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heimbach |
1.1.2.1 |
Example: Labrador Sea Region with Sea-Ice |
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========================================= |
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This example sets up a small (20x16x23) Labrador Sea experiment |
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coupled to a dynamic thermodynamic sea-ice model. |
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dimitri |
1.1.2.2 |
A brief description of the sea-ice model is in "seaice.ps". |
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heimbach |
1.1.2.1 |
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The domain of integration spans 280E to 320E and 46N to 78N. |
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Horizontal grid spacing is 2 degrees. |
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The 23 vertical levels and the bathymetry file |
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bathyFile = 'bathy.labsea' |
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are obtained from the the 2-degree ECCO configuration. |
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Integration is initialized from annual-mean Levitus climatology |
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hydrogThetaFile = 'LevCli_temp.labsea' |
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hydrogSaltFile = 'LevCli_salt.labsea' |
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Surface salinity relaxation is to the monthly mean Levitus climatology |
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saltClimFile = 'SSS.labsea' |
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Forcing files are a 1979-1999 monthly climatology computed from the |
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NCEP reanalysis (see pkg/seaice/SEAICE_FFIELDS.h for units and signs) |
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dimitri |
1.1.2.4 |
uwindFile = 'u10m.labsea79' # 10-m zonal wind |
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vwindFile = 'v10m.labsea79' # 10-m meridional wind |
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atempFile = 'tair.labsea1979' # 2-m air temperature |
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aqhFile = 'qa.labsea1979' # 2-m specific humidity |
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dimitri |
1.1.2.6 |
lwdownFile = 'flo.labsea1979' # downward longwave radiation |
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swdownFile = 'fsh.labsea1979' # downward shortwave radiation |
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dimitri |
1.1.2.4 |
precipFile = 'prate.labsea1979' # precipitation |
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heimbach |
1.1.2.1 |
evapFile = 'evap.labsea1979' # evaporation |
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dimitri |
1.1.2.2 |
Using testscript to test sea-ice code |
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heimbach |
1.1.2.1 |
===================================== |
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dimitri |
1.1.2.2 |
Running the testscript experiment: |
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cd verification |
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./testscript -force lab_sea |
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dimitri |
1.1.2.4 |
The default experiment is Experiment 8, below. |
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It uses pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf. |
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dimitri |
1.1.2.2 |
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Note that fairly large differences in accuracy occur across different |
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platforms. For example, testscript comparisons between g77 (Linux) |
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and f77 (SGI) generated output gives: |
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dimitri |
1.1.2.3 |
T S U V |
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C D M c m s m s m s m s |
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n p a R g m m e . m m e . m m e . m m e . |
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f n k u 2 i a a d i a a d i a a d i a a d |
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g d e n d n x n . n x n . n x n . n x n . |
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dimitri |
1.1.2.2 |
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dimitri |
1.1.2.3 |
Y Y Y Y 8 10 9 11 10 9 11 13 10 9 8 8 9 8 9 8 9 FAIL lab_sea |
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dimitri |
1.1.2.2 |
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Instructions for generating 1-CPU and 2-CPU executables |
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======================================================= |
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Generating 1-CPU executable: |
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dimitri |
1.1.2.3 |
cd verification/lab_sea/input |
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dimitri |
1.1.2.2 |
ln -sf ../code/SIZE.h . |
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ln -sf ../code/CPP_EEOPTIONS.h . |
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dimitri |
1.1.2.3 |
ln -sf ../code/CPP_OPTIONS.NOEXF.h CPP_OPTIONS.h |
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rm -f SEAICE_OPTIONS.h |
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dimitri |
1.1.2.2 |
../../../tools/genmake -makefile |
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==> on alhena use: |
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../../../tools/genmake -platform=o2k_noopt -makefile |
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make clean |
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make depend |
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make |
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mv mitgcmuv mitgcmuv_1 |
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dimitri |
1.1.2.3 |
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Generating 1-CPU executable with SEAICE_EXTERNAL_FORCING: |
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cd ../../../verification/lab_sea/input |
