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The application of Jacobian-free Newton–Krylov methods to reduce the spin-up time of ocean general circulation models
- Source :
-
Journal of Computational Physics . Oct2010, Vol. 229 Issue 21, p8167-8179. 13p. - Publication Year :
- 2010
-
Abstract
- Abstract: In present-day forward time stepping ocean-climate models, capturing both the wind-driven and thermohaline components, a substantial amount of CPU time is needed in a so-called spin-up simulation to determine an equilibrium solution. In this paper, we present methodology based on Jacobian-Free Newton–Krylov methods to reduce the computational time for such a spin-up problem. We apply the method to an idealized configuration of a state-of-the-art ocean model, the Modular Ocean Model version 4 (MOM4). It is shown that a typical speed-up of a factor 10–25 with respect to the original MOM4 code can be achieved and that this speed-up increases with increasing horizontal resolution. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219991
- Volume :
- 229
- Issue :
- 21
- Database :
- Academic Search Index
- Journal :
- Journal of Computational Physics
- Publication Type :
- Academic Journal
- Accession number :
- 53318141
- Full Text :
- https://doi.org/10.1016/j.jcp.2010.07.015