| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/seaice/SEAICE_OPTIONS.h,v 1.63 2012/03/08 01:15:02 gforget Exp $ |
| 2 |
|
| 3 |
C *==========================================================* |
| 4 |
C | SEAICE_OPTIONS.h |
| 5 |
C | o CPP options file for sea ice package. |
| 6 |
C *==========================================================* |
| 7 |
C | Use this file for selecting options within the sea ice |
| 8 |
C | package. |
| 9 |
C *==========================================================* |
| 10 |
|
| 11 |
#ifndef SEAICE_OPTIONS_H |
| 12 |
#define SEAICE_OPTIONS_H |
| 13 |
#include "PACKAGES_CONFIG.h" |
| 14 |
#include "CPP_OPTIONS.h" |
| 15 |
|
| 16 |
#ifdef ALLOW_SEAICE |
| 17 |
C Package-specific Options & Macros go here |
| 18 |
|
| 19 |
C-- Write "text-plots" of certain fields in STDOUT for debugging. |
| 20 |
#undef SEAICE_DEBUG |
| 21 |
|
| 22 |
C-- Allow sea-ice dynamic code. |
| 23 |
C This option is provided to allow use of TAMC |
| 24 |
C on the thermodynamics component of the code only. |
| 25 |
C Sea-ice dynamics can also be turned off at runtime |
| 26 |
C using variable SEAICEuseDYNAMICS. |
| 27 |
#define SEAICE_ALLOW_DYNAMICS |
| 28 |
|
| 29 |
C-- By default, the sea-ice package uses its own integrated bulk |
| 30 |
C formulae to compute fluxes (fu, fv, EmPmR, Qnet, and Qsw) over |
| 31 |
C open-ocean. When this flag is set, these variables are computed |
| 32 |
C in a separate external package, for example, pkg/exf, and then |
| 33 |
C modified for sea-ice effects by pkg/seaice. |
| 34 |
#define SEAICE_EXTERNAL_FLUXES |
| 35 |
|
| 36 |
C-- By default, the sea-ice package uses 2-category thermodynamics. |
| 37 |
C When this flag is set, an 8-category calculation of ice |
| 38 |
C thermodynamics is carried out in groatb.F |
| 39 |
C Note the pickup_seaice.* generated by this option differ |
| 40 |
C from those generated with the default 2-category model. |
| 41 |
C Therefore it is not possible to switch between the two |
| 42 |
C in the middle of an integration. |
| 43 |
#define SEAICE_MULTICATEGORY |
| 44 |
|
| 45 |
CToM<<< |
| 46 |
C-- run with sea ice thickness distribution; |
| 47 |
C set number of categories (nITD) in SIZE.h |
| 48 |
C |
| 49 |
C-- SEAICE_ITD replaces SEAICE_MULTICATEGORY |
| 50 |
C but uses parts of its code: |
| 51 |
C MULTIDIM = nITD (in SEAICE_SIZE.h) |
| 52 |
#define SEAICE_ITD |
| 53 |
C>>>ToM |
| 54 |
|
| 55 |
C-- Use the Old version of seaice_growth (close to cvs version 1.70) |
| 56 |
C otherwise, use the merged version (with some of Ian Fenty s code) |
| 57 |
#undef SEAICE_GROWTH_LEGACY |
| 58 |
|
| 59 |
C-- Since the missing sublimation term is now included |
| 60 |
C this flag is needed for backward compatibility |
| 61 |
#undef SEAICE_DISABLE_SUBLIM |
| 62 |
|
| 63 |
C-- Suspected missing term in coupled ocn-ice heat budget (to be further tested) |
| 64 |
#undef SEAICE_DISABLE_HEATCONSFIX |
| 65 |
|
| 66 |
C-- options only available in the merged version |
| 67 |
ccc#ifndef SEAICE_GROWTH_LEGACY |
| 68 |
C- to ensure heat conservation in the coupled ocean-seaice system |
| 69 |
ccc# undef SEAICE_HEAT_CONSERV_FIX |
| 70 |
C- to preclude infinitesimal ice concentrations: |
| 71 |
ccc# undef ALLOW_PRECLUDE_INFINITESIMAL_AREA |
| 72 |
ccc#endif |
| 73 |
CToM<<< |
| 74 |
C-- The freezing point of water is a simple linear dependence to salinity. |
| 75 |
C The flag below is now obsolete, but kept to ease the transition |
