[MITgcm-support] Initial hydrog/bathy-Files and CS-grid

Martin Losch Martin.Losch at awi.de
Mon Mar 5 03:13:55 EST 2012

Hi Maura,

did you get an answer to your question?

The input fields for bathymetry and initial conditions (and for surface forcing) are your "responsibility". The interpolation by the exf-package could be used, but it's really bi-linear or bi-cubic interpolation, which you can more easily do offline with e.g. matlab (or octave). Use the grid information for a script like this (I am using matlab syntax):

xc = rdmds('XC');
yc = rdmds('YC');

% 2d field fld2d on lon-lat grid:
fld = interp2(lon,lat,fld2d,xc(:),yc(:),method); % method = 'linear','cubic', etc see help interp2
fld = reshape(fld,size(xc));

there are more complicated and robust methods, especially bathymetry probably needs to be tweaked a little.


On Feb 23, 2012, at 4:29 PM, Maura BRUNETTI wrote:

> Hi, 
> I would like to use the cubed sphere configuration for paleoclimate simulations. For this I need to create bathyFile, hydrogThetaFile and hydrogSaltFile on the cubed sphere for different past bathymetries.  
> In other words, I would like to know how to create files analogous to bathy_cs32.bin, lev_S_cs_15k.bin, lev_T_cs_15k.bin in MITgcm/verification/global_ocean.cs32x15/input for different bathymetries.
> I know that the exf package allows us to interpolate on the curvilinear grid, and indeed I use this package for interpolating all the surface boundary conditions (uvwind, swdown, precip, etc) on the cubed-sphere grid. Is it possible to use this package for interpolating bathyFile and hydrogTheta/SaltFile on the cubed sphere? How do I need to set parameters in data and data.exf? Or what do you suggest to use? 
> Many thanks, 
> Maura
> --
> Maura Brunetti
> Institute for Environmental Sciences (ISE)
> University of Geneva
> Switzerland
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support

More information about the MITgcm-support mailing list