Agulhas leakage increasing trend: its relation to regime shift in the western boundary of the Tropical Atlantic
IV Encuentro Oceanografía Física Española, celebrado del 20 al 22 de julio de 2016 en Alicante,España.-- 1 page
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Universidad de Alicante
2016-07
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dig-icm-es-10261-1705082022-09-21T08:54:38Z Agulhas leakage increasing trend: its relation to regime shift in the western boundary of the Tropical Atlantic El aumento en la fuga de Agulhas: su relación con el cambio de regimen en el margen occidental del Atlántico Tropical Castellanos, Paola Campos, Edmo Piera, Jaume Sato, O.T. Silva Dias, M.A.F. IV Encuentro Oceanografía Física Española, celebrado del 20 al 22 de julio de 2016 en Alicante,España.-- 1 page The Agulhas System is a complex dynamical structure characterized by the intrusion of Indian Ocean waters into the South Atlantic Ocean by means of filaments and rings shed from the Agulhas Current retroflection. This influx of warmer and saltier Indian Ocean waters into the Atlantic –Agulhas leakage – is now recognized to play an important role in the global thermohaline circulation. Due to the absence of an adequate observing system, studies of the Agulhas system have relied on outputs of ocean models, which revealed a recent increase in the Agulhas leakage. Here we present the results of a 1/12° simulation with the Hybrid Coordinate Ocean Model (HYCOM), which also show an augmentation in Agulhas leakage. This increase in the leakage ought to have an impact on the meridional oceanic volume and heat transports in the Atlantic Ocean. Significant linear trends found in the integrated transport at 20 ºS, 15 ºS, and 5 ºS correlate well with Agulhas leakage. The augmented transport seems to be related to an increase in the latent heat flux observed along the NE Brazil coastline since 2003. Our study shows that the precipitation in the Brazilian coast has been increasing since 2005, with the same regime shift observed for the latent heat flux and the volume transport. This strongly suggests that the increase of the Agulhas transport affects the western boundary system of the Tropical Atlantic Ocean, which is directly related to the increase in the precipitation and latent heat flux along the western coast Peer Reviewed 2018-10-03T10:02:38Z 2018-10-03T10:02:38Z 2016-07 2018-10-03T10:02:39Z comunicación de congreso http://purl.org/coar/resource_type/c_5794 isbn: 978-84-16724-17-8 Libro de Resúmenes. IV Encuentro Oceanografía Física Española: 29 (2016) http://hdl.handle.net/10261/170508 Publisher's version http://rua.ua.es/dspace/handle/10045/59211 Sí open Universidad de Alicante |
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IV Encuentro Oceanografía Física Española, celebrado del 20 al 22 de julio de 2016 en Alicante,España.-- 1 page |
| format |
comunicación de congreso |
| author |
Castellanos, Paola Campos, Edmo Piera, Jaume Sato, O.T. Silva Dias, M.A.F. |
| spellingShingle |
Castellanos, Paola Campos, Edmo Piera, Jaume Sato, O.T. Silva Dias, M.A.F. Agulhas leakage increasing trend: its relation to regime shift in the western boundary of the Tropical Atlantic |
| author_facet |
Castellanos, Paola Campos, Edmo Piera, Jaume Sato, O.T. Silva Dias, M.A.F. |
| author_sort |
Castellanos, Paola |
| title |
Agulhas leakage increasing trend: its relation to regime shift in the western boundary of the Tropical Atlantic |
| title_short |
Agulhas leakage increasing trend: its relation to regime shift in the western boundary of the Tropical Atlantic |
| title_full |
Agulhas leakage increasing trend: its relation to regime shift in the western boundary of the Tropical Atlantic |
| title_fullStr |
Agulhas leakage increasing trend: its relation to regime shift in the western boundary of the Tropical Atlantic |
| title_full_unstemmed |
Agulhas leakage increasing trend: its relation to regime shift in the western boundary of the Tropical Atlantic |
| title_sort |
agulhas leakage increasing trend: its relation to regime shift in the western boundary of the tropical atlantic |
| publisher |
Universidad de Alicante |
| publishDate |
2016-07 |
| url |
http://hdl.handle.net/10261/170508 |
| work_keys_str_mv |
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| _version_ |
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