Statistical mechanics of Arakawa's Discretizations

Dubinkina, Svetlana;Frank, Jason
(2008) ASP summer colloquium ”Numerical Techniques for Global Atmospheric Models”, NCAR — Location: Boulder, USA (1.June.2008)

Files

No attached file found for this publication.

Details

Authors
  • Dubinkina, SvetlanaUCLouvain
    Author
  • Frank, JasonCWI, the Netherlands
    Author
Abstract
The results of statistical analysis of simulation data obtained from long time integrations of geophysical fluid models greatly depend on the conservation properties of the numerical discretization chosen. This is illustrated for quasi-geostrophic flow with topographic forcing, for which a well established statistical mechanics exists. Statistical mechanical theories are constructed for the discrete dynamical systems arising from three discretizations due to Arakawa (1966) which conserve energy, enstrophy or both. Numerical experiments with conservative and projected time integrators show that the statistical theories accurately explain the differences observed in statistics derived from the discretizations.

Citations

  • APA
  • Chicago
  • FWB

Dubinkina, S., & Frank, J. (2008). Statistical mechanics of Arakawa’s Discretizations. ASP summer colloquium ”Numerical Techniques for Global Atmospheric Models”, NCAR, Boulder, USA. https://hdl.handle.net/2078.5/90059