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| #!/bin/bash | ||
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| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # This script generates grid and orography files in NetCDF format that | ||
| # are required as inputs for running the FV3SAR model (i.e. the FV3 mo- | ||
| # del on a regional domain). It in turn calls three other scripts whose | ||
| # file names are specified in the variables grid_gen_scr, orog_gen_scr, | ||
| # and orog_fltr_scr and then calls the executable defined in the varia- | ||
| # ble shave_exec. These scripts/executable perform the following tasks: | ||
| # | ||
| # 1) grid_gen_scr: | ||
| # | ||
| # This script generates grid files that will be used by subsequent | ||
| # preprocessing steps. It places its output in the temporary direc- | ||
| # tory defined in GRID_DIR. Note that: | ||
| # | ||
| # a) This script creates grid files for each of the 7 tiles of the | ||
| # cubed sphere grid (where tiles 1 through 6 cover the globe, and | ||
| # tile 7 is the regional grid located somewhere within tile 6) | ||
| # even though the forecast will be performed only on tile 7. | ||
| # | ||
| # b) The tile 7 grid file that this script creates includes a halo, | ||
| # i.e. a layer of cells beyond the boundary of tile 7). The width | ||
| # of this halo (i.e. the number of cells in the halo in the direc- | ||
| # tion perpendicular to the boundary of the tile) must be made | ||
| # large enough such that the "shave" steps later below (which take | ||
| # this file as input and generate grid files with thinner halos) | ||
| # have a wide enough starting halo to work with. More specifical- | ||
| # ly, the FV3SAR model needs as inputs two grid files: one with a | ||
| # halo that is 3 cells and another with a halo that is 4 cells | ||
| # wide. Thus, the halo in the grid file that the grid_gen_scr | ||
| # script generates must be greater than 4 since otherwise, the | ||
| # shave steps would shave off cells from within the interior of | ||
| # tile 7. We will let nhw_T7 denote the width of the halo in the | ||
| # grid file generated by grid_gen_scr. The "n" in this variable | ||
| # name denotes number of cells, the "h" is used to indicate that | ||
| # it refers to a halo region, the "w" is used to indicate that it | ||
| # refers to a wide halo (i.e. wider than the 3-cell and 4-cell ha- | ||
| # los that the FV3SAR model requires as inputs, and the "T7" is | ||
| # used to indicate that the cell count is on tile 7. | ||
| # | ||
| # 2) orog_gen_scr: | ||
| # | ||
| # This script generates the orography file. It places its output in | ||
| # the temporary directory defined in OROG_DIR. Note that: | ||
| # | ||
| # a) This script generates an orography file only on tile 7. | ||
| # | ||
| # b) This orography file contains a halo of the same width (nhw_T7) | ||
| # as the grid file for tile 7 generated by the grid_gen_scr script | ||
| # in the previous step. | ||
| # | ||
| # 3) orog_fltr_scr: | ||
| # | ||
| # This script generates a filtered version of the orography file ge- | ||
| # nerated by the script orog_gen_scr. This script places its output | ||
| # in the temporary directory defined in WORKDIR_FLTR. Note that: | ||
| # | ||
| # a) The filtered orography file generated by this script contains a | ||
| # halo of the same width (nhw_T7) as the (unfiltered) orography | ||
| # file generated by script orog_gen_scr (and the grid file genera- | ||
| # ted by grid_gen_scr). | ||
| # | ||
| # b) In analogy with the input grid files, the FV3SAR model needs as | ||
| # input two (filtered) orography files -- one with no halo cells | ||
| # and another with 3. These are obtained later below by "shaving" | ||
| # off layers of halo cells from the (filtered) orography file ge- | ||
| # nerated in this step. | ||
| # | ||
| # 4) shave_exec: | ||
| # | ||
| # This "shave" executable is called 4 times to generate 4 files from | ||
| # the tile 7 grid file generated by grid_gen_scr and the tile 7 fil- | ||
| # tered orography file generated by orog_fltr_scr (both of which have | ||
| # a halo of width nhw_T7 cells). The 4 output files are placed in | ||
| # the temporary directory defined in WORKDIR_SHVE. More specifically: | ||
| # | ||
| # a) shave_exec is called to shave the halo in the tile 7 grid file | ||
| # generated by grid_gen_scr down to a width of 3 cells and store | ||
