(shr_sys_abort) ERROR: remap transport: bad departure points

[shiwansha]

I have run CESM 1.2.2 coupled with SLAB OCEAN with resolution f09_g16 . I am using comset (E_1850_CAM5). Model has run for 26 years for the first submission. I submitted the model second time as a CONTINUE run. I am getting the following error mentioned below.

CESM.log
----------------------------------------------------------------------------------------------
Warning: Departure points out of bounds in remap
my_task, i, j = 814 2 7
dpx, dpy = 120.471615714361 -3869017.83058130
HTN(i,j), HTN(i+1,j) = 29661.2715820699 29661.2715820699
HTE(i,j), HTE(i,j+1) = 59395.4550164216 59395.4550164216
istep1, my_task, iblk = 1 814 1
Global block: 45
Global i and j: 221 6

Warning: Departure points out of bounds in remap
my_task, i, j = 800 6 4

Warning: Departure points out of bounds in remap
my_task, i, j = 820 6 7
dpx, dpy = 81.4895016262310 -3204009.49814333
HTN(i,j), HTN(i+1,j) = 36409.0712978464 36409.0712978464
HTE(i,j), HTE(i,j+1) = 59395.4550164216 59395.4550164216
istep1, my_task, iblk = 1 820 1
Global block: 115
Global i and j: 255 12
(shr_sys_abort) ERROR: remap transport: bad departure points
(shr_sys_abort) WARNING: calling shr_mpi_abort() and stopping
----------------------------------------------------------------------------------------
.
.
Whereas, the cice log file shows
-------------------------------------------------------------------------------------------
Read rpointer.ice
Using restart dump=SLAB_OCEAN_PD.cice.r.0026-06-07-00000.nc
Restart read at istep= 0 833500800.000000
3942000000.00000
min/max area, vol ice, vol snow, Tsfc
min/max eicen for each layer
min/max esnon for each layer
min/max velocity components
radiation fields
min/max ocean stress components
internal stress components
ice mask for dynamics

istep1: 0 idate: 260607 sec: 0

istep1: 0 idate: 260607 sec: 0

Warning: Departure points out of bounds in remap
my_task, i, j = 0 6 7
dpx, dpy = -38.7731302371980 1177404.32156192
HTN(i,j), HTN(i+1,j) = 29661.2715820699 29661.2715820699
HTE(i,j), HTE(i,j+1) = 59395.4550164216 59395.4550164216
istep1, my_task, iblk = 1 0 1
Global block: 1
Global i and j: 5 6
(shr_sys_abort) ERROR: remap transport: bad departure points
(shr_sys_abort) WARNING: calling shr_mpi_abort() and stopping
<s/phd/asz178027/cesm1_2_2_OUT/CASES/SLAB_OCEAN_PD/run/ice.log.211222-224540 CWD: /scratch/cas/phd/asz178027/cesm1_2_2_OUT/CASES/SLAB_OCEAN_PD/run Line: 302 Column: 1
"ice.log.211222-224540" 302L, 16830C
------------------------------------------------------------------------------------


Please suggest if anything is required in order to continue the simulation.

I am currently implementing the changes mentioned in the link below which I came across from other cesm forum post

Negative Ice Area in Horizontal Remapping

Negative Ice Area in Horizontal Remapping

www.cesm.ucar.edu

What I am not sure about is, can I implement these namelist changes while continuing the simulation?
Or do I have to build the model again as a branch run, before submitting this new case? Will this affect my model results?

Please suggest.

Thanks

 

[dbailey]

Changing the timestep may impact your results. However, the simulation actually running is better than not running. Here are some additional tips:

FAQ: Dynamic convergence errors.

Sometimes you will receive a message from CICE that says "departure points out of bounds" or "negative ice area in horizontal remapping". These are dynamic convergence errors and are akin to a CFL violation. Generally, this requires reducing the sea ice timestep. Here is a quick guide to help...

bb.cgd.ucar.edu