Surface wind variability on seasonal and interannual scales over RíO de la Plata area

Autores
Simionato, Claudia Gloria; Vera, Carolina Susana; Siegismund, Frank
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Previous works show that wind forcing is the main source of circulation seasonal variability in the Río de la Plata estuary, located on the southeastern coast of South America. Wind forcing exceeds by far the role of fresh water discharges. However, due to a lack of enough observations, the features and causes of surface wind variability are not well understood yet. Therefore this paper presents a comprehensive study of surface wind variability over the Río de la Plata estuary using the National Center for Environmental Prediction-National Center for Atmospheric Research (NCEP/NCAR) reanalysis data between 1948 and 1997. It is expected that this study contributes to better understand, model and thus predict the estuary circulation. An onshore to offshore rotation characterizes the seasonal variations of the surface winds from summer to winter. A linear trend analysis shows a displacement of the summer-winter seasonal features to earlier months. On interannual time-scales, the first leading pattern describes east-west changes of surface winds that seems to be forced by the quasibiennial tropospheric oscillation excited in the western tropical Pacific and previously identified by many authors. The conditions over the South Atlantic and in particular the Río de la Plata are influenced by such oscillation through an atmospheric Rossby wave train propagating out of the tropics. This result is very important for its implication on the predictability levels in the region. The second leading mode is associated with anticyclonic/cyclonic wind rotations off the estuary on interannual times scales which are related with changes in both atmospheric and oceanic surface conditions at Southern Hemispher high-latitudes.
Fil: Simionato, Claudia Gloria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Fil: Vera, Carolina Susana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Fil: Siegismund, Frank. Universitat Hamburg; Alemania
Materia
41-30° S; 58-47° W
ESTUARIES
INTERANNUAL VARIABILITY
NORTHERN ARGENTINE CONTINENTAL SHELF
RÍO DE LA PLATA
SEASONALITY
WIND VARIABILITY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/194156
Acceder
id CONICETDig_07eec7a033a18f5462529c8de2e6e78d
oai_identifier_str oai:ri.conicet.gov.ar:11336/194156
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Surface wind variability on seasonal and interannual scales over RíO de la Plata areaSimionato, Claudia GloriaVera, Carolina SusanaSiegismund, Frank41-30° S; 58-47° WESTUARIESINTERANNUAL VARIABILITYNORTHERN ARGENTINE CONTINENTAL SHELFRÍO DE LA PLATASEASONALITYWIND VARIABILITYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Previous works show that wind forcing is the main source of circulation seasonal variability in the Río de la Plata estuary, located on the southeastern coast of South America. Wind forcing exceeds by far the role of fresh water discharges. However, due to a lack of enough observations, the features and causes of surface wind variability are not well understood yet. Therefore this paper presents a comprehensive study of surface wind variability over the Río de la Plata estuary using the National Center for Environmental Prediction-National Center for Atmospheric Research (NCEP/NCAR) reanalysis data between 1948 and 1997. It is expected that this study contributes to better understand, model and thus predict the estuary circulation. An onshore to offshore rotation characterizes the seasonal variations of the surface winds from summer to winter. A linear trend analysis shows a displacement of the summer-winter seasonal features to earlier months. On interannual time-scales, the first leading pattern describes east-west changes of surface winds that seems to be forced by the quasibiennial tropospheric oscillation excited in the western tropical Pacific and previously identified by many authors. The conditions over the South Atlantic and in particular the Río de la Plata are influenced by such oscillation through an atmospheric Rossby wave train propagating out of the tropics. This result is very important for its implication on the predictability levels in the region. The second leading mode is associated with anticyclonic/cyclonic wind rotations off the estuary on interannual times scales which are related with changes in both atmospheric and oceanic surface conditions at Southern Hemispher high-latitudes.Fil: Simionato, Claudia Gloria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; ArgentinaFil: Vera, Carolina Susana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; ArgentinaFil: Siegismund, Frank. Universitat Hamburg; AlemaniaCoastal Education & Research Foundation2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/194156Simionato, Claudia Gloria; Vera, Carolina Susana; Siegismund, Frank; Surface wind variability on seasonal and interannual scales over RíO de la Plata area; Coastal Education & Research Foundation; Journal of Coastal Research; 21; 4; 12-2005; 770-7830749-0208CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.2112/008-NIS.1info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/journal-of-coastal-research/volume-2005/issue-214/008-NIS.1/Surface-Wind-Variability-on-Seasonal-and-Interannual-Scales-Over-R%c3%ado/10.2112/008-NIS.1.shortinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T13:27:04Zoai:ri.conicet.gov.ar:11336/194156instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-12-23 13:27:04.414CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Surface wind variability on seasonal and interannual scales over RíO de la Plata area
title Surface wind variability on seasonal and interannual scales over RíO de la Plata area
spellingShingle Surface wind variability on seasonal and interannual scales over RíO de la Plata area
Simionato, Claudia Gloria
41-30° S; 58-47° W
ESTUARIES
INTERANNUAL VARIABILITY
NORTHERN ARGENTINE CONTINENTAL SHELF
