Note
Go to the end to download the full example code.
Grid-Stat: 6hr QPF in NetCDF format
model_applications/precipitation/GridStat_fcstHREFmean_obsStgIV_Netcdf.conf
Scientific Objective
Evaluate the skill of a high resolution multi-model ensemble mean at predicting 6 hour precipitation accumulation using the NCEP Stage IV gauge corrected analysis.
Version Added
METplus version 3.0
Datasets
Forecast: NOAA High Resolution Ensemble Forecast (HREF) mean forecasts in NetCDF
Observation: Stage IV GRIB 6 hour precipitation accumulation
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 first runs PCPCombine on the forecast data to build a 6 hour precipitation accumulation from 1 hour files or a single 6 hour file. Then the observation data is regridded to the model grid using the RegridDataPlane. Finally, the observation files are compared to the forecast data using GridStat.
METplus Workflow
Beginning time (INIT_BEG): 2017050912
End time (INIT_END): 2017050912
Increment between beginning and end times (INIT_INCREMENT): 43200
Sequence of forecast leads to process (LEAD_SEQ): 18
The following tools are used for each run time: PCPCombine (observation) > RegridDataPlane (observation) > GridStat
This example loops by initialization time. There is only one initalization 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/GridStat_fcstHREFmean_obsStgIV_NetCDF.conf
[config]
# Documentation for this use case can be found at
# https://metplus.readthedocs.io/en/latest/generated/model_applications/precipitation/GridStat_fcstHREFmean_obsStgIV_NetCDF.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 = PCPCombine, RegridDataPlane, GridStat
###
# 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=2017050912
INIT_END=2017050912
INIT_INCREMENT=43200
LEAD_SEQ = 18
###
# File I/O
# https://metplus.readthedocs.io/en/latest/Users_Guide/systemconfiguration.html#directory-and-filename-template-info
###
FCST_PCP_COMBINE_RUN = True
FCST_PCP_COMBINE_INPUT_DIR = {INPUT_BASE}/model_applications/precipitation/HREFv2_Mean
FCST_PCP_COMBINE_INPUT_TEMPLATE = {init?fmt=%Y%m%d}/hrefmean_{init?fmt=%Y%m%d%H}f{lead?fmt=%HHH}.nc
FCST_PCP_COMBINE_OUTPUT_DIR = {OUTPUT_BASE}/model_applications/precipitation/GridStat_fcstHREFmean_obsStgIV_NetCDF/HREFv2_Mean/bucket
FCST_PCP_COMBINE_OUTPUT_TEMPLATE = {valid?fmt=%Y%m%d}/hrefmean_{valid?fmt=%Y%m%d%H}_A{level?fmt=%HH}.nc
OBS_REGRID_DATA_PLANE_RUN = True
OBS_REGRID_DATA_PLANE_INPUT_DIR = {INPUT_BASE}/model_applications/precipitation/StageIV
OBS_REGRID_DATA_PLANE_INPUT_TEMPLATE = {valid?fmt=%Y%m%d?shift=-12H}12_st4.nc
OBS_REGRID_DATA_PLANE_OUTPUT_DIR = {OUTPUT_BASE}/model_applications/precipitation/GridStat_fcstHREFmean_obsStgIV_NetCDF/StageIV_netcdf/regrid
OBS_REGRID_DATA_PLANE_OUTPUT_TEMPLATE = {valid?fmt=%Y%m%d%H}_st4_A06.nc
FCST_GRID_STAT_INPUT_DIR = {FCST_PCP_COMBINE_OUTPUT_DIR}
FCST_GRID_STAT_INPUT_TEMPLATE = {valid?fmt=%Y%m%d}/hrefmean_{valid?fmt=%Y%m%d%H}_A06.nc
OBS_GRID_STAT_INPUT_DIR = {OBS_REGRID_DATA_PLANE_OUTPUT_DIR}
OBS_GRID_STAT_INPUT_TEMPLATE = {OBS_REGRID_DATA_PLANE_OUTPUT_TEMPLATE}
GRID_STAT_OUTPUT_DIR = {OUTPUT_BASE}/model_applications/precipitation/GridStat_fcstHREFmean_obsStgIV_NetCDF/GridStat
GRID_STAT_OUTPUT_TEMPLATE = {init?fmt=%Y%m%d%H%M}
