Note
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MTD: 6hr QPF Use Case
model_applications/precipitation/MTD_fcstHRRR-TLE_obsMRMS.conf
Scientific Objective
This use case demonstrates the evaluation of an ensemble mean field from a prototype ensemble post-processing technique for time-lagged ensembles (HRRR-TLE). MTD is used to provide useful object attributes and diagnostics on aggregated over a time series. This non-traditional approach provides alternative information and diagnostics to inform model development.
Version Added
METplus version 3.0
Datasets
Forecast: NOAA High Resolution Rapid Refresh Time-Lagged Ensemble (HRRR-TLE) forecasts in GRIB2
Observation: Multi Radar Multi Sensor (MRMS)
Climatology: None
Location: All of the input data required for this use case can be found in a sample data tarball. Each use case category will have one or more sample data tarballs. It is only necessary to download the tarball with the use case’s dataset and not the entire collection of sample data. Click here to access the METplus releases page and download sample data for the appropriate release: https://github.com/dtcenter/METplus/releases This tarball should be unpacked into the directory that you will set the value of INPUT_BASE. See Running METplus section for more information.
METplus Components
This use case runs MTD (MODE Time Domain) over multiple forecast leads and compares them to the observational data set.
METplus Workflow
Beginning time (INIT_BEG): 2017051003
End time (INIT_END): 2017051003
Increment between beginning and end times (INIT_INCREMENT): 43200
Sequence of forecast leads to process (LEAD_SEQ): 1,2,3
The following tools are used for each run time:
MTD
This example loops by valid time. For each valid time it will run once, processing forecast leads 1, 2, and 3. There is only one valid time in this example, so the following will be run:
Run times:
METplus Configuration
METplus first loads all of the configuration files found in parm/metplus_config, then it loads any configuration files passed to METplus via the command line, i.e. parm/use_cases/model_applications/precipitation/MTD_fcstHRRR-TLE_obsMRMS.conf
[config]
# Documentation for this use case can be found at
# https://metplus.readthedocs.io/en/latest/generated/model_applications/precipitation/MTD_fcstHRRR-TLE_obsMRMS.html
# For additional information, please see the METplus Users Guide.
# https://metplus.readthedocs.io/en/latest/Users_Guide
###
# Processes to run
# https://metplus.readthedocs.io/en/latest/Users_Guide/systemconfiguration.html#process-list
###
PROCESS_LIST = MTD
###
# Time Info
# LOOP_BY options are INIT, VALID, RETRO, and REALTIME
# If set to INIT or RETRO:
# INIT_TIME_FMT, INIT_BEG, INIT_END, and INIT_INCREMENT must also be set
# If set to VALID or REALTIME:
# VALID_TIME_FMT, VALID_BEG, VALID_END, and VALID_INCREMENT must also be set
# LEAD_SEQ is the list of forecast leads to process
# https://metplus.readthedocs.io/en/latest/Users_Guide/systemconfiguration.html#timing-control
###
LOOP_BY = INIT
INIT_TIME_FMT = %Y%m%d%H
INIT_BEG=2017051003
INIT_END=2017051003
INIT_INCREMENT=43200
LEAD_SEQ = 1,2,3
