METplus Use Case: Feature Relative (Series-Analysis by lead, by forecast hour grouping)
Setup
In this exercise, you will perform a series analysis based on the lead time (forecast hour) of your sample data and organize your results by forecast hour groupings. This use case utilizes the MET Tc-Pairs, Tc-Stat, and Series-Analysis tools, and the METplus wrappers: TcPairs, ExtractTiles, TcStat, and SeriesAnalysis. Please refer to the MET User's Guide for a description of the MET tools and the METplus Users Guide for more details about the wrappers. Please note that the METplus User's Guide is a work-in-progress and may have missing content.
Change to the METplus Tutorial Directory:
Review Use Case Configuration File: series_by_lead_by_fhr_grouping.conf
View the file and study the configuration variables that are defined.
Note that the Lead time groupings are specified by the LEAD_SEQ config options.
LEAD_SEQ_1 = begin_end_incr(0,18,6)
LEAD_SEQ_1_LABEL = Day1
# forecast lead sequence 2 list (24, 30, 36, 42)
LEAD_SEQ_2 = begin_end_incr(24,42,6)
LEAD_SEQ_2_LABEL = Day2
This references OUTPUT_BASE which you set in the METplus default configuration file (metplus_config/defaults.conf). METplus config variables can reference other config variables, even if they are defined in a config file that is read afterwards.
Run METplus
Run the following command:
${METPLUS_TUTORIAL_DIR}/tutorial.conf \
${METPLUS_BUILD_BASE}/parm/use_cases/model_applications/medium_range/TCStat_SeriesAnalysis_fcstGFS_obsGFS_FeatureRelative_SeriesByLead.conf \
dir.OUTPUT_BASE=${METPLUS_TUTORIAL_DIR}/output/feature_relative_by_lead_fhr_groupings
You will see output streaming to your screen. This may take up to 3 minutes to complete. When it is complete, your prompt returns.
Review the Output Files
You should have output directories including the following that result from running the wrappers TcPairs, ExtractTiles, and TcStat, respectively:
extract_tiles
tc_pairs
and the output directory of interest, from the SeriesByLead wrapper:
That directory contains the following directories:
Day2
series_animate
Day1 contain the following files:
series_analysis_files_obs_init_ALL_valid_ALL_lead_ALL.txt
series_F000_to_F018_TMP_Z2_FBAR.png
series_F000_to_F018_TMP_Z2_FBAR.ps
series_F000_to_F018_TMP_Z2_ME.png
series_F000_to_F018_TMP_Z2_ME.ps
series_F000_to_F018_TMP_Z2.nc
series_F000_to_F018_TMP_Z2_OBAR.png
series_F000_to_F018_TMP_Z2_OBAR.ps
series_F000_to_F018_TMP_Z2_TOTAL.png
series_F000_to_F018_TMP_Z2_TOTAL.ps
The series_analysis_files_obs_init_ALL_valid_ALL_lead_ALL.txt is a text file that contains a list of the data that is included in the series analysis.
Day2 contains equivalent files for forecast leads 24 to 42.
The .nc files are the series analysis output generated from the MET Series-Analysis tool.
The .png and .ps files are graphics files that can be viewed using display:
or
Note: the & is used to run this command in the background
The series_animate directory contains the gif images of the animations:
series_animate_TMP_Z2_ME.gif
series_animate_TMP_Z2_OBAR.gif
series_animate_TMP_Z2_TOTAL.gif
To watch the animations, go to ${METPLUS_TUTORIAL_DIR}/output/feature_relative_by_lead_fhr_groupings/series_analysis_lead/series_animate, enter the following (if firefox doesn't work you can use animate instead):
Review the Log File
A log file is generated in your logging directory: ${METPLUS_TUTORIAL_DIR}/output/feature_relative_by_lead_fhr_groupings/logs. The filename contains the timestamp corresponding to the current day. To view the log file:
Review the Final Configuration File
The final configuration file is metplus_final.confYYYYMMDDHHMMSS. (where YYYYMMDDHHMMSS refers to year, month, day, hour, minute, second that the file was created.)This contains all of the configuration variables used in the run.
