A framework to evaluate IMEX schemes for atmospheric models
release_wevsfs37yzd4xnkbebo5pskhom
by
Oksana Guba, Mark Taylor, Andrew M. Bradley, Peter A. Bosler, Andrew Steyer
2020 Volume 13, Issue 12, p6467-6480
Abstract
Abstract. We present a new evaluation framework for implicit and explicit (IMEX) Runge–Kutta time-stepping schemes.
The new framework uses a linearized nonhydrostatic system of normal modes.
We utilize the framework to investigate the stability of IMEX methods and their dispersion and dissipation of gravity, Rossby, and acoustic waves.
We test the new framework on a variety of IMEX schemes and
use it to develop and analyze a set of second-order low-storage IMEX Runge–Kutta methods with a high Courant–Friedrichs–Lewy (CFL) number.
We show that the new framework is more selective than the 2-D acoustic system previously used in the literature.
Schemes that are stable for the 2-D acoustic system are not stable for the system of normal modes.
In application/xml+jats
format
Archived Files and Locations
application/pdf 3.3 MB
file_4bgfwkfrb5avfinrbpivz7bgve
|
gmd.copernicus.org (publisher) web.archive.org (webarchive) |
Open Access Publication
In DOAJ
In ISSN ROAD
In Keepers Registry
ISSN-L:
1991-959X
access all versions, variants, and formats of this works (eg, pre-prints)
Crossref Metadata (via API)
Worldcat
SHERPA/RoMEO (journal policies)
wikidata.org
CORE.ac.uk
Semantic Scholar
Google Scholar