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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1997
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paper:paper_0936577X_v9_n1-2_p121_Carril2023-06-08T15:53:20Z Impacts of climate change on the oases of the Argentinean cordillera Carril, Andrea Fabiana Doyle, Moira Evelina Barros, Vicente Ricardo Nuñez, Mario Néstor 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. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0936577X_v9_n1-2_p121_Carril 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, Andrea Fabiana Doyle, Moira Evelina Barros, Vicente Ricardo Nuñez, Mario Néstor 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. |
| author |
Carril, Andrea Fabiana Doyle, Moira Evelina Barros, Vicente Ricardo Nuñez, Mario Néstor |
| author_facet |
Carril, Andrea Fabiana Doyle, Moira Evelina Barros, Vicente Ricardo Nuñez, Mario Néstor |
| author_sort |
Carril, Andrea Fabiana |
| 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 |
| publishDate |
1997 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0936577X_v9_n1-2_p121_Carril http://hdl.handle.net/20.500.12110/paper_0936577X_v9_n1-2_p121_Carril |
| work_keys_str_mv |
AT carrilandreafabiana impactsofclimatechangeontheoasesoftheargentineancordillera AT doylemoiraevelina impactsofclimatechangeontheoasesoftheargentineancordillera AT barrosvicentericardo impactsofclimatechangeontheoasesoftheargentineancordillera AT nunezmarionestor impactsofclimatechangeontheoasesoftheargentineancordillera |
| _version_ |
1768542421128314880 |