Case 3: Global T254 Case
Setting Up the GSI Observer Run
- Edit the GSI observer run script in comgsi_run_gfs.ksh:
- The example run script (comgsi_run_gfs.ksh) is located in the comGSIv3.7_EnKFv1.3/ush directory of the GSI/EnKF system. Make the following changes to the script in order to run this case:
ANAL_TIME 2014092918 GFSCASE enkf_glb_t62 JOB_DIR (PATH)/run RUN_NAME case25-observer-gfs OBS_ROOT PATH/enkf_glb_T62/obs BK_ROOT PATH/enkf_glb_T62/bkg GSI_ROOT PATH/comGSIv3.7_EnKFv1.3 CRTM_ROOT PATH/CRTM_2.2.3 GSI_EXE ${JOB_DIR}/gsi.x WORK_ROOT ${JOB_DIR}/${RUN_NAME} FIX_ROOT ${GSI_ROOT}/fix GSI_NAMELIST ${GSI_ROOT}/ush/comgsi_namelist_gfs.sh PREPBUFR ${OBS_ROOT}/gdas1.t18z.prepbufr.nr - Job head:
- This depends on the specifics of your computer system such as operating system and batch queue, if any.
- Define number of cores and machine type
- define the following variables in comgsi_run_gfs.ksh based on previous setup:
- NOTE:
- The PATH should be replaced with a real path in your computer.
- Define run GSI observer only and ensemble members
- Background ensemble is set for GFS naming convention. When if_observer=Yes is set, GSI only run observation operator part and skip the minimaztion:
if_observer=Yes no_member=10
In this example we are running the enkf_glb_t62 spectral resolution case.
The example script can be found : here
