WRF restart run cannot find a valid time to start the LBC

[edougherty]

Hi there,

I am attempting to run a WRF restart run. I ran my first run with the following set-up in my namelist.input file:

&time_control
 run_days                            = 0,
 run_hours                           = 12,
 run_minutes                         = 0,
 run_seconds                         = 0,
 start_year                          = 2008, 2008, 2008, 2008,
 start_month                         = 03,   03,   03,   03,
 start_day                           = 17,   17,   17,   17,
 start_hour                          = 18,   18,   18,  18,
 end_year                            = 2008, 2008, 2008, 2008,
 end_month                           = 03,   03,   03,   03,
 end_day                             = 18,   18,   18,   18,
 end_hour                            = 06,   06,   06,   06,
 interval_seconds                    = 21600
 input_from_file                     = .true.,.true.,.true.,.true.,
 history_interval                    = 180,   180,    60,    60,
 frames_per_outfile                  = 1,     1,     1,     1,
 restart                             = .false.,
 restart_interval                    = 720,
 io_form_history                     = 2
 io_form_restart                     = 102

And this generated the correct wrfout and wrfrst files.

However, when I try to run the restart run with the following namelist configuration:

&time_control
 run_days                            = 0,
 run_hours                           = 12,
 run_minutes                         = 0,
 run_seconds                         = 0,
 start_year                          = 2008, 2008, 2008, 2008,
 start_month                         = 03,   03,   03,   03,
 start_day                           = 18,   18,   18,   18,
 start_hour                          = 06,   06,   06,   06,
 end_year                            = 2008, 2008, 2008, 2008,
 end_month                           = 03,   03,   03,   03,
 end_day                             = 18,   18,   18,   18,
 end_hour                            = 18,   18,   18,   18,
 interval_seconds                    = 21600
 input_from_file                     = .true.,.true.,.true.,.true.,
 history_interval                    = 180,   180,    60,    60,
 frames_per_outfile                  = 1,     1,     1,     1,
 restart                             = .true.,
 restart_interval                    = 720,
 io_form_history                     = 2
 io_form_restart                     = 102

I receive the following error messages in my rsl files:

d01 2008-03-18_06:00:00  Input data is acceptable to use: wrfbdy_d01
d01 2008-03-18_06:00:00 WRF restart, LBC starts at 2008-03-17_18:00:00 and restart starts at 2008-03-18_06:00:00
 LBC for restart: Starting valid date = 2008-03-17_18:00:00, Ending valid date = 2008-03-18_00:00:00
 LBC for restart: Restart time            = 2008-03-18_06:00:00
 LBC for restart: Looking for a bounding time
 LBC for restart: Starting valid date = 2008-03-18_00:00:00, Ending valid date = 2008-03-18_06:00:00
d01 2008-03-18_06:00:00 ---- ERROR: Cannot find a valid time to start the LBC during this restart, likely ran out of time periods to test

Can you please help me figure out how to fix this issue?

 

[Ming Chen]

First, Please confirm that you have wrfrst file at 2008-03-18_06

Then check the wrfbdy file to make sure int covers the period of your integration. Please issue the command below:
ncdump -v Times wrfbdy_d01, and look at the time slices it include.

 

[edougherty]

Yes, I have wrfrst files for 2008-03-18_06:00.

I checked the times in wrfbdy_d01 and the time slice is from 2008-03-17_18:00:00 to 2008-03-18_00:00:00, so I'm guessing this is the issue.

I will try running real.exe and wrf.exe to see if this fixes the issue. Thanks!

 

[Ming Chen]

You need to rerun real.exe to produce new wrfbdy that covers the entire period of your integration.

 

[edougherty]

I just realized that was the issue. Thanks!

 

[Ming Chen]

Let us know if you still have any issues running WRF.