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ln -sf ../code/SIZE.h . |
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ln -sf ../code/CPP_EEOPTIONS.h . |
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ln -sf ../code/CPP_OPTIONS.h . |
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ln -sf ../code/ECCO_CPPOPTIONS.h . |
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ln -sf ../code/SEAICE_OPTIONS.h . |
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../../../tools/genmake -makefile |
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==> on alhena use: |
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../../../tools/genmake -platform=o2k_noopt -makefile |
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make clean |
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make depend |
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make |
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mv mitgcmuv mitgcmuv_exf_forcing |
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dimitri |
1.1.2.7 |
1-CPU executable with SEAICE_EXTERNAL_FORCING, without READ_EVAP |
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cd ../../../verification/lab_sea/input |
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ln -sf ../code/SIZE.h . |
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ln -sf ../code/CPP_EEOPTIONS.h . |
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ln -sf ../code/CPP_OPTIONS.h . |
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ln -sf ../code/ECCO_CPPOPTIONS.BULK.h ECCO_CPPOPTIONS.h |
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ln -sf ../code/SEAICE_OPTIONS.h . |
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../../../tools/genmake -makefile |
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==> on alhena use: |
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../../../tools/genmake -platform=o2k_noopt -makefile |
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make clean |
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make depend |
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make |
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mv mitgcmuv mitgcmuv_compute_evap |
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dimitri |
1.1.2.3 |
Generating 1-CPU executable with SEAICE_EXTERNAL_FLUXES: |
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cd ../../../verification/lab_sea/input |
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ln -sf ../code/SIZE.h . |
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ln -sf ../code/CPP_EEOPTIONS.h . |
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ln -sf ../code/CPP_OPTIONS.h . |
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ln -sf ../code/ECCO_CPPOPTIONS.BULK.h ECCO_CPPOPTIONS.h |
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ln -sf ../code/SEAICE_OPTIONS.EXF_FLUXES.h SEAICE_OPTIONS.h |
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../../../tools/genmake -makefile |
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==> on alhena use: |
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../../../tools/genmake -platform=o2k_noopt -makefile |
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make clean |
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make depend |
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make |
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mv mitgcmuv mitgcmuv_exf_fluxes |
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dimitri |
1.1.2.2 |
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Generating 2-CPU executable: |
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cd ../../../verification/lab_sea/input |
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dimitri |
1.1.2.3 |
ln -sf ../code/SIZE.2x1.h SIZE.h |
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ln -sf ../code/CPP_EEOPTIONS.MPI.h CPP_EEOPTIONS.h |
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ln -sf ../code/CPP_OPTIONS.NOEXF.h CPP_OPTIONS.h |
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rm -f SEAICE_OPTIONS.h |
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dimitri |
1.1.2.2 |
../../../tools/genmake -mpi -makefile |
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==> on alhena for comparison purposes use: |
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../../../tools/genmake -mpi -platform=o2k_noopt -makefile |
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==> on alhena for fast execution use: |
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../../../tools/genmake -mpi -platform=o2k -makefile |
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make clean |
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heimbach |
1.1.2.1 |
make depend |
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make |
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dimitri |
1.1.2.2 |
mv mitgcmuv mitgcmuv_2x1 |
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Instructions for running Experiment 1 |
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===================================== |
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heimbach |
1.1.2.1 |
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dimitri |
1.1.2.4 |
This is a 1-cpu, 10-hour integration used to make sure that all |
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the files are available and that the sea-ice model compiles and |
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runs. The reading of atmospheric forcing files and the computation |
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of open-water bulk fluxes are carried out within pkg/seaice. |
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dimitri |
1.1.2.2 |
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To run Experiment 1: |
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cd ../../../verification/lab_sea/input |
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dimitri |
1.1.2.3 |
ln -sf DATA.10hours data |
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ln -sf DATA.SEAICE.adi data.seaice |
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dimitri |
1.1.2.2 |
mitgcmuv_1 >&! output.txt |
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heimbach |
