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NorESM2-LM simulation crashed due to negative ridging ice

adagj opened this issue · comments

Hi,
@monsieuralok @oyvindseland @JorgSchwinger @JensBDebernard @tjiputra @DirkOlivie

I'm running NorESM2-LM on Betzy in emission driven mode, compset: NHISTesm
The simulation crashed after 2.5 years with the error (in the cesm log):

 Ridging error: aice0 < 0
 i, j, aice0:           2           9 -2.619344741106033E-008
 istep1, my_task, iblk =    35970349         403           2
 Global block:        2661
 Global i and j:         121         360
 ice: Ridging error
 ERROR: ice: Ridging error
 Image              PC                Routine            Line        Source
cesm.exe           0000000002A24096  Unknown               Unknown  Unknown
cesm.exe           00000000026A8750  shr_abort_mod_mp_         114  shr_abort_mod.F90
cesm.exe           00000000017DE224  ice_exit_mp_abort          46  ice_exit.F90
cesm.exe           0000000001B4AC66  ice_step_mod_mp_s        1449  ice_step_mod.F90
cesm.exe           0000000001B49A69  ice_step_mod_mp_s        1271  ice_step_mod.F90
cesm.exe           0000000001999539  cice_runmod_mp_ci         205  CICE_RunMod.F90
cesm.exe           00000000017CF9A8  ice_comp_mct_mp_i         563  ice_comp_mct.F90
cesm.exe           00000000004376A0  component_mod_mp_         728  component_mod.F90
cesm.exe           000000000041B76C  cime_comp_mod_mp_        2711  cime_comp_mod.F90
cesm.exe           00000000004372E7  MAIN__                    125  cime_driver.F90
cesm.exe           0000000000419512  Unknown               Unknown  Unknown
libc-2.17.so       00002AE0AFAD7545  __libc_start_main     Unknown  Unknown
cesm.exe           0000000000419429  Unknown               Unknown  Unknown

I could not find any useful information in the ice logs or any of the other logs.
I resubmitted the simulation and it has now passed the time where it previously crashed.
I have never seen this error before, so I wonder if it is related to Betzy being "unstable" or if it is something else.

Cheers,
Ada

This error was not reproduced when the simulation was resubmitted