| 1 | MODULE ice |
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| 2 | #if defined key_lim3 |
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| 3 | !!---------------------------------------------------------------------- |
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| 4 | !! 'key_lim3' : LIM3 sea-ice model |
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| 5 | !!---------------------------------------------------------------------- |
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| 6 | !! History : |
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| 7 | !! 2.0 ! 03-08 (C. Ethe) F90: Free form and module |
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| 8 | !! 3.0 ! 08-03 (M. Vancoppenolle) : LIM3 ! |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! LIM 3.0, UCL-LOCEAN-IPSL (2005) |
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| 11 | !! $Id: ice.F90 1471 2009-06-11 14:27:34Z smasson $ |
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| 12 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! * Modules used |
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| 15 | USE par_ice ! LIM sea-ice parameters |
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| 16 | |
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| 17 | IMPLICIT NONE |
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| 18 | PRIVATE |
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| 19 | !! |
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| 20 | !!====================================================================== |
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| 21 | !! *** MODULE ice *** |
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| 22 | !! |
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| 23 | !! ************** |
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| 24 | !! * L I M 3.0 * |
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| 25 | !! ************** |
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| 26 | !! |
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| 27 | !! ''in ice we trust'' |
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| 28 | !! |
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| 29 | !! This module contains the sea ice |
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| 30 | !! diagnostics variables of ice defined |
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| 31 | !! in memory |
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| 32 | !! |
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| 33 | !!====================================================================== |
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| 34 | !! |
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| 35 | !! LIM3 by the use of sweat, agile fingers and sometimes brain juice, |
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| 36 | !! was developed in Louvain-la-Neuve by : |
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| 37 | !! |
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| 38 | !! * Martin Vancoppenolle (UCL-ASTR, Belgium) |
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| 39 | !! * Sylvain Bouillon (UCL-ASTR, Belgium) |
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| 40 | !! * Miguel Angel Morales Maqueda (POL, UK) |
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| 41 | !! |
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| 42 | !! Based on extremely valuable earlier work by |
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| 43 | !! |
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| 44 | !! * Thierry Fichefet |
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| 45 | !! * Hugues Goosse |
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| 46 | !! |
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| 47 | !! The following persons also contributed to the code in various ways |
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| 48 | !! |
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| 49 | !! * Gurvan Madec, Claude Talandier, Christian Ethe |
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| 50 | !! and Rachid Benshila (LOCEAN-IPSL, France) |
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| 51 | !! * Xavier Fettweis (UCL-ASTR), Ralph Timmermann (AWI, Germany) |
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| 52 | !! * Bill Lipscomb (LANL), Cecilia Bitz (UWa) |
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| 53 | !! and Elisabeth Hunke (LANL), USA. |
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| 54 | !! |
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| 55 | !! (c) UCL-ASTR, 2005-2008 |
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| 56 | !! |
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| 57 | !! For more info, the interested user is kindly invited to consult the |
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| 58 | !! following references |
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| 59 | !! For model description and validation : |
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| 60 | !! * Vancoppenolle et al., Ocean Modelling, 2008a. |
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| 61 | !! * Vancoppenolle et al., Ocean Modelling, 2008b. |
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| 62 | !! |
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| 63 | !! For a specific description of EVP : |
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| 64 | !! * Bouillon et al., in prep for 2008. |
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| 65 | !! |
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| 66 | !! Or the reference manual, that should be available by 2009 |
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| 67 | !! |
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| 68 | !!====================================================================== |
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| 69 | !! | |
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| 70 | !! ***************************************** | |
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| 71 | !! * * | |
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| 72 | !! ************ I C E S T A T E V A R I A B L E S **************** | |
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| 73 | !! * * | |
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| 74 | !! ***************************************** | |
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| 75 | !! | |
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| 76 | !! Introduction : | |
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| 77 | !! -------------- | |
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| 78 | !! | |
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| 79 | !! Every ice-covered grid cell is characterized by a series of state | |
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| 80 | !! variables. To account for unresolved spatial variability in ice | |
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| 81 | !! thickness, the ice cover in divided in ice thickness categories. | |
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| 82 | !! | |