| 76 |
C from the old constant freezing point default (see seaice_check.F). |
| 77 |
#define SEAICE_VARIABLE_FREEZING_POINT |
| 78 |
C>>>ToM |
| 79 |
|
| 80 |
C-- By default sea ice is fresh. Set following flag for salty ice. |
| 81 |
#define SEAICE_VARIABLE_SALINITY |
| 82 |
|
| 83 |
C-- Tracers of ice and/or ice cover. |
| 84 |
#define ALLOW_SITRACER |
| 85 |
#ifdef ALLOW_SITRACER |
| 86 |
C-- To try avoid 'spontaneous generation' of tracer maxima by advdiff. |
| 87 |
# define ALLOW_SITRACER_ADVCAP |
| 88 |
#endif |
| 89 |
|
| 90 |
C-- By default the seaice model is discretized on a B-Grid (for |
| 91 |
C historical reasons). Define the following flag to use a new |
| 92 |
C (not thoroughly) test version on a C-grid |
| 93 |
#define SEAICE_CGRID |
| 94 |
|
| 95 |
C-- Only for the C-grid version it is possible to |
| 96 |
#ifdef SEAICE_CGRID |
| 97 |
C enable EVP code by defining the following flag |
| 98 |
# define SEAICE_ALLOW_EVP |
| 99 |
# ifdef SEAICE_ALLOW_EVP |
| 100 |
C-- When set use SEAICE_zetaMin and SEAICE_evpDampC to limit |
| 101 |
C-- viscosities from below and above in seaice_evp |
| 102 |
C-- not necessary, and not recommended |
| 103 |
# undef SEAICE_ALLOW_CLIPZETA |
| 104 |
# endif /* SEAICE_ALLOW_EVP */ |
| 105 |
C allow the truncated ellipse rheology (runtime flag SEAICEuseTEM) |
| 106 |
# undef SEAICE_ALLOW_TEM |
| 107 |
#else /* not SEAICE_CGRID, but old B-grid */ |
| 108 |
C-- By default for B-grid dynamics solver wind stress under sea-ice is |
| 109 |
C set to the same value as it would be if there was no sea-ice. |
| 110 |
C Define following CPP flag for B-grid ice-ocean stress coupling. |
| 111 |
# define SEAICE_BICE_STRESS |
| 112 |
|
| 113 |
C-- By default for B-grid dynamics solver surface tilt is obtained |
| 114 |
C indirectly via geostrophic velocities. Define following CPP |
| 115 |
C in order to use ETAN instead. |
| 116 |
# define EXPLICIT_SSH_SLOPE |
| 117 |
C-- Defining this flag turns on a FV-discretization of the B-grid LSOR |
| 118 |
C solver. It is smoother and includes all metric terms, similar to the |
| 119 |
C C-grid solver. It is here for completeness, but its usefulness is |
| 120 |
C unclear. |
| 121 |
# undef SEAICE_LSRBNEW |
| 122 |
#endif /* SEAICE_CGRID */ |
| 123 |
|
| 124 |
C-- When set use MAX_HEFF to cap sea ice thickness in seaice_growth |
| 125 |
#undef SEAICE_CAP_HEFF |
| 126 |
C-- When set limit the Ice-Loading to mass of 1/5 of Surface ocean grid-box |
| 127 |
#undef SEAICE_CAP_ICELOAD |
| 128 |
C-- When set use SEAICE_clipVelocties = .true., to clip U/VICE at 40cm/s, |
| 129 |
C-- not recommended |
| 130 |
#undef SEAICE_ALLOW_CLIPVELS |
| 131 |
C-- When set cap the sublimation latent heat flux in solve4temp |
| 132 |
C according to the available amount of ice+snow. Otherwise this |
| 133 |
C term is treated like all of the others -- residuals heat and |
| 134 |
C fw stocks are passed to the ocean at the end of seaice_growth |
| 135 |
C in a conservative manner. SEAICE_CAP_SUBLIM is not needed |
| 136 |
C as of now, but kept just in case. |
| 137 |
#undef SEAICE_CAP_SUBLIM |
| 138 |
|
| 139 |
C enable free drift code |
| 140 |
#undef SEAICE_ALLOW_FREEDRIFT |
| 141 |
|
| 142 |
#endif /* ALLOW_SEAICE */ |
| 143 |
#endif /* SEAICE_OPTIONS_H */ |
| 144 |
|
| 145 |
CEH3 ;;; Local Variables: *** |
| 146 |
CEH3 ;;; mode:fortran *** |
| 147 |
CEH3 ;;; End: *** |
Parent Directory
| 
Revision Log
| 
Revision Graph