{ "cells": [ { "cell_type": "code", "execution_count": null, "metadata": { "collapsed": false }, "outputs": [], "source": [ "%matplotlib inline" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "\n# EnsembleStat: Basic Use Case\n\nmet_tool_wrapper/EnsembleStat/EnsembleStat.conf\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Scientific Objective\n\nTo provide useful statistical information on the relationship between\nobservation data (in both grid and point formats) to an ensemble forecast.\nThese values can be used to help correct ensemble member deviations from observed values.\n\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Datasets\n\n\n| **Forecast:** WRF ARW 24 hour precipitation accumulation\n| ...met_test/data/sample_fcst/2009123112/\n| arw-fer-gep1/d01_2009123112_02400.grib\n| arw-fer-gep5/d01_2009123112_02400.grib\n| arw-sch-gep2/d01_2009123112_02400.grib\n| arw-sch-gep6/d01_2009123112_02400.grib\n| arw-tom-gep3/d01_2009123112_02400.grib\n| arw-tom-gep7/d01_2009123112_02400.grib\n| **Gridded Observation:** ST4 24 hour precipitation accumulation\n| met_test/data/sample_obs/ST4/sample_obs/ST4/ST4.2010010112.24h\n| **Point Observation:** \n| met_test/out/ascii2nc/precip24_2010010112.nc \n\n| **Location:** All of the input data required for this use case can be found in the met_test sample data tarball. Click here to the METplus releases page and download sample data for the appropriate release: https://github.com/dtcenter/METplus/releases\n| The tarball should be unpacked into the directory that you will set the value of INPUT_BASE. See `Running METplus`_ section for more information.\n| **Data Source:** Unknown\n|\n\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## METplus Components\n\nThis use case utilizes the METplus EnsembleStat wrapper to search for\nfiles that are valid at a given run time and generate a command to run\nthe MET tool EnsembleStat if all required files are found.\n\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## METplus Workflow\n\nEnsembleStat is the only tool called in this example. It processes the following\nrun times:\n\n| **Init:** 2009-12-31_12Z\n| **Forecast lead:** 24 hour\n|\n\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## METplus Configuration\n\nMETplus first loads all of the configuration files found in parm/metplus_config,\nthen it loads any configuration files passed to METplus via the command line\nwith the -c option, i.e. -c parm/use_cases/met_tool_wrapper/EnsembleStat/EnsembleStat.conf\n\n.. highlight:: bash\n.. literalinclude:: ../../../../parm/use_cases/met_tool_wrapper/EnsembleStat/EnsembleStat.conf\n\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## MET Configuration\n\nMETplus sets environment variables based on user settings in the METplus configuration file. \nSee `How METplus controls MET config file settings` for more details. \n\n**YOU SHOULD NOT SET ANY OF THESE ENVIRONMENT VARIABLES YOURSELF! THEY WILL BE OVERWRITTEN BY METPLUS WHEN IT CALLS THE MET TOOLS!**\n\nIf there is a setting in the MET configuration file that is currently not supported by METplus you'd like to control, please refer to:\n`Overriding Unsupported MET config file settings`\n\n

Note

See the `EnsembleStat MET Configuration` section of the User's Guide for more information on the environment variables used in the file below:

\n\n.. highlight:: bash\n.. literalinclude:: ../../../../parm/met_config/EnsembleStatConfig_wrapped\n\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Running METplus\n\nIt is recommended to run this use case by:\n\nPassing in EnsembleStat.conf then a user-specific system configuration file::\n\n run_metplus.py /path/to/METplus/parm/use_cases/met_tool_wrapper/EnsembleStat/EnsembleStat.conf /path/to/user_system.conf\n\nThe following METplus configuration variables must be set correctly to run this example.:\n\n* **INPUT_BASE** - Path to directory where sample data tarballs are unpacked (See Datasets section to obtain tarballs).\n* **OUTPUT_BASE** - Path where METplus output will be written. This must be in a location where you have write permissions\n* **MET_INSTALL_DIR** - Path to location where MET is installed locally\n\nExample User Configuration File::\n\n [dir]\n INPUT_BASE = /path/to/sample/input/data\n OUTPUT_BASE = /path/to/output/dir\n MET_INSTALL_DIR = /path/to/met-X.Y \n\n**NOTE:** All of these items must be found under the [dir] section.\n\n\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Expected Output\n\nA successful run will output the following both to the screen and to the logfile::\n\n INFO: METplus has successfully finished running.\n\nRefer to the value set for **OUTPUT_BASE** to find where the output data was generated.\nOutput for this use case will be found in ensemble/200912311200/ensemble_stat (relative to **OUTPUT_BASE**)\nand will contain the following files:\n\n* ensemble_stat_20100101_120000V.stat\n* ensemble_stat_20100101_120000V_ecnt.txt\n* ensemble_stat_20100101_120000V_rhist.txt\n* ensemble_stat_20100101_120000V_phist.txt\n* ensemble_stat_20100101_120000V_orank.txt\n* ensemble_stat_20100101_120000V_ssvar.txt\n* ensemble_stat_20100101_120000V_relp.txt\n* ensemble_stat_20100101_120000V_ens.nc\n* ensemble_stat_20100101_120000V_orank.nc\n\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Keywords\n\n

Note

* EnsembleStatToolUseCase\n * PythonEmbeddingFileUseCase\n * EnsembleAppUseCase\n * ProbabilityGenerationAppUseCase\n * GRIBFileUseCase\n\n Navigate to `quick-search` to discover other similar use cases.

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