RSUB_TOP IS POSITIVE in Drainage!

[EceOzen]

I am using dynamiccore 3 and running my simulation 2 km resolution and 15 min output. Ds is 0.5 and I am running between 01-07-2021 and 01-09-2021.

I was playing with different parameters and my model started to give this error.

SEARCH BC data for 2021071209 , step = 195840
READY BC from 2021071208 to 2021071209
RSUB_TOP IS POSITIVE in Drainage!
clm model is stopping
-------------- FATAL CALLED ---------------
Fatal in file: mod_clm_soilhydrology.F90 at line: 1832
clm now stopping

Abort called by computing node 1 at 2025-04-15 22:01:46.249 +0300
Execution terminated because of runtime error

MPI_ABORT was invoked on rank 1 in communicator MPI COMMUNICATOR 3 DUP FROM 0
with errorcode 1.

NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
You may or may not see output from other processes, depending on
exactly when Open MPI kills them.

My new inputs are:

&grellparam
igcc = 2, ! Fritsch & Chappell (1980) - Often good for convective precipitation

And

&molochparam
mo_ztop = 20000.0, ! Model top at 20 km — common for NH simulations
mo_h = 6500.0, ! Reference height (good default)
mo_a0 = 0.0, ! No vertical stretching (set >0 if you need more resolution near surface)
mo_nadv = 3, ! Stable for short dt (dt = 5s)
mo_nsound = 5, ! Also good for small dt and complex terrain
mo_nzfilt = 8, ! Filter W for top 8 levels (~kz/5, stable for kz=40)
mod_divfilter = .true., ! Use divergence filter for terrain noise
mo_anu2 = 0.6, ! Strength of div filter (increase if needed)
/

&nonhydroparam
ifupr = 0, ! Klemp-Durran radiative upper BC (common)
nhbet = 0.3, ! Time-weighting for acoustic damping (0.2–0.4)
nhxkd = 0.1, ! Time smoothing
ifrayd = 1, ! Rayleigh damping ON
rayndamp = 6, ! Damping top 6 levels
rayalpha0 = 0.0003, ! Strength of Rayleigh damping
rayhd = 10000.0, ! Damping scale height
/

I tried something such as decreasing kz 40 to 30,or defining parameters under by using user guide.

&clm_soilhydrology_inparm
/
&clm_hydrology1_inparm
/

Do you have any suggestions to solve this? Thank you so much!

[graziano-giuliani]

Have you applied 9f7379c ? If so, we have partially reverted a regression in fcc4f9d.

[EceOzen]

No i didnt apply any of new pull but i will check this out

[EceOzen]

Hello again, I applied changes and I just get the error couple of days later, first error was occurred in 12.07.2021, last night I could reach 29.07.2021. Now I run my simulation for 1 hour instead of 15 minutes. But it just a try. Is there any suggestions or can i use any other parameters?

Thank you!

[EceOzen]

1 hour run got the same error in 29.07.2021