Rainfall patterns and the relation to atmospheric circulation in northern Patagonia (Argentina)

The aim of this chapter is to establish the relationship between the mean annual rainfall and river flows and assess climate and oceanic climate forcing of interannual rainfall variability in northern Patagonia region in Argentina. In this region four major rivers are present: Limay, Neuquen, Negro...

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Detalles Bibliográficos
Autor principal: Gonzalez, Marcela Hebe
Publicado: 2015
Materias:
Cesium compounds
Climatology
Financial data processing
Flow of water
Microcomputers
Principal component analysis
Rivers
Atmospheric circulation
Behavior patterns
Hydrological years
Interannual rainfall
Interannual variability
Northern patagonia
Positive rainfall anomalies
Principal component
Rain
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97816348_v41_n_p85_Gonzalez
http://hdl.handle.net/20.500.12110/paper_97816348_v41_n_p85_Gonzalez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_97816348_v41_n_p85_Gonzalez
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spelling paper:paper_97816348_v41_n_p85_Gonzalez2023-06-08T16:38:34Z Rainfall patterns and the relation to atmospheric circulation in northern Patagonia (Argentina) Gonzalez, Marcela Hebe Cesium compounds Climatology Financial data processing Flow of water Microcomputers Principal component analysis Rivers Atmospheric circulation Behavior patterns Hydrological years Interannual rainfall Interannual variability Northern patagonia Positive rainfall anomalies Principal component Rain The aim of this chapter is to establish the relationship between the mean annual rainfall and river flows and assess climate and oceanic climate forcing of interannual rainfall variability in northern Patagonia region in Argentina. In this region four major rivers are present: Limay, Neuquen, Negro and Colorado. A principal component (PC) method was applied to annual rainfall anomalies in order to detect behavior patterns in different years. Eight PCs resulted significant explaining 83,5% of the rainfall anomalies variance. Therefore, eight spatial patterns were described and years could be classified in different groups according to these patterns. Temporal series derived from this analysis were correlated with the mean annual flow during the hydrological year in each river. Only the first eigenvector was significantly correlated with Limay, Neuquen and Negro flows showing that positive rainfall anomalies near the Andes Mountain determined positive river flow anomalies. But none significant correlation was detected for Colorado River. Relation between climate forcing of interannual variability (for example ENSO) and rainfall anomalies patterns was analyzed and encouraging results were found. © 2015 Nova Science Publishers, Inc. Fil:González, M.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97816348_v41_n_p85_Gonzalez http://hdl.handle.net/20.500.12110/paper_97816348_v41_n_p85_Gonzalez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cesium compounds
Climatology
Financial data processing
Flow of water
Microcomputers
Principal component analysis
Rivers
Atmospheric circulation
Behavior patterns
Hydrological years
Interannual rainfall
Interannual variability
Northern patagonia
Positive rainfall anomalies
Principal component
Rain
spellingShingle Cesium compounds
Climatology
Financial data processing
Flow of water
Microcomputers
Principal component analysis
Rivers
Atmospheric circulation
Behavior patterns
Hydrological years
Interannual rainfall
Interannual variability
Northern patagonia
Positive rainfall anomalies
Principal component
Rain
Gonzalez, Marcela Hebe
Rainfall patterns and the relation to atmospheric circulation in northern Patagonia (Argentina)
topic_facet Cesium compounds
Climatology
Financial data processing
Flow of water
Microcomputers
Principal component analysis
Rivers
Atmospheric circulation
Behavior patterns
Hydrological years
Interannual rainfall
Interannual variability
Northern patagonia
Positive rainfall anomalies
Principal component
Rain
description The aim of this chapter is to establish the relationship between the mean annual rainfall and river flows and assess climate and oceanic climate forcing of interannual rainfall variability in northern Patagonia region in Argentina. In this region four major rivers are present: Limay, Neuquen, Negro and Colorado. A principal component (PC) method was applied to annual rainfall anomalies in order to detect behavior patterns in different years. Eight PCs resulted significant explaining 83,5% of the rainfall anomalies variance. Therefore, eight spatial patterns were described and years could be classified in different groups according to these patterns. Temporal series derived from this analysis were correlated with the mean annual flow during the hydrological year in each river. Only the first eigenvector was significantly correlated with Limay, Neuquen and Negro flows showing that positive rainfall anomalies near the Andes Mountain determined positive river flow anomalies. But none significant correlation was detected for Colorado River. Relation between climate forcing of interannual variability (for example ENSO) and rainfall anomalies patterns was analyzed and encouraging results were found. © 2015 Nova Science Publishers, Inc.
author Gonzalez, Marcela Hebe
author_facet Gonzalez, Marcela Hebe
author_sort Gonzalez, Marcela Hebe
title Rainfall patterns and the relation to atmospheric circulation in northern Patagonia (Argentina)
title_short Rainfall patterns and the relation to atmospheric circulation in northern Patagonia (Argentina)
title_full Rainfall patterns and the relation to atmospheric circulation in northern Patagonia (Argentina)
title_fullStr Rainfall patterns and the relation to atmospheric circulation in northern Patagonia (Argentina)
title_full_unstemmed Rainfall patterns and the relation to atmospheric circulation in northern Patagonia (Argentina)
title_sort rainfall patterns and the relation to atmospheric circulation in northern patagonia (argentina)
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97816348_v41_n_p85_Gonzalez
http://hdl.handle.net/20.500.12110/paper_97816348_v41_n_p85_Gonzalez
work_keys_str_mv AT gonzalezmarcelahebe rainfallpatternsandtherelationtoatmosphericcirculationinnorthernpatagoniaargentina
_version_ 1769175792374251520

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