/[MITgcm]/MITgcm/verification/lab_sea/code_ad/SEAICE_OPTIONS.h

Diff of /MITgcm/verification/lab_sea/code_ad/SEAICE_OPTIONS.h

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-revision 1.3 by heimbach,
Wed Sep 26 04:38:20 2007 UTC
+revision 1.16 by gforget,
Tue Feb  7 18:51:04 2012 UTC
 Line 1
  C $Header$
+ C $Name$
- C     /==========================================================\
+ C     *==========================================================*
- C     | SEAICE_OPTIONS.h                                         |
+ C     | SEAICE_OPTIONS.h
- C     | o CPP options file for sea ice package.                  |
+ C     | o CPP options file for sea ice package.
- C     |==========================================================|
+ C     *==========================================================*
- C     | Use this file for selecting options within the sea ice   |
+ C     | Use this file for selecting options within the sea ice
- C     | package.                                                 |
+ C     | package.
- C     \==========================================================/
+ C     *==========================================================*
  #ifndef SEAICE_OPTIONS_H
  #define SEAICE_OPTIONS_H
  #include "PACKAGES_CONFIG.h"
  #include "CPP_OPTIONS.h"
+ #ifdef ALLOW_SEAICE
+ C     Package-specific Options & Macros go here
  C--   Write "text-plots" of certain fields in STDOUT for debugging.
  #undef SEAICE_DEBUG
-Line 23 
 C     Sea-ice dynamics can also be turne
+Line 27 
 C     Sea-ice dynamics can also be turne
  C     using variable SEAICEuseDYNAMICS.
  #define SEAICE_ALLOW_DYNAMICS
- C--   By default, pkg/seaice defines forcing variable internally, in
- C     SEAICE_FFIELDS.h, and reads them in from files.  When CPP option
- C     SEAICE_EXTERNAL_FORCING is defined, the above forcing variables
- C     are defined and provided by an external package.  At present this
- C     option is hardwired for pkg/exf and the variables are passed using
- C     include file exf_fields.h.
- #define SEAICE_EXTERNAL_FORCING
- #ifdef SEAICE_EXTERNAL_FORCING
- cph#include "EXF_OPTIONS.h"
- #endif /* SEAICE_EXTERNAL_FORCING */
  C--   By default, the sea-ice package uses its own integrated bulk
  C     formulae to compute fluxes (fu, fv, EmPmR, Qnet, and Qsw) over
  C     open-ocean.  When this flag is set, these variables are computed
-Line 48 
 C     Note the pickup_seaice.* generated
+Line 41 
 C     Note the pickup_seaice.* generated
  C     from those generated with the default 2-category model.
  C     Therefore it is not possible to switch between the two
  C     in the middle of an integration.
- #undef SEAICE_MULTILEVEL
+ #define SEAICE_MULTICATEGORY
- 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)
- 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)
- C     This is a placeholder until a more physically-sensible
+ #define SEAICE_GROWTH_LEGACY
- C     stable solution is developed.  Apparently ocean stress
- 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)
- C     Arctic Ocean configurations.  This temporary solution
+ #ifndef SEAICE_GROWTH_LEGACY
- C     also corresponds to that adopted by CCSM-2.  For the
+ C-    to ensure heat conservation in the coupled ocean-seaice system
- C     adventurous user who requires ice-modified stress,
+ # undef SEAICE_HEAT_CONSERV_FIX
- C     following options are available.
+ C-    to switch on/off open-water freezing contribution to thickness tendency:
- #undef SEAICE_ORIGINAL_BAD_ICE_STRESS
+ # define SEAICE_DO_OPEN_WATER_GROWTH
- #undef SEAICE_TEST_ICE_STRESS_1
+ C-    ifdef SEAICE_DO_OPEN_WATER_GROWTH then define SEAICE_DO_OPEN_WATER_MELT
+ C     to also allow open-water air-sea heat fluxes melt ice
+ # undef SEAICE_DO_OPEN_WATER_MELT
+ C-    to switch on/off ocean heat contribution to seaice cover reduction:
+ # define SEAICE_OCN_MELT_ACT_ON_AREA
+ C-    to preclude infinitesimal ice concentrations:
+ # undef ALLOW_PRECLUDE_INFINITESIMAL_AREA
+ #endif
+ C--   Use the Old version of seaice_solve4temp (formerly seaice_budget_ice)
+ C     otherwise, use Ian Fenty s version
+ #define 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.
  #undef SEAICE_VARIABLE_FREEZING_POINT
- C--   By default the seaice model is discretized on a B-Grid (for
+ C--   Allow SEAICEuseFlooding, which converts snow to ice if submerged.
+ #define ALLOW_SEAICE_FLOODING
+ C--   By default sea ice is fresh.  Set following flag for salty ice.
+ #define SEAICE_VARIABLE_SALINITY
+ C--   Tracers of ice and/or ice cover.
+ #undef ALLOW_SITRACER
+ #ifdef ALLOW_SITRACER
+ C--   To try avoid 'spontaneous generation' of tracer maxima by advdiff.
+ # define ALLOW_SITRACER_ADVCAP
+ #endif
+ C--   By default the seaice model is discretized on a B-Grid (for
  C     historical reasons). Define the following flag to use a new
  C     (not thoroughly) test version on a C-grid
  #define SEAICE_CGRID
- 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
  #ifdef SEAICE_CGRID
- #undef SEAICE_ALLOW_EVP
+ C     enable EVP code by defining the following flag
+ # define SEAICE_ALLOW_EVP
+ # ifdef SEAICE_ALLOW_EVP
+ C--   When set use SEAICE_zetaMin and SEAICE_evpDampC to limit
+ C--   viscosities from below and above in seaice_evp
+ C--   not necessary, and not recommended
+ #  undef SEAICE_ALLOW_CLIPZETA
+ # endif /* SEAICE_ALLOW_EVP */
+ C     allow the truncated ellipse rheology (runtime flag SEAICEuseTEM)
+ # undef SEAICE_ALLOW_TEM
+ #else /* not SEAICE_CGRID, but old B-grid */
+ C--   By default for B-grid dynamics solver wind stress under sea-ice is
+ C     set to the same value as it would be if there was no sea-ice.
+ C     Define following CPP flag for B-grid ice-ocean stress coupling.
+ # define SEAICE_BICE_STRESS
+ C--   By default for B-grid dynamics solver surface tilt is obtained
+ C     indirectly via geostrophic velocities. Define following CPP
+ C     in order to use ETAN instead.
+ # define EXPLICIT_SSH_SLOPE
+ C--   Defining this flag turns on a FV-discretization of the B-grid LSOR
+ C     solver. It is smoother and includes all metric terms, similar to the
+ C     C-grid solver. It is here for completeness, but its usefulness is
+ C     unclear.
+ # undef SEAICE_LSRBNEW
  #endif /* SEAICE_CGRID */
- C--   Seaice flooding
+ C--   When set use MAX_HEFF to cap sea ice thickness in seaice_growth
- #define ALLOW_SEAICE_FLOODING
+ #undef SEAICE_CAP_HEFF
+ C--   When set limit the Ice-Loading to mass of 1/5 of Surface ocean grid-box
- C--   By default sea ice is fresh.  Set following flag for salty ice.
+ #undef SEAICE_CAP_ICELOAD
- #define SEAICE_SALINITY
+ C--   When set use SEAICE_clipVelocties = .true., to clip U/VICE at 40cm/s,
+ C--   not recommended
+ #undef SEAICE_ALLOW_CLIPVELS
+ C     enable free drift code
+ #define SEAICE_ALLOW_FREEDRIFT
+ #endif /* ALLOW_SEAICE */
  #endif /* SEAICE_OPTIONS_H */
  CEH3 ;;; Local Variables: ***

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