[MITgcm-support] exp0 with non-constant bathymetry

Samar Khatiwala spk at ldeo.columbia.edu
Tue Sep 13 15:56:17 EDT 2005


Sergey, I believe this parameter goes into PARM01. You can always  
look in ini_parms.F to
see which namelist to put it into.

Samar

On Sep 13, 2005, at 3:52 PM, Sergey Vinogradov wrote:

> Matt, Samar:
> Indeed, there is a problem with my Depth.data. I'm changing the  
> hFacMin to 0.1 (< shallowest bathymetry/layer thickness). However,  
> if I put hFacMin into data file (in PARM04 group ), it cannot  
> digest it "namelist read: read unexpected character". Can you  
> change this parameter only in a source code?
> Thanks
> Sergey
>
> Matthew Mazloff wrote:
>> Hi Sergey,
>>
>> If delZ=5000 then you have a single layer model.  To have the  
>> single layer vary with depth you have to use partial cells.  It  
>> sounds like partial cells are being used in your model but with a  
>> hfacmin and a hfacmindr that is smaller than you wish.  You should  
>> either change these values or add more layers.  Info on partial  
>> cells is in 2.10.7 of the manual.
>> http://mitgcm.org/pelican/online_documents/node49.html
>>
>> -Matt
>>
>>
>>
>> Sergey Vinogradov wrote:
>>> Hi,
>>>
>>> I'm trying to modify exp0 (barotropic double gyre, flat bottom).
>>> If I put spatially-varying bathymetry (a peace of realistic  
>>> seafloor), I get some places where elevation==0. This happens  
>>> over relatively shallow (but not too shallow) areas. My  
>>> parameters are delZ=5000., bathymetry varies between -764 and  
>>> -5000m.
>>> These two pictures show stdev of computed elevation/ bathymetry  
>>> for the default example and for the case with realistic topography.
>>> I'd appreciate any hint on how to fix this problem,
>>>
>>> Regards,
>
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