Note
Click here to download the full example code
PCPCombine: SUM Use Case
met_tool_wrapper/PCPCombine/PCPCombine_sum.conf
Scientific Objective
Build a 15 minute precipitation accumulation field from 5 minute accumulation fields.
Datasets
METplus Components
This use case utilizes the METplus PCPCombine wrapper to build a command that will look for valid data to build an accumulation.
METplus Workflow
PCPCombine is the only tool called in this example. It processes the following 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 with the -c option, i.e. -c parm/use_cases/met_tool_wrapper/PCPCombine/PCPCombine_sum.conf
[config]
PROCESS_LIST = PCPCombine
LOOP_BY = VALID
VALID_TIME_FMT = %Y%m%d%H%M
VALID_BEG = 201908021815
VALID_END = 201908021815
VALID_INCREMENT = 1M
LEAD_SEQ = 15M
LOOP_ORDER = times
FCST_PCP_COMBINE_RUN = True
FCST_PCP_COMBINE_METHOD = SUM
FCST_PCP_COMBINE_INPUT_DIR = {INPUT_BASE}/met_test/new
FCST_PCP_COMBINE_INPUT_TEMPLATE = NEWSe_{init?fmt=%Y%m%d}_i{init?fmt=%H%M}_m0_f*
FCST_PCP_COMBINE_OUTPUT_DIR = {OUTPUT_BASE}/met_tool_wrapper/PCPCombine/PCPCombine_sum
FCST_PCP_COMBINE_OUTPUT_TEMPLATE = NEWSe5min_mem00_lag00.nc
#LOG_PCP_COMBINE_VERBOSITY = 2
FCST_IS_PROB = false
FCST_PCP_COMBINE_INPUT_DATATYPE = GRIB
FCST_PCP_COMBINE_INPUT_ACCUMS = 5M
FCST_PCP_COMBINE_INPUT_NAMES = A000500
FCST_PCP_COMBINE_INPUT_LEVELS = Surface
FCST_PCP_COMBINE_OUTPUT_ACCUM = 15M
FCST_PCP_COMBINE_OUTPUT_NAME = A001500
MET Configuration
None. PCPCombine does not use configuration files.
Running METplus
This use case can be run two ways:
Passing in PCPCombine_sum.conf then a user-specific system configuration file:
run_metplus.py -c /path/to/METplus/parm/use_cases/met_tool_wrapper/PCPCombine/PCPCombine_sum.conf -c /path/to/user_system.conf
Modifying the configurations in parm/metplus_config, then passing in PCPCombine_sum.conf:
run_metplus.py -c /path/to/METplus/parm/use_cases/met_tool_wrapper/PCPCombine/PCPCombine_sum.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 met_tool_wrapper/PCPCombine/PCPCombine_sum (relative to OUTPUT_BASE) and will contain the following files:
NEWSe5min_mem00_lag00.nc
Keywords
Note
PCPCombineToolUseCase
Navigate to the METplus Quick Search for Use Cases page to discover other similar use cases.
sphinx_gallery_thumbnail_path = ‘_static/met_tool_wrapper-PCPCombine.png’
Total running time of the script: ( 0 minutes 0.000 seconds)