WRFand WRF-CHEM

Weather Research and Forecasting Model

WRF and WRF-CHEM have been installed on Abel. To check which version is available:

module avail wrf

-------------------------------------------------------------------------------------- /cluster/etc/modulefiles ---------------------------------------------------------------------------------------
wrf/3.6.1

To set-up your environment:

module load wrf/3.6.1

When loading wrf, the following environment variables are defined:

• WRF_HOME: directory where WRF has been installed; this can be used to check WRF sources
• WPS_HOME: directory where WPS has been installed. It is unlikely you have to check or change WPS source code but you will find in this directory all the metadata required to run WPS (the GEOGRID.TBL, METGRID.TBL, and Vtable files).
• WPS_GEOG_PATH: contains theterrestrial static input data. Even if you use your own compiled version of WRF/WPS, it is NOT necessary to download these files again.
• WRFIO_NCD_LARGE_FILE_SUPPORT: it is set to 1 to allow you to store large netCDF files (more than 2GB).
• WRF_EXAMPLES: directory where all WRF and WRF-CHEM examples are stored. If you wish to run one of this example see our dedicated section on running tutorials.

 

WRF has been compiled with intel compilers and MPI:

module list 

Currently Loaded Modulefiles:
  1) use.own                 3) openmpi.intel/1.6.1     5) netcdf.intel/4.2.1.1    7) jasper/1.900.1          9) openmpi.intel/1.8      11) wrf/3.6.1
  2) intel/2011.10           4) hdf5/1.8.9_intel        6) intel-libs/2013.sp1.3   8) intel/2013.sp1.3       10) ncl/6.2.0

We suggest you specify the version you wish to use to avoid any problems if we install a new default version (as it is important to stick to the very same version for your  simulations).

WRF examples:

All WRF examples can be found in $WRF_EXAMPLES

A subdirectory can be found for each example and it contains all you need to run the corresponding examples (namelist.wps, namelist.input, Vtable, workflow.bash, and all the DATA required to run the simulation). You may found one or more files named workflow*.bash. These files are describing the sequence of programs to run for each example and can be divided in two groups:

1. WRF Preprocessing System (WPS)
2. WRF System

• define_grid.py uses namelist.wps to plot your defined grid
• run_geogrid.py  runs geogrid.exe to create static data for your domain
• run_ungrib.py runs ungrib.exe to unpack your input GRIB data
• run_metgrid.py runs metgrid.exe to interpolate input data onto your model domain