event
Monday 16 Jan 2012: A finite element shallow water model on the sphere: Model setup and grid refinement (Taylor and Francis sponsored)
Peter Dueben - Max Planck Institute for Meteorology, Hamburg
203 15:00-16:00
We study the applicability of a new low order finite element in
atmosphere and ocean modeling, and its performance on refined grids. The
element is attractive because it satisfies a necessary stability
criterion (the Ladyzhenskaya-Babuska-Brezzi condition) and is, at the
same time, able to represent the crucially important geostrophic balance.
The finite element is used to solve the viscous and inviscid shallow
water equations on a rotating sphere. We test the model on the typical
set of shallow water test cases, and investigate the errors caused by
grid refinement, such as reflections and scatterings, but also the scope
of improvements possible with a deliberated use of grid refinement