Showing papers in "Ocean Modelling in 2014"

TL;DR: Simulation characteristics from eighteen global ocean-sea-ice coupled models are presented with a focus on the mean Atlantic meridional overturning circulation (AMOC) and other related fields in the North Atlantic as discussed by the authors.

TL;DR: In this paper, the authors compare wind speeds and wave heights from ERA-I and CFSR using the same set of altimetry and buoy observations and error metrics to assess their consistency in time and space.

TL;DR: In this paper, a stochastic parameterization of ocean mesoscale eddies is constructed in order to account for the fluctuations in subgrid transport and to represent upscale turbulent cascades.

TL;DR: In this article, a class of sub-grid parameterizations which dissipate enstrophy but little or no energy is proposed, combining a standard hyperviscous closure with some mechanism to return dissipated energy to the resolved flow.

TL;DR: In this article, the authors provide an assessment of sea level simulated in a suite of global ocean-sea ice models using the interannual CORE atmospheric state to determine surface ocean boundary buoyancy and momentum fluxes.

TL;DR: In this paper, the seasonal structure of sea surface salinity of the Bay in a regional high-resolution model forced by ERA-Interim reanalysis and various precipitation products was investigated.

TL;DR: In this article, the authors used the Finite Element Sea ice-ice shelf-Ocean Model (FESOM) to simulate the warm Circumpolar Deep Water (CDW) intrusion onto the Amundsen Sea continental shelf and realistic melt rates of the ice shelves in West Antarctica.

TL;DR: The spectral wave model WAVEWATCH III is extended from the windsea and swell band to lower frequencies, in order to represent free waves in the infragravity (IG) wave band as discussed by the authors.

TL;DR: In this article, the authors applied a high-resolution regional ice shelf/ocean model, constrained by observations, to quantify present basal mass loss at the Fimbul Ice Shelf (FIS) and investigate the oceanic mechanisms that govern the heat supply to ice shelves in the Eastern Weddell Sea.

TL;DR: The application of adaptive mesh refinement algorithms substantially lowers the computational cost of a storm surge model run while retaining much of the desired coastal resolution.

TL;DR: In this paper, a general analysis of discrete variance decay (DVD) caused by advective and diffusive fluxes is established, and a 3D dissipation analysis is developed to quantify the physically and numerically induced loss of kinetic energy.

TL;DR: In this article, the authors present the first sub-mesoscale-resolving study of the flow and vertical transport in the Kerguelen Plateau and find that an increase in horizontal resolution from mesoscale resolution (1/20°) to 1/80° resolves sub-scale frontal structures in which vertical velocities are dramatically higher and are consistent with available observations.

TL;DR: In this article, the authors reformulate a statistical data assimilation method generally used in the estimation of model state variables to estimate the Manning's n coefficient, which is an empirically derived, spatially varying parameter, and depends on many factors such as the bottom surface roughness.

TL;DR: Results show the new background error covariance formulations provide more accurate placement of frontal positions, directions of currents and velocity magnitudes, and a proposed new formulation provides added skill in the implementation of 3DVar systems.

TL;DR: In this article, a multiscale numerical model of the Storegga slide-generated tsunami is presented, where spatial resolution varies from 500m to 50m across the entire Norwegian-Greenland sea domain.

TL;DR: Polynomial Chaos is used to build an inexpensive surrogate for the G eo C law model and employ Bayesian inference to estimate and quantify uncertainties related to relevant parameters using the DART buoy data collected during the Tōhoku tsunami.

TL;DR: In this article, the authors used the Coupled Ocean-Atmosphere-Wave-Sediment Transport (COAWST) model for modeling the wave and current interaction over the Texas-Louisiana shelf and its effects on the dispersal and mixing of the Mississippi-Atchafalaya river plume.

TL;DR: In this article, the authors examined the global distribution of energy conversion rates from barotropic to baroclinic tides using a hydrostatic sigma-coordinate numerical model with a special attention to the dependence on the model grid resolution as well as the model topography resolution.

TL;DR: In this article, a series of idealized numerical models have been developed to investigate the effects of partially resolved symmetric instability (SI) in oceanic general circulation models and reveal three possible outcomes in steady-state: (1) incomplete restratification due to viscosity.

TL;DR: A characterization of extreme wave parameters during extratropical cyclones in the Northern hemisphere is made from WAM wave model hindcasts in this paper, where wave buoy and satellite altimetry data were used to validate the WAM hindcast results.

TL;DR: In this article, the authors quantify the differences in the Lagrangian particle trajectories embedded in velocity fields of varying temporal resolutions and investigate whether adding lateral diffusion to the particle movement can compensate for the reduced temporal resolution.

TL;DR: In this article, a multiple linear regression is used to predict significant wave heights (Hs) using predictors derived from the sea level pressure (SLP) field, including the use of squared SLP gradients to represent geostrophic winds.

TL;DR: In this article, the authors focus on the uncertainties inherent in the method applied to project the wave climate using atmospheric simulations and evaluate the performance of the dynamical and the statistical methods through a comparative analysis of the estimated means, standard deviations and monthly quantile distributions of significant wave heights.

TL;DR: In this paper, the authors analyzed the tropical instability wave (TIW) heat budget in the NEMO model at 1° and 0.25° resolution and found that TIWs in the higher resolution model help to warm the equatorial cold tongue during La Nina events.

TL;DR: In this paper, two models, based on the Environmental Fluid Dynamics Code (EFDC) numerical model with a recently developed Barrage module, were set up with different computational domains.

TL;DR: In this article, a wave-resolving sediment transport model is presented, which is capable of simulating sediment suspension in the field-scale surf zone, and the model can reasonably predict wave-averaged sediment profiles.

TL;DR: In this paper, an ensemble optimal interpolation (EnOI) system is built to assimilate underwater profiling glider observations into a West Florida Shelf (WFS) coastal ocean model.

TL;DR: In this article, the authors compute the sea-ice concentration budget of a fully coupled climate model, the Australian ACCESS model, in order to assess its realism in simulating the autumn-winter evolution of Antarctic sea ice.

TL;DR: In this article, an implicit solver for computing pre-bomb Δ 14 C that requires the equivalent of only a few tens of model years to reach equilibrium is presented. But it is computationally expensive to routinely simulate it with moderate-to high-resolution ocean models.

TL;DR: In this article, the dynamics of argon (Ar), a biogeochemically inert gas, within first year sea ice, using observation data and a one-dimensional halo-thermodynamic sea ice model, including parameterization of gas physics, are modeled following fluid transport equations through sea ice.