This section discusses:
Downloading the WRF model.
Downloading the WRF-GC coupler and the GEOS-Chem model.
Downloading the WPS (WRF Pre-Processor).
Currently, the GEOS-Chem model is included within the WRF-GC coupler. In the future, we plan to distribute these separately.
However, the GEOS-Chem model version within the WRF-GC coupler, located within the
gc folder, is unmodified. You can change this copy of GEOS-Chem just as you would change any other copy of GEOS-Chem, for your research.
Do not move the WRF-GC directory after compiling, even on the same machine. Do not share a compiled copy of WRF-GC with others because during the compile process, the file paths are fixed. Always install a fresh copy of WRF and download the WRF-GC into the chem directory when you move folders!
Choose a folder to store your WRF-GC model, then proceed with the steps below.
The currently supported version is WRF v188.8.131.52 (for WRF-GC v1.0 and v2.0).
If you would like to use WRF version 4, please contact the WRF-GC team for an experimental version.
For WRF-GC v1.0 and v2.0, use WRF version 184.108.40.206
wget https://github.com/NCAR/WRFV3/archive/refs/tags/V220.127.116.11.zip unzip V18.104.22.168.zip
Extract WRF into the
WRFV3 folder (version 3). For simplicity, we refer to the folder as
For WRF-GC v3.0, use WRF version 4.3 or 4.4
wget https://github.com/wrf-model/WRF/releases/download/v4.4/v4.4.zip unzip v4.4.zip
Extract WRF into the
WRFV4.X folder (version 4), and rename it to
Downloading the WRF-GC coupler and GEOS-Chem model
Go into the
WRFfolder and delete the existing WRF-Chem chemistry. Delete the
Clone the WRF-GC repository into the chem folder.
git clone https://github.com/jimmielin/wrf-gc-release.git chem
Make sure you have cloned this into the chem folder. The folder should look like this:
WRF/chem$ ls gc config chem_driver.F module_chem_utilities.F module_input_chem_data.F chemics_init.F module_convection_prep.F module_data_rrtmgaeropt.F wrfgc_convert_state_mod.F ...
Downloading the WPS Pre-Processor
Extract the WRF Pre-Processor.
If you are running simulations after July 2019, you have to use WPS version 4.0 or above. It works with WRF v3.9 as well. Refer to this post for details