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revision 1.2 by heimbach, Tue Nov 12 20:54:28 2002 UTC revision 1.18 by jmc, Mon Mar 10 01:35:17 2014 UTC
# Line 3  Example: Labrador Sea Region with Sea-Ic Line 3  Example: Labrador Sea Region with Sea-Ic
3    
4  This example sets up a small (20x16x23) Labrador Sea experiment  This example sets up a small (20x16x23) Labrador Sea experiment
5  coupled to a dynamic thermodynamic sea-ice model.  coupled to a dynamic thermodynamic sea-ice model.
6  A brief description of the sea-ice model is in "doc/seaice.ps".  A brief description of the sea-ice model is in "seaice.ps".
7    
8  The domain of integration spans 280E to 320E and 46N to 78N.  The domain of integration spans 280E to 320E and 46N to 78N.
9  Horizontal grid spacing is 2 degrees.  Horizontal grid spacing is 2 degrees.
# Line 20  Surface salinity relaxation is to the mo Line 20  Surface salinity relaxation is to the mo
20    
21  Forcing files are a 1979-1999 monthly climatology computed from the  Forcing files are a 1979-1999 monthly climatology computed from the
22  NCEP reanalysis (see pkg/seaice/SEAICE_FFIELDS.h for units and signs)  NCEP reanalysis (see pkg/seaice/SEAICE_FFIELDS.h for units and signs)
23    gairxFile      = 'u10m.labsea79'    # 10-m zonal wind    uwindFile      = 'u10m.labsea79'    # 10-m zonal wind
24    gairyFile      = 'v10m.labsea79'    # 10-m meridional wind    vwindFile      = 'v10m.labsea79'    # 10-m meridional wind
25    tairFile       = 'tair.labsea1979'  # 2-m air temperature    atempFile      = 'tair.labsea1979'  # 2-m air temperature
26    qaFile         = 'qa.labsea1979'    # 2-m specific humidity    aqhFile        = 'qa.labsea1979'    # 2-m specific humidity
27    floFile        = 'flo.labsea1979'   # longwave radiation    lwdownFile     = 'flo.labsea1979'   # downward longwave radiation
28    fshFile        = 'fsh.labsea1979'   # shortwave radiation    swdownFile     = 'fsh.labsea1979'   # downward shortwave radiation
29    rainFile       = 'prate.labsea1979' # precipitation    precipFile     = 'prate.labsea1979' # precipitation
   evapFile       = 'evap.labsea1979'  # evaporation  
30    
31    The experiment uses pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf.
32    The test is a 1-cpu, 10-hour integration.   Both the atmospheric
33    state and the open-water surface fluxes are provided by pkg/exf.
34    
35  Instructions for running Experiment 1  More pkg/seaice test experiments, configured for low and
36  =====================================  high-resolution global cube-sphere domains are described
37    in MITgcm_contrib/high_res_cube/README_ice.
 This is a 1-cpu, 10-hour integration used to make sure that all the  
 files are available and that the model compiles and integrates.  
   
 To configure and compile the code:  
   cd MITgcmUV  
   mkdir bin exe  
   cd bin  
   ln -sf ../verification/lab_sea/code/SIZE.h .  
   ln -sf ../verification/lab_sea/code/CPP_OPTIONS.h .  
   ln -sf ../verification/lab_sea/code/CPP_EEOPTIONS.h .  
   ../tools/genmake -makefile  
   make depend  
   make  
   
 To run:  
   cd ../exe  
   cp ../verification/lab_sea/input/* .  
   ln -sf data.10hours data  
   ln -sf data.seaice.adi data.seaice  
   mv mitgcmuv mitgcmuv1  
   mitgcmuv1 >&! output.txt  
   mkdir exp1  
   mv *tave.0000000010.data exp1  
   
 There is comparison output in:  
   diff output.txt ../verification/lab_sea/results/output.txt | more  
   
 Use the matlab script lookat_exp1.m to compare the output  
 of exp1 with that from release1_beta1 sea-ice code:  
   cd ../verification/lab_sea/matlab  
   matlab  
   lookat_exp1  
   
 Instructions for running Experiment 2  
 =====================================  
   
 This is a 1-cpu test of the LSR solver.  The solution is  
 compared to that of experiment 1, which used the ADI solver.  
 1-CPU executable from experiment 1 is required.  
   
