:2013
Volumen:33
Número:3
Página de inicio:735
Página de fin:745
DOI: http://dx.doi.org/10.1002/joc.3467
Handle:http://hdl.handle.net/20.500.12110/paper_08998418_v33_n3_p735_Robledo
Título revista:International Journal of Climatology
Título revista abreviado:Int. J. Climatol.
ISSN:08998418
CODEN:IJCLE
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_08998418_v33_n3_p735_Robledo.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08998418_v33_n3_p735_Robledo

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Citas:

---------- APA ----------
Robledo, F.A., Penalba, O.C. & Bettolli, M.L. (2013) . Teleconnections between tropical-extratropical oceans and the daily intensity of extreme rainfall over Argentina. International Journal of Climatology, 33(3), 735-745.
http://dx.doi.org/10.1002/joc.3467
---------- CHICAGO ----------
Robledo, F.A., Penalba, O.C., Bettolli, M.L. "Teleconnections between tropical-extratropical oceans and the daily intensity of extreme rainfall over Argentina" . International Journal of Climatology 33, no. 3 (2013) : 735-745.
http://dx.doi.org/10.1002/joc.3467
---------- MLA ----------
Robledo, F.A., Penalba, O.C., Bettolli, M.L. "Teleconnections between tropical-extratropical oceans and the daily intensity of extreme rainfall over Argentina" . International Journal of Climatology, vol. 33, no. 3, 2013, pp. 735-745.
http://dx.doi.org/10.1002/joc.3467
---------- VANCOUVER ----------
Robledo, F.A., Penalba, O.C., Bettolli, M.L. Teleconnections between tropical-extratropical oceans and the daily intensity of extreme rainfall over Argentina. Int. J. Climatol. 2013;33(3):735-745.
http://dx.doi.org/10.1002/joc.3467