Procedures for offline grid nesting in regional ocean models

Mason, Evan; Molemaker, M. Jeroen; Shchepetkin, Alexander F.; Colas, François; McWilliams, James C.; Sangrà, Pablo

doi:10.1016/j.ocemod.2010.05.007

Cited by 210 publications

(155 citation statements)

References 40 publications

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“…2005) set up in a one-way, nested configuration, consisting of two regions: an inner region offshore from Oman with a 2-km horizontal resolution; and an outer ("parent") region with a 6.6-km resolution, which supplies boundary conditions for the inner region (procedure follows Mason et al 2010). The parent simulation is extensively described in Vic et al (2014).…”

Section: Regional Ocean Modelmentioning

confidence: 99%

Western boundary upwelling dynamics off Oman

et al. 2017

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Despite its climatic and ecosystemic significance, the coastal upwelling that takes place off Oman is not well understood. A primitive-equation, regional model forced by climatological wind stress is used to investigate its dynamics and to compare it with the better-known Eastern Boundary Upwellings (EBUs). The solution compares favorably with existing observations, simulating well the seasonal cycles of thermal structure, surface circulation (mean and turbulent), and sea-surface temperature (SST). There is a 1.5-month lag between the maximum of the upwellingfavorable wind-stress-curl forcing and the oceanic response (minima in sea-surface height and SST), which we attribute to onshore-propagating Rossby waves. A southwestwardflowing undercurrent (opposite to the direction of the nearsurface flow) is also simulated with a core depth of 1000 m, much deeper than found in EBUs (150-200 m). An EKE budget reveals that, in contrast to EBUs, the upwelling jet is more prone to barotropic than baroclinic instability and the contribution of locally-generated instabilities to EKE is higher by an order of magnitude. Advection and redistribution of EKE by standing mesoscale features also play a significant role in EKE budget.

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Section: Regional Ocean Modelmentioning

confidence: 99%

Western boundary upwelling dynamics off Oman

et al. 2017

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“…For a review on nesting schemes, we refer to Debreu and Blayo (2008). Recent nesting schemes relevant to our application are obtained in Haley and Lermusiaux (2010) and Mason et al (2010). In particular, the implicit two-way nesting of Haley and Lermusiaux (2010) could be combined with nesting initialization and downscaling schemes (Haley et al 2013), which improve the consistency among model fields and reduce unphysical transients due to nesting of multiple model types.…”

Section: Irenom-interactive Relocatable Nested Ocean Modelmentioning

confidence: 99%

A relocatable ocean model in support of environmental emergencies

et al. 2014

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During the Costa Concordia emergency case, regional, subregional, and relocatable ocean models have been used together with the oil spill model, MEDSLIK-II, to provide ocean currents forecasts, possible oil spill scenarios, and drifters trajectories simulations. The models results together with the evaluation of their performances are presented in this paper. In particular, we focused this work on the implementation of the Interactive RElo- Concordia emergency and on its validation using drifters released in the area of the accident. It is shown that thanks to the capability of improving easily and quickly its configuration, the IRENOM results are of greater accuracy than the results achieved using regional or subregional model products. The model topography, the initialization procedures, and the horizontal resolution are the key model settings to be configured. Furthermore, the IRENOM currents and the MEDSLIK-II simulated trajectories showed to be sensitive to the spatial resolution of the meteorological fields used, providing higher prediction skills with higher resolution wind forcing.

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“…It is used to simulate local phenomena of mesoscale and submesoscale eddies, internal tides, and nearshore surface wave breaking and rip currents . The methodology is most recently explained in Mason et al (2010). between two coarse-grid scale (Δx = 50 km) Pacific solutions due to two different levels of bathymetry smoothing, with an isopycnal hyperdiffusion (top), and with an isosigma hyperdiffusion (bottom).…”

Section: Related Projectsmentioning

confidence: 99%

Development and Utilization of Regional Oceanic Modeling System (ROMS). Delicacy, Imprecision, and Uncertainty of Oceanic Simulations: An Investigation with the Regional Oceanic Modeling System (ROMS). Mixing in the Ocean Surface Layer Using the Regional Oceanic Modeling System (ROMS).

McWilliams¹

2011

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LONG-TERM GOALSOur long-term goal is the continuing evolution of the Regional Oceanic Modeling System (ROMS) as a multi-scale, multi-process model and its utilization for studying a variety of oceanic phenomena. The dynamical processes span a range from turbulence to basin-scale circulation. A complementary goal is to explore, document, and explain the nature of the delicacies of the simulations for highly turbulent oceanic circulation. We expect that our experience will be relevant to analyze and forecast uncertainties for other atmospheric and oceanic simulation models. These activities are of interest to ONR through its core, DRI, and NOPP programs, including submesoscale parameterization (AESOP), strong internal waves (NLIWI), high-resolution air-sea interaction (HIRES), tropical cyclones, sediment transport, and horizontal mixing (LATMIX). OBJECTIVESOur core objectives are code improvements and oceanographic simulation studies with the Regional Oceanic Modeling System (ROMS). The targeted problems are submesoscale wakes, fronts, and eddies; nearshore currents; internal tides; regional and Pacific eddy-resolving circulations and their low-frequency variability; mesoscale ocean-atmosphere coupling; and planetary boundary layers with surface gravity waves. To address these problems we are making ROMS more of a multi-process, multi-purpose, multi-scale model by including the coupling of the core circulation dynamics to surface gravity waves; sediment resuspension and transport; biogeochemistry and ecosystems; non-hydrostatic large-eddy simulation; and mesoscale atmospheric circulation, and by providing a framework for data-assimilation analyses (led by others). Our major algorithmic objectives are cross-scale grid-embedding in turbulent flows; improved accuracy in the Boussinesq approximation with a realistic Equation of State (EOS); accurate advection; dynamically adaptive, vertical coordinates; surface-wave-averaged vortex

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Procedures for offline grid nesting in regional ocean models

Cited by 210 publications

References 40 publications

Western boundary upwelling dynamics off Oman

Western boundary upwelling dynamics off Oman

A relocatable ocean model in support of environmental emergencies

Development and Utilization of Regional Oceanic Modeling System (ROMS). Delicacy, Imprecision, and Uncertainty of Oceanic Simulations: An Investigation with the Regional Oceanic Modeling System (ROMS). Mixing in the Ocean Surface Layer Using the Regional Oceanic Modeling System (ROMS).

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