TC-Pairs Tool: Configure
Start by making an output directory for TC-Pairs and changing directories:
cd ${METPLUS_TUTORIAL_DIR}/output/met_output/tc_pairs
Like the Point-Stat tool, the TC-Pairs tool is controlled by the contents of the configuration file passed to it on the command line. The default TC-Pairs configuration file may be found in the data/config/TCPairsConfig_default file.
The configurable items for TC-Pairs are used to specify which data are ingested and how the input data are filtered. The configurable items include specifications for the following:
- All model names to include in matched pairs
- Storms to include in verification: parsed by storm_id, basin, storm_name, cyclone
- Date/Time/Space restrictions: initialization time, valid time, lead time, masking
- User defined consensus forecasts
- Thresholds over watch/warning status of storm
The first step is to set-up the configuration file. Keep in mind, TC-Pairs should be run with the largest desired sample in mind to minimize re-running this tool! First, make a copy of the default:
Next, open up the TCPairsConfig_tutorial_run file for editing and modify it as follows:
basin = [ "AL" ];
To identify the models that we want to verify, as well as the basin. The three models identified are all U.S. operational models: HWRF, GFS (AVNO), and GFDL. Any field left blank will assume no restrictions.
{
name = "CONS";
members = [ "HWRF", "AVNO", "GFDL" ];
required = [ false, false, false ];
min_req = 2;
}
];
To compute a user defined consensus named "CONS". The membership of the consensus are the three listed models, none are required, but 2 must be present to calculate the consensus.
To only keep pairs that are the intersection of the model forecast and observation.
Next, save the TCPairsConfig_tutorial_run file and exit the text editor.
This run uses the default distance to land output file. Run ncview to see it:
Water points have distance to land values greater than 0 while land points have distances <= 0.
