Numerical filters (presentation, 2002)
Presentation of Piet Termonia during the ALATNET training course on Numerical Analysis in Kranjska Gora, 29-31 May 2002.
- why do we need filters in the first place ?
- set the stage : notions, spectral, types
- NWP: discretization and truncation
- increasing the efficiency
The specific LAM coupling problem seen as a filter
- spurious reflections
- flow relaxation : Davies scheme
- implementation in ALADIN