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| Title: | Lateral Open Boundary Conditions for Nested Limited Area Model: Process selective approach |
| Authors: | Oddo, P.*
Pinardi, N.* |
| Keywords: | Laqteral boundary conditions |
| Issue Date: | 2008 |
| Publisher: | ELSEVIER |
| Title of journal: | Ocean Modelling |
| Series/Report no.: | /20 (2008) |
| Abstract: | This paper reviews current approaches to the lateral open boundary condition problem for nested regional primitive
equation ocean numerical models and proposes a new approach that considers a scale decomposition of the nesting field
variables for the barotropic lateral velocity boundary conditions. The Flather [Flather, R.A., 1976. A tidal model of the
north-west European continental shelf. Memories de la Societe Royale des Sciences de Liege 6 (10):141–164] open lateral
boundary condition is derived from mass conservation considerations and we use this approach to derive a generalized
lateral open boundary condition for barotropic velocities. In addition we do a scale selective decomposition of the generalized
Flather obtaining new and general lateral scale dependent boundary conditions. The performance of the new lateral
boundary conditions have been evaluated in two kinds of experiments: (1) idealized and (2) realistic frameworks. In the
idealized framework, as well as the realistic case, the results confirms that the scale selective open boundary conditions
improves the solution almost everywhere but in particular in the shallow depth parts of the model domain. In the realistic
case the assessment is more difficult and it is connected also to the capability of the nesting and nested model to reproduce
the dynamics contained in the observations. |
| URI: | http://hdl.handle.net/2122/3485 |
| URL: | http://dx.doi.org/10.1016/j.ocemod.2007.08.001 |
| DOI: | 10.1016/j.ocemod.2007.08.001 |
| Appears in Collections: | Papers Published / Papers in press
03.01.01. Analytical and numerical modeling
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