The numerics of hydrostatic structured-grid coastal ocean models: state of the art and future perspectives - Archive ouverte HAL Access content directly
Journal Articles Ocean Modelling Year : 2018

The numerics of hydrostatic structured-grid coastal ocean models: state of the art and future perspectives

(1) , (2) , (2) , (3)
1
2
3

Abstract

The state of the art of the numerics of hydrodynamic non-hydrostatic structured-grid coastal ocean models is reviewed here. First, some fundamental differences in the hydrodynamics of the coastal ocean, such as the large surface elevation variation compared to the mean water depth, are contrasted against large scale ocean dynamics. Then the hydrodynamic equations as they are used in coastal ocean models as well as in large scale ocean models are presented, including parameterisations for turbulent transports. As steps towards discretisation, coordinate transformations and vertical and horizontal discretisations based on a finite-volume approach are discussed with focus on the specific requirements for coastal ocean models. As in large scale ocean models, splitting of internal and external modes is essential also for coastal ocean models, but specific care is needed when wetting an drying of inter-tidal flats is included. As one obvious characteristics of coastal ocean models, open boundaries occur and need to be treated in a way that correct model forcing from outside is transmitted to the model domain without reflecting waves from the inside. Here, also new developments in two-way nesting are presented. Single processes such as internal inertia-gravity waves, advection and turbulence closure models are discussed with focus on the coastal scales. Some overview on existing hydrostatic structured-grid coastal ocean models is given, including their extensions towards non-hydrostatic models. Finally, an outlook on future perspectives is made.
Fichier principal
Vignette du fichier
coastal_review_omod_2018.pdf (1.25 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01443357 , version 1 (23-01-2017)
hal-01443357 , version 2 (05-02-2018)
hal-01443357 , version 3 (05-02-2018)

Identifiers

Cite

Knut Klingbeil, Florian Lemarié, Laurent Debreu, Hans Burchard. The numerics of hydrostatic structured-grid coastal ocean models: state of the art and future perspectives. Ocean Modelling, 2018, 125, pp.80-105. ⟨10.1016/j.ocemod.2018.01.007⟩. ⟨hal-01443357v3⟩
812 View
1646 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More