WRF-4.4.2 crashes with obs nudging

[Islen Vallejo-Henao]

Dear WRF community.

I am trying to run WRF-4.4.2 with obs nudging enabled but it crashes after a short time. I am attaching the wrf log as well as the namelists.

Flerchinger USEd in NEW version. Iterations= 10
Flerchinger USEd in NEW version. Iterations= 10
Timing for main: time 2021-01-01_00:09:00 on domain 3: 0.22596 elapsed seconds
Timing for main: time 2021-01-01_00:09:00 on domain 2: 1.44690 elapsed seconds
Timing for main: time 2021-01-01_00:09:00 on domain 1: 4.39313 elapsed seconds
OBS NUDGING: Reading new obs for time window TBACK = -0.517 TFORWD = 0.817 for grid = 1
****** CALL IN4DOB AT KTAU = 10 AND XTIME = 9.00: NSTA = 1 ******

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
Backtrace for this error:
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:

Backtrace for this error:
#0 0x7fe0edae2960 in ???
#1 0x7fe0edae1ac5 in ???
#2 0x7fe0ed68851f in ???
at ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
#3 0x559b322d795f in ???
#4 0x559b322fab8a in ???
#5 0x559b323094c2 in ???
#6 0x559b319513e7 in ???
#7 0x7fe0ed8a5a15 in ???
#8 0x559b3196414f in ???
#9 0x559b31a7ae1f in ???
#10 0x559b3135eb3b in ???
#11 0x559b310d7b47 in ???
#12 0x559b3015918f in ???
#13 0x559b300e0af7 in ???
#14 0x559b300e0055 in ???
#15 0x7fe0ed66fd8f in __libc_start_call_main
at ../sysdeps/nptl/libc_start_call_main.h:58
#16 0x7fe0ed66fe3f in __libc_start_main_impl
at ../csu/libc-start.c:392
#17 0x559b300e0094 in ???
#18 0xffffffffffffffff in ???
WRF finished successfully with return code -11.

Thanks,

- Islen

 

[Ming Chen]

Hi,
The message "Flerchinger USEd in NEW version. Iterations= 10" indicates that the physics went wrong in surface scheme, which might be attributed to unreasonable OBS data that are incorporated into WRF.
Please run with the debug mode, finding when and where the error first popped up. This will give you some hints how to fix the issue.