A Comparison of Two Shallow Water Models with Non-Conforming Adaptive Grids: classical tests

Details A Comparison of Two Shallow Water Models with Non-Conforming Adaptive Grids: classical tests A Comparison of Two Shallow Water Models with Non-Conforming Adaptive Grids: classical tests

2007-02-16

arxiv.org/abs/physics/0702133v1

Physics

Computational Physics

25 pages, 11 figures, preprint

Scientific paper

10.1175/2007MWR2108.1

In an effort to study the applicability of adaptive mesh refinement (AMR) techniques to atmospheric models an interpolation-based spectral element shallow water model on a cubed-sphere grid is compared to a block-structured finite volume method in latitude-longitude geometry. Both models utilize a non-conforming adaptation approach which doubles the resolution at fine-coarse mesh interfaces. The underlying AMR libraries are quad-tree based and ensure that neighboring regions can only differ by one refinement level. The models are compared via selected test cases from a standard test suite for the shallow water equations. They include the advection of a cosine bell, a steady-state geostrophic flow, a flow over an idealized mountain and a Rossby-Haurwitz wave. Both static and dynamics adaptations are evaluated which reveal the strengths and weaknesses of the AMR techniques. Overall, the AMR simulations show that both models successfully place static and dynamic adaptations in local regions without requiring a fine grid in the global domain. The adaptive grids reliably track features of interests without visible distortions or noise at mesh interfaces. Simple threshold adaptation criteria for the geopotential height and the relative vorticity are assessed.

Affiliated with

Also associated with

No associations

Rating

A Comparison of Two Shallow Water Models with Non-Conforming Adaptive Grids: classical tests does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Comparison of Two Shallow Water Models with Non-Conforming Adaptive Grids: classical tests, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Comparison of Two Shallow Water Models with Non-Conforming Adaptive Grids: classical tests will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-196861