Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America

Understanding the climate and its variability, in particular with regard to their socioeconomic impact, requires specific measurements of precipitation and temperature and their circulations. This becomes more important in applications to diverse systems. In order to improve knowledge about temporal...

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Detalles Bibliográficos
Autores principales:	Vargas, Walter Mario, Naumann, Gustavo
Publicado:	2008
Materias:	Daily temperatures Low frequency variability Reference series
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14363798_v8_n2_p45_Vargas http://hdl.handle.net/20.500.12110/paper_14363798_v8_n2_p45_Vargas
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_14363798_v8_n2_p45_Vargas
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spelling	paper:paper_14363798_v8_n2_p45_Vargas2023-06-08T16:15:43Z Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America Vargas, Walter Mario Naumann, Gustavo Daily temperatures Low frequency variability Reference series Understanding the climate and its variability, in particular with regard to their socioeconomic impact, requires specific measurements of precipitation and temperature and their circulations. This becomes more important in applications to diverse systems. In order to improve knowledge about temporal changes and trends in temperature, we analyzed series of maximum and minimum daily surface temperatures at eight reference stations in southeastern South America during variable periods, with the longest periods of around 100 years. To study the evolution of the temperature series and to reduce the number of parameters, a nonhierarchical cluster analysis was performed. The algorithm assigns each day to one of four groups: warm, wet, cold and dry. Low frequency variations were found in these groups and their association with circulation structure, circulation patterns and precipitation. We concluded that the set of wet days is one of the main factors driving secular variations of maximum and minimum temperature and variations in precipitation. We also inferred that after 1920 till 1930, a low frequency oscillation is observed in the form of linear trends (increase of warm days and decrease of cold days). © 2008 Springer-Verlag. Fil:Vargas, W.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Naumann, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14363798_v8_n2_p45_Vargas http://hdl.handle.net/20.500.12110/paper_14363798_v8_n2_p45_Vargas
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Daily temperatures Low frequency variability Reference series
spellingShingle	Daily temperatures Low frequency variability Reference series Vargas, Walter Mario Naumann, Gustavo Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America
topic_facet	Daily temperatures Low frequency variability Reference series
description	Understanding the climate and its variability, in particular with regard to their socioeconomic impact, requires specific measurements of precipitation and temperature and their circulations. This becomes more important in applications to diverse systems. In order to improve knowledge about temporal changes and trends in temperature, we analyzed series of maximum and minimum daily surface temperatures at eight reference stations in southeastern South America during variable periods, with the longest periods of around 100 years. To study the evolution of the temperature series and to reduce the number of parameters, a nonhierarchical cluster analysis was performed. The algorithm assigns each day to one of four groups: warm, wet, cold and dry. Low frequency variations were found in these groups and their association with circulation structure, circulation patterns and precipitation. We concluded that the set of wet days is one of the main factors driving secular variations of maximum and minimum temperature and variations in precipitation. We also inferred that after 1920 till 1930, a low frequency oscillation is observed in the form of linear trends (increase of warm days and decrease of cold days). © 2008 Springer-Verlag.
author	Vargas, Walter Mario Naumann, Gustavo
author_facet	Vargas, Walter Mario Naumann, Gustavo
author_sort	Vargas, Walter Mario
title	Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America
title_short	Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America
title_full	Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America
title_fullStr	Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America
title_full_unstemmed	Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America
title_sort	impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern south america
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14363798_v8_n2_p45_Vargas http://hdl.handle.net/20.500.12110/paper_14363798_v8_n2_p45_Vargas
work_keys_str_mv	AT vargaswaltermario impactsofclimaticchangeandlowfrequencyvariabilityinreferenceseriesondailymaximumandminimumtemperatureinsouthernsouthamerica AT naumanngustavo impactsofclimaticchangeandlowfrequencyvariabilityinreferenceseriesondailymaximumandminimumtemperatureinsouthernsouthamerica
_version_	1768542954609180672

Impacts of climatic change and low frequency variability in reference series on daily maximum and minimum temperature in southern South America

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