Variable resolution on quasi-uniform grids: linear advection experiments |
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| Authors: | M Ran?i? H Zhang |
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| Institution: | (1) Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, USA |
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| Abstract: | Summary A couple of different techniques for implementing the variable resolution within numerical models of the atmosphere that use
quasi-uniform grids are estimated and compared based on their merit in the simple linear advection experiments. These techniques
are: grid stretching, Schmidt transforming and grid overlapping. The quasi-uniform grids are: a conformal cubic and an octagonal
grid. The techniques for the variable resolution are evaluated from the perspective of their effects on numerical solution
and the practicality of their application. Our analysis suggests that the grid stretching is for now the most optimal choice.
However, a special form of grid overlapping is presented that has potential to become a viable alternative in the future. |
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