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Towards a multi-scale/physics numerical model of the hydrosphere Bouillon, S.; de Brauwere, A.; de Brye, B.; Deleersnijder, E.; De Maet, T.; Fichefet, T.; Hanert, E.; Kärnä, T.; Lambrechts, J.; Legat, V.; Lietaer, O.; Melchior, S.; Pestiaux, A.; Remacle, J.-F.; Seny, B.; Soares-Frazao, S.; Spinewine, B.; Thomas, C.; Vanclooster, M.; Van Pham, C. (2011). Towards a multi-scale/physics numerical model of the hydrosphere, in: IMUM 2011 - The 10th International Workshop on Multiscale (Un-)structured Mesh Numerical Modelling for coastal, shelf and global ocean dynamics - 22 - 25 August 2011. In: (2011). IMUM 2011 - The 10th International Workshop on Multiscale (Un-)structured Mesh Numerical Modelling for coastal, shelf and global ocean dynamics - 22 - 25 August 2011. Alfred Wegener Institute for Polar and Marine Research: Bremerhaven.

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 236184 [ download pdf ]

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Auteurs		Top
Bouillon, S. de Brauwere, A. de Brye, B. Deleersnijder, E. De Maet, T. Fichefet, T. Hanert, E.	Kärnä, T. Lambrechts, J. Legat, V. Lietaer, O. Melchior, S. Pestiaux, A. Remacle, J.-F.	Seny, B. Soares-Frazao, S. Spinewine, B. Thomas, C. Vanclooster, M. Van Pham, C.

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Abstract

The hydrosphere is made up of a number media, such as the oceans, the shelf seas, the estuaries, the rivers, the land surface and ground water as well as the sea ice - which, for the sake of simplicity, is considered herein to be part of the hydrosphere. The processes taking place in these domains are vastly different in nature and are characterized by a wide range of spaceand time-scales. The components of the hydrosphere interact with each other. For instance, the shallow marine and estuarine regions, though accounting for less than 1% of the volume of the oceans, have a biomass far from negligible as compared to that of the oceans, implying that they play a significant role in global biogeochemical cycles. This is one of the reasons why models are now needed that deal with most, if not all, of the components of the hydrospheric system.Numerical models of each of the components of the hydrosphere already exist. However, an integrated model of the whole hydrosphere has yet to be developed. Building such a model is a daunting task, requiring the development of multi-scale/physics simulation tools. Numerical methods for dealing with multi-scale problems are developing rapidly. Unstructured meshes offer an almost infinite geometrical flexibility, allowing the space resolution to be increased when and where necessary. In addition, time steppings for dealing with a wide spectrum of timescales while retaining a high order of accuracy have been developed over recent years (e.g. multi-rate schemes).In this talk we will present the current status of SLIM, as well as developments planned in the near future. We will highlight the efficiency issues related to the use of unstructured meshes and present possible strategies to overcome them. Applications will be reported on, in particular those pertaining to the land-sea continuum of the Scheldt River (France, Belgium, The Netherlands), the Great Barrier Reef (Australia) and the Mahakam River (Indonesia).

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