 To run:  
   cd ../exe  
   cp ../verification/lab_sea/input/* .  
   ln -sf data.10hours data  
   ln -sf data.seaice.lsr data.seaice  
   mitgcmuv1 >&! output.txt  
   mkdir exp2  
   mv *tave.0000000010.data exp2  
   
 Use the matlab script lookat_exp2.m to compare  
 the output of exp2 to that of exp1:  
   cd ../verification/lab_sea/matlab  
   matlab  
   lookat_exp2  
38    
39  Instructions for running Experiment 3  Using testscript to test sea-ice code
40  =====================================  =====================================
41    
42  This is a test of periodic boundary conditions for LSR  Running the testscript experiment:
43  and ADI solvers.  The domain has a flat bottom and    cd MITgcm/verification
44  is periodic both in the x and the y directions.    ./testreport -t lab_sea [-of my_platform_optionFile]
 All forcing files are null or constant  
 (u10m = v10m = 5 m/s).  
45    
46  1-CPU executable from experiment 1 is required.  Note that fairly large differences in accuracy occur across different
47    platforms.  For example, testscript comparisons between g77 (Linux)
48    and f77 (SGI) generated output gives:
49    
50  To run:                  T           S           U           V
51    cd ../exe  C D M    c        m  s        m  s        m  s        m  s
52    cp ../verification/lab_sea/input/* .  n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
53    ln -sf data.1hour data  f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
54    ln -sf data.seaice.testadi data.seaice  g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
   mitgcmuv1 >&! output.txt  
   mkdir exp3a  
   mv *tave.0000000001.data exp3a  
   ln -sf data.seaice.testlsr data.seaice  
   mitgcmuv1 >&! output.txt  
   mkdir exp3b  
   mv *tave.0000000001.data exp3b  
   
 Use the matlab script lookat_exp3.m to compare  
 the output of exp2 to that of exp1:  
   cd ../verification/lab_sea/matlab  
   matlab  
   lookat_exp3  
55    
56  If the dynamic ice solvers are correct, they should converge to a  Y Y Y Y  8 10  9 11 10  9 11 13 10  9  8  8  9  8  9  8  9 FAIL  lab_sea
 constant solution.  The tests above show that both the ADI and the LSR  
 solver are unable to handle periodic domains and therefore that they  
 cannot be "correctly" parallelized.  
57    
58  Instructions for running Experiment 4  Instructions for generating and running a 1-CPU experiment
59  =====================================  ==========================================================
60    
61  This is a 2-cpu, 10-hour integration used to test    cd MITgcm/verification/lab_sea
 tile edges for sea-ice dynamic solvers.  
62    
63  To configure and compile the code:  Configure and compile the code:
64    cd ../bin    cd build
65    rm -rf *.f    ../../../tools/genmake2 -mods ../code [-of my_platform_optionFile]
   rm -rf *.o  
   ln -sf ../verification/lab_sea/code/SIZE_2x1.h SIZE.h  
   ln -sf ../verification/lab_sea/code/CPP_OPTIONS.h .  
   ln -sf ../verification/lab_sea/code/CPP_EEOPTIONS_MPI.h CPP_EEOPTIONS.h  
   ../tools/genmake -mpi -makefile  
      ( on alhena use: ../tools/genmake -mpi -platform=o2k -makefile )  
66    make depend    make depend
67    make    make
68      cd ..
69    
70  To run:  To run:
71    cd ../exe    cd run
72    cp ../verification/lab_sea/input/* .    ln -s ../input/* .
73    ln -sf data.10hours data    ln -s ../build/mitgcmuv .
74    ln -sf data.seaice.adi data.seaice    ./mitgcmuv > output.txt
75    mv mitgcmuv mitgcmuv_2x1    cd ..
   mpirun -np 2 mitgcmuv_2x1  
   mkdir exp4  
   mv *tave.0000000010.data exp4  
   
 Use the matlab script lookat_exp4.m to compare  
 the 2-cpu output to that of exp1:  
   cd ../verification/lab_sea/matlab  
   matlab  
   lookat_exp4  
   
 The inaccuracy at the tile boundary can be decreased by increasing  
 NPSEUDO in data.seaice at the expense of computation time.  
 Also as sea-ice ages (thickens) the difference at the tiles becomes  
 increasingly small.  For solver pkg/seaice/adi.F a value of NPSEUDO=10  
 appears adequate for forward integrations but cannot be used for sea-ice  
 adjoint model.  Work is underway to fix this problem.  
   
