/[MITgcm]/MITgcm/pkg/seaice/SEAICE_OPTIONS.h
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revision 1.38 by dimitri, Mon Mar 1 23:46:13 2010 UTC revision 1.60 by gforget, Sat Feb 11 03:35:01 2012 UTC
# Line 1  Line 1 
1  C $Header$  C $Header$
2  C $Name$  C $Name$
3    
4  C     /==========================================================\  C     *==========================================================*
5  C     | SEAICE_OPTIONS.h                                         |  C     | SEAICE_OPTIONS.h
6  C     | o CPP options file for sea ice package.                  |  C     | o CPP options file for sea ice package.
7  C     |==========================================================|  C     *==========================================================*
8  C     | Use this file for selecting options within the sea ice   |  C     | Use this file for selecting options within the sea ice
9  C     | package.                                                 |  C     | package.
10  C     \==========================================================/  C     *==========================================================*
11    
12  #ifndef SEAICE_OPTIONS_H  #ifndef SEAICE_OPTIONS_H
13  #define SEAICE_OPTIONS_H  #define SEAICE_OPTIONS_H
14  #include "PACKAGES_CONFIG.h"  #include "PACKAGES_CONFIG.h"
15  #include "CPP_OPTIONS.h"  #include "CPP_OPTIONS.h"
16    
17    #ifdef ALLOW_SEAICE
18    C     Package-specific Options & Macros go here
19    
20  C--   Write "text-plots" of certain fields in STDOUT for debugging.  C--   Write "text-plots" of certain fields in STDOUT for debugging.
21  #undef SEAICE_DEBUG  #undef SEAICE_DEBUG
22    
# Line 40  C     Therefore it is not possible to sw Line 43  C     Therefore it is not possible to sw
43  C     in the middle of an integration.  C     in the middle of an integration.
44  #undef SEAICE_MULTICATEGORY  #undef SEAICE_MULTICATEGORY
45    
46  C--   By default the freezing point of water is set to the value of  C--   Use the Old version of seaice_growth (close to cvs version 1.70)
47  C     the parameter SEAICE_freeze (=-1.96 by default). To use a  C     otherwise, use the merged version (with some of Ian Fenty s code)
48  C     simple linear dependence of the freezing point on salinity,  #define SEAICE_GROWTH_LEGACY
49  C     set the following flag (pressure is assumed to have no effect,  
50  C     which is a good assumption for the top 20 meters). With this  C--   Since the missing sublimation term is now included
51  C     option defined the parameter SEAICE_freeze has no effect.  C     this flag is needed for backward compatibility
52  #undef SEAICE_VARIABLE_FREEZING_POINT  #undef SEAICE_DISABLE_SUBLIM
53    
54  C--   Allow SEAICEuseFlooding, which converts snow to ice if submerged.  C--   options only available in the merged version
55  #define ALLOW_SEAICE_FLOODING  #ifndef SEAICE_GROWTH_LEGACY
56    C-    to ensure heat conservation in the coupled ocean-seaice system
57    # undef SEAICE_HEAT_CONSERV_FIX
58    C-    to preclude infinitesimal ice concentrations:
59    # undef ALLOW_PRECLUDE_INFINITESIMAL_AREA
60    #endif
61    
62    C--   The freezing point of water is a simple linear dependence to salinity.
63    C     The flag below is now obsolete, but kept to ease the transition
64    C     from the old constant freezing point default (see seaice_check.F).
65    #define SEAICE_VARIABLE_FREEZING_POINT
66    
67  C--   By default sea ice is fresh.  Set following flag for salty ice.  C--   By default sea ice is fresh.  Set following flag for salty ice.
68  #undef SEAICE_SALINITY  #undef SEAICE_VARIABLE_SALINITY
69    
70  C--   Track sea ice age.  C--   Tracers of ice and/or ice cover.
71  #undef SEAICE_AGE  #undef ALLOW_SITRACER
72    #ifdef ALLOW_SITRACER
73    C--   To try avoid 'spontaneous generation' of tracer maxima by advdiff.
74    # define ALLOW_SITRACER_ADVCAP
75    #endif
76    
77  C--   By default the seaice model is discretized on a B-Grid (for  C--   By default the seaice model is discretized on a B-Grid (for
78  C     historical reasons). Define the following flag to use a new  C     historical reasons). Define the following flag to use a new
79  C     (not thoroughly) test version on a C-grid  C     (not thoroughly) test version on a C-grid
80  #define SEAICE_CGRID  #define SEAICE_CGRID
81    
82  C--   Only for the C-grid version it is possible to  C--   Only for the C-grid version it is possible to
83  #ifdef SEAICE_CGRID  #ifdef SEAICE_CGRID
84  C     enable EVP code by defining the following flag  C     enable EVP code by defining the following flag
85  # define SEAICE_ALLOW_EVP  # define SEAICE_ALLOW_EVP
# Line 84  C--   By default for B-grid dynamics sol Line 101  C--   By default for B-grid dynamics sol
101  C     indirectly via geostrophic velocities. Define following CPP  C     indirectly via geostrophic velocities. Define following CPP
102  C     in order to use ETAN instead.  C     in order to use ETAN instead.
103  # define EXPLICIT_SSH_SLOPE  # define EXPLICIT_SSH_SLOPE
104    C--   Defining this flag turns on a FV-discretization of the B-grid LSOR
105    C     solver. It is smoother and includes all metric terms, similar to the
106    C     C-grid solver. It is here for completeness, but its usefulness is
107    C     unclear.
108    # undef SEAICE_LSRBNEW
109  #endif /* SEAICE_CGRID */  #endif /* SEAICE_CGRID */
110    
111  C--   When set use MAX_HEFF to cap sea ice thickness in seaice_growth  C--   When set use MAX_HEFF to cap sea ice thickness in seaice_growth
112  #undef SEAICE_CAP_HEFF  #undef SEAICE_CAP_HEFF
113    C--   When set limit the Ice-Loading to mass of 1/5 of Surface ocean grid-box
114    #undef SEAICE_CAP_ICELOAD
115  C--   When set use SEAICE_clipVelocties = .true., to clip U/VICE at 40cm/s,  C--   When set use SEAICE_clipVelocties = .true., to clip U/VICE at 40cm/s,
116  C--   not recommended  C--   not recommended
117  #undef SEAICE_ALLOW_CLIPVELS  #undef SEAICE_ALLOW_CLIPVELS
118    C--   When set cap the sublimation latent heat flux in solve4temp
119    C     according to the available amount of ice+snow. Otherwise this
120    C     term is treated like all of the others -- residuals heat and
121    C     fw stocks are passed to the ocean at the end of seaice_growth
122    C     in a conservative manner. SEAICE_CAP_SUBLIM is not needed
123    C     as of now, but kept just in case.
124    #undef SEAICE_CAP_SUBLIM
125    
126    C     enable free drift code
127    #undef SEAICE_ALLOW_FREEDRIFT
128    
129    #endif /* ALLOW_SEAICE */
130  #endif /* SEAICE_OPTIONS_H */  #endif /* SEAICE_OPTIONS_H */
131    
132  CEH3 ;;; Local Variables: ***  CEH3 ;;; Local Variables: ***
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