.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "generated/model_applications/s2s_mjo/UserScript_fcstGFS_obsERA_OMI.py" .. LINE NUMBERS ARE GIVEN BELOW. .. only:: html .. note:: :class: sphx-glr-download-link-note :ref:`Go to the end ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_generated_model_applications_s2s_mjo_UserScript_fcstGFS_obsERA_OMI.py: UserScript: Make OMI plot from calculated MJO indices ===================================================== model_applications/ s2s_mjo/ UserScript_fcstGFS_obsERA_OMI.py .. GENERATED FROM PYTHON SOURCE LINES 12-17 Scientific Objective -------------------- To use Outgoing Longwave Radiation (OLR) to compute the OLR based MJO Index (OMI). Specifically, OMI is computed using OLR data between 20N and 20S. The OLR data are then projected onto Empirical Orthogonal Function (EOF) data that is computed for each day of the year, latitude, and longitude. The OLR is then filtered for 20 - 96 days, and regressed onto the daily EOFs. Finally, it's normalized and these normalized components are plotted on a phase diagram. Separate phase diagrams are created for the model and observations. .. GENERATED FROM PYTHON SOURCE LINES 19-24 Datasets -------- * Forecast dataset: GFS Model Outgoing Longwave Radiation * Observation dataset: ERA Reanlaysis Outgoing Longwave Radiation. .. GENERATED FROM PYTHON SOURCE LINES 26-46 External Dependencies --------------------- You will need to use a version of Python 3.6+ that has the following packages installed:: * numpy * netCDF4 * datetime * xarray * matplotlib * scipy * pandas If the version of Python used to compile MET did not have these libraries at the time of compilation, you will need to add these packages or create a new Python environment with these packages. If this is the case, you will need to set the MET_PYTHON_EXE environment variable to the path of the version of Python you want to use. If you want this version of Python to only apply to this use case, set it in the [user_env_vars] section of a METplus configuration file.: [user_env_vars] MET_PYTHON_EXE = /path/to/python/with/required/packages/bin/python .. GENERATED FROM PYTHON SOURCE LINES 48-53 METplus Components ------------------ This use case runs the OMI driver which computes OMI and creates a phase diagram. Inputs to the OMI driver include netCDF files that are in MET's netCDF version. In addition, a txt file containing the listing of these input netCDF files is required, as well as text file listings of the EOF1 and EOF2 files. These text files can be generated using the USER_SCRIPT_INPUT_TEMPLATES in the [create_eof_filelist] and [script_omi] sections. Some optional pre-processing steps include using regrid_data_plane to either regrid your data or cut the domain to 20N - 20S. .. GENERATED FROM PYTHON SOURCE LINES 55-59 METplus Workflow ---------------- The OMI driver script python code is run for each lead time on the forecast and observations data. This example loops by valid time for the model pre-processing, and valid time for the other steps. This version is set to only process the OMI calculation and creating a text file listing of the EOF files, omitting the creation of daily means for the model and the regridding pre-processing steps. However, the configurations for pre-processing are available for user reference. .. GENERATED FROM PYTHON SOURCE LINES 61-72 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/s2s_mjo/UserScript_fcstGFS_obsERA_OMI.conf. The file UserScript_fcstGFS_obsERA_OMI/OMI_driver.py runs the python program and UserScript_fcstGFS_obsERA_OMI.conf sets the variables for all steps of the OMI use case. .. highlight:: bash .. literalinclude:: ../../../../parm/use_cases/model_applications/s2s_mjo/UserScript_fcstGFS_obsERA_OMI.conf .. GENERATED FROM PYTHON SOURCE LINES 74-81 MET Configuration --------------------- METplus sets environment variables based on the values in the METplus configuration file. These variables are referenced in the MET configuration file. **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 not controlled by an environment variable, you can add additional environment variables to be set only within the METplus environment using the [user_env_vars] section of the METplus configuration files. See the 'User Defined Config' section on the 'System Configuration' page of the METplus User's Guide for more information. .. GENERATED FROM PYTHON SOURCE LINES 83-93 Python Scripts ---------------- The OMI driver script orchestrates the calculation of the MJO indices and the generation of a phase diagram OMI plot: parm/use_cases/model_applications/s2s_mjo/UserScript_fcstGFS_obsERA_OMI/OMI_driver.py: .. highlight:: python .. literalinclude:: ../../../../parm/use_cases/model_applications/s2s_mjo/UserScript_fcstGFS_obsERA_OMI/OMI_driver.py .. GENERATED FROM PYTHON SOURCE LINES 95-121 Running METplus --------------- This use case is run in the following ways: 1) Passing in UserScript_fcstGFS_obsERA_OMI.conf then a user-specific system configuration file:: run_metplus.py -c /path/to/METplus/parm/use_cases/model_applications/s2s_mjo/UserScript_fcstGFS_obsERA_OMI.conf -c /path/to/user_system.conf 2) Modifying the configurations in parm/metplus_config, then passing in UserScript_fcstGFS_obsERA_OMI.py:: run_metplus.py -c /path/to/METplus/parm/use_cases/model_applications/s2s_mjo/UserScript_fcstGFS_obsERA_OMI.conf 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 .. GENERATED FROM PYTHON SOURCE LINES 123-127 Expected Output --------------- 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/s2s_mjo/UserScript_fcstGFS_obsERA_OMI. This may include the regridded data and daily averaged files. In addition, the phase diagram plots will be generated and the output location can be specified as OMI_PLOT_OUTPUT_DIR. If it is not specified, plots will be sent to model_applications/s2s_mjo/UserScript_fcstGFS_obsERA_OMI/plots (relative to **OUTPUT_BASE**). .. GENERATED FROM PYTHON SOURCE LINES 129-145 Keywords -------- .. note:: * S2SAppUseCase * S2SMJOAppUseCase * RegridDataPlaneUseCase * PCPCombineUseCase * METcalcpyUseCase * METplotpyUseCase Navigate to :ref:`quick-search` to discover other similar use cases. sphinx_gallery_thumbnail_path = '_static/s2s_mjo-UserScript_fcstGFS_obsERA_OMI.png' .. rst-class:: sphx-glr-timing **Total running time of the script:** (0 minutes 0.000 seconds) .. _sphx_glr_download_generated_model_applications_s2s_mjo_UserScript_fcstGFS_obsERA_OMI.py: .. only:: html .. container:: sphx-glr-footer sphx-glr-footer-example .. container:: sphx-glr-download sphx-glr-download-python :download:`Download Python source code: UserScript_fcstGFS_obsERA_OMI.py ` .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: UserScript_fcstGFS_obsERA_OMI.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_