| 39 | | **AGRIF_DEMO** is based on the **ORCA2_LIM3_PISCES** global 2° configuration with the inclusion of 3 online nested grids that demonstrate the overall capabilities of AGRIF (Adaptive Grid Refinement In Fortran) in a realistic context (including the nesting of sea ice models). |
| 40 | | |
| 41 | | The configuration includes a 1:1 grid in the Pacific and two successively nested grids with odd and even refinement ratios over the Arctic ocean. |
| 42 | | The finest grid spanning the whole Svalbard archipelago is of particular interest to check that sea ice coupling is correctly performed. |
| 43 | | The 1:1 grid, used alone, is used as a benchmark to check that the solution is not corrupted by grid exchanges. |
| 44 | | |
| 45 | | Note that since grids interact only at the baroclinic time level, numerically exact results can not be achieved in the 1:1 case. |
| 46 | | One has to switch to a fully explicit in place of a split explicit free surface scheme in order to retrieve perfect reproducibility. |
| 47 | | |
| 48 | | Corresponding ``AGRIF_FixedGrids.in`` file is given by:: |
| 49 | | |
| 50 | | 2 |
| 51 | | 42 82 49 91 1 1 1 |
| 52 | | 122 153 110 143 4 4 4 |
| 53 | | 0 |
| 54 | | 1 |
| 55 | | 38 80 71 111 3 3 3 |
| 56 | | 0 |
| | 38 | AGRIF_DEMO is based on the *ORCA2_LIM3_PISCES* global 2° configuration with the inclusion of 3 online nested grids that demonstrate the overall capabilities of AGRIF (Adaptive Grid Refinement In Fortran) in a realistic context (including the nesting of sea ice models). |
| | 39 | |
| | 40 | The configuration includes a 1:1 grid in the Pacific and two successively nested grids with odd and even refinement ratios over the Arctic ocean, with the finest grid spanning the whole Svalbard archipelago that is of particular interest to test sea ice coupling. |
| | 41 | |
| | 42 | The 1:1 grid can be used alone as a benchmark to check that the model solution is not corrupted by grid exchanges. |
| | 43 | Note that since grids interact only at the baroclinic time level, numerically exact results can not be achieved in the 1:1 case. Perfect reproducibility is obtained only by switching to a fully explicit setip instead of a split explicit free surface scheme. |
| 61 | | ``AMM12`` for *Atlantic Margin Model 12kms* is a `regional model`_ covering the Northwest European Shelf domain on |
| 62 | | a regular lat-lon grid at approximately 12km horizontal resolution. |
| 63 | | The key ``key_amm_12km`` is used to create the correct dimensions of the AMM domain. |
| 64 | | |
| 65 | | | This configuration tests several features of NEMO functionality specific to the shelf seas. |
| 66 | | | In particular, the AMM uses s-coordinates in the vertical rather than z-coordinates and is forced with |
| 67 | | tidal lateral boundary conditions using a flather boundary condition from the BDY module (``key_bdy``). |
| 68 | | |
| 69 | | The AMM configuration uses the GLS (``key_zdfgls``) turbulence scheme, |
| 70 | | the VVL non-linear free surface (``key_vvl``) and time-splitting (``key_dynspg_ts``). |
| 71 | | |
| 72 | | In addition to the tidal boundary condition, the model may also take open boundary conditions from |
| 73 | | a North Atlantic model. |
| 74 | | Boundaries may be completely ommited by removing the BDY key (key_bdy) in ``./cfgs/AMM12/cpp_AMM12_fcm``. |
| 75 | | |
| 76 | | Sample surface fluxes, river forcing and a sample initial restart file are included to test a realistic model run. |
| 77 | | The Baltic boundary is included within the river input file and is specified as a river source. |
| 78 | | Unlike ordinary river points the Baltic inputs also include salinity and temperature data. |
| | 48 | AMM12 stands for *Atlantic Margin Model at 12 km* that is a regional configuration covering the Northwest European Shelf domain on a regular horizontal grid of ~12 km of resolution (see `O'Dea et al., 2012 <http://www.tandfonline.com/doi/pdf/10.1080/1755876X.2012.11020128>`_). |
| | 49 | |
| | 50 | This configuration allows to tests several features of NEMO specifically addressed to the shelf seas. |
| | 51 | In particular, AMM12 accounts for vertical s-coordinates system, GLS turbulence scheme, tidal lateral boundary conditions using a flather scheme (see more in BDY). |
| | 52 | Boundaries may be completely omitted by setting ``ln_bdy = .false.`` in nambdy. |
| | 53 | |
| | 54 | Sample surface fluxes, river forcing and an initial restart file are included to test a realistic model run (AMM12_v4.0.tar_). |
| | 55 | |
| | 56 | Note that, the Baltic boundary is included within the river input file and is specified as a river source, but unlike ordinary river points the Baltic inputs also include salinity and temperature data. |
