/[MITgcm]/MITgcm/verification/lab_sea/code_ad/SEAICE_OPTIONS.h
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revision 1.8 by gforget, Wed Oct 6 20:13:34 2010 UTC revision 1.15 by gforget, Fri Feb 3 13:37:09 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  #define SEAICE_MULTICATEGORY  #define SEAICE_MULTICATEGORY
45    
46  C--   By default cdm wind stress under sea-ice is set to the  C--   Use the Old version of seaice_growth (close to cvs version 1.70)
47  C     same value as it would be if there was no sea-ice.  C     otherwise, use the merged version (with some of Ian Fenty s code)
48  C     This is a placeholder until a more physically-sensible  #define SEAICE_GROWTH_LEGACY
49  C     stable solution is developed.  Apparently ocean stress  
50  C     that is based on sea-ice velocity can cause trouble in  C--   options only available in the merged version (from Ian Fenty s code)
51  C     Arctic Ocean configurations.  This temporary solution  #ifndef SEAICE_GROWTH_LEGACY
52  C     also corresponds to that adopted by CCSM-2.  For the  C-    to ensure heat conservation in the coupled ocean-seaice system
53  C     adventurous user who requires ice-modified stress,  # undef SEAICE_HEAT_CONSERV_FIX
54  C     following options are available.  C-    to switch on/off open-water freezing contribution to thickness tendency:
55  #undef SEAICE_ORIGINAL_BAD_ICE_STRESS  # define SEAICE_DO_OPEN_WATER_GROWTH
56  #undef SEAICE_TEST_ICE_STRESS_1  C-    ifdef SEAICE_DO_OPEN_WATER_GROWTH then define SEAICE_DO_OPEN_WATER_MELT
57    C     to also allow open-water air-sea heat fluxes melt ice
58    # undef SEAICE_DO_OPEN_WATER_MELT
59    C-    to switch on/off ocean heat contribution to seaice cover reduction:
60    # define SEAICE_OCN_MELT_ACT_ON_AREA
61    C-    to preclude infinitesimal ice concentrations:
62    # undef ALLOW_PRECLUDE_INFINITESIMAL_AREA
63    #endif
64    
65    C-    to use the MCPhee formula in computing ocean/ice fluxes
66    #undef MCPHEE_OCEAN_ICE_HEAT_FLUX
67    
68    C--   Use the Old version of seaice_solve4temp (formerly seaice_budget_ice)
69    C     otherwise, use Ian Fenty s version
70    #define SEAICE_SOLVE4TEMP_LEGACY
71    
72  C--   By default the freezing point of water is set to the value of  C--   By default the freezing point of water is set to the value of
73  C     the parameter SEAICE_freeze (=-1.96 by default). To use a  C     the parameter SEAICE_freeze (=-1.96 by default). To use a
# Line 60  C     which is a good assumption for the Line 77  C     which is a good assumption for the
77  C     option defined the parameter SEAICE_freeze has no effect.  C     option defined the parameter SEAICE_freeze has no effect.
78  #undef SEAICE_VARIABLE_FREEZING_POINT  #undef SEAICE_VARIABLE_FREEZING_POINT
79    
80    C--   Allow SEAICEuseFlooding, which converts snow to ice if submerged.
81    #define ALLOW_SEAICE_FLOODING
82    
83    C--   By default sea ice is fresh.  Set following flag for salty ice.
84    #define SEAICE_VARIABLE_SALINITY
85    
86    C--   Tracers of ice and/or ice cover.
87    #undef ALLOW_SITRACER
88    #ifdef ALLOW_SITRACER
89    C--   To try avoid 'spontaneous generation' of tracer maxima by advdiff.
90    # define ALLOW_SITRACER_ADVCAP
91    #endif
92    
93  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
94  C     historical reasons). Define the following flag to use a new  C     historical reasons). Define the following flag to use a new
95  C     (not thoroughly) test version on a C-grid  C     (not thoroughly) test version on a C-grid
96  #define SEAICE_CGRID  #define SEAICE_CGRID
97    
98  C--   Only for the C-grid version it is possible to enable EVP code by  C--   Only for the C-grid version it is possible to
 C     defining the following flag  
99  #ifdef SEAICE_CGRID  #ifdef SEAICE_CGRID
100  #define SEAICE_ALLOW_EVP  C     enable EVP code by defining the following flag
101    # define SEAICE_ALLOW_EVP
102    # ifdef SEAICE_ALLOW_EVP
103    C--   When set use SEAICE_zetaMin and SEAICE_evpDampC to limit
104    C--   viscosities from below and above in seaice_evp
105    C--   not necessary, and not recommended
106    #  undef SEAICE_ALLOW_CLIPZETA
107    # endif /* SEAICE_ALLOW_EVP */
108    C     allow the truncated ellipse rheology (runtime flag SEAICEuseTEM)
109    # undef SEAICE_ALLOW_TEM
110    #else /* not SEAICE_CGRID, but old B-grid */
111    C--   By default for B-grid dynamics solver wind stress under sea-ice is
112    C     set to the same value as it would be if there was no sea-ice.
113    C     Define following CPP flag for B-grid ice-ocean stress coupling.
114    # define SEAICE_BICE_STRESS
115    
116    C--   By default for B-grid dynamics solver surface tilt is obtained
117    C     indirectly via geostrophic velocities. Define following CPP
118    C     in order to use ETAN instead.
119    # define EXPLICIT_SSH_SLOPE
120    C--   Defining this flag turns on a FV-discretization of the B-grid LSOR
121    C     solver. It is smoother and includes all metric terms, similar to the
122    C     C-grid solver. It is here for completeness, but its usefulness is
123    C     unclear.
124    # undef SEAICE_LSRBNEW
125  #endif /* SEAICE_CGRID */  #endif /* SEAICE_CGRID */
126    
127  C--   Seaice flooding  C--   When set use MAX_HEFF to cap sea ice thickness in seaice_growth
128  #define ALLOW_SEAICE_FLOODING  #undef SEAICE_CAP_HEFF
129    C--   When set limit the Ice-Loading to mass of 1/5 of Surface ocean grid-box
130  C--   By default sea ice is fresh.  Set following flag for salty ice.  #undef SEAICE_CAP_ICELOAD
131  #define SEAICE_SALINITY  C--   When set use SEAICE_clipVelocties = .true., to clip U/VICE at 40cm/s,
132    C--   not recommended
133  c--   Enable modified sea-ice thermodynamic by Ian Fenty  #undef SEAICE_ALLOW_CLIPVELS
 c--   Should improve adjoint, but doesnt work so far.  
 #undef SEAICE_ALLOW_TD_IF  
134    
135  C     enable free drift code  C     enable free drift code
136  #define SEAICE_ALLOW_FREEDRIFT  #define SEAICE_ALLOW_FREEDRIFT
137    
138    #endif /* ALLOW_SEAICE */
139  #endif /* SEAICE_OPTIONS_H */  #endif /* SEAICE_OPTIONS_H */
140    
141  CEH3 ;;; Local Variables: ***  CEH3 ;;; Local Variables: ***
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