Run WPS:   STEP 2

Set-up WPS

• Make sure you are in the WPS directory
   
• Edit the namelist.wps file to set up 2 model domains.
  
  
  
  • Change max_dom to 2
  
  
  • Make sure the dates for domain 2 are set up correctly
    (we would like to start the nest at the same time as d01,
     so it is fine to set the d02 start and end dates equal to one another,
     and equal to the start date of domain 1)
  
  
  • Set up a domain over your area of interest
  
  
  • Try to keep your domain 2 size around 85x76 to help save space and time 
  
  
  • HINT: Use plotgrids.ncl to position your domain before you run geogrid.exe.
  
  
  • Other namelist variables to pay attention to are i_parent_start and j_parent_start
     

Run geogrid

Configure the model grid and generate geographical data files "geo_em.d01.nc" and "geo_em.d02.nc" by running the program geogrid.exe:

     ./geogrid.exe

 

Run ungrib

Have you recently degribbed the data you want to use? If YES, no need to do it again, just continue with 'Run metgrid.' If you no longer have this data, degrid it again.
 

Run metgrid

Interpolating external model data to your model grid (created by geogrid), and create input data for WRF by running the program metgrid.exe:

 
     ./metgrid.exe >& log.metgrid 
 

Move on to step 3 - running real.exe for 2 domains