/[MITgcm]/MITgcm_contrib/MPMice/beaufort/code/SEAICE_OPTIONS.h
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revision 1.3 by dimitri, Wed Dec 21 23:06:07 2011 UTC revision 1.4 by dimitri, Wed Mar 14 05:32:10 2012 UTC
# Line 1  Line 1 
1  C $Header$  C $Header$
2    
3  C     *==========================================================*  C     *==========================================================*
4  C     | SEAICE_OPTIONS.h                                         |  C     | SEAICE_OPTIONS.h
5  C     | o CPP options file for sea ice package.                  |  C     | o CPP options file for sea ice package.
6  C     *==========================================================*  C     *==========================================================*
7  C     | Use this file for selecting options within the sea ice   |  C     | Use this file for selecting options within the sea ice
8  C     | package.                                                 |  C     | package.
9  C     *==========================================================*  C     *==========================================================*
10    
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"
14  #include "CPP_OPTIONS.h"  #include "CPP_OPTIONS.h"
15    
16  #ifdef ALLOW_SEAICE  #ifdef ALLOW_SEAICE
17    C     Package-specific Options & Macros go here
18    
19  C--   Write "text-plots" of certain fields in STDOUT for debugging.  C--   Write "text-plots" of certain fields in STDOUT for debugging.
20  #undef SEAICE_DEBUG  #undef SEAICE_DEBUG
# Line 44  C--   Use the Old version of seaice_grow Line 46  C--   Use the Old version of seaice_grow
46  C     otherwise, use the merged version (with some of Ian Fenty s code)  C     otherwise, use the merged version (with some of Ian Fenty s code)
47  #undef SEAICE_GROWTH_LEGACY  #undef SEAICE_GROWTH_LEGACY
48    
49  C--   options only available in the merged version (from Ian Fenty s code)  C--   Since the missing sublimation term is now included
50  #ifndef SEAICE_GROWTH_LEGACY  C     this flag is needed for backward compatibility
51  C-    to ensure heat conservation in the coupled ocean-seaice system  #undef SEAICE_DISABLE_SUBLIM
52  #undef SEAICE_HEAT_CONSERV_FIX  
53  C-    to switch on/off open-water freezing contribution to thickness tendency:  C--   Suspected missing term in coupled ocn-ice heat budget (to be further
54  # define SEAICE_DO_OPEN_WATER_GROWTH  C     gtested)
55  C-    ifdef SEAICE_DO_OPEN_WATER_GROWTH then define SEAICE_DO_OPEN_WATER_MELT  #undef SEAICE_DISABLE_HEATCONSFIX
56  C     to also allow open-water air-sea heat fluxes melt ice  
57  # undef SEAICE_DO_OPEN_WATER_MELT  C--   The freezing point of water is a simple linear dependence to salinity.
58  C-    to switch on/off ocean heat contribution to seaice cover reduction:  C     The flag below is now obsolete, but kept to ease the transition
59  # define SEAICE_OCN_MELT_ACT_ON_AREA  C     from the old constant freezing point default (see seaice_check.F).
 C-    to preclude infinitesimal ice concentrations:  
 # undef ALLOW_PRECLUDE_INFINITESIMAL_AREA  
 #endif  
   
 C-    to use the MCPhee formula in computing ocean/ice fluxes  
 #undef MCPHEE_OCEAN_ICE_HEAT_FLUX  
   
 C--   Use the Old version of seaice_solve4temp (formerly seaice_budget_ice)  
 C     otherwise, use Ian Fenty s version  
 #undef SEAICE_SOLVE4TEMP_LEGACY  
   
 C--   By default the freezing point of water is set to the value of  
 C     the parameter SEAICE_freeze (=-1.96 by default). To use a  
 C     simple linear dependence of the freezing point on salinity,  
 C     set the following flag (pressure is assumed to have no effect,  
 C     which is a good assumption for the top 20 meters). With this  
 C     option defined the parameter SEAICE_freeze has no effect.  
60  #define SEAICE_VARIABLE_FREEZING_POINT  #define SEAICE_VARIABLE_FREEZING_POINT
61    
62  C--   Allow SEAICEuseFlooding, which converts snow to ice if submerged.  C--   The functionality of this flag has been moved to SItracer making
63  #define ALLOW_SEAICE_FLOODING  C     this flag obsolete.
   