###
# Field Info
# https://metplus.readthedocs.io/en/latest/Users_Guide/systemconfiguration.html#field-info
###
MODEL = HREF_MEAN
OBTYPE = STAGE4
FCST_VAR1_NAME = {FCST_PCP_COMBINE_OUTPUT_NAME}
FCST_VAR1_LEVELS = "(*,*)"
FCST_VAR1_THRESH = gt12.7, gt25.4, gt50.8, gt76.2, gt152.4
OBS_VAR1_NAME = {OBS_REGRID_DATA_PLANE_VAR1_OUTPUT_FIELD_NAME}
OBS_VAR1_LEVELS = "(*,*)"
OBS_VAR1_THRESH = gt12.7, gt25.4, gt50.8, gt76.2, gt152.4
OBS_REGRID_DATA_PLANE_VAR1_INPUT_FIELD_NAME = P06M_NONE
OBS_REGRID_DATA_PLANE_VAR1_INPUT_LEVEL = "({valid?fmt=%Y%m%d_%H%M%S},*,*)"
OBS_REGRID_DATA_PLANE_VAR1_OUTPUT_FIELD_NAME = P06M_NONE
###
# PCPCombine Settings
# https://metplus.readthedocs.io/en/latest/Users_Guide/wrappers.html#pcpcombine
###
FCST_PCP_COMBINE_METHOD = ADD
FCST_PCP_COMBINE_INPUT_DATATYPE = NETCDF
FCST_PCP_COMBINE_CONSTANT_INIT = true
FCST_PCP_COMBINE_INPUT_ACCUMS = 1
FCST_PCP_COMBINE_INPUT_NAMES = P01M_NONE
FCST_PCP_COMBINE_INPUT_LEVELS = "(0,*,*)"
FCST_PCP_COMBINE_OUTPUT_ACCUM = 6
FCST_PCP_COMBINE_OUTPUT_NAME = APCP_06
OBS_PCP_COMBINE_INPUT_DATATYPE = NETCDF
###
# RegridDataPlane Settings
# https://metplus.readthedocs.io/en/latest/Users_Guide/wrappers.html#regriddataplane
###
REGRID_DATA_PLANE_METHOD = BUDGET
REGRID_DATA_PLANE_WIDTH = 2
REGRID_DATA_PLANE_VERIF_GRID={INPUT_BASE}/model_applications/precipitation/mask/CONUS_HRRRTLE.nc
###
# GridStat Settings
# https://metplus.readthedocs.io/en/latest/Users_Guide/wrappers.html#gridstat
###
GRID_STAT_REGRID_TO_GRID = OBS
GRID_STAT_NEIGHBORHOOD_WIDTH = 3, 7, 15
GRID_STAT_NEIGHBORHOOD_SHAPE = SQUARE
GRID_STAT_NEIGHBORHOOD_COV_THRESH = >=0.5
GRID_STAT_OUTPUT_FLAG_CTC = STAT
GRID_STAT_OUTPUT_FLAG_CTS = STAT
GRID_STAT_OUTPUT_FLAG_DMAP = STAT
GRID_STAT_NC_PAIRS_FLAG_LATLON = FALSE
GRID_STAT_NC_PAIRS_FLAG_RAW = FALSE
GRID_STAT_NC_PAIRS_FLAG_DIFF = FALSE
GRID_STAT_NC_PAIRS_FLAG_CLIMO = FALSE
GRID_STAT_NC_PAIRS_FLAG_APPLY_MASK = FALSE
GRID_STAT_NC_PAIRS_FLAG_DISTANCE_MAP = TRUE
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
GridStatConfig_wrapped
////////////////////////////////////////////////////////////////////////////////
//
// Grid-Stat 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
// May be set separately in each "obs.field" entry
//
// desc =
${METPLUS_DESC}
//
// Output observation type to be written
//
// obtype =
${METPLUS_OBTYPE}
////////////////////////////////////////////////////////////////////////////////
//
// Verification grid
//
// regrid = {
${METPLUS_REGRID_DICT}
////////////////////////////////////////////////////////////////////////////////
//censor_thresh =
${METPLUS_CENSOR_THRESH}
//censor_val =
${METPLUS_CENSOR_VAL}
//cat_thresh =
${METPLUS_CAT_THRESH}
cnt_thresh = [ NA ];
cnt_logic = UNION;
wind_thresh = [ NA ];
wind_logic = UNION;
eclv_points = 0.05;
//nc_pairs_var_name =
${METPLUS_NC_PAIRS_VAR_NAME}
nc_pairs_var_suffix = "";
//hss_ec_value =
${METPLUS_HSS_EC_VALUE}
rank_corr_flag = FALSE;
//
// Forecast and observation fields to be verified
//
fcst = {
${METPLUS_FCST_FILE_TYPE}
${METPLUS_FCST_FIELD}
${METPLUS_FCST_CLIMO_MEAN_DICT}
${METPLUS_FCST_CLIMO_STDEV_DICT}
}
obs = {
${METPLUS_OBS_FILE_TYPE}
${METPLUS_OBS_FIELD}
${METPLUS_OBS_CLIMO_MEAN_DICT}
${METPLUS_OBS_CLIMO_STDEV_DICT}
}
////////////////////////////////////////////////////////////////////////////////
//
// Climatology mean data