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| 83 | !! Sea ice state variables depend on the ice thickness category | |
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| 84 | !! | |
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| 85 | !! Those variables are divided into two groups | |
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| 86 | !! * Extensive (or global) variables. | |
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| 87 | !! These are the variables that are transported by all means | |
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| 88 | !! * Intensive (or equivalent) variables. | |
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| 89 | !! These are the variables that are either physically more | |
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| 90 | !! meaningful and/or used in ice thermodynamics | |
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| 91 | !! | |
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| 92 | !! Routines in limvar.F90 perform conversions | |
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| 93 | !! - lim_var_glo2eqv : from global to equivalent variables | |
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| 94 | !! - lim_var_eqv2glo : from equivalent to global variables | |
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| 95 | !! | |
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| 96 | !! For various purposes, the sea ice state variables have sometimes | |
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| 97 | !! to be aggregated over all ice thickness categories. This operation | |
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| 98 | !! is done in : | |
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| 99 | !! - lim_var_agg | |
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| 100 | !! | |
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| 101 | !! in icestp.F90, the routines that compute the changes in the ice | |
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| 102 | !! state variables are called | |
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| 103 | !! - lim_dyn : ice dynamics | |
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| 104 | !! - lim_trp : ice transport | |
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| 105 | !! - lim_itd_me : mechanical redistribution (ridging and rafting) | |
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| 106 | !! - lim_thd : ice halo-thermodynamics | |
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| 107 | !! - lim_itd_th : thermodynamic changes in ice thickness distribution | |
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| 108 | !! and creation of new ice | |
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| 109 | !! | |
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| 110 | !! See the associated routines for more information | |
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| 111 | !! | |
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| 112 | !! List of ice state variables : | |
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| 113 | !! ----------------------------- | |
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| 114 | !! | |
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| 115 | !!-------------|-------------|---------------------------------|-------| |
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| 116 | !! name in | name in | meaning | units | |
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| 117 | !! 2D routines | 1D routines | | | |
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| 118 | !!-------------|-------------|---------------------------------|-------| |
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| 119 | !! | |
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| 120 | !! ******************************************************************* | |
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| 121 | !! *** Dynamical variables (prognostic) *** | |
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| 122 | !! ******************************************************************* | |
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| 123 | !! | |
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| 124 | !! u_ice | - | Comp. U of the ice velocity | m/s | |
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| 125 | !! v_ice | - | Comp. V of the ice velocity | m/s | |
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| 126 | !! | |
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| 127 | !! ******************************************************************* | |
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| 128 | !! *** Category dependent state variables (prognostic) *** | |
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| 129 | !! ******************************************************************* | |
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| 130 | !! | |
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| 131 | !! ** Global variables | |
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| 132 | !! | |
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| 133 | !!-------------|-------------|---------------------------------|-------| |
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| 134 | !! a_i | a_i_b | Ice concentration | | |
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| 135 | !! v_i | - | Ice volume per unit area | m | |
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| 136 | !! v_s | - | Snow volume per unit area | m | |
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| 137 | !! smv_i | - | Sea ice salt content | ppt.m | |
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| 138 | !! oa_i ! - ! Sea ice areal age content | day | |
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| 139 | !! e_i ! - ! Ice enthalpy | 10^9 J| |
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| 140 | !! - ! q_i_b ! Ice enthalpy per unit vol. | J/m3 | |
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| 141 | !! e_s ! - ! Snow enthalpy | 10^9 J| |
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| 142 | !! - ! q_s_b ! Snow enthalpy per unit vol. | J/m3 | |
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| 143 | !! | |
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| 144 | !!-------------|-------------|---------------------------------|-------| |
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| 145 | !! | |
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| 146 | !! ** Equivalent variables | |
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| 147 | !! | |
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| 148 | !!-------------|-------------|---------------------------------|-------| |
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| 149 | !! | |
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| 150 | !! ht_i | ht_i_b | Ice thickness | m | |
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| 151 | !! ht_s ! ht_s_b | Snow depth | m | |
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| 152 | !! sm_i ! sm_i_b | Sea ice bulk salinity ! ppt | |
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| 153 | !! s_i ! s_i_b | Sea ice salinity profile ! ppt | |
