The GridStat use case utilizes the MET Grid-Stat tool.
Optional: Refer to the MET Users Guide for a description of the MET tools used in this use case.
Optional: Refer to the METplus Config Glossary section of the METplus Users Guide for a reference to METplus variables used in this use case.
Change to the ${METPLUS_TUTORIAL_DIR}
- Review the use case configuration file: GridStat.conf
Open the file and look at all of the configuration variables that are defined. This use-case shows a simple example of running Grid-Stat on 3-hour accumulated precipitation forecasts from WRF to Stage II quantitative precipitation estimates.
Note: Forecast and observation variables are referred to individually including reference to both the NAMES and LEVELS, which relate to .
FCST_VAR1_NAME = APCP
# List of levels to evaluate for forecast variable 1
# A03 = 3 hour accumulation in GRIB file
FCST_VAR1_LEVELS = A03
# Name of observation variable 1
OBS_VAR1_NAME = APCP_03
# List of levels to evaluate for observation variable 1
# (*,*) is NetCDF notation - must include quotes around these values!
# must be the same length as FCST_VAR1_LEVELS
OBS_VAR1_LEVELS = "(*,*)"
Which relates to the following fields in the MET configuration file
field = [
{
name = "APCP";
level = [ "A03" ];
}
];
}
obs = {
field = [
{
name = "APCP_03";
level = [ "(*,*)" ];
}
];
}
Also note: Paths in GridStat.conf may reference other config options defined in a different configuration files. For example:
where INPUT_BASE which is set in the tutorial.conf configuration file. METplus config variables can reference other config variables even if they are defined in a config file that is read afterwards.
- Run the use case:
${METPLUS_BUILD_BASE}/parm/use_cases/met_tool_wrapper/GridStat/GridStat.conf \
${METPLUS_TUTORIAL_DIR}/tutorial.conf \
config.OUTPUT_BASE=${METPLUS_TUTORIAL_DIR}/output/GridStat
METplus is finished running when control returns to your terminal console and you see the following text:
-
Review the output files:
You should have output files in the following directories:
-
grid_stat_WRF_APCP_vs_MC_PCP_APCP_03_120000L_20050807_120000V_eclv.txt
-
grid_stat_WRF_APCP_vs_MC_PCP_APCP_03_120000L_20050807_120000V.stat
-
grid_stat_WRF_APCP_vs_MC_PCP_APCP_03_120000L_20050807_120000V_grad.txt
Take a look at some of the files to see what was generated. Beyond the .stat file, the Economic Cost/Loss Value (eclv) and Gradient (grad) line types were also written to separate .txt files. If you inspect ${METPLUS_BUILD_BASE}/parm/met_config/GridStatConfig_wrapped, you will notice that the ctc and cts line type settings are "STAT" while eclv and grad line types are set to "BOTH".
- Review the log output:
Log files for this run are found in ${METPLUS_TUTORIAL_DIR}/output/GridStat/logs. The filename contains a timestamp of the current day.
- Review the Final Configuration File
The final configuration file is called metplus_final.conf. This contains all of the configuration variables used in the run. It is found in the top level of OUTPUT_BASE.