###
# File I/O
# https://metplus.readthedocs.io/en/latest/Users_Guide/systemconfiguration.html#directory-and-filename-template-info
###
FCST_MTD_INPUT_DIR = {INPUT_BASE}/model_applications/precipitation/PHPT
FCST_MTD_INPUT_TEMPLATE= {init?fmt=%Y%m%d}/{init?fmt=%Y%m%d}_i{init?fmt=%H}_f{lead?fmt=%HHH}_HRRRTLE_PHPT.grb2
OBS_MTD_INPUT_DIR = {INPUT_BASE}/model_applications/precipitation/QPE_Data
OBS_MTD_INPUT_TEMPLATE = {valid?fmt=%Y%m%d}/qpe_{valid?fmt=%Y%m%d%H}.nc
MTD_OUTPUT_DIR = {OUTPUT_BASE}/model_applications/precipitation/MTD_fcstHRRR-TLE_obsMRMS
MTD_OUTPUT_TEMPLATE = {init?fmt=%Y%m%d%H%M}
###
# Field Info
# https://metplus.readthedocs.io/en/latest/Users_Guide/systemconfiguration.html#field-info
###
MODEL = PHPT
OBTYPE = QPE
FCST_IS_PROB = true
FCST_PROB_IN_GRIB_PDS = true
FCST_VAR1_NAME = APCP
FCST_VAR1_LEVELS = A01
FCST_VAR1_THRESH = gt12.7
OBS_VAR1_NAME = P01M_NONE
OBS_VAR1_LEVELS = "(0,*,*)"
OBS_VAR1_THRESH = gt12.7
###
# MTD Settings
# https://metplus.readthedocs.io/en/latest/Users_Guide/wrappers.html#mtd
###
FCST_MTD_CONV_RADIUS = 0
FCST_MTD_CONV_THRESH = >=10
OBS_MTD_CONV_RADIUS = 15
OBS_MTD_CONV_THRESH = >=12.7
MTD_REGRID_TO_GRID = OBS
MTD_OUTPUT_PREFIX = PROB_{MODEL}_{CURRENT_FCST_NAME}_vs_{OBTYPE}_{CURRENT_OBS_NAME}_A{CURRENT_FCST_LEVEL}
MET Configuration
METplus sets environment variables based on user settings in the METplus configuration file. See How METplus controls MET config file settings for more details.
YOU SHOULD NOT SET ANY OF THESE ENVIRONMENT VARIABLES YOURSELF! THEY WILL BE OVERWRITTEN BY METPLUS WHEN IT CALLS THE MET TOOLS!
If there is a setting in the MET configuration file that is currently not supported by METplus you’d like to control, please refer to: Overriding Unsupported MET config file settings
MTDConfig_wrapped
////////////////////////////////////////////////////////////////////////////////
//
// MODE Time Domain configuration file.
//
// For additional information, see the MET_BASE/config/README file.
//
////////////////////////////////////////////////////////////////////////////////
//
// Output model name to be written
//
//model =
${METPLUS_MODEL}
//
// Output description to be written
//
//desc =
${METPLUS_DESC}
//
// Output observation type to be written
//
//obtype =
${METPLUS_OBTYPE}
////////////////////////////////////////////////////////////////////////////////
//
// Verification grid
// May be set separately in each "field" entry
//
//regrid = {
${METPLUS_REGRID_DICT}
////////////////////////////////////////////////////////////////////////////////
//
// Approximate grid resolution (km)
//
grid_res = 4;
////////////////////////////////////////////////////////////////////////////////
//
// Forecast and observation fields to be verified
//
fcst = {
${METPLUS_FCST_FILE_TYPE}
//field = {
${METPLUS_FCST_FIELD}
censor_thresh = [];
censor_val = [];
conv_time_window = { beg = -1; end = 1; };
//conv_radius =
${METPLUS_FCST_CONV_RADIUS}
//conv_thresh =
${METPLUS_FCST_CONV_THRESH}
}
obs = {
${METPLUS_OBS_FILE_TYPE}
//field = {
${METPLUS_OBS_FIELD}
censor_thresh = [];
censor_val = [];
conv_time_window = { beg = -1; end = 1; };
//conv_radius =
${METPLUS_OBS_CONV_RADIUS}
//conv_thresh =
${METPLUS_OBS_CONV_THRESH}
}
////////////////////////////////////////////////////////////////////////////////
//
// Intensity percentile value to be written
//
inten_perc_value = 99;
