Grid Configuration
MPIOM model uses an orthogonal spherical coordinate system. It supports global curvilinear bipolar and tripolar grids.
Grid generation methods are based on conformal mapping. The general goals are:
- to remove grid singularities (e.g. the North Pole) from the ocean domain.
- maintain local orthogonality and a smooth variation in grid size.
- remove land points from the computational matrix.
- increased horizontal resolution for regional studies.
Implementation of the curvilinear grid is omnipresent throughout the model code with the exception of purely vertical operations such as convection. Grid generation software is available with the model code.
(An overview on grid generation methods used in ocean models can be found in Murray, RJ, 1996: Explicit generation of orthogonal grids for ocean models, J. Comput. Phys., 126, 251-273.)
Example GR15
- Example model configuration used in IPCC AR4 / AR5 (LR) experiments. Every 5th grid line is shown.
Example TP04
- Example of a "tripolar" setup as used in the medium resolution AR5 (MR) experiments. Every 5th grid line is shown.
Example GI3
- Example of a grid setup with high resolution in the North Atlantic/Arctic region. Every 5th grid line is shown.
Atmospheric Forcing
Atmospheric forcing and initial data for temperature and salinity based on
PHCis available for the standard grid configurations. Software for generation of input files for other setups is included in the mpiom package.
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