 C--   By default sea ice is fresh.  Set following flag for salty ice.  
64  #define SEAICE_VARIABLE_SALINITY  #define SEAICE_VARIABLE_SALINITY
65    
 C--   Track sea ice age.  
 #undef SEAICE_AGE  
   
66  C--   Tracers of ice and/or ice cover.  C--   Tracers of ice and/or ice cover.
67  #undef ALLOW_SITRACER  #define ALLOW_SITRACER
68  #ifdef ALLOW_SITRACER  #ifdef ALLOW_SITRACER
69  C--   To try avoid 'spontaneous generation' of tracer maxima by advdiff.  C--   To try avoid 'spontaneous generation' of tracer maxima by advdiff.
70  # define ALLOW_SITRACER_ADVCAP  # define ALLOW_SITRACER_ADVCAP
# Line 98  C     (not thoroughly) test version on a Line 78  C     (not thoroughly) test version on a
78  C--   Only for the C-grid version it is possible to  C--   Only for the C-grid version it is possible to
79  #ifdef SEAICE_CGRID  #ifdef SEAICE_CGRID
80  C     enable EVP code by defining the following flag  C     enable EVP code by defining the following flag
81  # undef SEAICE_ALLOW_EVP  # define SEAICE_ALLOW_EVP
82  # ifdef SEAICE_ALLOW_EVP  # ifdef SEAICE_ALLOW_EVP
83  C--   When set use SEAICE_zetaMin and SEAICE_evpDampC to limit  C--   When set use SEAICE_zetaMin and SEAICE_evpDampC to limit
84  C--   viscosities from below and above in seaice_evp  C--   viscosities from below and above in seaice_evp
# Line 117  C--   By default for B-grid dynamics sol Line 97  C--   By default for B-grid dynamics sol
97  C     indirectly via geostrophic velocities. Define following CPP  C     indirectly via geostrophic velocities. Define following CPP
98  C     in order to use ETAN instead.  C     in order to use ETAN instead.
99  # define EXPLICIT_SSH_SLOPE  # define EXPLICIT_SSH_SLOPE
100  C--   Defining this flag turns on a FV-discretization of the B-grid LSOR  C--   Defining this flag turns on a FV-discretization of the B-grid LSOR
101  C     solver. It is smoother and includes all metric terms, similar to the  C     solver. It is smoother and includes all metric terms, similar to the
102  C     C-grid solver. It is here for completeness, but its usefulness is  C     C-grid solver. It is here for completeness, but its usefulness is
103  C     unclear.  C     unclear.
# Line 125  C     unclear. Line 105  C     unclear.
105  #endif /* SEAICE_CGRID */  #endif /* SEAICE_CGRID */
106    
107  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
108  #define SEAICE_CAP_HEFF  C     currently only relevant for SEAICE_GROWTH_LEGACY
109    #undef SEAICE_CAP_HEFF
110  C--   When set limit the Ice-Loading to mass of 1/5 of Surface ocean grid-box  C--   When set limit the Ice-Loading to mass of 1/5 of Surface ocean grid-box
111  #undef SEAICE_CAP_ICELOAD  #undef SEAICE_CAP_ICELOAD
112  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,
113  C--   not recommended  C--   not recommended
114  #undef SEAICE_ALLOW_CLIPVELS  #undef SEAICE_ALLOW_CLIPVELS
115    C--   When set cap the sublimation latent heat flux in solve4temp
116    C     according to the available amount of ice+snow. Otherwise this
117    C     term is treated like all of the others -- residuals heat and
118    C     fw stocks are passed to the ocean at the end of seaice_growth
119    C     in a conservative manner. SEAICE_CAP_SUBLIM is not needed
120    C     as of now, but kept just in case.
121    #undef SEAICE_CAP_SUBLIM
122    
123  C     enable free drift code  C--   enable free drift code
124  #undef SEAICE_ALLOW_FREEDRIFT  #undef SEAICE_ALLOW_FREEDRIFT
125    
126  #endif /* ALLOW_SEAICE */  #endif /* ALLOW_SEAICE */
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