Lateral Boundary Conditions at the staircase-like boundary of ocean models

Eugene Kazantsev 1 Florian Lemarié 1 Éric Blayo 1
1 AIRSEA - Mathematics and computing applied to oceanic and atmospheric flows
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, UJF - Université Joseph Fourier - Grenoble 1, INPG - Institut National Polytechnique de Grenoble
Abstract : A 4D-Var data assimilation technique is applied to a rectangular-box configuration of the NEMO in order to analyze the optimal parametrization of boun\-dary conditions at lateral boundaries. The impact of staircase-shaped coastlines is studied by rotating the model grid around the center of the box. Rotations on $30^\circ$ and $45^\circ$ are studied with single and double gyre forcing patterns. It is shown that optimized boundary conditions compensate the errors induced by the staircase-like approximation of the coastline.
Type de document :
Communication dans un congrès
6ème Colloque National d'Assimilation de données, Nov 2016, Grenoble, France. 2016, 〈 https://cna-2016.sciencesconf.org/〉
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Contributeur : Eugene Kazantsev <>
Soumis le : mardi 13 décembre 2016 - 09:04:27
Dernière modification le : jeudi 11 janvier 2018 - 06:27:25
Document(s) archivé(s) le : mardi 14 mars 2017 - 12:13:52

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Eugene Kazantsev, Florian Lemarié, Éric Blayo. Lateral Boundary Conditions at the staircase-like boundary of ocean models. 6ème Colloque National d'Assimilation de données, Nov 2016, Grenoble, France. 2016, 〈 https://cna-2016.sciencesconf.org/〉. 〈hal-01415345〉

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