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Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S
Altimeter sea surface height (SSH) fields are analyzed to define and discuss the seasonal circulation over the wide continental shelf in the SW Atlantic Ocean (27°–43°S) during 2001–2012. Seasonal variability is low south of the Rio de la Plata (RdlP), where winds and currents remain equatorward for...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5012128/ https://www.ncbi.nlm.nih.gov/pubmed/27656332 http://dx.doi.org/10.1002/2015JC010769 |
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author | Strub, P. Ted James, Corinne Combes, Vincent Matano, Ricardo P. Piola, Alberto R. Palma, Elbio D. Saraceno, Martin Guerrero, Raul A. Fenco, Harold Ruiz‐Etcheverry, Laura A. |
author_facet | Strub, P. Ted James, Corinne Combes, Vincent Matano, Ricardo P. Piola, Alberto R. Palma, Elbio D. Saraceno, Martin Guerrero, Raul A. Fenco, Harold Ruiz‐Etcheverry, Laura A. |
author_sort | Strub, P. Ted |
collection | PubMed |
description | Altimeter sea surface height (SSH) fields are analyzed to define and discuss the seasonal circulation over the wide continental shelf in the SW Atlantic Ocean (27°–43°S) during 2001–2012. Seasonal variability is low south of the Rio de la Plata (RdlP), where winds and currents remain equatorward for most of the year. Winds and currents in the central and northern parts of our domain are also equatorward during autumn and winter but reverse to become poleward during spring and summer. Transports of shelf water to the deep ocean are strongest during summer offshore and to the southeast of the RdlP. Details of the flow are discussed using mean monthly seasonal cycles of winds, heights, and currents, along with analyses of Empirical Orthogonal Functions. Principle Estimator Patterns bring out the patterns of wind forcing and ocean response. The largest part of the seasonal variability in SSH signals is due to changes in the wind forcing (described above) and changes in the strong boundary currents that flow along the eastern boundary of the shelf. The rest of the variability contains a smaller component due to heating and expansion of the water column, concentrated in the southern part of the region next to the coast. Our results compare well to previous studies using in situ data and to results from realistic numerical models of the regional circulation. |
format | Online Article Text |
id | pubmed-5012128 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-50121282016-09-19 Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S Strub, P. Ted James, Corinne Combes, Vincent Matano, Ricardo P. Piola, Alberto R. Palma, Elbio D. Saraceno, Martin Guerrero, Raul A. Fenco, Harold Ruiz‐Etcheverry, Laura A. J Geophys Res Oceans Research Articles Altimeter sea surface height (SSH) fields are analyzed to define and discuss the seasonal circulation over the wide continental shelf in the SW Atlantic Ocean (27°–43°S) during 2001–2012. Seasonal variability is low south of the Rio de la Plata (RdlP), where winds and currents remain equatorward for most of the year. Winds and currents in the central and northern parts of our domain are also equatorward during autumn and winter but reverse to become poleward during spring and summer. Transports of shelf water to the deep ocean are strongest during summer offshore and to the southeast of the RdlP. Details of the flow are discussed using mean monthly seasonal cycles of winds, heights, and currents, along with analyses of Empirical Orthogonal Functions. Principle Estimator Patterns bring out the patterns of wind forcing and ocean response. The largest part of the seasonal variability in SSH signals is due to changes in the wind forcing (described above) and changes in the strong boundary currents that flow along the eastern boundary of the shelf. The rest of the variability contains a smaller component due to heating and expansion of the water column, concentrated in the southern part of the region next to the coast. Our results compare well to previous studies using in situ data and to results from realistic numerical models of the regional circulation. John Wiley and Sons Inc. 2015-05 2015-05-09 /pmc/articles/PMC5012128/ /pubmed/27656332 http://dx.doi.org/10.1002/2015JC010769 Text en © 2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs (http://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Research Articles Strub, P. Ted James, Corinne Combes, Vincent Matano, Ricardo P. Piola, Alberto R. Palma, Elbio D. Saraceno, Martin Guerrero, Raul A. Fenco, Harold Ruiz‐Etcheverry, Laura A. Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S |
title | Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S |
title_full | Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S |
title_fullStr | Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S |
title_full_unstemmed | Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S |
title_short | Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S |
title_sort | altimeter‐derived seasonal circulation on the southwest atlantic shelf: 27°–43°s |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5012128/ https://www.ncbi.nlm.nih.gov/pubmed/27656332 http://dx.doi.org/10.1002/2015JC010769 |
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