Atmospheric circulation features associated to Argentinean Andean rivers discharge variability
Winter atmospheric circulation patterns and their relationship to runoff variability in the Atuel and Chubut rivers of Argentina are analyzed. The most important atmospheric low levels condition associated with high (low) Atuel discharges is the weakening (strengthening) of the mean atmospheric flow...
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| Formato: | JOUR |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00948276_v35_n1_p_Araneo |
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todo:paper_00948276_v35_n1_p_Araneo2023-10-03T14:56:31Z Atmospheric circulation features associated to Argentinean Andean rivers discharge variability Araneo, D.C. Compagnucci, R.H. Atmospheric pressure Discharge (fluid mechanics) Precipitation (meteorology) Rivers Runoff Storms Atmospheric circulation Wave pattern Atmospheric movements atmospheric circulation low pressure system river discharge runoff storm track Argentina Atuel River Chubut Chubut River Drake Passage South America Winter atmospheric circulation patterns and their relationship to runoff variability in the Atuel and Chubut rivers of Argentina are analyzed. The most important atmospheric low levels condition associated with high (low) Atuel discharges is the weakening (strengthening) of the mean atmospheric flow, while the same feature is displaced 5° southward for Chubut. At high levels, results suggest the existence of a NW-SE direction wave pattern extending from Australia to the South Atlantic, favoring positive (negative) pressure anomalies West of the Drake Passage, which deflect the storm tracks northward (southward) and hence increase (decrease) precipitations and subsequent Atuel discharges. In contrast, Chubut discharges are mainly controlled by a shorter wave pattern along the subtropical Pacific, which zonally crosses South America. This pattern helps to maintain low (high) pressure anomalies off the Chilean coast at the upper-river basin latitude for high (low) Chubut runoffs. Copyright 2008 by the American Geophysical Union. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00948276_v35_n1_p_Araneo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Atmospheric pressure Discharge (fluid mechanics) Precipitation (meteorology) Rivers Runoff Storms Atmospheric circulation Wave pattern Atmospheric movements atmospheric circulation low pressure system river discharge runoff storm track Argentina Atuel River Chubut Chubut River Drake Passage South America |
| spellingShingle |
Atmospheric pressure Discharge (fluid mechanics) Precipitation (meteorology) Rivers Runoff Storms Atmospheric circulation Wave pattern Atmospheric movements atmospheric circulation low pressure system river discharge runoff storm track Argentina Atuel River Chubut Chubut River Drake Passage South America Araneo, D.C. Compagnucci, R.H. Atmospheric circulation features associated to Argentinean Andean rivers discharge variability |
| topic_facet |
Atmospheric pressure Discharge (fluid mechanics) Precipitation (meteorology) Rivers Runoff Storms Atmospheric circulation Wave pattern Atmospheric movements atmospheric circulation low pressure system river discharge runoff storm track Argentina Atuel River Chubut Chubut River Drake Passage South America |
| description |
Winter atmospheric circulation patterns and their relationship to runoff variability in the Atuel and Chubut rivers of Argentina are analyzed. The most important atmospheric low levels condition associated with high (low) Atuel discharges is the weakening (strengthening) of the mean atmospheric flow, while the same feature is displaced 5° southward for Chubut. At high levels, results suggest the existence of a NW-SE direction wave pattern extending from Australia to the South Atlantic, favoring positive (negative) pressure anomalies West of the Drake Passage, which deflect the storm tracks northward (southward) and hence increase (decrease) precipitations and subsequent Atuel discharges. In contrast, Chubut discharges are mainly controlled by a shorter wave pattern along the subtropical Pacific, which zonally crosses South America. This pattern helps to maintain low (high) pressure anomalies off the Chilean coast at the upper-river basin latitude for high (low) Chubut runoffs. Copyright 2008 by the American Geophysical Union. |
| format |
JOUR |
| author |
Araneo, D.C. Compagnucci, R.H. |
| author_facet |
Araneo, D.C. Compagnucci, R.H. |
| author_sort |
Araneo, D.C. |
| title |
Atmospheric circulation features associated to Argentinean Andean rivers discharge variability |
| title_short |
Atmospheric circulation features associated to Argentinean Andean rivers discharge variability |
| title_full |
Atmospheric circulation features associated to Argentinean Andean rivers discharge variability |
| title_fullStr |
Atmospheric circulation features associated to Argentinean Andean rivers discharge variability |
| title_full_unstemmed |
Atmospheric circulation features associated to Argentinean Andean rivers discharge variability |
| title_sort |
atmospheric circulation features associated to argentinean andean rivers discharge variability |
| url |
http://hdl.handle.net/20.500.12110/paper_00948276_v35_n1_p_Araneo |
| work_keys_str_mv |
AT araneodc atmosphericcirculationfeaturesassociatedtoargentineanandeanriversdischargevariability AT compagnuccirh atmosphericcirculationfeaturesassociatedtoargentineanandeanriversdischargevariability |
| _version_ |
1807319784905244672 |