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C $Header: /u/gcmpack/MITgcm/pkg/seaice/SEAICE_OPTIONS.h,v 1.33 2009/03/18 13:48:53 mlosch Exp $ |
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C $Name: $ |
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|
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C /==========================================================\ |
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C | SEAICE_OPTIONS.h | |
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C | o CPP options file for sea ice package. | |
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C |==========================================================| |
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C | Use this file for selecting options within the sea ice | |
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C | package. | |
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C \==========================================================/ |
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|
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#ifndef SEAICE_OPTIONS_H |
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#define SEAICE_OPTIONS_H |
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_OPTIONS.h" |
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|
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C-- Write "text-plots" of certain fields in STDOUT for debugging. |
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#undef SEAICE_DEBUG |
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|
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C-- Allow sea-ice dynamic code. |
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C This option is provided to allow use of TAMC |
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C on the thermodynamics component of the code only. |
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C Sea-ice dynamics can also be turned off at runtime |
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C using variable SEAICEuseDYNAMICS. |
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#define SEAICE_ALLOW_DYNAMICS |
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|
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C-- By default, the sea-ice package uses its own integrated bulk |
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C formulae to compute fluxes (fu, fv, EmPmR, Qnet, and Qsw) over |
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C open-ocean. When this flag is set, these variables are computed |
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C in a separate external package, for example, pkg/exf, and then |
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C modified for sea-ice effects by pkg/seaice. |
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#define SEAICE_EXTERNAL_FLUXES |
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|
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C-- By default, the sea-ice package uses 2-category thermodynamics. |
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C When this flag is set, an 8-category calculation of ice |
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C thermodynamics is carried out in groatb.F |
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C Note the pickup_seaice.* generated by this option differ |
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C from those generated with the default 2-category model. |
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C Therefore it is not possible to switch between the two |
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C in the middle of an integration. |
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#undef SEAICE_MULTICATEGORY |
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|
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C-- By default the freezing point of water is set to the value of |
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C the parameter SEAICE_freeze (=-1.96 by default). To use a |
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C simple linear dependence of the freezing point on salinity, |
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C set the following flag (pressure is assumed to have no effect, |
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C which is a good assumption for the top 20 meters). With this |
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C option defined the parameter SEAICE_freeze has no effect. |
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#undef SEAICE_VARIABLE_FREEZING_POINT |
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|
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C-- Allow SEAICEuseFlooding, which converts snow to ice if submerged. |
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#define ALLOW_SEAICE_FLOODING |
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|
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C-- By default sea ice is fresh. Set following flag for salty ice. |
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#undef SEAICE_SALINITY |
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|
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C-- Track sea ice age. |
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#undef SEAICE_AGE |
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|
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C-- By default the seaice model is discretized on a B-Grid (for |
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C historical reasons). Define the following flag to use a new |
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C (not thoroughly) test version on a C-grid |
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#define SEAICE_CGRID |
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|
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C-- Only for the C-grid version it is possible to |
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#ifdef SEAICE_CGRID |
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C enable EVP code by defining the following flag |
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#define SEAICE_ALLOW_EVP |
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C allow the truncated ellipse rheology (runtime flag SEAICEuseTEM) |
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#undef SEAICE_ALLOW_TEM |
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#else /* not SEAICE_CGRID, but old B-grid */ |
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C-- By default for B-grid dynamics solver wind stress under sea-ice is |
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C set to the same value as it would be if there was no sea-ice. |
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C Define following CPP flag for B-grid ice-ocean stress coupling. |
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#define SEAICE_BICE_STRESS |
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|
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C-- By default for B-grid dynamics solver surface tilt is obtained |
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C indirectly via geostrophic velocities. Define following CPP |
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C in order to use ETAN instead. |
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#define EXPLICIT_SSH_SLOPE |
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|
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#endif /* SEAICE_CGRID */ |
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|
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C-- When set use MAX_HEFF to cap sea ice thickness in seaice_growth |
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#undef SEAICE_CAP_HEFF |
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|
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C-- By default, pkg sea-ice specifies surface air temperature (SAT) |
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C and humidity (SPH) exactly as per input files, with the exception |
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C of a cold temperature cap on SAT. This flag modulates SAT and |
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C SPH based on sea ice concentration and on climatological values |
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C for SAT and SPH over sea ice. |
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#undef SEAICE_CLIM_AIR |
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|
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#endif /* SEAICE_OPTIONS_H */ |
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|
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CEH3 ;;; Local Variables: *** |
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CEH3 ;;; mode:fortran *** |
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CEH3 ;;; End: *** |
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