/[MITgcm]/MITgcm/pkg/seaice/SEAICE_OPTIONS.h
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revision 1.8 by dimitri, Mon Nov 24 04:39:48 2003 UTC revision 1.13 by mlosch, Fri Jan 27 20:18:37 2006 UTC
# Line 1  Line 1 
1  C $Header$  C $Header$
 C $Name$  
2    
3  C     /==========================================================\  C     /==========================================================\
4  C     | SEAICE_OPTIONS.h                                         |  C     | SEAICE_OPTIONS.h                                         |
# Line 12  C     \================================= Line 11  C     \=================================
11  #ifndef SEAICE_OPTIONS_H  #ifndef SEAICE_OPTIONS_H
12  #define SEAICE_OPTIONS_H  #define SEAICE_OPTIONS_H
13  #include "PACKAGES_CONFIG.h"  #include "PACKAGES_CONFIG.h"
 #ifdef ALLOW_SEAICE  
   
14  #include "CPP_OPTIONS.h"  #include "CPP_OPTIONS.h"
15    
16  C--   Write "text-plots" of certain fields in STDOUT for debugging.  C--   Write "text-plots" of certain fields in STDOUT for debugging.
# Line 32  C     SEAICE_EXTERNAL_FORCING is defined Line 29  C     SEAICE_EXTERNAL_FORCING is defined
29  C     are defined and provided by an external package.  At present this  C     are defined and provided by an external package.  At present this
30  C     option is hardwired for pkg/exf and the variables are passed using  C     option is hardwired for pkg/exf and the variables are passed using
31  C     include file exf_fields.h.  C     include file exf_fields.h.
32  #undef SEAICE_EXTERNAL_FORCING  #define SEAICE_EXTERNAL_FORCING
33  #ifdef SEAICE_EXTERNAL_FORCING  #ifdef SEAICE_EXTERNAL_FORCING
34  #include "EXF_OPTIONS.h"  #include "EXF_OPTIONS.h"
35  #endif /* SEAICE_EXTERNAL_FORCING */  #endif /* SEAICE_EXTERNAL_FORCING */
# Line 42  C     formulae to compute fluxes (fu, fv Line 39  C     formulae to compute fluxes (fu, fv
39  C     open-ocean.  When this flag is set, these variables are computed  C     open-ocean.  When this flag is set, these variables are computed
40  C     in a separate external package, for example, pkg/exf, and then  C     in a separate external package, for example, pkg/exf, and then
41  C     modified for sea-ice effects by pkg/seaice.  C     modified for sea-ice effects by pkg/seaice.
42  #undef SEAICE_EXTERNAL_FLUXES  #define SEAICE_EXTERNAL_FLUXES
43    
44  C--   By default, the sea-ice package uses 2-category thermodynamics.  C--   By default, the sea-ice package uses 2-category thermodynamics.
45  C     When this flag is set, an 8-category calculation of ice  C     When this flag is set, an 8-category calculation of ice
46  C     thermodynamics is carried out in groatb.F  C     thermodynamics is carried out in groatb.F
47  C     !!! Note the pickup_seaice.* generated by this option differ !!!  C     Note the pickup_seaice.* generated by this option differ
48  C     !!! from those generated with the default 2-category model.  !!!  C     from those generated with the default 2-category model.
49  C     !!! Therefore it is not possible to switch between the two   !!!  C     Therefore it is not possible to switch between the two
50  C     !!! in the middle of an integration.                         !!!  C     in the middle of an integration.
51  #undef SEAICE_MULTILEVEL  #undef SEAICE_MULTILEVEL
52    
53  #endif /* ALLOW_SEAICE */  C--   By default cdm wind stress under sea-ice is set to the
54    C     same value as it would be if there was no sea-ice.
55    C     This is a placeholder until a more physically-sensible
56    C     stable solution is developed.  Apparently ocean stress
57    C     that is based on sea-ice velocity can cause trouble in
58    C     Arctic Ocean configurations.  This temporary solution
59    C     also corresponds to that adopted by CCSM-2.  For the
60    C     adventurous user who requires ice-modified stress,
61    C     following options are available.
62    #undef SEAICE_ORIGINAL_BAD_ICE_STRESS
63    #undef SEAICE_TEST_ICE_STRESS_1
64    
65    C--   By default the freezing point of water is set to the value of
66    C     the parameter SEAICE_freeze (=-1.96 by default). To use a
67    C     simple linear dependence of the freezing point on salinity,
68    C     set the following flag (pressure is assumed to have no effect,
69    C     which is a good assumption for the top 20 meters). With this
70    C     option defined the parameter SEAICE_freeze has no effect.
71    #undef SEAICE_VARIABLE_FREEZING_POINT
72    
73  #endif /* SEAICE_OPTIONS_H */  #endif /* SEAICE_OPTIONS_H */
74    
75    CEH3 ;;; Local Variables: ***
76    CEH3 ;;; mode:fortran ***
77    CEH3 ;;; End: ***
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