RÍO DE LA PLATA
SEASONALITY
WIND VARIABILITY
title_short Surface wind variability on seasonal and interannual scales over RíO de la Plata area
title_full Surface wind variability on seasonal and interannual scales over RíO de la Plata area
title_fullStr Surface wind variability on seasonal and interannual scales over RíO de la Plata area
title_full_unstemmed Surface wind variability on seasonal and interannual scales over RíO de la Plata area
title_sort Surface wind variability on seasonal and interannual scales over RíO de la Plata area
dc.creator.none.fl_str_mv Simionato, Claudia Gloria
Vera, Carolina Susana
Siegismund, Frank
author Simionato, Claudia Gloria
author_facet Simionato, Claudia Gloria
Vera, Carolina Susana
Siegismund, Frank
author_role author
author2 Vera, Carolina Susana
Siegismund, Frank
author2_role author
author
dc.subject.none.fl_str_mv 41-30° S; 58-47° W
ESTUARIES
INTERANNUAL VARIABILITY
NORTHERN ARGENTINE CONTINENTAL SHELF
RÍO DE LA PLATA
SEASONALITY
WIND VARIABILITY
topic 41-30° S; 58-47° W
ESTUARIES
INTERANNUAL VARIABILITY
NORTHERN ARGENTINE CONTINENTAL SHELF
RÍO DE LA PLATA
SEASONALITY
WIND VARIABILITY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Previous works show that wind forcing is the main source of circulation seasonal variability in the Río de la Plata estuary, located on the southeastern coast of South America. Wind forcing exceeds by far the role of fresh water discharges. However, due to a lack of enough observations, the features and causes of surface wind variability are not well understood yet. Therefore this paper presents a comprehensive study of surface wind variability over the Río de la Plata estuary using the National Center for Environmental Prediction-National Center for Atmospheric Research (NCEP/NCAR) reanalysis data between 1948 and 1997. It is expected that this study contributes to better understand, model and thus predict the estuary circulation. An onshore to offshore rotation characterizes the seasonal variations of the surface winds from summer to winter. A linear trend analysis shows a displacement of the summer-winter seasonal features to earlier months. On interannual time-scales, the first leading pattern describes east-west changes of surface winds that seems to be forced by the quasibiennial tropospheric oscillation excited in the western tropical Pacific and previously identified by many authors. The conditions over the South Atlantic and in particular the Río de la Plata are influenced by such oscillation through an atmospheric Rossby wave train propagating out of the tropics. This result is very important for its implication on the predictability levels in the region. The second leading mode is associated with anticyclonic/cyclonic wind rotations off the estuary on interannual times scales which are related with changes in both atmospheric and oceanic surface conditions at Southern Hemispher high-latitudes.
Fil: Simionato, Claudia Gloria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Fil: Vera, Carolina Susana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Fil: Siegismund, Frank. Universitat Hamburg; Alemania
description Previous works show that wind forcing is the main source of circulation seasonal variability in the Río de la Plata estuary, located on the southeastern coast of South America. Wind forcing exceeds by far the role of fresh water discharges. However, due to a lack of enough observations, the features and causes of surface wind variability are not well understood yet. Therefore this paper presents a comprehensive study of surface wind variability over the Río de la Plata estuary using the National Center for Environmental Prediction-National Center for Atmospheric Research (NCEP/NCAR) reanalysis data between 1948 and 1997. It is expected that this study contributes to better understand, model and thus predict the estuary circulation. An onshore to offshore rotation characterizes the seasonal variations of the surface winds from summer to winter. A linear trend analysis shows a displacement of the summer-winter seasonal features to earlier months. On interannual time-scales, the first leading pattern describes east-west changes of surface winds that seems to be forced by the quasibiennial tropospheric oscillation excited in the western tropical Pacific and previously identified by many authors. The conditions over the South Atlantic and in particular the Río de la Plata are influenced by such oscillation through an atmospheric Rossby wave train propagating out of the tropics. This result is very important for its implication on the predictability levels in the region. The second leading mode is associated with anticyclonic/cyclonic wind rotations off the estuary on interannual times scales which are related with changes in both atmospheric and oceanic surface conditions at Southern Hemispher high-latitudes.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/194156
Simionato, Claudia Gloria; Vera, Carolina Susana; Siegismund, Frank; Surface wind variability on seasonal and interannual scales over RíO de la Plata area; Coastal Education & Research Foundation; Journal of Coastal Research; 21; 4; 12-2005; 770-783
0749-0208
CONICET Digital
CONICET
url http://hdl.handle.net/11336/194156
identifier_str_mv Simionato, Claudia Gloria; Vera, Carolina Susana; Siegismund, Frank; Surface wind variability on seasonal and interannual scales over RíO de la Plata area; Coastal Education & Research Foundation; Journal of Coastal Research; 21; 4; 12-2005; 770-783
0749-0208
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.2112/008-NIS.1
info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/journal-of-coastal-research/volume-2005/issue-214/008-NIS.1/Surface-Wind-Variability-on-Seasonal-and-Interannual-Scales-Over-R%c3%ado/10.2112/008-NIS.1.short
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Coastal Education & Research Foundation
publisher.none.fl_str_mv Coastal Education & Research Foundation
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1852335145458073600
score 13.075124

Publicaciones similares