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| 154 | !! o_i ! - | Sea ice Age ! days | |
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| 155 | !! t_i ! t_i_b | Sea ice temperature ! K | |
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| 156 | !! t_s ! t_s_b | Snow temperature ! K | |
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| 157 | !! t_su ! t_su_b | Sea ice surface temperature ! K | |
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| 158 | !! | |
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| 159 | !! notes: the ice model only sees a bulk (i.e., vertically averaged) | |
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| 160 | !! salinity, except in thermodynamic computations, for which | |
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| 161 | !! the salinity profile is computed as a function of bulk | |
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| 162 | !! salinity | |
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| 163 | !! | |
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| 164 | !! the sea ice surface temperature is not associated to any | |
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| 165 | !! heat content. Therefore, it is not a state variable and | |
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| 166 | !! does not have to be advected. Nevertheless, it has to be | |
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| 167 | !! computed to determine whether the ice is melting or not | |
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| 168 | !! | |
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| 169 | !! ******************************************************************* | |
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| 170 | !! *** Category-summed state variables (diagnostic) *** | |
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| 171 | !! ******************************************************************* | |
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| 172 | !! at_i | at_i_b | Total ice concentration | | |
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| 173 | !! vt_i | - | Total ice vol. per unit area | m | |
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| 174 | !! vt_s | - | Total snow vol. per unit ar. | m | |
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| 175 | !! smt_i | - | Mean sea ice salinity | ppt | |
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| 176 | !! tm_i | - | Mean sea ice temperature | K | |
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| 177 | !! ot_i ! - ! Sea ice areal age content | day | |
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| 178 | !! et_i ! - ! Total ice enthalpy | 10^9 J| |
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| 179 | !! et_s ! - ! Total snow enthalpy | 10^9 J| |
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| 180 | !! bv_i ! - ! Mean relative brine volume | ??? | |
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| 181 | !! | |
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| 182 | !! | |
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| 183 | !!===================================================================== |
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| 184 | |
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| 185 | LOGICAL, PUBLIC :: & |
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| 186 | con_i = .false. ! switch for conservation test |
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| 187 | |
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| 188 | !!-------------------------------------------------------------------------- |
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| 189 | !! * Share Module variables |
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| 190 | !!-------------------------------------------------------------------------- |
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| 191 | REAL(wp), PUBLIC :: rdt_ice !: ice time step |
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| 192 | |
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| 193 | INTEGER , PUBLIC :: & !!: ** ice-dynamic namelist (namicedyn) ** |
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| 194 | nbiter = 1 , & !: number of sub-time steps for relaxation |
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| 195 | nbitdr = 250 , & !: maximum number of iterations for relaxation |
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| 196 | nevp = 400 , & !: number of iterations for subcycling |
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| 197 | nlay_i = 5 !: number of layers in the ice |
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| 198 | |
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| 199 | REAL(wp), PUBLIC :: & !!: ** ice-dynamic namelist (namicedyn) ** |
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| 200 | epsd = 1.0e-20, & !: tolerance parameter for dynamic |
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| 201 | alpha = 0.5 , & !: coefficient for semi-implicit coriolis |
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| 202 | dm = 0.6e+03, & !: diffusion constant for dynamics |
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| 203 | om = 0.5 , & !: relaxation constant |
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| 204 | resl = 5.0e-05, & !: maximum value for the residual of relaxation |
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| 205 | cw = 5.0e-03, & !: drag coefficient for oceanic stress |
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| 206 | angvg = 0.0 , & !: turning angle for oceanic stress |
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| 207 | pstar = 1.0e+04, & !: determines ice strength (N/M), Hibler JPO79 |
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| 208 | c_rhg = 20.0 , & !: determines changes in ice strength |
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| 209 | etamn = 0.0e+07, & !: minimun value for viscosity : has to be 0 |
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| 210 | creepl = 2.0e-08, & !: creep limit : has to be under 1.0e-9 |
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| 211 | ecc = 2.0 , & !: eccentricity of the elliptical yield curve |
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| 212 | ahi0 = 350.e0 , & !: sea-ice hor. eddy diffusivity coeff. (m2/s) |
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| 213 | telast = 2880.0 , & !: timescale for elastic waves (s) !SB |
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| 214 | alphaevp = 1.0 , & !: coeficient of the internal stresses !SB |
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| 215 | unit_fac = 1.0e9 !: conversion factor for ice / snow enthalpy |
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| 216 | |
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| 217 | REAL(wp), PUBLIC :: & !!: ** ice-salinity namelist (namicesal) ** |
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| 218 | s_i_max = 20.0 , & !: maximum ice salinity (ppt) |
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| 219 | s_i_min = 0.1 , & !: minimum ice salinity (ppt) |
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| 220 | s_i_0 = 3.5 , & !: 1st sal. value for the computation of sal .prof. |
