| 25 |
C on the thermodynamics component of the code only. |
C on the thermodynamics component of the code only. |
| 26 |
C Sea-ice dynamics can also be turned off at runtime |
C Sea-ice dynamics can also be turned off at runtime |
| 27 |
C using variable SEAICEuseDYNAMICS. |
C using variable SEAICEuseDYNAMICS. |
| 28 |
#undef SEAICE_ALLOW_DYNAMICS |
#define SEAICE_ALLOW_DYNAMICS |
| 29 |
|
|
| 30 |
C-- By default, the sea-ice package uses its own integrated bulk |
C-- By default, the sea-ice package uses its own integrated bulk |
| 31 |
C formulae to compute fluxes (fu, fv, EmPmR, Qnet, and Qsw) over |
C formulae to compute fluxes (fu, fv, EmPmR, Qnet, and Qsw) over |
| 34 |
C modified for sea-ice effects by pkg/seaice. |
C modified for sea-ice effects by pkg/seaice. |
| 35 |
#define SEAICE_EXTERNAL_FLUXES |
#define SEAICE_EXTERNAL_FLUXES |
| 36 |
|
|
| 37 |
C-- By default, the sea-ice package uses 2-category thermodynamics. |
C-- The actual number of ice categories used to solve for seaice flux is |
| 38 |
C When this flag is set, an 8-category calculation of ice |
C now a run-time parameter (SEAICE_multDim). |
| 39 |
C thermodynamics is carried out in groatb.F |
C This CPP-flag will be completely removed soon (no longer in main code); |
| 40 |
C Note the pickup_seaice.* generated by this option differ |
C it is just used to set default number of categories, i.e., =1 if undef, |
| 41 |
C from those generated with the default 2-category model. |
C or =MULTDIM if defined (MULTDIM=7 in default SEAICE_SIZE.h). |
| 42 |
C Therefore it is not possible to switch between the two |
C Note: be aware of pickup_seaice.* compatibility issues when restarting |
| 43 |
C in the middle of an integration. |
C a simulation with a different number of categories. |
| 44 |
#undef SEAICE_MULTICATEGORY |
#undef SEAICE_MULTICATEGORY |
| 45 |
|
|
| 46 |
|
C-- run with sea Ice Thickness Distribution (ITD); |
| 47 |
|
C set number of categories (nITD) in SEAICE_SIZE.h |
| 48 |
|
#undef SEAICE_ITD |
| 49 |
|
|
| 50 |
|
C-- Use the Old version of seaice_growth (close to cvs version 1.70) |
| 51 |
|
C otherwise, use the merged version (with some of Ian Fenty s code) |
| 52 |
|
#undef SEAICE_GROWTH_LEGACY |
| 53 |
#undef SEAICE_MODIFY_GROWTH_ADJ |
#undef SEAICE_MODIFY_GROWTH_ADJ |
|
#undef SEAICE_SIMPLIFY_GROWTH_ADJ |
|
| 54 |
|
|
| 55 |
C-- Since the missing sublimation term is now included |
C-- Since the missing sublimation term is now included |
| 56 |
C this flag is needed for backward compatibility |
C this flag is needed for backward compatibility |
| 57 |
#define SEAICE_DISABLE_SUBLIM |
#define SEAICE_DISABLE_SUBLIM |
| 58 |
|
|
| 59 |
C-- Suspected missing term in coupled ocn-ice heat budget (to be further tested) |
C-- Suspected missing term in coupled ocn-ice heat budget (to be confirmed) |
| 60 |
#define SEAICE_DISABLE_HEATCONSFIX |
#define SEAICE_DISABLE_HEATCONSFIX |
| 61 |
|
|
| 62 |
C-- The freezing point of water is a simple linear dependence to salinity. |
C-- Default is constant seaice salinity (SEAICE_salt0); Define the following |
| 63 |
C The flag below is now obsolete, but kept to ease the transition |
C flag to consider (space & time) variable salinity: advected and forming |
| 64 |
C from the old constant freezing point default (see seaice_check.F). |
C seaice with a fraction (=SEAICE_saltFrac) of freezing seawater salinity. |
| 65 |
#define SEAICE_VARIABLE_FREEZING_POINT |
C- Note: SItracer also offers an alternative way to handle variable salinity. |
| 66 |
|
#define SEAICE_VARIABLE_SALINITY |
| 67 |
C-- By default cdm wind stress under sea-ice is set to the |
|
| 68 |
C same value as it would be if there was no sea-ice. |
C-- Tracers of ice and/or ice cover. |
| 69 |
C This is a placeholder until a more physically-sensible |
#undef ALLOW_SITRACER |
| 70 |
C stable solution is developed. Apparently ocean stress |
#ifdef ALLOW_SITRACER |
| 71 |
C that is based on sea-ice velocity can cause trouble in |
