An unstructured-grid, finite-volume sea ice model: Development, validation, and application

Gao, Guoping; Chen, Changsheng; Qi, Jianhua; Beardsley, Robert C.

doi:10.1029/2010jc006688

Cited by 46 publications

(55 citation statements)

References 31 publications

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“…An integral form of the momentum equations are solved using a second‐order approximate finite volume discretization using either a Cartesian [ Chen et al ., ] or spherical [ Chen et al ., , 2011] coordinate system. Advancement in time uses the option of a mode‐split solver or a semi‐implicit solver [ Chen et al ., ; Lai et al ., ; Gao et al ., ]. FVCOM has been broadly applied to simulate the 3‐D baroclinic circulations in estuaries [ Weisberg and Zheng , ; Yang and Khangaonkar , ; Zheng and Weisberg , ], continental shelves [ Rego and Li , ; Zheng and Weisberg , ], and has also been applied to study storm surges [ Weisberg and Zheng , , 2008; Rego and Li , ].…”

Section: Methodsmentioning

confidence: 99%

U.S. IOOS coastal and ocean modeling testbed: Inter-model evaluation of tides, waves, and hurricane surge in the Gulf of Mexico

Kerr

Donahue

Westerink

et al. 2013

J. Geophys. Res. Oceans

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[1] A Gulf of Mexico performance evaluation and comparison of coastal circulation and wave models was executed through harmonic analyses of tidal simulations, hindcasts of Hurricane Ike (2008) and Rita (2005), and a benchmarking study. Three unstructured coastal circulation models (ADCIRC, FVCOM, and SELFE) validated with similar skill on a new common Gulf scale mesh (ULLR) with identical frictional parameterization and forcing for the tidal validation and hurricane hindcasts. Coupled circulation and wave models, SWANþADCIRC and WWMIIþSELFE, along with FVCOM loosely coupled with SWAN, also validated with similar skill. NOAA's official operational forecast storm surge model (SLOSH) was implemented on local and Gulf scale meshes with the same wind stress and pressure forcing used by the unstructured models for hindcasts of Ike and Rita. SLOSH's local meshes failed to capture regional processes such as Ike's forerunner and the results from the Gulf scale mesh further suggest shortcomings may be due to a combination of poor mesh resolution, missing internal physics such as tides and nonlinear advection, and SLOSH's internal frictional parameterization. In addition, these models were benchmarked to assess and compare execution speed and scalability for a prototypical operational simulation. It was apparent that a higher number of computational cores are needed for the unstructured models to meet similar operational implementation requirements to SLOSH, and that some of them could benefit from improved parallelization and faster execution speed.

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Section: Methodsmentioning

confidence: 99%

U.S. IOOS coastal and ocean modeling testbed: Inter-model evaluation of tides, waves, and hurricane surge in the Gulf of Mexico

Kerr

Donahue

Westerink

et al. 2013

J. Geophys. Res. Oceans

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“…FVCOM uses an unstructured triangle mesh system, which is flexible for different spatial scales of the hydrodynamic processes, for instance the current field in a fish farm in this study. To date, FVCOM has become a fully coupled iceocean-wave-sediment-ecosystem model system and has been used for various purposes covering a great variety of scales in time and space (Gao et al 2011). The model domain covers the Scotian Shelf, Georges Bank, Gulf of Maine and the Bay of Fundy (Fig.…”

Section: Study Area and Model Setupmentioning

confidence: 99%

A three-dimensional hydrodynamic model for aquaculture: a case study in the Bay of Fundy

Wu¹,

Chaffey²,

Law³

et al. 2014

Aquacult. Environ. Interact.

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Impacts of aquaculture on the local current field and the erosion of the bottom sediment in the Bay of Fundy, Canada, have been investigated with a 3-dimensional hydrodynamic model. The model is evaluated against independent observations of the current. Model results show that the presence of fish cages restricts water flow and reduces the velocity in the surface layer occupied by the cages, but enhances the water velocity in the bottom layer beneath the cages. Sensitivity studies show that the change in the flow velocity beneath the cages is sensitive to variations in the drag coefficient and the height of the fish cages. As the drag coefficient increases, the bottom velocity also increases until a steady state value is reached. For the cage height, however, the tidal speed beneath the cages first increases with cage height and then significantly decreases with further increasing height. The maximum increase in velocity occurs when the cage height is about half the local water depth (H/H 0 = 0.5, where H is the cage height and H 0 is the water depth). The increase in bottom velocity significantly speeds up the erosion of the bottom sediment. The model results also indicate that there is an optimal drag coefficient and an optimal cage height for a specific farm site. By utilizing the optimal drag coefficient and height, it is possible to speed up sediment erosion beneath the cages and, thus, decrease the environmental problems caused by accumulated fish farm waste.