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| 221 | !: (ppt) |
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| 222 | s_i_1 = 4.5 , & !: 2nd sal. value for the computation of sal .prof. |
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| 223 | !: (ppt) |
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| 224 | sal_G = 5.00 , & !: restoring salinity for gravity drainage |
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| 225 | !: (ppt) |
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| 226 | sal_F = 2.50 , & !: restoring salinity for flushing |
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| 227 | !: (ppt) |
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| 228 | time_G = 1.728e+06,&!: restoring time constant for gravity drainage |
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| 229 | !: (= 20 days, in s) |
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| 230 | time_F = 8.640e+05,&!: restoring time constant for gravity drainage |
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| 231 | !: (= 10 days, in s) |
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| 232 | bulk_sal = 4.0 !: bulk salinity (ppt) in case of constant salinity |
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| 233 | |
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| 234 | INTEGER , PUBLIC :: & !!: ** ice-salinity namelist (namicesal) ** |
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| 235 | num_sal = 1 , & !: salinity configuration used in the model |
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| 236 | !: 1 - s constant in space and time |
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| 237 | !: 2 - prognostic salinity (s(z,t)) |
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| 238 | !: 3 - salinity profile, constant in time |
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| 239 | !: 4 - salinity variations affect only ice |
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| 240 | ! thermodynamics |
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| 241 | sal_prof = 1 , & !: salinity profile or not |
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| 242 | thcon_i_swi = 1 !: thermal conductivity of Untersteiner (1964) (1) or |
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| 243 | !: Pringle et al (2007) (2) |
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| 244 | |
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| 245 | REAL(wp), PUBLIC :: & !!: ** ice-mechanical redistribution namelist (namiceitdme) |
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| 246 | Cs = 0.25 , & !!: fraction of shearing energy contributing to ridging |
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| 247 | Cf = 17.0 , & !!: ratio of ridging work to PE loss |
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| 248 | fsnowrdg = 0.5 , & !!: fractional snow loss to the ocean during ridging |
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| 249 | fsnowrft = 0.5 , & !!: fractional snow loss to the ocean during ridging |
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| 250 | Gstar = 0.15 , & !!: fractional area of young ice contributing to ridging |
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| 251 | astar = 0.05 , & !!: equivalent of G* for an exponential participation function |
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| 252 | Hstar = 100.0 , & !!: thickness that determines the maximal thickness of ridged |
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| 253 | !!: ice |
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| 254 | hparmeter = 0.75, & !!: threshold thickness (m) for rafting / ridging |
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| 255 | Craft = 5.0 , & !!: coefficient for smoothness of the hyperbolic tangent in rafting |
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| 256 | ridge_por = 0.0 , & !!: initial porosity of ridges (0.3 regular value) |
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| 257 | sal_max_ridge = 15.0, & !!: maximum ridged ice salinity (ppt) |
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| 258 | betas = 1.0 , & !:: coef. for partitioning of snowfall between leads and sea ice |
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| 259 | kappa_i = 1.0 , & !!: coefficient for the extinction of radiation |
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| 260 | !!: Grenfell et al. (2006) (m-1) |
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| 261 | nconv_i_thd = 50 , & !!: maximal number of iterations for heat diffusion |
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| 262 | maxer_i_thd = 1.0e-4 !!: maximal tolerated error (C) for heat diffusion |
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| 263 | |
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| 264 | INTEGER , PUBLIC :: & !!: ** ice-mechanical redistribution namelist (namiceitdme) |
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| 265 | ridge_scheme_swi = 0, & !!: scheme used for ice ridging |
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| 266 | raftswi = 1, & !!: rafting of ice or not |
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| 267 | partfun_swi = 1, & !!: participation function Thorndike et al. JGR75 (0) |
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| 268 | !!: or Lipscomb et al. JGR07 (1) |
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| 269 | transfun_swi = 0, & !!: transfer function of Hibler, MWR80 (0) |
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| 270 | !!: or Lipscomb et al., 2007 (1) |
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| 271 | brinstren_swi = 0 !!: use brine volume to diminish ice strength |
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| 272 | |
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| 273 | REAL(wp), PUBLIC :: & !: |
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| 274 | usecc2 , & !: = 1.0 / ( ecc * ecc ) |
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| 275 | rhoco , & !: = rau0 * cw |
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| 276 | sangvg, cangvg , & !: sin and cos of the turning angle for ocean stress |
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| 277 | pstarh !: pstar / 2.0 |
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| 278 | |
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| 279 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 280 | u_oce, v_oce , & !: surface ocean velocity used in ice dynamics |
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| 281 | ahiu , ahiv , & !: hor. diffusivity coeff. at ocean U- and V-points (m2/s) |
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| 282 | pahu , pahv , & !: ice hor. eddy diffusivity coef. at ocean U- and V-points |
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| 283 | ust2s, hicol , & !: friction velocity, ice collection thickness accreted in leads |
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| 284 | strength , & !: ice strength |
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| 285 | strp1, strp2 , & !: strength at previous time steps |
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| 286 | stress1_i , & !: first stress tensor element |
