f. Updating WRF lateral boundary conditions

Before running a forecast, you must first modify the tendencies within the lateral boundary condition files to be consistent with the new initial conditions of the WRF-Var analysis. This is a simple procedure, which can be achieved via the same wrapper script. You ran con200 case by adding following line in your wrapper script.

export RUN_UPDATE_BC=true

Note: Before running this procedure, you may like to check that you already have “da_update_bc.exe” executable in the “var/da” directory.

With this option standard script located at "var/scripts/da_run_update_bc.ksh” will be activated to update the content of “wrfbdy_d01”. The new lateral boundary input file will be located at the same location and with the same name. You may like to check its date of creation by issuing the following command

ls -ltr $RC_DIR/2007010200/wrfbdy_d01

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Trouble Shooting:

1. If you have questions, ask wrfhelp@ucar.edu

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