Updating SST During the Model Run

Interpolate the input data onto our model domain (metgrid.exe)

1. Edit namelist.wps

Note: For detailed explanations of these variables, as well as suggestions for best practices, see the Best Practices WPS Namelist page, or Chapter 3 of the WRF User's Guide

start_date = '2016-10-06_00:00:00',
end_date = '2016-10-08_00:00:00',
interval_seconds = 21600,
fg_name = 'FILE', 'SST',
 

2. Run metgrid.exe to interpolate the input data on our model domain:

./metgrid.exe

The text below should appear on your screen during run time. Look for "Successful completion of metgrid " at the end of the run, indicating that all when well during the execution. You can also peruse the metgrid.log file for more information. or use it for troubleshooting if something went wrong.

Processing domain 1 of 1
Processing 2016-10-06_00
FILE
SST
Processing 2016-10-06_06
FILE
SST
Processing 2016-10-06_12
FILE
SST
Processing 2016-10-06_18
FILE
SST
Processing 2016-10-07_00
FILE
SST
Processing 2016-10-07_00
FILE
SST
Processing 2016-10-07_06
FILE
SST
Processing 2016-10-07_12
FILE
SST
Processing 2016-10-07_18
FILE
SST
Processing 2016-10-08_00
FILE
SST
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!  Successful completion of metgrid.  !
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    This step will create the following files :

met_em.d01.2016-10-06_00:00:00.nc
met_em.d01.2016-10-06_06:00:00.nc
met_em.d01.2016-10-06_12:00:00.nc
met_em.d01.2016-10-06_18:00:00.nc
met_em.d01.2016-10-07_00:00:00.nc
met_em.d01.2016-10-07_06:00:00.nc
met_em.d01.2016-10-07_12:00:00.nc
met_em.d01.2016-10-07_18:00:00.nc
met_em.d01.2016-10-08_00:00:00.nc
 

3. Check the contents of this file:

a. Use the ncdump utility:
    ncdump -h met_em.d01.2016-10-06_00:00:00.nc
b. Use the ncview utility.
c. This file can also be view with any of the supported graphical tools.

Running real.exe and wrf.exe will be be different for this case - go to the next page to see how.

Run WRF