1.1.2.1 |
mkdir exp1 |
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mv *tave.0000000010.data exp1 |
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dimitri |
1.1.2.2 |
Use matlab script lookat_exp1.m to compare the output |
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dimitri |
1.1.2.3 |
of exp1 with that from release1_p10 sea-ice code: |
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dimitri |
1.1.2.2 |
cd ../../../verification/lab_sea/matlab |
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heimbach |
1.1.2.1 |
matlab |
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lookat_exp1 |
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dimitri |
1.1.2.2 |
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heimbach |
1.1.2.1 |
Instructions for running Experiment 2 |
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===================================== |
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This is a 1-cpu test of the LSR solver. The solution is |
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compared to that of experiment 1, which used the ADI solver. |
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dimitri |
1.1.2.2 |
To run Experiment 2: |
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cd ../../../verification/lab_sea/input |
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dimitri |
1.1.2.3 |
ln -sf DATA.10hours data |
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ln -sf DATA.SEAICE.lsr data.seaice |
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dimitri |
1.1.2.2 |
mitgcmuv_1 >&! output.txt |
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heimbach |
1.1.2.1 |
mkdir exp2 |
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mv *tave.0000000010.data exp2 |
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dimitri |
1.1.2.2 |
Use matlab script lookat_exp2.m to compare |
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heimbach |
1.1.2.1 |
the output of exp2 to that of exp1: |
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dimitri |
1.1.2.2 |
cd ../../../verification/lab_sea/matlab |
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heimbach |
1.1.2.1 |
matlab |
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lookat_exp2 |
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dimitri |
1.1.2.2 |
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heimbach |
1.1.2.1 |
Instructions for running Experiment 3 |
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===================================== |
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This is a test of periodic boundary conditions for LSR |
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and ADI solvers. The domain has a flat bottom and |
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is periodic both in the x and the y directions. |
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dimitri |
1.1.2.2 |
All forcing files are null or constant (u10m = v10m = 5 m/s). |
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heimbach |
1.1.2.1 |
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dimitri |
1.1.2.2 |
To run Experiment 3: |
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cd ../../../verification/lab_sea/input |
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dimitri |
1.1.2.3 |
ln -sf DATA.1hour data |
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ln -sf DATA.SEAICE.testadi data.seaice |
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dimitri |
1.1.2.2 |
mitgcmuv_1 >&! output.txt |
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heimbach |
1.1.2.1 |
mkdir exp3a |
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mv *tave.0000000001.data exp3a |
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dimitri |
1.1.2.3 |
ln -sf DATA.SEAICE.testlsr data.seaice |
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dimitri |
1.1.2.2 |
mitgcmuv_1 >&! output.txt |
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heimbach |
1.1.2.1 |
mkdir exp3b |
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mv *tave.0000000001.data exp3b |
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dimitri |
1.1.2.8 |
Use matlab script lookat_exp3.m to look at |
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results from exp3a and exp3b: |
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dimitri |
1.1.2.2 |
cd ../../../verification/lab_sea/matlab |
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heimbach |
1.1.2.1 |
matlab |
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lookat_exp3 |
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If the dynamic ice solvers are correct, they should converge to a |
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dimitri |
1.1.2.9 |
solution that is constant at each latitude. |
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heimbach |
1.1.2.1 |
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dimitri |
1.1.2.2 |
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heimbach |
1.1.2.1 |
Instructions for running Experiment 4 |
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===================================== |
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This is a 2-cpu, 10-hour integration used to test |
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tile edges for sea-ice dynamic solvers. |
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dimitri |
1.1.2.2 |
To run Experiment 4: |
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cd ../../../verification/lab_sea/input |
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dimitri |
1.1.2.3 |
ln -sf DATA.10hours data |
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ln -sf DATA.SEAICE.adi data.seaice |
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heimbach |
1.1.2.1 |
mpirun -np 2 mitgcmuv_2x1 |
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mkdir exp4 |
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mv *tave.0000000010.data exp4 |
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Use the matlab script lookat_exp4.m to compare |
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the 2-cpu output to that of exp1: |
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dimitri |
1.1.2.2 |
