MITgcm

698b072c19 Jean*0001 Southern-Ocean box with Biochemistry, using Open-Boundary Conditions
                0002  (pkg/obcs) at Northern, Eastern and Western edges of the domain.
                0003 ======================================================================
                0004
                0005 This experiment illustrates and tests the use of package DIC with OBCS.
                0006
                0007 The configuration (e.g., resolution), model parameters and forcing are
                0008 almost identical to tutorial_global_oce_biogeo expect that the horizontal
                0009 domain is limited to a sub-domain around Drake passage with open-boundary
                0010 conditions coming from the last year of a 2 yrs global simulation and
                0011 initial conditions taken from t=1.yr of this same simulation.
                0012 This enable to compare directly the results of the first year simulation
                0013 of this regional set-up with the 2nd year results of the global set-up run.
                0014
                0015 Configure and compile the code:
                0016   cd build
                0017   ../../../tools/genmake2 -mods ../code [-of my_platform_optionFile]
                0018   make depend
                0019   make
                0020   cd ..
                0021
                0022 To run:
                0023   cd run
                0024   ln -s ../input/* .
                0025   ln -s ../build/mitgcmuv .
                0026   ./mitgcmuv > output.txt
                0027   cd ..
                0028
                0029 There is comparison output in the directory:
                0030   results/output.txt
                0031
                0032 ----------------------------------------------------------------------
                0033 To generate inital and open boundary conditions:
                0034 a) The global set-up (using executable from: tutorial_global_oce_biogeo/build)
                0035    was run for 2 years using model-parameter from inp_global/.
                0036  The only differences with the ones used in tutorial_global_oce_biogeo are:
                0037  - CD-Scheme is turned off (useCDscheme=F), since it is not implemented for OBCS ;
                0038  - as a consequence, horizontal viscosity (viscAh) is increased from 2.E5 to 3.E5;
                0039  - convective-adjustment diffusivity (ivdc_kappa) is reduced from 100. to 10.m^2/s;
                0040  - implicit vertical viscosity is turned off (not needed);
                0041  - free-surface exact conservation is turned on (exactConserv=T);
                0042  - use the Avective-Form of GM (in data.gmredi: GM_AdvForm=T) instead of Skew-Flux;
                0043
                0044  to repeat this global simutlation, from so_box_biogeo/
                0045   mkdir run_glob ; cd run_glob
                0046   ln -s ../inp_global/* .
                0047   ../inp_global/prepare_run
                0048   ln -s ../../tutorial_global_oce_biogeo/build/mitgcmuv .
                0049   ./mitgcmuv > output.glob
                0050   cd ..
                0051
                0052 b) Then regional model forcing files, initial conditions and open-boundary
                0053   conditions files are generated using the matlab script: "mk_box_input.m"
                0054   cd inp_global/
                0055   matlab
                0056   >> mk_box_input