[MITgcm-support] OBCS north/south and periodic east/west?

[Scott Bachman]

Yun's solution fixed my problem.  Thank you for your replies Dimitris and Yun!

Scott


On Apr 11, 2014, at 10:08 PM, Dimitris Menemenlis <dmenemenlis at gmail.com> wrote:

> north and southern boundaries are 25, right, not 250?
> 
> On Apr 11, 2014, at 12:19 PM, Yun Xu <yunx at uci.edu> wrote:
> 
>> Hi Scott, 
>> 
>> try:
>> OB_Jnorth=   240*-1,
>> OB_Jsouth=    240*1,
>> 
>> Yun
>> 
>> On Apr 11, 2014, at 12:05 PM, S. Bachman <sb965 at cam.ac.uk> wrote:
>> 
>>> Hi all,
>>> 
>>> I seem to be having trouble getting MITgcm to run with OBCS enabled on the northern and southern boundaries and just leaving the east and west periodic.  I've undefined ALLOW_OBCS_EAST and ALLOW_OBCS_WEST in OBCS_OPTIONS.h, and am reading in the N/S boundaries from file.  My domain is 240x25x60 divided into 10 tiles (24 points each) in the zonal direction.  My data.obcs looks like this:
>>> 
>>> # ***************
>>> # Open boundaries
>>> # ***************
>>> &OBCS_PARM01
>>> OB_Jnorth=   24*-1,
>>> OB_Jsouth=    24*1,
>>> 
>>> #
>>> useOrlanskiNorth=.FALSE.,
>>> useOBCSsponge=.FALSE.,
>>> useOBCSbalance=.FALSE.,
>>> useOBCSprescribe=.TRUE.,
>>> #
>>> OBNuFile='UVEL_north.bin',
>>> OBNvFile='VVEL_north.bin',
>>> OBNtFile='THETA_north.bin',
>>> OBNsFile='SALT_north.bin',
>>> 
>>> OBSuFile='UVEL_south.bin',
>>> OBSvFile='VVEL_south.bin',
>>> OBStFile='THETA_south.bin',
>>> OBSsFile='SALT_south.bin',
>>> 
>>> but I'm getting an error at startup
>>> 
>>> (PID.TID 0000.0001) *** ERROR *** S/R OBCS_CHECK: Inside Mask and OB locations disagree :
>>> (PID.TID 0000.0001) *** ERROR ***  from insideMask (bi,bj=  1,  1) expects OBE=    1 @ j=    1
>>> (PID.TID 0000.0001) *** ERROR ***  from insideMask (bi,bj=  1,  1) expects OBW=   24 @ j=    1
>>> (PID.TID 0000.0001) *** ERROR ***  from insideMask (bi,bj=  1,  1) expects OBE=    1 @ j=   25
>>> (PID.TID 0000.0001) *** ERROR ***  from insideMask (bi,bj=  1,  1) expects OBW=   24 @ j=   25
>>> (PID.TID 0000.0001) *** ERROR *** OBCS_CHECK:     8 errors in OB location vs Mask
>>> (PID.TID 0000.0001) *** ERROR *** S/R ALL_PROC_DIE: ending the run
>>> 
>>> This is really confusing because OBCS isn't even enabled on the E/W boundaries, so I'm not sure whether I should be adding something to my data.obcs or if something else is going on here.  I also noticed that it is calling for OBE and OBW at the corner points of the tile only, if that means anything.
>>> 
>>> Any help would be greatly appreciated, thanks!
>>> Scott
> 
> 
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