cd ../../../verification/lab_sea/matlab |
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heimbach |
1.1.2.1 |
matlab |
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lookat_exp4 |
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The inaccuracy at the tile boundary can be decreased by increasing |
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NPSEUDO in data.seaice at the expense of computation time. |
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Also as sea-ice ages (thickens) the difference at the tiles becomes |
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increasingly small. For solver pkg/seaice/adi.F a value of NPSEUDO=10 |
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appears adequate for forward integrations but cannot be used for sea-ice |
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dimitri |
1.1.2.9 |
adjoint model. With NPSEUDO=300 or greater, the tile disappears, but the |
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computational cost is very large (11 times that of teh forward model). |
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heimbach |
1.1.2.1 |
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Instructions for running Experiment 5 |
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===================================== |
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This is a 2-cpu, 2-year, test integration. It illustrates |
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dimitri |
1.1.2.2 |
convention used by seaice_get_forcing.F for multi-year forcing. |
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heimbach |
1.1.2.1 |
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dimitri |
1.1.2.2 |
To run Experiment 5: |
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cd ../../../verification/lab_sea/input |
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dimitri |
1.1.2.3 |
ln -sf DATA.2years data |
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ln -sf DATA.SEAICE.adi data.seaice |
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dimitri |
1.1.2.2 |
ln -sf evap.labsea1979 evap.labsea1980 |
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ln -sf flo.labsea1979 flo.labsea1980 |
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ln -sf fsh.labsea1979 fsh.labsea1980 |
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heimbach |
1.1.2.1 |
ln -sf prate.labsea1979 prate.labsea1980 |
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dimitri |
1.1.2.2 |
ln -sf qa.labsea1979 qa.labsea1980 |
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ln -sf tair.labsea1979 tair.labsea1980 |
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ln -sf u10m.labsea79 u10m.labsea80 |
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ln -sf v10m.labsea79 v10m.labsea80 |
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heimbach |
1.1.2.1 |
mpirun -np 2 mitgcmuv_2x1 |
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dimitri |
1.1.2.2 |
Use the matlab script lookat_exp5.m to compare |
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heimbach |
1.1.2.1 |
the 2-cpu output to SMMR-SSM/I data: |
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dimitri |
1.1.2.2 |
cd ../../../verification/lab_sea/matlab |
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heimbach |
1.1.2.1 |
matlab |
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lookat_exp5 |
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Disclaimer: |
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The comparison here is just for fun, not really supposed |
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to look anything like the data. |
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Otherwise it would put a lot of people out of business :-) |
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Instructions for running Experiment 6 |
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===================================== |
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This is a 1-cpu test of sea-ice thermodynamics (no dynamics). |
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The solution is compared to that of experiment 1. |
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dimitri |
1.1.2.2 |
To run Experiment 6: |
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cd ../../../verification/lab_sea/input |
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dimitri |
1.1.2.3 |
ln -sf DATA.10hours data |
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ln -sf DATA.SEAICE.nodynamics data.seaice |
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dimitri |
1.1.2.2 |
mitgcmuv_1 >&! output.txt |
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heimbach |
1.1.2.1 |
mkdir exp6 |
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mv *tave.0000000010.data exp6 |
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Use the matlab script lookat_exp6.m to compare |
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dimitri |
1.1.2.2 |
the output of exp6 to that of exp1: |
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heimbach |
1.1.2.1 |
cd ../verification/lab_sea/matlab |
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matlab |
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lookat_exp6 |
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dimitri |
1.1.2.2 |
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Instructions for running Experiment 7 |
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===================================== |
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This is a 2-cpu, 10-hour integration used to test |
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tile edges for sea-ice thermodynamics (no dynamics). |
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2-CPU executable from experiment 4 is required. |
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To run Experiment 7: |
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cd ../../../verification/lab_sea/input |
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dimitri |
1.1.2.3 |
ln -sf DATA.10hours data |
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ln -sf DATA.SEAICE.nodynamics data.seaice |
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dimitri |
1.1.2.2 |
