# Changes between Version 11 and Version 12 of WRF4G2.0/Geogrid

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Timestamp:
Oct 7, 2015 12:46:04 PM (6 years ago)
Comment:

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 v11 First of all, WPS binaries are needed. If you don't have them in your system, you will need to build them from source. Instructions for doing this are available too in the [http://www.mmm.ucar.edu/wrf/OnLineTutorial/Compile/index.html WRF-ARW online tutorial]. Once you have the binaries, you will need to prepare a namelist.wps file defining your requirements for the domain (e.g. size, location, resolution, etc.). Variables that usually need modification and we will show an example for 2-nesting domain: For instance, variables needed for 2-nesting domain: * '''parent_id:''' List of integers specifying the domain number of the nest’s parent (One per domain). * '''geog_data_path:''' Path to the directory where the geographical data directories may be found. This data can be downloaded from this [http://www2.mmm.ucar.edu/wrf/users/download/get_sources_wps_geog.html link]. ||   geog_data_path='\$HOME/WRF/wps_topo/geog' Also, the GEOGRID.TBL file is needed to be present into a folder called geogrid, in the same place where geogrid is going to be executed. The final structure is the following: {{{