Impacts of climate change on the oases of the Argentinean cordillera

Until the mid 1970s a negative trend in the river flow values in the Argentinean provinces of San Juan and Mendoza (Cuyo region) was observed. The prevailing critical conditions and their economic and social impacts provide a basis for the characterization of an adverse climate change scenario for t...

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Autores principales:	Carril, A.F., Doyle, M.E., Barros, V.R., Núñez, M.N.
Formato:	JOUR
Materias:	Climate change Flow anomalies Rivers of the Cuyo region Sea-surface temperatures Southern Oscillation climate change drought El Nino/Southern Oscillation ENSO nature-society relations oases river flow sea surface temperature water resources Argentina, Mendoza Province Argentina, San Juan Province
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0936577X_v9_n1-2_p121_Carril
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0936577X_v9_n1-2_p121_Carril
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spelling	todo:paper_0936577X_v9_n1-2_p121_Carril2023-10-03T15:48:42Z Impacts of climate change on the oases of the Argentinean cordillera Carril, A.F. Doyle, M.E. Barros, V.R. Núñez, M.N. Climate change Flow anomalies Rivers of the Cuyo region Sea-surface temperatures Southern Oscillation climate change drought El Nino/Southern Oscillation ENSO nature-society relations oases river flow sea surface temperature Southern Oscillation water resources Argentina, Mendoza Province Argentina, San Juan Province Until the mid 1970s a negative trend in the river flow values in the Argentinean provinces of San Juan and Mendoza (Cuyo region) was observed. The prevailing critical conditions and their economic and social impacts provide a basis for the characterization of an adverse climate change scenario for the region. The causes of the early 1970s scenario were assessed in this study in order to determine whether or not it could be related to global warming conditions. River flows are dependent on winter precipitation and on accumulated snow on the Andes cordillera. The lowest negative river flow value observed can be explained by the behaviour of the Southern Oscillation Index (SOI) and other macroclimatic parameters, such as sea-surface temperatures (SSTs) of the Atlantic and Pacific oceans. It was observed that the SOI is the parameter most strongly correlated with river flows. The highest correlation was found for the 2.4- and 4.8-yr frequencies and the low 43-yr frequency. Consequently, the low river flow values observed during the early 1970s are considered to be related to a low-frequency minimum of the El Niño-Southern Oscillation (ENSO), as well as to the behaviour of sea-surface temperature close to the coast of Chile. Both factors are associated with a minimum hemispheric temperature value. It is concluded that the 1960-70 drought in the oases of the Cordillera was not linked to a warm period. Therefore it is not appropriate, at least for the time being, to state that the oases will experience drought conditions under a global warming scenario with temperature increases of a few degrees. Fil:Carril, A.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Doyle, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Barros, V.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Núñez, M.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0936577X_v9_n1-2_p121_Carril
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Climate change Flow anomalies Rivers of the Cuyo region Sea-surface temperatures Southern Oscillation climate change drought El Nino/Southern Oscillation ENSO nature-society relations oases river flow sea surface temperature Southern Oscillation water resources Argentina, Mendoza Province Argentina, San Juan Province
spellingShingle	Climate change Flow anomalies Rivers of the Cuyo region Sea-surface temperatures Southern Oscillation climate change drought El Nino/Southern Oscillation ENSO nature-society relations oases river flow sea surface temperature Southern Oscillation water resources Argentina, Mendoza Province Argentina, San Juan Province Carril, A.F. Doyle, M.E. Barros, V.R. Núñez, M.N. Impacts of climate change on the oases of the Argentinean cordillera
topic_facet	Climate change Flow anomalies Rivers of the Cuyo region Sea-surface temperatures Southern Oscillation climate change drought El Nino/Southern Oscillation ENSO nature-society relations oases river flow sea surface temperature Southern Oscillation water resources Argentina, Mendoza Province Argentina, San Juan Province
description	Until the mid 1970s a negative trend in the river flow values in the Argentinean provinces of San Juan and Mendoza (Cuyo region) was observed. The prevailing critical conditions and their economic and social impacts provide a basis for the characterization of an adverse climate change scenario for the region. The causes of the early 1970s scenario were assessed in this study in order to determine whether or not it could be related to global warming conditions. River flows are dependent on winter precipitation and on accumulated snow on the Andes cordillera. The lowest negative river flow value observed can be explained by the behaviour of the Southern Oscillation Index (SOI) and other macroclimatic parameters, such as sea-surface temperatures (SSTs) of the Atlantic and Pacific oceans. It was observed that the SOI is the parameter most strongly correlated with river flows. The highest correlation was found for the 2.4- and 4.8-yr frequencies and the low 43-yr frequency. Consequently, the low river flow values observed during the early 1970s are considered to be related to a low-frequency minimum of the El Niño-Southern Oscillation (ENSO), as well as to the behaviour of sea-surface temperature close to the coast of Chile. Both factors are associated with a minimum hemispheric temperature value. It is concluded that the 1960-70 drought in the oases of the Cordillera was not linked to a warm period. Therefore it is not appropriate, at least for the time being, to state that the oases will experience drought conditions under a global warming scenario with temperature increases of a few degrees.
format	JOUR
author	Carril, A.F. Doyle, M.E. Barros, V.R. Núñez, M.N.
author_facet	Carril, A.F. Doyle, M.E. Barros, V.R. Núñez, M.N.
author_sort	Carril, A.F.
title	Impacts of climate change on the oases of the Argentinean cordillera
title_short	Impacts of climate change on the oases of the Argentinean cordillera
title_full	Impacts of climate change on the oases of the Argentinean cordillera
title_fullStr	Impacts of climate change on the oases of the Argentinean cordillera
title_full_unstemmed	Impacts of climate change on the oases of the Argentinean cordillera
title_sort	impacts of climate change on the oases of the argentinean cordillera
url	http://hdl.handle.net/20.500.12110/paper_0936577X_v9_n1-2_p121_Carril
work_keys_str_mv	AT carrilaf impactsofclimatechangeontheoasesoftheargentineancordillera AT doyleme impactsofclimatechangeontheoasesoftheargentineancordillera AT barrosvr impactsofclimatechangeontheoasesoftheargentineancordillera AT nunezmn impactsofclimatechangeontheoasesoftheargentineancordillera
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Impacts of climate change on the oases of the Argentinean cordillera

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