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Performance of four turbulence closure models implemented using a generic length scale method
A two-equation turbulence model (one equation for turbulence kinetic energy and a second for a generic turbulence length-scale quantity) proposed by Umlauf and Burchard [J. Marine Research 61 (2003)Expand
Model evaluation experiments in the North Atlantic Basin : simulations in nonlinear terrain-following coordinates
Abstract A primitive equation ocean circulation model in nonlinear terrain-following coordinates is applied to a decadal-length simulation of the circulation in the North Atlantic Ocean. In additionExpand
Development of a three-dimensional, regional, coupled wave, current, and sediment-transport model
We are developing a three-dimensional numerical model that implements algorithms for sediment transport and evolution of bottom morphology in the coastal-circulation model Regional Ocean ModelingExpand
North Pacific Gyre Oscillation links ocean climate and ecosystem change
Decadal fluctuations in salinity, nutrients, chlorophyll, a variety of zooplankton taxa, and fish stocks in the Northeast Pacific are often poorly correlated with the most widely-used index ofExpand
Ocean forecasting in terrain-following coordinates: Formulation and skill assessment of the Regional Ocean Modeling System
The combination of moderate-order spatial approximations, enhanced conservation properties, and quasi-monotone advection produces both more robust and accurate, and less diffusive, solutions than those produced in earlier terrain-following ocean models. Expand
A comprehensive ocean prediction and analysis system based on the tangent linear and adjoint of a regional ocean model
The regional ocean modelling system (ROMS) is a new generation ocean general circulation model that is rapidly gaining favour in the ocean modelling community. The tangent linear and adjoint versionsExpand
The Regional Ocean Modeling System (ROMS) 4-dimensional variational data assimilation systems Part I - System overview and formulation
Several powerful 4D-Var diagnostic tools are discussed, namely computation of posterior errors, eigenvector analysis of the posterior error covariance, observation impact, and observation sensitivity. Expand
Developments in terrain-following ocean models: intercomparisons of numerical aspects
New pressure gradient schemes using polynomial fits and new time stepping algorithms may reduce numerical errors and allow using longer time steps than standard schemes do, but the new schemes may require more careful choices of time steps and the use of higher order advection schemes to maintain numerical stability. Expand
4DVAR data assimilation in the Intra-Americas Sea with the Regional Ocean Modeling System (ROMS)
Abstract We present the background, development, and preparation of a state-of-the-art 4D variational (4DVAR) data assimilation system in the Regional Ocean Modeling System (ROMS) with an applicationExpand
Water mass pathways between the subtropical and tropical ocean in a climatological simulation of the North Atlantic ocean circulation
Abstract A primitive equation, hydrostatic, terrain-following coordinate ocean general circulation model (OGCM) is used to investigate the mean water mass pathways from the subtropics to the tropicsExpand