[MITgcm-support] [EXTERNAL] topography with OBCS
mmazloff at ucsd.edu
Mon Jun 22 15:23:30 EDT 2020
You are sponging 40 points in. Is that the problem - is it restoring to 0 because of that?
And see if that helps?
> On Jun 21, 2020, at 2:57 AM, Andreas Klocker <andreas.klocker at utas.edu.au> wrote:
> What do you mean by extracting my boundary conditions at the correct location?
> From: MITgcm-support <mitgcm-support-bounces at mitgcm.org <mailto:mitgcm-support-bounces at mitgcm.org>> on behalf of Dimitris Menemenlis <dmenemenlis at gmail.com <mailto:dmenemenlis at gmail.com>>
> Sent: Friday, 19 June 2020 1:12 PM
> To: MITgcm Support <mitgcm-support at mitgcm.org <mailto:mitgcm-support at mitgcm.org>>
> Subject: Re: [MITgcm-support] [EXTERNAL] topography with OBCS
> Hi Andreas, are you sure that you are extracting your boundary conditions at the correct location?
> You could be off by one grid cell, which could cause this problem. Dimitris
>> On Jun 18, 2020, at 6:21 PM, Andreas Klocker <andreas.klocker at utas.edu.au <mailto:andreas.klocker at utas.edu.au>> wrote:
>> I am trying to set up a regional model configuration with OBCS. For some reason the model seems to introduce salinities where I actually have bathymetry (see attached figure; bathymetry left, salinities right). Salinities this low definitely do not exist in the files containing the bounday conditions. Is it necessary to set the open boundary exactly to where I have ocean, or should the bathymetry file take care of this by telling the model there should be nothing happening in case of zero water depth?
>> Here's my data.obcs file:
>> # Open-boundaries
>> OB_Iwest = 600*1,
>> OB_Ieast = 600*-1,
>> OB_Jsouth = 2600*1,
>> OB_Jnorth = 2600*-1,
>> useOBCSsponge = .TRUE.,
>> useOBCSbalance = .TRUE.,
>> useOBCSprescribe = .TRUE.,
>> useOrlanskiWest = .FALSE.,
>> useOrlanskiEast = .FALSE.,
>> useOrlanskiSouth = .FALSE.,
>> useOrlanskiNorth = .FALSE.,
>> OBWuFile = 'OWU',
>> OBWvFile = 'OWV',
>> OBWtFile = 'OWT',
>> OBWsFile = 'OWS',
>> OBEuFile = 'OEU',
>> OBEvFile = 'OEV',
>> OBEtFile = 'OET',
>> OBEsFile = 'OES',
>> OBSuFile = 'OSU',
>> OBSvFile = 'OSV',
>> OBStFile = 'OST',
>> OBSsFile = 'OSS',
>> OBNuFile = 'ONU',
>> OBNvFile = 'ONV',
>> OBNtFile = 'ONT',
>> OBNsFile = 'ONS',
>> # OBCS_monitorFreq= 86400.,
>> # OBCS_monSelect = 1,
>> # Orlanski parameters
>> # Cmax=0.45,
>> # cVelTimeScale=1000.,
>> Thanks in advance!
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