////////////////////////////////////////////////////////////////////////////////
//
// Throw away 3D objects with volumes smaller than this
//
//min_volume =
${METPLUS_MIN_VOLUME}
////////////////////////////////////////////////////////////////////////////////
//
// Fuzzy engine weights
//
weight = {
space_centroid_dist = 1.0;
time_centroid_delta = 1.0;
speed_delta = 1.0;
direction_diff = 1.0;
volume_ratio = 1.0;
axis_angle_diff = 1.0;
start_time_delta = 1.0;
end_time_delta = 1.0;
}
////////////////////////////////////////////////////////////////////////////////
//
// Fuzzy engine interest functions
//
interest_function = {
space_centroid_dist = (
( 0.0, 1.0 )
( 50.0, 0.5 )
( 100.0, 0.0 )
);
time_centroid_delta = (
( -3.0, 0.0 )
( -2.0, 0.5 )
( -1.0, 0.8 )
( 0.0, 1.0 )
( 1.0, 0.8 )
( 2.0, 0.5 )
( 3.0, 0.0 )
);
speed_delta = (
( -10.0, 0.0 )
( -5.0, 0.5 )
( 0.0, 1.0 )
( 5.0, 0.5 )
( 10.0, 0.0 )
);
direction_diff = (
( 0.0, 1.0 )
( 90.0, 0.0 )
( 180.0, 0.0 )
);
volume_ratio = (
( 0.0, 0.0 )
( 0.5, 0.5 )
( 1.0, 1.0 )
( 1.5, 0.5 )
( 2.0, 0.0 )
);
axis_angle_diff = (
( 0.0, 1.0 )
( 30.0, 1.0 )
( 90.0, 0.0 )
);
start_time_delta = (
( -5.0, 0.0 )
( -3.0, 0.5 )
( 0.0, 1.0 )
( 3.0, 0.5 )
( 5.0, 0.0 )
);
end_time_delta = (
( -5.0, 0.0 )
( -3.0, 0.5 )
( 0.0, 1.0 )
( 3.0, 0.5 )
( 5.0, 0.0 )
);
} // interest functions
////////////////////////////////////////////////////////////////////////////////
//
// Total interest threshold for determining matches
//
total_interest_thresh = 0.7;
////////////////////////////////////////////////////////////////////////////////
//
// Output flags
//
nc_output = {
latlon = true;
raw = true;
object_id = true;
cluster_id = true;
}
txt_output = {
attributes_2d = true;
attributes_3d = true;
}
////////////////////////////////////////////////////////////////////////////////
//output_prefix =
${METPLUS_OUTPUT_PREFIX}
//version = "V9.0";
tmp_dir = "${MET_TMP_DIR}";
////////////////////////////////////////////////////////////////////////////////
${METPLUS_MET_CONFIG_OVERRIDES}
Python Embedding
This use case does not use Python embedding.
User Scripting
User Scripting is not used in this use case.
Running METplus
Pass the use case configuration file to the run_metplus.py script along with any user-specific system configuration files if desired:
run_metplus.py /path/to/METplus/parm/use_cases/model_applications/precipitation/MTD_fcstHRRR-TLE_obsMRMS.conf /path/to/user_system.conf
See Running METplus for more information.
Expected Output
A successful run will output the following both to the screen and to the logfile:
INFO: METplus has successfully finished running.
Refer to the value set for OUTPUT_BASE to find where the output data was generated. Output for this use case will be found in model_applications/precipitation/MTD_fcstHRRR-TLE_obsMRMS (relative to OUTPUT_BASE) and will contain the following files:
mtd_20170510_040000V_2d.txt
mtd_20170510_040000V_3d_single_simple.txt
mtd_20170510_040000V_obj.nc
Keywords
Note
MTDToolUseCase
PrecipitationAppUseCase
GRIB2FileUseCase
NetCDFFileUseCase
NOAAWPCOrgUseCase
NOAAHMTOrgUseCase
NOAAHWTOrgUseCase
ConvectionAllowingModelsAppUseCase
ProbabilityVerificationUseCase
DiagnosticsUseCase
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