| 129 | | * 'grid' : The grid type defines the grids (regular or irregular like the ORCA grid) to read. For instance, post_it will read grids_ncpt62.nc which is stored in 'IDL/Defaults/Grids'. This grid is considered as regular (because you specified it in plt_def.pro in the variable 'nc_grid_list'). This file contains 3 variables : the land sea mask fraction, latitudes as a 1D variable and longitudes as a 1D variables. And post_it through saxo routines will build the grid with the help of those variables : gphit (eg latitudes), glamt (longitudes), tmask (masks on T-points), e1t (scale factor along x), e2t (scale factor along y) as 2D variables... Usually the atmospheric grids are regular. You can get easily the 'grids_...' files through the IPCC database1 with the variable 'sftlf' and build a new âgridâ. At the moment, only 2D field can be read from these grid. If the variable is stored in an irregular grid, things are a bit more complicated to build a new grid readable by post_it and saxo. You will need to build a file where the variables gphit, glamt, glamu, glamv, tmask... are already stored. For the moment, the ORCA grid (NEMO, IPSL) and the MICOM grid (BCM model, NERSC) can be read (even 3D fields). These grids are Arakawa C-type with T, U, V and F points. |
| | 129 | * 'grid' : The grid type defines the grids (regular or irregular like the ORCA grid) to read. For instance, post_it will read grids_ncpt62.nc which is stored in 'IDL/Defaults/Grids'. This grid is considered as regular (because you specified it in plt_def.pro in the variable 'nc_grid_list'). This file contains 3 variables : the land sea mask fraction, latitudes as a 1D variable and longitudes as a 1D variables. And post_it through saxo routines will build the grid with the help of those variables : gphit (eg latitudes), glamt (longitudes), tmask (masks on T-points), e1t (scale factor along x), e2t (scale factor along y) as 2D variables... Usually the atmospheric grids are regular. You can get easily the 'grids_...' files through the IPCC database with the variable 'sftlf' and build a new âgridâ. At the moment, only 2D field can be read from these grid. If the variable is stored in an irregular grid, things are a bit more complicated to build a new grid readable by post_it and saxo. You will need to build a file where the variables gphit, glamt, glamu, glamv, tmask... are already stored. For the moment, the ORCA grid (NEMO, IPSL) and the MICOM grid (BCM model, NERSC) can be read (even 3D fields). These grids are Arakawa C-type with T, U, V and F points. |
