Re: 回复： Re: [MITgcm-support] parameter set

[Martin Losch]

you should set
  OB_Jsouth=121*1,
  OB_Ieast=61*-1,
in the vertical all points are assumed to be a boundary point if the  
surface points is a boundary poiint. OB_Jnorth and Iwest should be  
zeros (the default) if there are no open boundaries  there.
[  you can also, if only part of your, e.g., southern boundary is  
open boundary, set OB_Jsouth = 10*1,50*0,20*2,40*3,1*0. In this  
example the first ten points in x-direction at J=1 would be open  
boundary points, the next 50 points would be solid or periodic  
boundaries depending on your land mask, the 20 points would be  
boundary points at J=2 and then 40 points at J=0 and then another  
solid/periodic boundary point. the -1 is equivalent to Nx/Ny, so in  
your case OB_least=61*121 is the same as 61*-1. ]

eedata: the error message is obvious, somehow the file eedata could  
not be openend. Read permissions? Is the file in the correct  
directory (where you run the executable)? That's usually the problem.

Martin


On 2 Sep 2008, at 15:32, Maxiaohui wrote:

> Hi Martin,
>
> Thank you for your suggestion.
> I noticed that in the data.obcs of exp4,
> OB_Jnorth=80*-1,
>  OB_Jsouth=80*1,
>  OB_Ieast=42*-1,
>  OB_Iwest=42*1,
> that means all the points on the boundary must have u v  
> values,right? Since my experiment has land points at the boudary,  
> moreover, different layers have different land points(there are 23  
> layers in my experiment), then how should I set  
> OB_Jnorth ,OB_Jsouth,OB_Ieast,OB_Iwest ?
>
> One more qustion ,when I run this experiment for a try , I got the  
> followeing error:
> S/R EESET_PARMS
> Unable to open execution environment
> parameter file "eedata"
> ABNORMAL END: S/R EESET_PARMS
> MPI: MPI_COMM_WORLD rank 0 has terminated without calling  
> MPI_Finalize()
> MPI: aborting job
> Is this related to my size.h  file? My size.h file is:
>    &           sNx =  121,
>      &           sNy =  61,
>      &           OLx =   3,
>      &           OLy =   3,
>      &           nSx =   1,
>      &           nSy =   1,
>      &           nPx =   1,
>      &           nPy =   1,
>      &           Nx  = sNx*nSx*nPx,
>      &           Ny  = sNy*nSy*nPy,
>      &           Nr  =   23)
>
> and the eedata file is:
> # Example "eedata" file
> # Lines beginning "#" are comments
> # nTx - No. threads per process in X
> # nTy - No. threads per process in Y
>  &EEPARMS
>  nTx=1,
>  nTy=1,
>  &
> # Note: Some systems use & as the
> # namelist terminator. Other systems
> # use a / character (as shown here).
> Could you tell me what is going wrong? Thank you very much!
>
>
> sincerely,
>
> Xiaohui
>
>
>
>
>
>
>
>
> Martin Losch <Martin.Losch at awi.de> 写道：
> Hi Xiaohui,
>
> in "data":
> to set the monthly interval between forcing field records (months) set
> externForcingPeriod=2592000.,
> to have your twelve month forcing repeat year after year set
> periodicExternalForcing=.TRUE.,
> externForcingCycle=31104000.,
> These values are then also valid for the obcs-boundary conditions. In
> other words, in "data.obcs" you need to specify the boundary value
> files, just as in exp4 and that's it. This is convenient, but
> inflexible, because it requires that all your forcing and boundary
> values have to be available at the same forcing "frequency/period",
> but you have that.
>
> Alternatively you could use the exf/cal package to be able to set the
> period/cycle indiviually for each external field, but for a simple
> configuration I don't recommend that.
>
> Martin
>
> On 1 Sep 2008, at 03:24, Maxiaohui wrote:
>
> > Hi all,
> >
> > I am now trying an experiment in an (121x61x23） area(resolution:
> > 1/6x1/6°) with open boundary. I have prepared u, v t s (121x23x12
> > or 61x23x12) at the south and east boundary with twelve
> > months,since the north and west boundary are on the land .I also
> > use heatflux ,freshwater flux and wind filed(121 x61 x12) as the
> > external forcing and t s field( 121 x61x23 12) as the initial
> > field, all these files are twelve months.
> > Now I am confused at how to set the parameters.Could anyone tell
> > me how to set the parameters in data.obcs and data file? Could you
> > give me an example?
> > I will appreciate your help very much!
> >
> > Xiaohui
> >
> > 雅虎邮箱，您的终生邮箱！
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> > MITgcm-support at mitgcm.org
> > http://mitgcm.org/mailman/listinfo/mitgcm-support
>
>
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