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MITgcm ( M.I.T General  Circulation  Model) :  http://mitgcm.org/

Novel Aspects:

• it can be used to study both atmospheric and oceanic phenomena; one hydrodynamical kernel is used to drive forward both atmospheric and oceanic models.
  

• it has a non-hydrostatic capability and so can be used to study both small-scale and large scale processes.
  

• finite volume techniques are employed yielding an intuitive discretization and support for the treatment of irregular geometries using orthogonal curvilinear grids and shaved cells.
  

• tangent linear and adjoint counterparts are automatically maintained along with the forward model, permitting sensitivity and optimization studies.
• the model is developed to perform efficiently on a wide variety of computational platforms.

Environment:

Ubuntu

Download Source: 

Visit  http://mitgcm.org/public/source_code.html. Three alternative ways are provided for downloading the source.

• Download using CVS pserver
• Download the most recent checkpoint as a "tar" file (112MB for now)
• Download one of the daily snap-shots

Download User Manual:

Visit  http://mitgcm.org/public/docs.html. I chose  http://mitgcm.org/public/r2_manual/latest/online_documents/manual.pdf.

Build The Code:

Follow the instructions in section  3.4 Building the code.

% cd verification/exp2/build

% ../../../tools/genmake2 -mods=../code

Here I bumped into my first obstacle -- a puzzling error message. It's like that I should manually specify the optfile but finally I figured out that the problem was merely due to lack of a fortran compiler.

% sudo apt-get install gfortran

Now the corresponding optfile is  ../../../tools/build_options/linux_ia32_gfortran. Actually genmake2 can determine the optfile automatically now.

% ../../../tools/genmake2 -mods=../code

You can specify the opt-file with command line parameter -of=path_to_optfile

% make depend

% make

Run The Model:

% cd ../run

% cp ../input/* ./

% cp ../build/mitgcmuv ./

% ./mitgcmuv > output.txt

Install Matlab For Linux:

See  http://blog.csdn.net/lzl124631x/article/details/16883831

Read And Visualize Output in Matlab:

% /opt/matlab2009/bin/matlab

>> cd ~/MITgcm/utils/matlab

>> H=rdmds(’../../verification/exp2/run/Depth’);

>> contourf(H’);colorbar;

>> title(’Depth of fluid as used by model’);

>> eta=rdmds(’../../verification/exp4/run/Eta’,10);

>> imagesc(eta’);axis ij;colorbar;

>> title(’Surface height at iter=10’);