mpirun -np 2 mitgcmuv_2x1 |
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mkdir exp7 |
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mv *tave.0000000010.data exp7 |
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Use the matlab script lookat_exp7.m to compare |
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the output of exp7 to that of exp6: |
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cd ../verification/lab_sea/matlab |
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matlab |
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lookat_exp7 |
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dimitri |
1.1.2.3 |
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Instructions for running Experiment 8 |
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===================================== |
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This is the default experiment which is executed by |
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verification/testscript. It is a 1-cpu, 10-hour integration |
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used to test CPP option SEAICE_EXTERNAL_FORCING. Atmospheric |
| 316 |
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state is read-in using pkg/exf, rather than pkg/seaice routines. |
| 317 |
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This experiment uses pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf. |
| 318 |
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| 319 |
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To run Experiment 8: |
| 320 |
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cd ../../../verification/lab_sea/input |
| 321 |
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ln -sf DATA.10hours_exf data |
| 322 |
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ln -sf DATA.SEAICE.adi_exf data.seaice |
| 323 |
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mitgcmuv_exf_forcing >&! output.txt |
| 324 |
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mkdir exp8 |
| 325 |
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mv *tave.0000000010.data exp8 |
| 326 |
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| 327 |
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Use matlab script lookat_exp8.m to compare |
| 328 |
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the output of exp8 to that of exp1: |
| 329 |
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cd ../../../verification/lab_sea/matlab |
| 330 |
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matlab |
| 331 |
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lookat_exp8 |
| 332 |
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| 333 |
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|
| 334 |
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Instructions for running Experiment 9 |
| 335 |
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|
===================================== |
| 336 |
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|
| 337 |
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This is a 1-cpu, 10-hour integration used to test CPP option |
| 338 |
dimitri |
1.1.2.4 |
SEAICE_EXTERNAL_FLUXES. Both the atmospheric state and the |
| 339 |
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open-water surface fluxes are provided by pkg/exf. |
| 340 |
dimitri |
1.1.2.3 |
|
| 341 |
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To run Experiment 9: |
| 342 |
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cd ../../../verification/lab_sea/input |
| 343 |
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ln -sf DATA.10hours_exf data |
| 344 |
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ln -sf DATA.SEAICE.adi_exf data.seaice |
| 345 |
|
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mitgcmuv_exf_fluxes >&! output.txt |
| 346 |
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mkdir exp9 |
| 347 |
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mv *tave.0000000010.data exp9 |
| 348 |
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|
| 349 |
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Use matlab script lookat_exp9.m to compare |
| 350 |
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the output of exp9 to that of exp8: |
| 351 |
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cd ../../../verification/lab_sea/matlab |
| 352 |
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matlab |
| 353 |
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lookat_exp9 |
| 354 |
dimitri |
1.1.2.7 |
|
| 355 |
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|
| 356 |
|
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Instructions for running Experiment 10 |
| 357 |
|
|
====================================== |
| 358 |
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|
| 359 |
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This is a 1-cpu, 10-hour integration similar to exp8, but |
| 360 |
|
|
with bulk formula computation of evaporation fields. |
| 361 |
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|
| 362 |
|
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To run Experiment 10: |
| 363 |
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cd ../../../verification/lab_sea/input |
| 364 |
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ln -sf DATA.10hours_exf data |
| 365 |
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ln -sf DATA.SEAICE.adi_exf data.seaice |
| 366 |
|
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mitgcmuv_compute_evap >&! output.txt |
| 367 |
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mkdir exp10 |
| 368 |
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mv *tave.0000000010.data exp10 |
| 369 |
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| 370 |
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Use matlab script lookat_exp10.m to compare |
| 371 |
|
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the output of exp10 to that of exp8: |
| 372 |
|
|
cd ../../../verification/lab_sea/matlab |
| 373 |
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matlab |
| 374 |
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lookat_exp10 |
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