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“…To ensure that Global-FVCOM was capable of capturing the regional circulation along the eastern Japanese coast, satellite-derived sea surface temperature (SST) (http://www.nodc.noaa.gov/SatelliteData/ghrsst) and AVISO sea surface height (SSH) (http://www.aviso.oceanobs.com/ en/data/products/sea-surface-height-products.html) were assimilated into the model. Global-FVCOM has been validated through a 50 yr spin-up simulation and a 33 yr hindcast assimilation (Gao, 2011;Hu et al, 2011).…”

Section: The Model and Design Of Numerical Experimentsmentioning

confidence: 99%

Initial spread of <sup>137</sup>Cs from the Fukushima Dai-ichi Nuclear Power Plant over the Japan continental shelf: a study using a high-resolution, global-coastal nested ocean model

et al. 2013

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Abstract. The 11 March 2011 tsunami triggered by the M9 and M7.9 earthquakes off the Tōhoku coast destroyed facilities at the Fukushima Dai-ichi Nuclear Power Plant (FNPP) leading to a significant long-term flow of the radionuclide 137Cs into coastal waters. A high-resolution, global-coastal nested ocean model was first constructed to simulate the 11 March tsunami and coastal inundation. Based on the model's success in reproducing the observed tsunami and coastal inundation, model experiments were then conducted with differing grid resolution to assess the initial spread of 137Cs over the eastern shelf of Japan. The 137Cs was tracked as a conservative tracer (without radioactive decay) in the three-dimensional model flow field over the period of 26 March–31 August 2011. The results clearly show that for the same 137Cs discharge, the model-predicted spreading of 137Cs was sensitive not only to model resolution but also the FNPP seawall structure. A coarse-resolution (∼2 km) model simulation led to an overestimation of lateral diffusion and thus faster dispersion of 137Cs from the coast to the deep ocean, while advective processes played a more significant role when the model resolution at and around the FNPP was refined to ∼5 m. By resolving the pathways from the leaking source to the southern and northern discharge canals, the high-resolution model better predicted the 137Cs spreading in the inner shelf where in situ measurements were made at 30 km off the coast. The overestimation of 137Cs concentration near the coast is thought to be due to the omission of sedimentation and biogeochemical processes as well as uncertainties in the amount of 137Cs leaking from the source in the model. As a result, a biogeochemical module should be included in the model for more realistic simulations of the fate and spreading of 137Cs in the ocean.

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An unstructured-grid, finite-volume sea ice model: Development, validation, and application

Cited by 46 publications

References 31 publications

U.S. IOOS coastal and ocean modeling testbed: Inter-model evaluation of tides, waves, and hurricane surge in the Gulf of Mexico

U.S. IOOS coastal and ocean modeling testbed: Inter-model evaluation of tides, waves, and hurricane surge in the Gulf of Mexico

A three-dimensional hydrodynamic model for aquaculture: a case study in the Bay of Fundy

Initial spread of <sup>137</sup>Cs from the Fukushima Dai-ichi Nuclear Power Plant over the Japan continental shelf: a study using a high-resolution, global-coastal nested ocean model

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An unstructured-grid, finite-volume sea ice model: Development, validation, and application

Cited by 46 publications

References 31 publications

U.S. IOOS coastal and ocean modeling testbed: Inter-model evaluation of tides, waves, and hurricane surge in the Gulf of Mexico

U.S. IOOS coastal and ocean modeling testbed: Inter-model evaluation of tides, waves, and hurricane surge in the Gulf of Mexico

A three-dimensional hydrodynamic model for aquaculture: a case study in the Bay of Fundy

Initial spread of &lt;sup&gt;137&lt;/sup&gt;Cs from the Fukushima Dai-ichi Nuclear Power Plant over the Japan continental shelf: a study using a high-resolution, global-coastal nested ocean model

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Initial spread of <sup>137</sup>Cs from the Fukushima Dai-ichi Nuclear Power Plant over the Japan continental shelf: a study using a high-resolution, global-coastal nested ocean model