Problem with the Use of GWD Option with MYJ PBL (Posted 7/30/09, updated 12/7/09)
Problem: The model may abort if gravity wave drag option (gwd_opt = 1) is used with MYJ PBL.
Solution: Download the gwd.tar.gz file into WRFV3 directory. Unzip and untar the file there, and it will replace two modules in phys/ directory: module_pbl_driver.F and module_bl_gwdo.F. Recompile. This fix should work for V3.1 code too.
Problem with DFI Option (Posted 7/30/09, updated 12/7/09)
Problem: The model may abort when DFI option is used.
Solution: Download dfi.F.fix to WRFV3/share/ directory, and rename it to dfi.F. Recompile. This fix works for V3.1 code too.
Running WRF with OpenMP (posted 10/14/09)
Problem: If you are running WRF model with OpenMP (smpar compile) and you have set something like 'unlimit' or 'ulimit -s unlimited', or set MP_STACK_SIZE to 64000000 or larger, the model still crashes, this may be a problem of over specifying stack size.
Solution: Set stack size sufficiently large, but not unlimited value. A few GB is usually more than enough.
If your computer or compiler does not recognize MP_STACK_SIZE, try KMP_STACKSIZE and/or OMP_STACKSIZE.
Restart Issue (posted 7/31/09)
Problem: There are problem with restart produing idential results as continous run for physics options level 3 MYNN PBL and BEP urban canopy option with nesting.
Solution: No solution yet. Working on the problem for future release.
Occasional Spurious High PBL Height In MYJ Scheme (posted 8/1/08)
Problem: MYJ PBL scheme occasionally produces unrealistically high PBL and high TKE in sporadic columns. This is reported by PSU researchers.
Solution: PSU provided a fix for V3.0 code. A newer version will be available later. The scheme computes the PBL depth by using the TKE profile criteria from Penn State, instead of the current MYJ method that searches for the first level of background TKE. This fix reduces the PBL height in general.
OpenMP compile in V3.1.1 (posted 7/31/09)
Problem: Certain physics options do not work correctly with OpenMP compile for some applications. These are ra_lw_physics = 3, ra_sw_physics = 3 (both CAM radiation). These options are not thread-safe for global and adaptive time stepping cases. There is no known problem with these physics options if OpenMP is not used. Likewise, there is no known OpenMP problems with other physics options.
Solution: Do not attempt to use CAM radiation options with OpenMP compile in global and adaptive time-stepping applications.
