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Comparison of extended and ensemble based Kalman filters with low and high resolution primitive equation ocean models
Kalman filters low and high resolution primitive equation ocean models
2009/11/11
Kalman filters are widely used for data assimilation into ocean models. The aim of this study is to discuss the relevance of these filters with high resolution ocean models. This was investigated thro...
Detecting unstable structures and controlling error growth by assimilation of standard and adaptive observations in a primitive equation ocean model
unstable structures error growth standard and adaptive observations primitive equation ocean model
2009/11/9
Oceanic and atmospheric prediction is based on cyclic analysis-forecast systems that assimilate new observations as they become available. In such observationally forced systems, errors amplify depend...
Eddies and the General Circulation of an Idealized oceanic Gyre：A Wind and Thermally Driven Primitive Equation Numerical Experiment
General Circulation Idealized oceanic Gyre Equation Numerical Experiment
2009/3/7
We present the results of a multi-level, constant depth, primitive equation general ocean numerical circulation simulation with mesoscale resolution. A single mid-latitude model gyre is driven by wind...
Intercomparison of Quasi-Geostrophic Simulations of the Western North Atlantic Circulation with Primitive Equation Results
Western North Atlantic Circulation Primitive Equation Results
2009/2/23
The purpose of this paper is to compare two numerical models of vastly different complexity and computational requirements, which have been used recently in a number of midlatitude ocean simulations. ...
Parameter Sensitivity of Primitive Equation Ocean General Circulation Models
Primitive Equation Ocean General Circulation Models Parameter Sensitivity
2009/1/7
Experiments with a low resolution, primitive equation ocean general circulation model with idealized basin geometry and surface forcing have been carried out in order to identify the processes control...
Regional Primitive Equation Studies of the Gulf Stream Meander and Ring Formation Region
Gulf Stream Meander Ring Formation Region Primitive equation
2008/12/27
Primitive equation and quasi-geostrophic eddy resolving, open ocean models are used for hindcast studies in the Gulf Stream meander and ring formation region. A feature model approach is used to initi...
A Nested Primitive Equation Model for Oceanic Applications
Primitive Equation Model Oceanic Applications
2008/12/23
An interactive, nested primitive equation model for oceanic applications is introduced. The model has two components that interact, which we shall call the coarse and the fine grid regions. The fine g...
Eddy Dynamics in a Primitive Equation Model：Sensitivity to Horizontal Resolution and Friction
primitive equation model mesoscale eddies Eddy Dynamics
2008/12/22
A primitive equation model of an idealized ocean basin, driven by simple, study wind and buoyancy forcing at the surface, is used to study the dynamics of mesoscale eddies. Model statistics of a six-y...
Continuous Assimilation of Geosat Altimeter Data into a Three-Dimensional Primitive Equation Gulf Stream Model
Geosat Altimeter Data three-dimensional data Gulf Stream Model
2008/12/15
A three-dimensional data assimilation scheme is described and tested, using the Geosat altimeter data and a high-resolution, primitive equation, numerical ocean model of the Gulf Stream region. The as...
Assimilation of Altimeter Data in a Two-Layer Primitive Equation Model of the Gulf Stream
sea surface height Altimeter Data Two-Layer Primitive Equation Model Gulf Stream
2008/12/15
A two-layer finite depth, primitive equation model of the Gulf Stream region is used to study the effect of updating the model with simulated altimeter data as observations. In this study both a compl...
Two-Way Interactive Nesting of Primitive Equation Ocean Models with Topography
Two-Way Interactive Nesting Topography Primitive Equation Ocean Models
2008/12/12
Two-way interactive nesting of primitive equation ocean models is investigated, with special attention to the problems encountered when oceanic features, for example fronts, intersect the boundaries b...
Mean Circulation and Internal Variability in an Ocean Primitive Equation Model
Ocean Primitive Equation Model World Ocean model ocean circulation
2008/12/9
A primitive equation World Ocean model has been integrated with restoring boundary conditions to reach a steady state. The global distribution of potential temperature, salinity, and meridional stream...
Primitive Equation Instability of Wide Oceanic Rings. Part I：Linear Theory
Wide Oceanic Rings Linear Theory Asymptotic theory
2008/11/18
The linear stability of two-layer primitive equation ocean rings is considered in the case when the rings are wide compared with a deformation radius, as is usually observed. Asymptotic theory is deve...
Parameterization of Quasigeostrophic Eddies in Primitive Equation Ocean Models
Quasigeostrophic Eddies Primitive Equation Ocean Models
2008/11/17
A parameterization of mesoscale eddy fluxes in the ocean should be consistent with the fact that the ocean interior is nearly adiabatic. Gent and McWilliams have described a framework in which this ca...
Primitive-Equation Instability of Wide Oceanic Rings. Part II: Numerical Studies of Ring Stability
Primitive-Equation Instability Wide Oceanic Rings Ring Stability
2008/7/21
The study of barotropic structure and its effects on oceanic ring stability has yielded seemingly conflicting results. Some studies suggest that the stability of a given ring profile is as sensitive t...