Threshold level approach for streamflow drought analysis in the Central Andes of Argentina: a climatological assessment
A streamflow drought climatology was developed over the Central Andes of Argentina, a semi-arid region highly vulnerable to climatic variations, based on the analysis of daily historical streamflow records. A threshold level approach was applied on a daily basis for three different severity levels i...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02626667_v62_n12_p1949_Rivera http://hdl.handle.net/20.500.12110/paper_02626667_v62_n12_p1949_Rivera |
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paper:paper_02626667_v62_n12_p1949_Rivera2025-07-30T18:01:10Z Threshold level approach for streamflow drought analysis in the Central Andes of Argentina: a climatological assessment Argentina Central Andes climatology streamflow drought temporal variability water resources Climatology Stream flow Water resources Argentina Central Andes Decadal variations Drought conditions Pacific decadal oscillation Streamflow records Temporal variability Tropical Pacific ocean Drought climate change climatology drought La Nina Pacific Decadal Oscillation streamflow temporal variation threshold water level Andes Argentina Pacific Ocean Pacific Ocean (Tropical) A streamflow drought climatology was developed over the Central Andes of Argentina, a semi-arid region highly vulnerable to climatic variations, based on the analysis of daily historical streamflow records. A threshold level approach was applied on a daily basis for three different severity levels in order to depict the main characteristics of droughts–number of drought events, mean duration and mean severity–over the period 1957–2014. Based on three annual indices that summarize the frequency of drought events, their duration and severity, we identified the main regional dry periods and the main modes of variability through an empirical decomposition. These modes are linked to La Niña conditions on inter-annual time scales and the Pacific Decadal Oscillation for the decadal variations, showing the influence of the tropical Pacific Ocean in the development of streamflow drought conditions and its relevance for potential predictability of hydroclimatic variations over the region. © 2017 IAHS. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02626667_v62_n12_p1949_Rivera http://hdl.handle.net/20.500.12110/paper_02626667_v62_n12_p1949_Rivera |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentina Central Andes climatology streamflow drought temporal variability water resources Climatology Stream flow Water resources Argentina Central Andes Decadal variations Drought conditions Pacific decadal oscillation Streamflow records Temporal variability Tropical Pacific ocean Drought climate change climatology drought La Nina Pacific Decadal Oscillation streamflow temporal variation threshold water level Andes Argentina Pacific Ocean Pacific Ocean (Tropical) |
| spellingShingle |
Argentina Central Andes climatology streamflow drought temporal variability water resources Climatology Stream flow Water resources Argentina Central Andes Decadal variations Drought conditions Pacific decadal oscillation Streamflow records Temporal variability Tropical Pacific ocean Drought climate change climatology drought La Nina Pacific Decadal Oscillation streamflow temporal variation threshold water level Andes Argentina Pacific Ocean Pacific Ocean (Tropical) Threshold level approach for streamflow drought analysis in the Central Andes of Argentina: a climatological assessment |
| topic_facet |
Argentina Central Andes climatology streamflow drought temporal variability water resources Climatology Stream flow Water resources Argentina Central Andes Decadal variations Drought conditions Pacific decadal oscillation Streamflow records Temporal variability Tropical Pacific ocean Drought climate change climatology drought La Nina Pacific Decadal Oscillation streamflow temporal variation threshold water level Andes Argentina Pacific Ocean Pacific Ocean (Tropical) |
| description |
A streamflow drought climatology was developed over the Central Andes of Argentina, a semi-arid region highly vulnerable to climatic variations, based on the analysis of daily historical streamflow records. A threshold level approach was applied on a daily basis for three different severity levels in order to depict the main characteristics of droughts–number of drought events, mean duration and mean severity–over the period 1957–2014. Based on three annual indices that summarize the frequency of drought events, their duration and severity, we identified the main regional dry periods and the main modes of variability through an empirical decomposition. These modes are linked to La Niña conditions on inter-annual time scales and the Pacific Decadal Oscillation for the decadal variations, showing the influence of the tropical Pacific Ocean in the development of streamflow drought conditions and its relevance for potential predictability of hydroclimatic variations over the region. © 2017 IAHS. |
| title |
Threshold level approach for streamflow drought analysis in the Central Andes of Argentina: a climatological assessment |
| title_short |
Threshold level approach for streamflow drought analysis in the Central Andes of Argentina: a climatological assessment |
| title_full |
Threshold level approach for streamflow drought analysis in the Central Andes of Argentina: a climatological assessment |
| title_fullStr |
Threshold level approach for streamflow drought analysis in the Central Andes of Argentina: a climatological assessment |
| title_full_unstemmed |
Threshold level approach for streamflow drought analysis in the Central Andes of Argentina: a climatological assessment |
| title_sort |
threshold level approach for streamflow drought analysis in the central andes of argentina: a climatological assessment |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02626667_v62_n12_p1949_Rivera http://hdl.handle.net/20.500.12110/paper_02626667_v62_n12_p1949_Rivera |
| _version_ |
1840327557997658112 |