A Three-Dimensional Baroclinic Model of the Irish Sea: Formation of the Thermal Fronts and Associated Circulation

Xing, Jiuxing; Davies, Alan M.

doi:10.1175/1520-0485(2001)031<0094:atdbmo>2.0.co;2

Cited by 67 publications

(117 citation statements)

References 28 publications

Supporting

Mentioning

108

Contrasting

Order By: Relevance

“…The first reproduction of the western Irish Sea gyre was obtained by the application of a threedimensional diagnostic model, giving good agreement with previous observations, Hill et al (1996), Hill et al (1997). Horsburgh (1999), Xing and Davies (2001) and Horsburgh and Hill (2003) applied a three-dimensional density-resolving model and succeeded to predict the gyre in a prognostic manner. Good agreement was achieved, and the accuracy of temperature field prediction depended on the advection scheme implemented and the choice of turbulent model parameters.…”

Section: Introductionsupporting

confidence: 78%

Influence of seasonal circulation on flushing of the Irish Sea

Dabrowski

Hartnett

Olbert

2010

Marine Pollution Bulletin

View full text Add to dashboard Cite

show abstract

Section: Introductionsupporting

confidence: 78%

Influence of seasonal circulation on flushing of the Irish Sea

Dabrowski

Hartnett

Olbert

2010

Marine Pollution Bulletin

View full text Add to dashboard Cite

show abstract

“…The vertical velocity ω, which appears in the threedimensional advection terms, is obtained diagnostically from the continuity equation (Xing and Davies 2001b), with the pressure P at any depth σ given by…”

Section: The Three-dimensional Non-linear Numerical Modelmentioning

confidence: 99%

“…The terms S U , S V , S T represent the full three-dimensional momentum advection terms, with D U , D V , D T the horizontal diffusion terms. Details of the mathematical formulation of these terms are given in Xing and Davies (2001b). Horizontal viscosity (A m ) and diffusivity (A h ) were given by A m =100 m 2 s −1 and A h =100 m 2 s −1 .…”

Section: The Three-dimensional Non-linear Numerical Modelmentioning

confidence: 99%

“…The objective of the present paper is to use a threedimensional non-linearmodel [which has been extensively applied in realistic sea regions (Xing and Davies 2001b;Xing et al 1999)] in cross-sectional form, to examine the importance of horizontal grid resolution, (particularly in near coastal regions where the internal waves are produced) upon the generation and propagation of internal waves. The effect of the value of horizontal diffusion upon this propagation is also considered.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of coastal boundary resolution and mixing upon internal wave generation and propagation in coastal regions

Hall

Davies

2005

Ocean Dynamics

Self Cite

View full text Add to dashboard Cite

A non-linear two-dimensional vertically stratified cross-sectional model of a constant depth basin without rotation is used to investigate the influence of vertical and horizontal diffusion upon the wind-driven circulation in the basin and the associated temperature field. The influence of horizontal grid resolution, in particular the application of an irregular grid with high resolution in the coastal boundary layer is examined. The calculations show that the initial response to a wind impulse is downwelling at the downwind end of the basin with upwelling and convective mixing at the opposite end. Results from a two-layer analytical model show that the initial response is the excitation of an infinite number of internal seiche modes in order to represent the initial response which is confined to a narrow near coastal region. As time progresses, at the downwind end of the basin a density front propagates away from the boundary, with the intensity of its horizontal gradient and associated vertical velocity determined by both horizontal and vertical viscosity values. Calculations demonstrate the importance of high horizontal grid resolution in resolving this density gradient together with an accurate density advection scheme. The application of an irregular grid in the horizontal with high grid resolution in the nearshore region enables the initial response to be accurately reproduced although physically unrealistic short waves appear as the frontal region propagates onto the coarser grid. Parameterization of horizontal viscosity using a Smagorinsky-type formulation acts as a selective grid size-dependent filter, and removes the short-wave problem although enhanced smoothing can occur if the scaling coefficient in the formulation is too large. Calculations clearly show the advantages of using an irregular grid but also the importance of using a grid size-dependent filter to avoid numerical problems.

show abstract

“…As they are discussed in detail in Xing and Davies (2001b) they will not be repeated here, except to give a general overview of their basic form.…”

Section: The Hydrodynamic Equations Topography Of the Region And Chmentioning

confidence: 99%

Comparison of finite difference and element models of internal tides on the Malin–Hebrides shelf

Hall

Davies

2005

Ocean Dynamics

Self Cite

View full text Add to dashboard Cite

A three-dimensional baroclinic finite element model with a coarse and fine (i.e. local refinement along the shelf edge) grid is used to examine the influence of shelf edge grid refinement upon the internal tide generation and propagation off the west coast of Scotland. Comparisons are made with observations in the region and with a published solution using a finite difference model. The calculations show that provided that the finite element grid is refined in the internal tide generation area and the adjacent region through which the internal tide propagates, then a numerically accurate solution is obtained. In the regions of strong internal tide generation with a local grid refinement, internal wave energy can accumulate at small scales and must be removed by a scale-selective filter.

show abstract

A Three-Dimensional Baroclinic Model of the Irish Sea: Formation of the Thermal Fronts and Associated Circulation

Cited by 67 publications

References 28 publications

Influence of seasonal circulation on flushing of the Irish Sea

Influence of seasonal circulation on flushing of the Irish Sea

Effect of coastal boundary resolution and mixing upon internal wave generation and propagation in coastal regions

Comparison of finite difference and element models of internal tides on the Malin–Hebrides shelf

Contact Info

Product

Resources

About