Two-way nesting in split-explicit ocean models: Algorithms, implementation and validation

Laurent Debreu; Patrick Marchesiello; Pierrick Penven; Gildas Cambon

HAL: hal-00690731, version 1

DOI: 10.1016/j.ocemod.2012.03.003

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Two-way nesting in split-explicit ocean models: Algorithms, implementation and validation
Debreu L., Marchesiello P., Penven P., Cambon G.
Ocean Modelling 49-50 (2012) 1-21 - http://hal.archives-ouvertes.fr/hal-00690731

Publication type:

Article in peer-reviewed journal

Subject:

Sciences of the Universe/Earth Sciences/Oceanography

Title:

Two-way nesting in split-explicit ocean models: Algorithms, implementation and validation

Author(s):

Laurent Debreu ¹, Patrick Marchesiello ², Pierrick Penven ^3, 4, Gildas Cambon ⁵

Laboratory:

1:	MOISE (INRIA Grenoble Rhône-Alpes / LJK Laboratoire Jean Kuntzmann)

	http://team.inria.fr/moise

	CNRS : UMR5224 – INRIA – Laboratoire Jean Kuntzmann – Université Joseph Fourier - Grenoble I – Institut Polytechnique de Grenoble - Grenoble Institute of Technology

	Laboratoire Jean Kuntzmann B. P. 53 38041 Grenoble Cedex 9

	France

2:	Laboratoire d'Etudes en Géophysique et Océanographie Spatiales (LEGOS)

	http://www.legos.obs-mip.fr/

	Institut de recherche pour le développement [IRD] – CNRS : UMR065

	101 Promenade Laroque Anse Vata - BP A5 98848 NOUMEA Cedex

	New Caledonia

3:	Department of Oceanography

	http://www.sea.uct.ac.za/index.php

	University of Cape Town

	Department of Oceanography University of Cape Town Private Bag X3 Rondebosch Cape Town South Africa 7701

	South Africa

4:	Laboratoire de physique des océans (LPO)

	http://www.ifremer.fr/lpo

	CNRS : UMR6523 – Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) – INSU – Université de Bretagne Occidentale [UBO] – Institut de recherche pour le développement [IRD] – Institut Universitaire Européen de la Mer (IUEM)

	Z.I. Pointe du Diable B.P. 70 29280 Plouzané

	France

5:	Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS)

	http://www.legos.obs-mip.fr/

	CNRS : UMR5566 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III

	14 avenue Edouard Belin 31400 Toulouse

	France

Abstract:

A full two-way nesting approach for split-explicit, free surface ocean models is presented. It is novel in three main respects: the treatment of grid refinement at the fast mode (barotropic) level; the use of scale selective update schemes; the conservation of both volume and tracer contents via refluxing. An idealized application to vortex propagation on a β plane shows agreement between nested and high resolution solutions. A realistic application to the California Current System then confirm these results in a complex configuration. The selected algorithm is now part of ROMS_AGRIF. It is fully consistent with ROMS parallel capabilities on both shared and distributed memory architectures. The nesting implementation authorizes several nesting levels and several grids at any particular level. This operational capability, combined with the inner qualities of our two-way nesting algorithm and generally high-order accuracy of ROMS numerics, allow for realistic simulation of coastal and ocean dynamics at multiple, interacting scales.

Fulltext language:

English

Journal:

Ocean Modelling
Publisher	Elsevier
ISSN	1463-5003

Audience:

international

Publication date:

2012-06

Volume:

49-50

Page, identifiant, ...:

1-21

Keyword(s):

Two-way nesting – Finite difference method – Modeling – Boundary conditions – Coastal upwelling


hal-00690731, version 1
http://hal.archives-ouvertes.fr/hal-00690731
oai:hal.archives-ouvertes.fr:hal-00690731
From: Francoise Cudennec <>
Submitted on: Tuesday, 24 April 2012 11:57:15
Updated on: Tuesday, 24 April 2012 11:57:15