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| 287 | stress2_i , & !: second stress tensor element |
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| 288 | stress12_i , & !: diagonal stress tensor element |
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| 289 | delta_i , & !: Delta factor for the ice rheology (see Flato and Hibler 95) [s-1] -> limrhg.F90 |
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| 290 | divu_i , & !: Divergence of the velocity field [s-1] -> limrhg.F90 |
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| 291 | shear_i !: Shear of the velocity field [s-1] -> limrhg.F90 |
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| 292 | |
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| 293 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 294 | firic , & !: IR flux over the ice (only used for outputs) |
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| 295 | fcsic , & !: Sensible heat flux over the ice (only used for outputs) |
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| 296 | fleic , & !: Latent heat flux over the ice (only used for outputs) |
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| 297 | qlatic , & !: latent flux |
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| 298 | rdvosif, & !: Variation of volume at surface (only used for outputs) |
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| 299 | rdvobif, & !: Variation of ice volume at the bottom ice (only used for outputs) |
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| 300 | fdvolif, & !: Total variation of ice volume (only used for outputs) |
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| 301 | rdvonif, & !: Lateral Variation of ice volume (only used for outputs) |
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| 302 | sist , & !: Average Sea-Ice Surface Temperature (Kelvin) |
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| 303 | icethi , & !: total ice thickness (for all categories) (only used for outputs) |
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| 304 | t_bo , & !: Sea-Ice bottom temperature (Kelvin) |
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| 305 | hicifp , & !: Ice production/melting |
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| 306 | !obsolete... can be removed |
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| 307 | frld , & !: Leads fraction = 1-a/totalarea REFERS TO LEAD FRACTION everywhere |
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| 308 | !: except in the OUTPUTS!!!! |
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| 309 | pfrld , & !: Leads fraction at previous time |
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| 310 | phicif , & !: Old ice thickness |
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| 311 | fbif , & !: Heat flux at the ice base |
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| 312 | rdmsnif, & !: Variation of snow mass |
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| 313 | rdmicif, & !: Variation of ice mass |
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| 314 | qldif , & !: heat balance of the lead (or of the open ocean) |
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| 315 | qcmif , & !: Energy needed to bring the ocean surface layer until its freezing |
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| 316 | fdtcn , & !: net downward heat flux from the ice to the ocean |
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| 317 | qdtcn , & !: energy from the ice to the ocean |
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| 318 | fstric , & !: transmitted solar radiation under ice |
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| 319 | fscmbq , & !: associated with lead chipotage with solar flux |
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| 320 | ffltbif, & !: Array linked with the max heat contained in brine pockets (?) |
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| 321 | fsbbq , & !: Also linked with the solar flux below the ice (?) |
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| 322 | qfvbq , & !: Array used to store energy in case of toral lateral ablation (?) |
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| 323 | dmgwi , & !: Variation of the mass of snow ice |
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| 324 | fsalt_res, & !: Residual salt flux due to correction of ice thickness |
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| 325 | fsbri , & !: Salt flux due to brine rejection |
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| 326 | fsalt_rpo, & !: Salt flux associated with porous ridged ice formation |
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| 327 | fheat_rpo, & !: Heat flux associated with porous ridged ice formation |
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| 328 | fhbri , & !: heat flux due to brine rejection |
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| 329 | fmmec , & !: Mass flux due to snow loss during compression |
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| 330 | fseqv , & !: Equivalent salt flux due to ice growth/melt |
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| 331 | fheat_res, & !: Residual heat flux due to correction of ice thickness |
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| 332 | fhmec !: Heat flux due to snow loss during compression |
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| 333 | |
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| 334 | ! temporary arrays for dummy version of the code |
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| 335 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 336 | dh_i_surf2D, dh_i_bott2D, fstbif, fsup2D, focea2D, q_s |
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| 337 | |
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| 338 | INTEGER, PUBLIC, DIMENSION(jpi, jpj, jpl) :: & !:: |
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| 339 | patho_case ! number of the pathological case (if any, of course) |
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| 340 | |
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| 341 | !!-------------------------------------------------------------------------- |
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| 342 | !! * Ice global state variables |
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| 343 | !!-------------------------------------------------------------------------- |
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| 344 | !! Variables defined for each ice category |
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| 345 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpl) :: & !: |
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| 346 | ht_i , & !: Ice thickness (m) |
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| 347 | a_i , & !: Ice fractional areas (concentration) |
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| 348 | v_i , & !: Ice volume per unit area (m) |
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| 349 | v_s , & !: Snow volume per unit area(m) |
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| 350 | ht_s , & !: Snow thickness (m) |
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| 351 | t_su , & !: Sea-Ice Surface Temperature (K) |
