Articles | Volume 20, issue 1
https://doi.org/10.5194/os-20-43-2024
© Author(s) 2024. 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-20-43-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
17 Jan 2024
Research article |
| 17 Jan 2024
| 17 Jan 2024
Internal tides off the Amazon shelf – Part 1: The importance of the structuring of ocean temperature during two contrasted seasons
Université de Toulouse, LEGOS (CNES/CNRS/IRD/UT3), 31400 Toulouse, France
Mercator Ocean International, 31400, Toulouse, France
Ariane Koch-Larrouy
Université de Toulouse, LEGOS (CNES/CNRS/IRD/UT3), 31400 Toulouse, France
Isabelle Dadou
Université de Toulouse, LEGOS (CNES/CNRS/IRD/UT3), 31400 Toulouse, France
Michel Tchilibou
Collecte Localisation Satellites (CLS), 31500, Ramonville Saint-Agne, France
Guillaume Morvan
Université de Toulouse, LEGOS (CNES/CNRS/IRD/UT3), 31400 Toulouse, France
Jérôme Chanut
Mercator Ocean International, 31400, Toulouse, France
Alex Costa da Silva
Departamento de Oceanografia da Universidade Federal de Pernambuco, DOCEAN/UFPE, Recife, Brazil
Vincent Vantrepotte
Laboratoire d'Océanologie et de Géosciences (LOG), 62930, Wiméreux, France
Damien Allain
Université de Toulouse, LEGOS (CNES/CNRS/IRD/UT3), 31400 Toulouse, France
Trung-Kien Tran
Laboratoire d'Océanologie et de Géosciences (LOG), 62930, Wiméreux, France
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Publication in OS not foreseen
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Simon Barbot, Florent Lyard, Michel Tchilibou, and Loren Carrere
Ocean Sci., 17, 1563–1583, https://doi.org/10.5194/os-17-1563-2021, https://doi.org/10.5194/os-17-1563-2021, 2021
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Clément Bricaud, Julien Le Sommer, Gurvan Madec, Christophe Calone, Julie Deshayes, Christian Ethe, Jérôme Chanut, and Marina Levy
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In order to reduce the cost of ocean biogeochemical models, a multi-grid approach where ocean dynamics and tracer transport are computed with different spatial resolution has been developed in the NEMO v3.6 OGCM. Different experiments confirm that the spatial resolution of hydrodynamical fields can be coarsened without significantly affecting the resolved passive tracer fields. This approach leads to a factor of 7 reduction of the overhead associated with running a full biogeochemical model.
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Short summary
Twin simulations, with and without tides, are used to assess the impact of internal tides (ITs) on ocean temperature off the Amazon mouth at a seasonal scale. We found that in the surface layers, ITs and barotropic tides cause a cooling effect on sea surface temperature, subsequently leading to an increase in the net heat flux between the atmosphere and ocean. Vertical mixing is identified as the primary driver, followed by vertical and horizontal advection.
Twin simulations, with and without tides, are used to assess the impact of internal tides (ITs)...
