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Weather Research and Forecasting (WRF) model is a common well-known atmospheric modeling system developed by NCAR. It is suitable for both meteorological research and operational weather prediction.

Official website: https://www2.mmm.ucar.edu/wrf/users/

Updated: May June 2023

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Table of Contents

Available version

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Modules

Module name

Description

Note

WRF/4.4.2-DMSM-cpeCray-23.03

Standard WRF model

Aggressive optimization

WRFchem/4.

4.2

5-

DMSM

DM-

cpeCray

cpeIntel-23.03

Aggressive

WRF model with chemistry,
including WRF-Chem tools

Standard optimization

WPS

Version

Module name

Optimization

/4.4-DM-cpeCray-23.03

WRF pre-processing system

for WRF 4.4.X

WPS/4.

4

5-DM-

cpeCray

cpeIntel-23.03

Aggressive optimization

WRF pre-processing system

for WRF 4.5.X

1. Input file

1.1 To run the WRF model, time-dependent meteorological data (global model output/background state) is required. It can be downloaded from, for example, WRF - Free Data and NCEP GFS / GDAS.

1.2 To configure the domain and simulation time, the namelist.wps is needed. A brief description of it can be found here. It is recommended to use the WRF Domain Wizard or the GIS4WRF plug-in for QGIS to define WRF domains.

Info

Users can utilize static geographical data open source datasets, such as geog, Global_emissions_v3 and EDGAR, already available on LANTA by specifying
, for example, geo_data_path = '/project/common/WPS_Static/geog'

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Info

Additional information about ThaiSC custom support commands for the WPS and WRF modules can be accessed by using commands such as link_wps --help, man link_emreal or module help WRF.

Note

Some options do not support hybrid run . To determine if (such as running WRF-Chem). If this is the case, do the following:

  • use #SBATCH --cpus-per-task=1 and export OMP_NUM_THREADS=1,

  • increase the total number of tasks, for example, #SBATCH --ntasks=64

  • specify the number of tasks for each executable explicitly; for instance, use
    srun -n16 ./real.exe
    srun -n64 -c1 ./wrf.exe

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To submit jobs to the SLURM queuing system on LANTA, execute

Code Block
languagebash
sbatch submitWRF.sh

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Info

If WPS and WRF jobs need be submitted separately, users could use the --dependency option of sbatch command to ensure that WRF starts running only after WPS is completed.

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Two complete examples are available at /project/common/WRF/Example1. To run it within a directory, use cp /project/common/WRF/Example1/* ., edit the account details by using vi submitWRF.sh and then issue the command sbatch submitWRF.sh or cp /project/common/WRF/Example2/* . and follow the instructions in the README file.
4. Post-processing
Several tools for processing NetCDF files are available in Conda environments such as netcdf-py39. To use NCL, for instance, add
 Code Block
languagebash
module load Miniconda3/22.11.1-1
conda activate netcdf-py39

# For NCL only
export NCARG_ROOT=${CONDA_PREFIX}
export NCARG_RANGS=/project/common/WPS_Static/rangs
export NCARG_SHAPEFILE=/project/common/WPS_Static/shapefile  # (If used)

# Commands such as 'srun -n1 ncl xxx' or 'srun -n1 python xxx' for serial run
Other main packages installed in netcdf-py39 are NCO, CDO, netcdf4-python, wrf-python, pyngl, pynio and cartopy.
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Contact Us
ThaiSC support service : thaisc-support@nstda.or.th