Performance of One-Way and Two-Way Nesting Techniques Using the Shelf Circulation Modelling System for the Eastern Canadian Shelf

Urrego-Blanco, J. R.; Jiang, Sheng; Dupont, Frédéric

doi:10.1080/07055900.2015.1130122

Cited by 7 publications

(8 citation statements)

References 22 publications

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“…for the HR over the 3-year simulation period). Volume conservation issues in 1-way nesting configuration have been pointed out by Debreu et al (2012) and Urrego-Blanco et al (2016), who showed that twoway nesting improves model performance in interface continuity and dynamic integrity compared to one-way nesting. Results of the one-way nesting simulations are not described here.…”

Section: Nesting Set-upmentioning

confidence: 99%

Hydrodynamic variability in the Southern Bight of the North Sea in response to typical atmospheric and tidal regimes. Benefit of using a high resolution model

et al. 2020

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In this paper, the hydrodynamics of the Southern Bight of the North Sea (SBNS) and in particular, the Belgian Coastal Zone (BCZ) is investigated on daily to seasonal time scales using a high resolution hydrodynamical model. The Regional Ocean Modeling System (ROMS) is implemented over the SBNS with 5 km resolution and downscaled at 1 km resolution over the BCZ in a two-way nesting configuration run over a three years period (i.e. 2006-2008). The benefit of using a high resolution model over the BCZ is assessed through an extensive comparison of model results with data from satellite and in-situ fixed platforms as well as reference products available for the region. The validation exercise and the results analysis are conducted with a particular focus on hydrodynamic features that are expected to impact the sediment transport. We find that despite the validation procedure does not allow to clearly demonstrate better performance of the high resolution model compared to the coarse resolution model in terms of overtidal circulation, sea surface temperature (SST) and salinity (SSS), the high resolution model resolves additional details in the variability of residual circulation and Scheldt salinity plume dynamics. The analysis of the response of the simulated hydrodynamics to atmospheric regimes for neap and spring tide highlights the major role played by the wind direction on the averaged currents and plume extension. The strongest currents and minimum plume extension are obtained under southwestern winds and neap tide while when northeastern winds prevail, the plume extension is at its maximum and the circulation is the weakest. We show that while neap tides allow the establishment of streamlined circulation, the spring tides induce more turbulent circulation which can favor the retention of transported elements. This latter property could not be resolved with the 5 km resolution model.

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Section: Nesting Set-upmentioning

confidence: 99%

Hydrodynamic variability in the Southern Bight of the North Sea in response to typical atmospheric and tidal regimes. Benefit of using a high resolution model

et al. 2020

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“…While the use of a (full) partner simulation can be a valuable option for its simplicity, the doubling of the computational cost may be undesirable for some applications, and an alternative setup may more appropriate. As an alternative setup, one can use a partner mesh only over a small portion of the domain that is localized near the refinement interface, similar in spirit to the localization of the level-set method near an interface (Peng et al, 1999) or to the transition or buffer zone used in some grid nesting approaches (Davies, 1976;Davies & Turner, 1977;Debreu & Blayo, 2008;Giorgi et al, 1993;Lo et al, 2008;Marbaix et al, 2003;Phillips & Shukla, 1973;Urrego-Blanco et al, 2016), so the additional cost could be smaller.…”

Section: Of 23mentioning

confidence: 99%

A Universal Predictor‐Corrector Approach for Minimizing Artifacts Due To Mesh Refinement

Du,

Stechmann

2023

J Adv Model Earth Syst

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With nested grids or related approaches, it is known that numerical artifacts can be generated at the interface of mesh refinement. Most of the existing methods of minimizing these artifacts are either problem‐dependent or numerical methods‐dependent. In this paper, we propose a universal predictor‐corrector approach to minimize these artifacts. By its construction, the approach can be applied to a wide class of models and numerical methods without modifying the existing methods but instead incorporating an additional step. The idea is to use an additional grid setup with a refinement interface at a different location, and then to correct the predicted state near the refinement interface by using information from the other grid setup. We give some analysis for our method in the setting of a one‐dimensional advection equation, showing that the key to the success of the method depends on an optimized way of choosing the weight functions, which determine the strength of the corrector at a certain location. Furthermore, the method is also tested in more general settings by numerical experiments, including shallow water equations, multi‐dimensional problems, and a variety of underlying numerical methods including finite difference/finite volume and spectral element. Numerical tests suggest the effectiveness of the method on reducing numerical artifacts due to mesh refinement.

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“…Models have to be able to resolve interactions between nearshore, estuarine, and shelf processes (10-100 m resolution is needed to resolve these processes), as well as open ocean processes, which are reasonably represented with a resolution of one to several km. One solution to this problem is multiplelevel nesting used in many applications as one-way nesting; thus, the upscaling is neglected (see, for example, Shan et al, 2011;Schulz-Stellenfleth and Stanev, 2016;Urrego-Blanco et al, 2016;Stanev et al, 2017). A lot of progress has been made recently in the development of unstructured grid models (see Fox-Kemper et al, 2019, for a discussion) because they enable full interaction between different scales, but unstructured grid models have not yet reached the level of maturity required for them to become fully operational on a global scale.…”

Section: Ocean Modelsmentioning

confidence: 99%

Synergies in Operational Oceanography: The Intrinsic Need for Sustained Ocean Observations

et al. 2019

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Operational oceanography can be described as the provision of routine oceanographic information needed for decision-making purposes. It is dependent upon sustained research and development through the end-to-end framework of an operational service, from observation collection to delivery mechanisms. The core components of operational oceanographic systems are a multi-platform observation network, a data management system, a data assimilative prediction system, and a dissemination/accessibility system. These are interdependent, necessitating communication and exchange between them, and together provide the mechanism through which a clear picture of ocean conditions, in the past, present, and future, can be seen. Ocean observations play a critical role in all aspects of operational oceanography, not only for assimilation but as part of the research cycle, and

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Performance of One-Way and Two-Way Nesting Techniques Using the Shelf Circulation Modelling System for the Eastern Canadian Shelf

Cited by 7 publications

References 22 publications

Hydrodynamic variability in the Southern Bight of the North Sea in response to typical atmospheric and tidal regimes. Benefit of using a high resolution model

Hydrodynamic variability in the Southern Bight of the North Sea in response to typical atmospheric and tidal regimes. Benefit of using a high resolution model

A Universal Predictor‐Corrector Approach for Minimizing Artifacts Due To Mesh Refinement

Synergies in Operational Oceanography: The Intrinsic Need for Sustained Ocean Observations

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