Inter-annual and inter-decadal variability of dry days in Argentina

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This work proposes to employ the number of dry days (days without precipitation) as a variable of study, and to analyse their spatial and temporal variability in Argentina. Climatological aspects of dry days, such as their annual mean values and its seasonal cycle, were discussed and compared with p...

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Autores principales: Rivera, J.A., Penalba, O.C., Betolli, M.L.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2013
Materias:
Argentina
Climatology
Dry days
Linear trends
Wavelet analysis
Time series analysis
Cubic polynomials
Inter-decadal variability
Interannual variation
Patagonian coasts
Seasonal cycle
Spatial and temporal variability
Low pass filters
annual variation
decadal variation
regional climate
seasonal variation
spatial variation
temporal variation
trend analysis
twentieth century
wavelet analysis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08998418_v33_n4_p834_Rivera
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_08998418_v33_n4_p834_Rivera
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spelling paperaa:paper_08998418_v33_n4_p834_Rivera2023-06-12T16:48:33Z Inter-annual and inter-decadal variability of dry days in Argentina Int. J. Climatol. 2013;33(4):834-842 Rivera, J.A. Penalba, O.C. Betolli, M.L. Argentina Climatology Dry days Linear trends Wavelet analysis Climatology Time series analysis Wavelet analysis Argentina Cubic polynomials Inter-decadal variability Interannual variation Linear trends Patagonian coasts Seasonal cycle Spatial and temporal variability Low pass filters annual variation decadal variation regional climate seasonal variation spatial variation temporal variation trend analysis twentieth century wavelet analysis Argentina This work proposes to employ the number of dry days (days without precipitation) as a variable of study, and to analyse their spatial and temporal variability in Argentina. Climatological aspects of dry days, such as their annual mean values and its seasonal cycle, were discussed and compared with precipitation features in the country. Linear trends in the annual number of dry days (ANDD) were identified for the period 1960-2005. Most of the regions exhibited decreasing trends, but few stations showed significant ones. The most important trends were present in the Central-West region and over the Patagonian coast and their magnitudes indicated a decrease of two to six dry days per decade. These trends coincide with the observed increase of accumulated precipitation in part of the country during the second half of the 20th century. To identify long-term fluctuations in the ANDD, a low pass filter, a wavelet analysis and a cubic polynomial fit was applied to the longest time series of the selected locations. Through these methodologies, periodicities were identified in the inter-annual and inter-decadal ranges for the last 80 years. The most important significant cycles were observed in the range of 10-24 years, but also, depending on the region, significant inter-annual variations were found. © 2012 Royal Meteorological Society. Fil:Penalba, O.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08998418_v33_n4_p834_Rivera
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Argentina
Climatology
Dry days
Linear trends
Wavelet analysis
Climatology
Time series analysis
Wavelet analysis
Argentina
Cubic polynomials
Inter-decadal variability
Interannual variation
Linear trends
Patagonian coasts
Seasonal cycle
Spatial and temporal variability
Low pass filters
annual variation
decadal variation
regional climate
seasonal variation
spatial variation
temporal variation
trend analysis
twentieth century
wavelet analysis
Argentina
spellingShingle Argentina
Climatology
Dry days
Linear trends
Wavelet analysis
Climatology
Time series analysis
Wavelet analysis
Argentina
Cubic polynomials
Inter-decadal variability
Interannual variation
Linear trends
Patagonian coasts
Seasonal cycle
Spatial and temporal variability
Low pass filters
annual variation
decadal variation
regional climate
seasonal variation
spatial variation
temporal variation
trend analysis
twentieth century
wavelet analysis
Argentina
Rivera, J.A.
Penalba, O.C.
Betolli, M.L.
Inter-annual and inter-decadal variability of dry days in Argentina
topic_facet Argentina
Climatology
Dry days
Linear trends
Wavelet analysis
Climatology
Time series analysis
Wavelet analysis
Argentina
Cubic polynomials
Inter-decadal variability
Interannual variation
Linear trends
Patagonian coasts
Seasonal cycle
Spatial and temporal variability
Low pass filters
annual variation
decadal variation
regional climate
seasonal variation
spatial variation
temporal variation
trend analysis
twentieth century
wavelet analysis
Argentina
description This work proposes to employ the number of dry days (days without precipitation) as a variable of study, and to analyse their spatial and temporal variability in Argentina. Climatological aspects of dry days, such as their annual mean values and its seasonal cycle, were discussed and compared with precipitation features in the country. Linear trends in the annual number of dry days (ANDD) were identified for the period 1960-2005. Most of the regions exhibited decreasing trends, but few stations showed significant ones. The most important trends were present in the Central-West region and over the Patagonian coast and their magnitudes indicated a decrease of two to six dry days per decade. These trends coincide with the observed increase of accumulated precipitation in part of the country during the second half of the 20th century. To identify long-term fluctuations in the ANDD, a low pass filter, a wavelet analysis and a cubic polynomial fit was applied to the longest time series of the selected locations. Through these methodologies, periodicities were identified in the inter-annual and inter-decadal ranges for the last 80 years. The most important significant cycles were observed in the range of 10-24 years, but also, depending on the region, significant inter-annual variations were found. © 2012 Royal Meteorological Society.
format Artículo
Artículo
publishedVersion
author Rivera, J.A.
Penalba, O.C.
Betolli, M.L.
author_facet Rivera, J.A.
Penalba, O.C.
Betolli, M.L.
author_sort Rivera, J.A.
title Inter-annual and inter-decadal variability of dry days in Argentina
title_short Inter-annual and inter-decadal variability of dry days in Argentina
title_full Inter-annual and inter-decadal variability of dry days in Argentina
title_fullStr Inter-annual and inter-decadal variability of dry days in Argentina
title_full_unstemmed Inter-annual and inter-decadal variability of dry days in Argentina
title_sort inter-annual and inter-decadal variability of dry days in argentina
publishDate 2013
url http://hdl.handle.net/20.500.12110/paper_08998418_v33_n4_p834_Rivera
work_keys_str_mv AT riveraja interannualandinterdecadalvariabilityofdrydaysinargentina
AT penalbaoc interannualandinterdecadalvariabilityofdrydaysinargentina
AT betolliml interannualandinterdecadalvariabilityofdrydaysinargentina
_version_ 1769810237052682240

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