//
//climo_mean = {
${METPLUS_CLIMO_MEAN_DICT}
//climo_stdev = {
${METPLUS_CLIMO_STDEV_DICT}
//
// May be set separately in each "obs.field" entry
//
//climo_cdf = {
${METPLUS_CLIMO_CDF_DICT}
////////////////////////////////////////////////////////////////////////////////
//
// Verification masking regions
//
// mask = {
${METPLUS_MASK_DICT}
////////////////////////////////////////////////////////////////////////////////
//
// Confidence interval settings
//
ci_alpha = [ 0.05 ];
boot = {
interval = PCTILE;
rep_prop = 1.0;
n_rep = 0;
rng = "mt19937";
seed = "";
}
////////////////////////////////////////////////////////////////////////////////
//
// Data smoothing methods
//
//interp = {
${METPLUS_INTERP_DICT}
////////////////////////////////////////////////////////////////////////////////
//
// Neighborhood methods
//
nbrhd = {
field = BOTH;
// shape =
${METPLUS_NBRHD_SHAPE}
// width =
${METPLUS_NBRHD_WIDTH}
// cov_thresh =
${METPLUS_NBRHD_COV_THRESH}
vld_thresh = 1.0;
}
////////////////////////////////////////////////////////////////////////////////
//
// Fourier decomposition
// May be set separately in each "obs.field" entry
//
//fourier = {
${METPLUS_FOURIER_DICT}
////////////////////////////////////////////////////////////////////////////////
//
// Gradient statistics
// May be set separately in each "obs.field" entry
//
//gradient = {
${METPLUS_GRADIENT_DICT}
////////////////////////////////////////////////////////////////////////////////
//
// Distance Map statistics
// May be set separately in each "obs.field" entry
//
//distance_map = {
${METPLUS_DISTANCE_MAP_DICT}
////////////////////////////////////////////////////////////////////////////////
// Threshold for SEEPS p1 (Probability of being dry)
//seeps_p1_thresh =
${METPLUS_SEEPS_P1_THRESH}
////////////////////////////////////////////////////////////////////////////////
//
// Statistical output types
//
//output_flag = {
${METPLUS_OUTPUT_FLAG_DICT}
//
// NetCDF matched pairs output file
// May be set separately in each "obs.field" entry
//
// nc_pairs_flag = {
${METPLUS_NC_PAIRS_FLAG_DICT}
////////////////////////////////////////////////////////////////////////////////
//ugrid_dataset =
${METPLUS_UGRID_DATASET}
//ugrid_max_distance_km =
${METPLUS_UGRID_MAX_DISTANCE_KM}
//ugrid_coordinates_file =
${METPLUS_UGRID_COORDINATES_FILE}
////////////////////////////////////////////////////////////////////////////////
//grid_weight_flag =
${METPLUS_GRID_WEIGHT_FLAG}
tmp_dir = "${MET_TMP_DIR}";
// output_prefix =
${METPLUS_OUTPUT_PREFIX}
////////////////////////////////////////////////////////////////////////////////
${METPLUS_TIME_OFFSET_WARNING}
${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/GridStat_fcstHREFmean_obsStgIV_NetCDF.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/GridStat_fcstHREFmean_obsStgIV_NetCDF/GridStat/201705091200 (relative to OUTPUT_BASE) and will contain the following files:
grid_stat_000000L_20170510_060000V_pairs.nc
grid_stat_000000L_20170510_060000V.stat
Keywords
Note
GridStatToolUseCase
PrecipitationAppUseCase
PCPCombineToolUseCase
RegridDataPlaneToolUseCase
NetCDFFileUseCase
NOAAWPCOrgUseCase
NOAAHMTOrgUseCase
NOAAHWTOrgUseCase
ConvectionAllowingModelsAppUseCase
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