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| Treguier, Anne-marie; Molines, J. M.; Madec, G. |
| This report contributes to the preliminary validation of the ORCA025 configuration of the DRAKKAR project (www.ifremer.fr/lpo/drakkar). Only experiments forced by a repeated seasonal cycle forcing are considered here. Most of the plots are for the global ocean but some emphasize the Southern Ocean. The model (ORCA025) is the 1/4 global configuarion of the DRAKKAR project. It uses the NEMO system: OPA9 coupled with the LIM sea ice model, www.lodyc.jussieu.fr/NEMO. The configuration is described in Barnier et al. (2006). The main experiment considered here, ORCA025-G42, is short: it lasts 10 years. |
| Tipo: Text |
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| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/rapport-6501.pdf |
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| Treguier, Anne-marie; Lique, Camille; Deshayes, Julie; Molines, J. M.. |
| Correlations between temperature and velocity fluctuations are a significant contribution to the North Atlantic meridional heat transport, especially at the northern boundary of the subtropical gyre. In satellite observations and in a numerical model at 1/12 degrees resolution, a localized pattern of positive eddy heat flux is found northwest of the Gulf Stream, downstream of its separation at Cape Hatteras. It is confined to the upper 500 m. A simple kinematic model of a meandering jet can explain the surface eddy flux, taking into account a spatial shift between the maximum velocity of the jet and the maximum cross-jet temperature gradient. In the Gulf Stream such a spatial shift results from the nonlinear temperature profile and the vertical tilting of... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00391/50247/50871.pdf |
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