Antarctic Oscillation signal on precipitation anomalies over southeastern South America
The relation between the Antarctic Oscillation (AAO) and the precipitation in southeastern South America (SESA) is examined. The AAO influence is particularly strong during winter and late spring although of opposite sign. In particular during spring, AAO positive (negative) phases are associated wi...
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ftunibueairesbd:todo:paper_00948276_v30_n21_pCLM3_Silvestri 2023-10-29T02:32:23+01:00 Antarctic Oscillation signal on precipitation anomalies over southeastern South America Silvestri, G.E. Vera, C.S. https://hdl.handle.net/20.500.12110/paper_00948276_v30_n21_pCLM3_Silvestri unknown http://hdl.handle.net/20.500.12110/paper_00948276_v30_n21_pCLM3_Silvestri info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Climatology Oscillations Precipitation (meteorology) Oscillation signals Geophysics annual variation atmosphere-ocean coupling El Nino-Southern Oscillation precipitation (climatology) teleconnection South America JOUR ftunibueairesbd https://doi.org/20.500.12110/paper_00948276_v30_n21_pCLM3_Silvestri 2023-10-05T01:55:52Z The relation between the Antarctic Oscillation (AAO) and the precipitation in southeastern South America (SESA) is examined. The AAO influence is particularly strong during winter and late spring although of opposite sign. In particular during spring, AAO positive (negative) phases are associated with the intensification of an upper-level anticyclonic (cyclonic) anomaly, weakened (enhanced) moisture convergence and decreased (increased) precipitation over SESA. The combined influence of both ENSO and AAO on SESA precipitation was also explored and significant correlation values between both oscillations are only observed during spring. Results show that during that particular season, AAO activity produces a strong modulation of the ENSO signal on SESA precipitation. Copyright 2003 by the American Geophysical Union. Journal/Newspaper Antarc* Antarctic Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
institution |
Open Polar |
collection |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
unknown |
topic |
Climatology Oscillations Precipitation (meteorology) Oscillation signals Geophysics annual variation atmosphere-ocean coupling El Nino-Southern Oscillation precipitation (climatology) teleconnection South America |
spellingShingle |
Climatology Oscillations Precipitation (meteorology) Oscillation signals Geophysics annual variation atmosphere-ocean coupling El Nino-Southern Oscillation precipitation (climatology) teleconnection South America Silvestri, G.E. Vera, C.S. Antarctic Oscillation signal on precipitation anomalies over southeastern South America |
topic_facet |
Climatology Oscillations Precipitation (meteorology) Oscillation signals Geophysics annual variation atmosphere-ocean coupling El Nino-Southern Oscillation precipitation (climatology) teleconnection South America |
description |
The relation between the Antarctic Oscillation (AAO) and the precipitation in southeastern South America (SESA) is examined. The AAO influence is particularly strong during winter and late spring although of opposite sign. In particular during spring, AAO positive (negative) phases are associated with the intensification of an upper-level anticyclonic (cyclonic) anomaly, weakened (enhanced) moisture convergence and decreased (increased) precipitation over SESA. The combined influence of both ENSO and AAO on SESA precipitation was also explored and significant correlation values between both oscillations are only observed during spring. Results show that during that particular season, AAO activity produces a strong modulation of the ENSO signal on SESA precipitation. Copyright 2003 by the American Geophysical Union. |
format |
Journal/Newspaper |
author |
Silvestri, G.E. Vera, C.S. |
author_facet |
Silvestri, G.E. Vera, C.S. |
author_sort |
Silvestri, G.E. |
title |
Antarctic Oscillation signal on precipitation anomalies over southeastern South America |
title_short |
Antarctic Oscillation signal on precipitation anomalies over southeastern South America |
title_full |
Antarctic Oscillation signal on precipitation anomalies over southeastern South America |
title_fullStr |
Antarctic Oscillation signal on precipitation anomalies over southeastern South America |
title_full_unstemmed |
Antarctic Oscillation signal on precipitation anomalies over southeastern South America |
title_sort |
antarctic oscillation signal on precipitation anomalies over southeastern south america |
url |
https://hdl.handle.net/20.500.12110/paper_00948276_v30_n21_pCLM3_Silvestri |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://hdl.handle.net/20.500.12110/paper_00948276_v30_n21_pCLM3_Silvestri |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar |
op_doi |
https://doi.org/20.500.12110/paper_00948276_v30_n21_pCLM3_Silvestri |
_version_ |
1781053772345114624 |