| # the result in a new grid file in WORKDIR_SHVE. | ||
| # | ||
| # b) shave_exec is called to shave the halo in the tile 7 grid file | ||
| # generated by grid_gen_scr down to a width of 4 cells and store | ||
| # the result in a new grid file in WORKDIR_SHVE. | ||
| # | ||
| # c) shave_exec is called to shave the halo in the tile 7 filtered | ||
| # orography file generated by orog_fltr_scr down to a width of 0 | ||
| # cells (i.e. no halo) and store the result in a new filtered oro- | ||
| # graphy file in WORKDIR_SHVE. | ||
| # | ||
| # d) shave_exec is called to shave the halo in the tile 7 filtered | ||
| # orography file generated by orog_fltr_scr down to a width of 4 | ||
| # cells and store the result in a new filtered orography file in | ||
| # WORKDIR_SHVE. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
|
|
||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # Source the variable definitions script and the function definitions | ||
| # file. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| . $SCRIPT_VAR_DEFNS_FP | ||
| . $USHDIR/source_funcs.sh | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # Save current shell options (in a global array). Then set new options | ||
| # for this script/function. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| { save_shell_opts; set -u -x; } > /dev/null 2>&1 | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # Set the script name and print out an informational message informing | ||
| # the user that we've entered this script. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| script_name=$( basename "${BASH_SOURCE[0]}" ) | ||
| print_info_msg "\n\ | ||
| ======================================================================== | ||
| Entering script: \"${script_name}\" | ||
| This is the J-job script for the task that generates grid files. | ||
| ========================================================================" | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # Export select variables. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| export gtype | ||
| export stretch_fac | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # Call the ex-script for this J-job and pass to it the necessary varia- | ||
| # bles. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| ${SCRIPTSDIR}/exregional_make_grid.sh \ | ||
| WORKDIR_LOCAL="ABCD" || \ | ||
| print_err_msg_exit "${script_name}" "\ | ||
| Call to ex-script corresponding to J-job \"${script_name}\" failed." | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # Create a flag file to make rocoto aware that the make_grid task has | ||
| # successfully completed (so that other tasks that depend on it can be | ||
| # launched). | ||
| # | ||
| # Although we can use the <taskdep> tag to make other tasks depend on | ||
| # the successful completion of make_grid, it turns out that the <task- | ||
| # dep> tag assumes that the task it specifies (in this case make_grid) | ||
| # runs for the same set of cycles as the one in which it appears as a | ||
| # dependency. Thus, if we use <taskdep> in a cycle-dependent task in | ||
| # the workflow to make it depend on the make_grid, then the workflow | ||
| # will wait for make_grid to run for each cycle for which that cycle-de- | ||
| # pendent task is defined before running the task. But since make_grid | ||
| # will not run for each cycle (except possibly for the very first one), | ||
| # the cycle-dependent task will not be able to run for any of the cycles | ||
| # except the first one. For this reason, we cannot use the <taskdep> | ||
| # tag to make other cycle-dependent tasks depend on make_grid and must | ||
| # instead use a flag file. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| touch "$LOGDIR/make_grid_task_complete.txt" | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # Print exit message. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| print_info_msg "\n\ | ||
| ======================================================================== | ||
| Exiting script: \"${script_name}\" | ||
| ========================================================================" | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| # Restore the shell options saved at the beginning of this script/func- | ||
| # tion. | ||
| # | ||
| #----------------------------------------------------------------------- | ||
| # | ||
| { restore_shell_opts; } > /dev/null 2>&1 | ||
|
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