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vertical thermo error

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vertical thermo error

Dear all,

I am working with CESM1.2.2, E1850CN compset  (CAM4, CLM4, and a Slab-ocean).

I would like to remove the diurnal and seasonal cycle of solar forcing, so I modified files "zenith.F90", "radsw.F90", and "shr_orb_mod.F90" under case directory.  

Other settings are unchanged. I started with a "startup" run and the model crashed at year3, month 11 every time, with an error saying:


Starting thermo, Tsn < Tmin

 Tsn=  -100.007281731455     

 Tmin=  -100.000000000000     

 istep1, my_task, i, j:     1146098          83           3           6

 qsn  -179995997.739214     

 istep1, my_task, iblk =     1146098          83           2

 Global block:         986

 Global i and j:         252         365

 Lat, Lon:   72.6737451597182       -91.8653354459640     

(shr_sys_abort) ERROR: ice: Vertical thermo error

(shr_sys_abort) WARNING: calling shr_mpi_abort() and stopping

application called MPI_Abort(MPI_COMM_WORLD, 1001) - process 83


I found someone else also posted such error before, in which he suggested to increase ocean time step to get past this error. For slab-ocean, where could I modify the time step?  

And, i am thinking is there a code-based solution to solve this problem now?   





This message indicates that your surface temperature is dropping below -100C. So, there is something very wrong in the forcing and the modifications that you have done.


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