Note
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Grid-Stat: CESM and GFS Analysis CONUS Temp
model_applications/climate/ GridStat_fcstCESM_obsGFS _ConusTemp.conf
Scientific Objective
To evaluate the CESM model temperature against the GFS analysis across the the Continental United States to obtain categorical output statistics. This was developed as part of the NCAR System for Integrated Modeling of the Atmosphere (SIMA) project.
Datasets
Forecast dataset: CESM Surface Temperature Data
Observation dataset: GFS Analysis 2m Temperature
METplus Components
This use case runs grid_stat to create continuous statistics on tempeprature from the CESM model and observations from the GFS analysis.
METplus Workflow
The grid_stat tool is run for each time. This example loops by initialization time. It processes 4 valid times, listed below.
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 with the -c option, i.e. -c parm/use_cases/model_applications/climate/GridStat_fcstCESM_obsGFS_ConusTemp.conf
[config]
# Documentation for this use case can be found at
# https://metplus.readthedocs.io/en/latest/generated/model_applications/climate/GridStat_fcstCESM_obsGFS_ConusTemp.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 = 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 = 2014080100
INIT_END = 2014080200
INIT_INCREMENT = 86400
LEAD_SEQ = 6, 12
###
# File I/O
# https://metplus.readthedocs.io/en/latest/Users_Guide/systemconfiguration.html#directory-and-filename-template-info
###
FCST_GRID_STAT_INPUT_DIR = {INPUT_BASE}/model_applications/climate/CESM
FCST_GRID_STAT_INPUT_TEMPLATE = MetPlus.globe.{init?fmt=%Y-%m-%d}-00000.cam.h0.{init?fmt=%Y-%m-%d}-10800.nc
OBS_GRID_STAT_INPUT_DIR = {INPUT_BASE}/model_applications/climate/gfs_analysis
OBS_GRID_STAT_INPUT_TEMPLATE = {valid?fmt=%Y%m%d}/gfsanl_4_{valid?fmt=%Y%m%d}_{valid?fmt=%H%M}_000.grb2
GRID_STAT_OUTPUT_DIR = {OUTPUT_BASE}/climate/CESM_GridStat
GRID_STAT_OUTPUT_TEMPLATE = {init?fmt=%Y%m%d%H}
###
# Field Info
# https://metplus.readthedocs.io/en/latest/Users_Guide/systemconfiguration.html#field-info
###
GRID_STAT_ONCE_PER_FIELD = False
FCST_VAR1_NAME = TS
FCST_VAR1_LEVELS = "({valid?fmt=%Y%m%d_%H%M%S},*,*)"
FCST_VAR1_THRESH = ge32.0, ge65.0, ge75.0
FCST_VAR1_OPTIONS = convert(x) = K_to_F(x);
OBS_VAR1_NAME = TMP
OBS_VAR1_LEVELS = Z2
OBS_VAR1_THRESH = ge32.0, ge65.0, ge75.0
OBS_VAR1_OPTIONS = convert(x) = K_to_F(x);
###
# GridStat Settings
# https://metplus.readthedocs.io/en/latest/Users_Guide/wrappers.html#gridstat
###
MODEL = CESM
OBTYPE = GFS_ANALYS
GRID_STAT_REGRID_TO_GRID = FCST
GRID_STAT_VERIFICATION_MASK = {FCST_GRID_STAT_INPUT_DIR}/conus_cesm_mask.nc
GRID_STAT_OUTPUT_PREFIX={MODEL}_{CURRENT_OBS_NAME}_vs_{OBTYPE}
GRID_STAT_OUTPUT_FLAG_CTC = STAT
GRID_STAT_OUTPUT_FLAG_CTS = STAT
GRID_STAT_OUTPUT_FLAG_CNT = STAT
GRID_STAT_OUTPUT_FLAG_SL1L2 = 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_INTERP_FIELD = NONE
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
Note
See the GridStat MET Configuration section of the User’s Guide for more information on the environment variables used in the file below:
////////////////////////////////////////////////////////////////////////////////
//
// 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 = [];
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}
}
obs = {
${METPLUS_OBS_FILE_TYPE}
${METPLUS_OBS_FIELD}
}
////////////////////////////////////////////////////////////////////////////////
//
// 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 = {
dx = [ 1 ];
dy = [ 1 ];
}
////////////////////////////////////////////////////////////////////////////////
//
// Distance Map statistics
// May be set separately in each "obs.field" entry
//
//distance_map = {
${METPLUS_DISTANCE_MAP_DICT}
////////////////////////////////////////////////////////////////////////////////
//
// 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}
////////////////////////////////////////////////////////////////////////////////
// Threshold for SEEPS p1 (Probability of being dry)
//seeps_p1_thresh =
${METPLUS_SEEPS_P1_THRESH}
////////////////////////////////////////////////////////////////////////////////
//grid_weight_flag =
${METPLUS_GRID_WEIGHT_FLAG}
tmp_dir = "${MET_TMP_DIR}";
// output_prefix =
${METPLUS_OUTPUT_PREFIX}
////////////////////////////////////////////////////////////////////////////////
${METPLUS_MET_CONFIG_OVERRIDES}
Running METplus
This use case can be run two ways:
Passing in GridStat_fcstCESM_obsGFS_ConusTemp.conf then a user-specific system configuration file:
run_metplus.py -c /path/to/METplus/parm/use_cases/model_applications/climate/GridStat_fcstCESM_obsGFS_ConusTemp.conf -c /path/to/user_system.conf
Modifying the configurations in parm/metplus_config, then passing in GridStat_fcstCESM_obsGFS_ConusTemp.conf:
run_metplus.py -c /path/to/METplus/parm/use_cases/model_applications/climate/GridStat_fcstCESM_obsGFS_ConusTemp.conf
The former method is recommended. Whether you add them to a user-specific configuration file or modify the metplus_config files, the following variables must be set correctly:
INPUT_BASE - Path to directory where sample data tarballs are unpacked (See Datasets section to obtain tarballs). This is not required to run METplus, but it is required to run the examples in parm/use_cases
OUTPUT_BASE - Path where METplus output will be written. This must be in a location where you have write permissions
MET_INSTALL_DIR - Path to location where MET is installed locally
Example User Configuration File:
[dir]
INPUT_BASE = /path/to/sample/input/data
OUTPUT_BASE = /path/to/output/dir
MET_INSTALL_DIR = /path/to/met-X.Y
NOTE: All of these items must be found under the [dir] section.
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/climate/CESM_GridStat/grid_stat (relative to OUTPUT_BASE) and will contain the following files:
grid_stat_CESM_TMP_vs_GFS_ANALYS_060000L_20140801_060000V.stat grid_stat_CESM_TMP_vs_GFS_ANALYS_120000L_20140801_120000V.stat grid_stat_CESM_TMP_vs_GFS_ANALYS_060000L_20140802_060000V.stat grid_stat_CESM_TMP_vs_GFS_ANALYS_120000L_20140802_120000V.stat
Keywords
Note
GridStatToolUseCase
ClimateAppUseCase
NetCDFFileUseCase
NCAROrgUseCase
Navigate to the METplus Quick Search for Use Cases page to discover other similar use cases.
sphinx_gallery_thumbnail_path = ‘_static/climate-GridStat_fcstCESM_obsGFS_ConusTemp.png’
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