How to Compile?

How to Run?

WRF Namelist

Known Problems and Fixes

Graphic Tools

Utilities

 

 

 

WRF Model Version 3.9 : Known Problems and Fixes


Restart Problem (posted April 17, 2017)

Problem: Beginning with this release (V3.9), the restart capability is broken, unless one restarts from a boundary condition time. This means if one has 6 hourly lateral boundary conditions, and if one restarts at 6 hourly interval, restart works fine. Restarting from at times between the boundary times may fail.

Solution: We are looking for a fix to the problem.

Ndown Program Problem (posted September 8, 2017)

Problem: When using the new (since V3.9) physics suites capability, along with the ndown.exe program, a fatal error occurs (the actual numbers listed below are dependent on the physics suite chosen):
------------------ ERROR ---------------
namelist : sf_surface_physics = 2
input_files : SF_SURFACE_PHYSICS = -1 (from wrfinput files).
---- ERROR: Mismatch between namelist and global attribute SF_SURFACE_PHYSICS
NOTE: 1 namelist vs input data inconsistencies found.
--------------- FATAL CALLED -------------

Solution: There is a modification to the file main/ndown_em.F. The options are to update to most recent version of code, or to simply download the ndown_em.F.fix-for-v3.9.tar.gz file, place it in your WRFV3/main/ directory, and then unpack the file. You will then need to recompile the code; however, since this is not a configuration or registry change, it will not be necessary to issue a 'clean -a' or to reconfigure. Simply recompile the code.

Using a Regional lat-lon Projection (posted September 8, 2017)

Problem: Beginning with this release (V3.9), when using a lat-lon projection that is regional (NOT global), there was no check implemented to assign map factors (from what they were, to what they need to be, for backward compatibility).

Solution: There is a modification to the file dyn_em/module_initialize_real.F. The options are to update to most recent version of code, or to simply download the module_initialize_real.F.fix-for-v3.9.tar.gz file, place it in your WRFV3/dyn_em/ directory, and then unpack the file. You will then need to recompile the code; however, since this is not a configuration or registry change, it will not be necessary to issue a 'clean -a' or to reconfigure. Simply recompile the code.

Groundwater Option with Noah-MP (posted September 8, 2017)

Problem: Beginning with this release (V3.9), when using the Noah-MP 'groundwater' option, there were 2 "sign" errors in the code, as well as a problem with the FANGLE parameter calculation.

Solution: There are modifications to several files. The options are to update to the most recent version of the code, or to download the following tar files, unpack them, and place them in their correct corresponding directories:

Registry.EM_COMMON.fix-for-v3.9.tar.gz - place in WRFV3/Registry/
start_em.F.fix-for-v3.9.tar.gz - place in WRFV3/dyn_em/
module_physics_init.F.fix-for-v3.9.tar.gz - place in WRFV3/phys/
phys/module_sf_noahmp_groundwater.F.fix-for-v3.9.tar.gz - place in WRFV3/phys/
module_sf_noahmpdrv.F.fix-for-v3.9.tar.gz - place in WRFV3/phys/

You will then need to recompile the code. Because there are changes to the registry, it will be mandatory to issue a 'clean -a', and then to reconfigure, prior to recompiling the code.

 

 


Known-problems in previous version.



 
 
Home -- Model System -- User Support -- Doc / Pub -- Links -- Download -- WRF Real-time Forecast