C-- To try avoid 'spontaneous generation' of tracer maxima by advdiff. |
| 72 |
C Arctic Ocean configurations. This temporary solution |
# define ALLOW_SITRACER_ADVCAP |
| 73 |
C also corresponds to that adopted by CCSM-2. For the |
#endif |
|
C adventurous user who requires ice-modified stress, |
|
|
C following options are available. |
|
|
#undef SEAICE_ORIGINAL_BAD_ICE_STRESS |
|
|
#undef SEAICE_TEST_ICE_STRESS_1 |
|
| 74 |
|
|
| 75 |
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 |
| 76 |
C historical reasons). Define the following flag to use a new |
C historical reasons). Define the following flag to use a new |
| 77 |
C (not thoroughly) test version on a C-grid |
C (not thoroughly) test version on a C-grid |
| 78 |
#define SEAICE_CGRID |
#undef SEAICE_CGRID |
| 79 |
|
|
| 80 |
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 |
|
| 81 |
#ifdef SEAICE_CGRID |
#ifdef SEAICE_CGRID |
| 82 |
#define SEAICE_ALLOW_EVP |
C enable JFNK code by defining the following flag |
| 83 |
|
# define SEAICE_ALLOW_JFNK |
| 84 |
|
C enable EVP code by defining the following flag |
| 85 |
|
# define SEAICE_ALLOW_EVP |
| 86 |
|
# ifdef SEAICE_ALLOW_EVP |
| 87 |
|
C-- When set use SEAICE_zetaMin and SEAICE_evpDampC to limit viscosities |
| 88 |
|
C from below and above in seaice_evp: not necessary, and not recommended |
| 89 |
|
# undef SEAICE_ALLOW_CLIPZETA |
| 90 |
|
# endif /* SEAICE_ALLOW_EVP */ |
| 91 |
|
C regularize zeta to zmax with a smooth tanh-function instead |
| 92 |
|
C of a min(zeta,zmax). This improves convergence of iterative |
| 93 |
|
C solvers (Lemieux and Tremblay 2009, JGR). No effect on EVP |
| 94 |
|
# undef SEAICE_ZETA_SMOOTHREG |
| 95 |
|
C allow the truncated ellipse rheology (runtime flag SEAICEuseTEM) |
| 96 |
|
# undef SEAICE_ALLOW_TEM |
| 97 |
|
#else /* not SEAICE_CGRID, but old B-grid */ |
| 98 |
|
C-- By default for B-grid dynamics solver wind stress under sea-ice is |
| 99 |
|
C set to the same value as it would be if there was no sea-ice. |
| 100 |
|
C Define following CPP flag for B-grid ice-ocean stress coupling. |
| 101 |
|
# define SEAICE_BICE_STRESS |
| 102 |
|
|
| 103 |
|
C-- By default for B-grid dynamics solver surface tilt is obtained |
| 104 |
|
C indirectly via geostrophic velocities. Define following CPP |
| 105 |
|
C in order to use ETAN instead. |
| 106 |
|
# define EXPLICIT_SSH_SLOPE |
| 107 |
|
C-- Defining this flag turns on FV-discretization of the B-grid LSOR solver. |
| 108 |
|
C It is smoother and includes all metric terms, similar to C-grid solvers. |
| 109 |
|
C It is here for completeness, but its usefulness is unclear. |
| 110 |
|
# undef SEAICE_LSRBNEW |
| 111 |
#endif /* SEAICE_CGRID */ |
#endif /* SEAICE_CGRID */ |
| 112 |
|
|
| 113 |
C-- By default sea ice is fresh. Set following flag for salty ice. |
C-- When set use MAX_HEFF to cap seaice thickness in seaice_growth; |
| 114 |
#define SEAICE_VARIABLE_SALINITY |
C currently only relevant for SEAICE_GROWTH_LEGACY |
| 115 |
|
#undef SEAICE_CAP_HEFF |
| 116 |
|
C-- When set limit the Ice-Loading to mass of 1/5 of Surface ocean grid-box |
| 117 |
|
#undef SEAICE_CAP_ICELOAD |
| 118 |
|
C-- When set use SEAICE_clipVelocties = .true., to clip U/VICE at 40cm/s, |
| 119 |
|
C not recommended |
| 120 |
|
#undef SEAICE_ALLOW_CLIPVELS |
| 121 |
|
C-- When set cap the sublimation latent heat flux in solve4temp according |
| 122 |
|
C to the available amount of ice+snow. Otherwise this term is treated |
| 123 |
|
C like all of the others -- residuals heat and fw stocks are passed to |
| 124 |
|
C the ocean at the end of seaice_growth in a conservative manner. |
| 125 |
|
C SEAICE_CAP_SUBLIM is not needed as of now, but kept just in case. |
| 126 |
|
#undef SEAICE_CAP_SUBLIM |
| 127 |
|
|
| 128 |
|
C-- Enable free drift code |
| 129 |
|
#undef SEAICE_ALLOW_FREEDRIFT |
| 130 |
|
|
| 131 |
#endif /* ALLOW_SEAICE */ |
#endif /* ALLOW_SEAICE */ |
| 132 |
#endif /* SEAICE_OPTIONS_H */ |
#endif /* SEAICE_OPTIONS_H */ |
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