The creative commons license for this article was changed on 20 November 2013 after original online publication.
Performance of the cut-cell method of representing orography in idealized simulations†
Article first published online: 19 OCT 2013
© 2013 The Authors. Atmospheric Science Letters published by John Wiley & Sons Ltd on behalf of the Royal Meteorological Society.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Atmospheric Science Letters
Volume 15, Issue 1, pages 44–49, January/March 2014
How to Cite
Good, B., Gadian, A., Lock, S.-J. and Ross, A. (2014), Performance of the cut-cell method of representing orography in idealized simulations. Atmosph. Sci. Lett., 15: 44–49. doi: 10.1002/asl2.465
- Issue published online: 21 JAN 2014
- Article first published online: 19 OCT 2013
- Manuscript Accepted: 29 AUG 2013
- Manuscript Revised: 21 AUG 2013
- Manuscript Received: 20 MAY 2013
- numerical methods;
- idealized simulations;
- high resolution;
- finite volume
Several tests of a model with a cut-cell representation of orography are presented: a resting atmosphere test, advection across a hill and a warm rising bubble over hills with different gradients. The tests are compared with results from terrain-following models. Results indicate that errors associated with terrain-following coordinates are reduced, in some cases greatly reduced, with the cut-cell approach. In a resting atmosphere, the cut-cell approach does not generate flow around an isolated hill however steep the terrain. Relative errors in a rising bubble test are an order of magnitude smaller than terrain-following simulations.