   
 Instructions for running Experiment 5  
 =====================================  
76    
77  This is a 2-cpu, 2-year, test integration.  It illustrates  There is comparison output in the directory:
78  convention used for forcing data files by seaice_get_forcing.F.    results/output.txt
79    
80  To run:  Use matlab script lookat_ice.m to compare the output
81    cd ../exe   with that from checkpoint51f sea-ice code:
82    cp ../verification/lab_sea/input/* .    cd ../../../verification/lab_sea/matlab
   cp eedata_mpi eedata  
   ln -sf data.2years data  
   ln -sf data.seaice.adi data.seaice  
   ln -sf evap.labsea1979  evap.labsea1980    
   ln -sf flo.labsea1979   flo.labsea1980    
   ln -sf fsh.labsea1979   fsh.labsea1980    
   ln -sf prate.labsea1979 prate.labsea1980  
   ln -sf qa.labsea1979    qa.labsea1980      
   ln -sf tair.labsea1979  tair.labsea1980    
   ln -sf u10m.labsea79    u10m.labsea80      
   ln -sf v10m.labsea79    v10m.labsea80      
   mpirun -np 2 mitgcmuv_2x1  
   
 Use the matlab script lookat_exp3.m to compare  
 the 2-cpu output to SMMR-SSM/I data:  
   cd ../verification/lab_sea/matlab  
83    matlab    matlab
84    lookat_exp5    lookat_ice
85    
86  Disclaimer:  Instructions for generating and running a 2-CPU experiment
87  The comparison here is just for fun, not really supposed  ==========================================================
 to look anything like the data.  
 Otherwise it would put a lot of people out of business :-)  
88    
89  Instructions for running Experiment 6    cd MITgcm/verification/lab_sea
 =====================================  
90    
91  This is a 1-cpu test of sea-ice thermodynamics (no dynamics).  Configure and compile the code:
92  The solution is compared to that of experiment 1.    cd build
93  1-CPU executable from experiment 1 is required.    ../../../tools/genmake2 -mpi -mods ../code [-of my_platform_optionFile]
94      ln -s ../code/SIZE.h_mpi SIZE.h
95      make depend
96      make
97      cd ..
98    
99  To run:  To run:
100    cd ../exe    cd run
101    cp ../verification/lab_sea/input/* .    ln -s ../input/* .
102    ln -sf data.10hours data    mpirun -np 2 ../build/mitgcmuv
103    ln -sf data.seaice.nodynamics data.seaice    cd ..
104    mitgcmuv1 >&! output.txt  
105    mkdir exp6  Instructions for testing useExfYearlyFields (Note: might not be up-to-date)
106    mv *tave.0000000010.data exp6  ===========================================
107    
108  Use the matlab script lookat_exp6.m to compare    cd MITgcm/verification/lab_sea/build
109  the output of exp2 to that of exp1:    \rm *
110    cd ../verification/lab_sea/matlab    \cp ../code/* .
111    matlab    sed 's/undef EXF_V/define EXF_V/' \
112    lookat_exp6        ../../../pkg/exf/EXF_OPTIONS.h > EXF_OPTIONS.h
113      ../../../tools/genmake2
114      make depend
115      make -j
116      cd ../run
117      \rm *
118      \cp ../input/* .
119      \mv v10m.labsea1979 v10m.labsea_1979
120      \mv u10m.labsea1979 u10m.labsea_1979
121      \mv flo.labsea1979 flo.labsea_1979
122      \mv prate.labsea1979 prate.labsea_1979
123      \mv tair.labsea1979 tair.labsea_1979
124      \mv fsh.labsea1979 fsh.labsea_1979
125      \mv qa.labsea1979 qa.labsea_1979
126      \mv SSS_monthly.labsea1979 SSS_monthly.labsea_1979
127      \ln -sf v10m.labsea_1979 v10m.labsea_1978
128      \ln -sf u10m.labsea_1979 u10m.labsea_1978
129      \ln -sf flo.labsea_1979 flo.labsea_1978
130      \ln -sf prate.labsea_1979 prate.labsea_1978
131      \ln -sf tair.labsea_1979 tair.labsea_1978
132      \ln -sf fsh.labsea_1979 fsh.labsea_1978
133      \ln -sf qa.labsea_1979 qa.labsea_1978
134      \ln -sf SSS_monthly.labsea_1979 SSS_monthly.labsea_1978
135      \ln -sf v10m.labsea_1979 v10m.labsea_1980
136      \ln -sf u10m.labsea_1979 u10m.labsea_1980
137      \ln -sf flo.labsea_1979 flo.labsea_1980
138      \ln -sf prate.labsea_1979 prate.labsea_1980
139      \ln -sf tair.labsea_1979 tair.labsea_1980
140      \ln -sf fsh.labsea_1979 fsh.labsea_1980
141      \ln -sf qa.labsea_1979 qa.labsea_1980
142      \ln -sf SSS_monthly.labsea_1979 SSS_monthly.labsea_1980
143      \mv data.exf_YearlyFields data.exf
144      \mv data_YearlyFields data
145      sed 's/tics = .TRUE./tics = .FALSE./' ../input/data.pkg > data.pkg
146      ../build/mitgcmuv >& output.txt &
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