Articles | Volume 19, issue 4
https://doi.org/10.5194/os-19-1009-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-19-1009-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Jul 2023
Research article |
| 06 Jul 2023
| 06 Jul 2023
Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades
Verónica Caínzos
CORRESPONDING AUTHOR
Unidad Océano y Clima, Instituto de Oceanografía y Cambio
Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, Unidad
Asociada ULPGC-CSIC, Canary Islands, Spain
M. Dolores Pérez-Hernández
Unidad Océano y Clima, Instituto de Oceanografía y Cambio
Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, Unidad
Asociada ULPGC-CSIC, Canary Islands, Spain
Daniel Santana-Toscano
Unidad Océano y Clima, Instituto de Oceanografía y Cambio
Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, Unidad
Asociada ULPGC-CSIC, Canary Islands, Spain
Cristina Arumí-Planas
Unidad Océano y Clima, Instituto de Oceanografía y Cambio
Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, Unidad
Asociada ULPGC-CSIC, Canary Islands, Spain
Alonso Hernández-Guerra
Unidad Océano y Clima, Instituto de Oceanografía y Cambio
Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, Unidad
Asociada ULPGC-CSIC, Canary Islands, Spain
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Eastern Boundary Upwelling Systems (EBUSs) are crucial for resources, but climate change poses uncertainties for their future. To assess global warming's impact, we examine Andrew Bakun's 1990 hypothesis of intensified upwelling using deseasonalized sea surface temperature data. A new index, αUI, normalizes upwelling trends against non-upwelling processes, confirming intensification in all EBUSs and supporting Bakun's hypothesis.
M. Dolores Pérez-Hernández, Alonso Hernández-Guerra, Isis Comas-Rodríguez, Verónica M. Benítez-Barrios, Eugenio Fraile-Nuez, Josep L. Pelegrí, and Alberto C. Naveira Garabato
Ocean Sci., 13, 577–587, https://doi.org/10.5194/os-13-577-2017, https://doi.org/10.5194/os-13-577-2017, 2017
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The decadal differences between the ALBATROSS (April 1999) and MOC2-Austral (February 2010) hydrographic cruises are analyzed. Changes in the intermediate water masses beneath seem to be very sensitive to the wind conditions existing in their formation area. The Subantarctic Front is wider and weaker in 2010 than in 1999, while the Polar Front remains in the same position and strengthens.
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Short summary
The pathways of the Atlantic circulation form a complex system of currents that change meridionally due to interactions with nearby water masses. Over the last 30 years, hydrographic data have allowed us to characterize these upper, deep, and abyssal currents for the entire water column using high-resolution data, computing their mass, heat, and freshwater transports. Generally, we have found no changes among decades for each current in terms of the transport of mass or properties.
The pathways of the Atlantic circulation form a complex system of currents that change...