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| 352 | sm_i , & !: Sea-Ice Bulk salinity (ppt) |
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| 353 | smv_i , & !: Sea-Ice Bulk salinity times volume per area (ppt.m) |
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| 354 | !: this is an extensive variable that has to be transported |
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| 355 | o_i , & !: Sea-Ice Age (days) |
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| 356 | ov_i , & !: Sea-Ice Age times volume per area (days.m) |
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| 357 | oa_i !: Sea-Ice Age times ice area (days) |
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| 358 | |
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| 359 | !! Variables summed over all categories, or associated to |
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| 360 | !! all the ice in a single grid cell |
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| 361 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 362 | u_ice, v_ice, & !: two components of the ice velocity (m/s) |
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| 363 | tio_u, tio_v, & !: two components of the ice-ocean stress (N/m2) |
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| 364 | vt_i , & !: ice total volume per unit area (m) |
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| 365 | vt_s , & !: snow total volume per unit area (m) |
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| 366 | at_i , & !: ice total fractional area (ice concentration) |
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| 367 | ato_i , & !: total open water fractional area (1-at_i) |
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| 368 | et_i , & !: total ice heat content |
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| 369 | et_s , & !: total snow heat content |
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| 370 | ot_i , & !: mean age over all categories |
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| 371 | tm_i , & !: mean ice temperature over all categories |
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| 372 | bv_i , & !: brine volume averaged over all categories |
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| 373 | smt_i !: mean sea ice salinity averaged over all categories |
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| 374 | |
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| 375 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpm) :: & !: |
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| 376 | at_i_typ , & !: total area contained in each ice type |
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| 377 | vt_i_typ !: total volume contained in each ice type |
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| 378 | |
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| 379 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,nlay_s,jpl) :: & !: |
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| 380 | t_s, & !: Snow temperatures (K) |
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| 381 | e_s |
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| 382 | |
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| 383 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpl) :: & !: ! go to trash |
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| 384 | e_i_cat |
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| 385 | |
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| 386 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jkmax,jpl) :: & !: |
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| 387 | t_i, & !: Ice temperatures [ Kelvins ] |
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| 388 | e_i, & !: Ice thermal contents [ Joules*10^9 ] |
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| 389 | s_i !: Ice salinities |
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| 390 | |
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| 391 | !!-------------------------------------------------------------------------- |
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| 392 | !! * Moments for advection |
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| 393 | !!-------------------------------------------------------------------------- |
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| 394 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 395 | sxopw, syopw, sxxopw, syyopw, sxyopw !: open water in sea ice |
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| 396 | |
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| 397 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpl) :: & !: |
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| 398 | sxice, syice, sxxice, syyice, sxyice, & !: ice thickness moments for advection |
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| 399 | sxsn, sysn, sxxsn, syysn, sxysn, & !: snow thickness |
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| 400 | sxa, sya, sxxa, syya, sxya, & !: lead fraction |
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| 401 | sxc0, syc0, sxxc0, syyc0, sxyc0, & !: snow thermal content |
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| 402 | sxsal, sysal, sxxsal, syysal, sxysal, & !: ice salinity |
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| 403 | sxage, syage, sxxage, syyage, sxyage !: ice age |
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| 404 | |
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| 405 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jkmax,jpl) :: & !: |
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| 406 | sxe , sye , sxxe , syye , sxye !: ice layers heat content |
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| 407 | |
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| 408 | !!-------------------------------------------------------------------------- |
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| 409 | !! * Old values of global variables |
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| 410 | !!-------------------------------------------------------------------------- |
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| 411 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpl) :: & !: |
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| 412 | old_v_s, old_v_i, & !: snow and ice volumes |
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| 413 | old_a_i, old_smv_i, old_oa_i |
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| 414 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,nlay_s,jpl) :: & !: |
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| 415 | old_e_s !: snow heat content |
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| 416 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jkmax,jpl) :: & !: |
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| 417 | old_e_i !: ice temperatures |
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| 418 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: ice velocity (gv6 and gv7) |
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| 419 | old_u_ice, old_v_ice |
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| 420 | |
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| 421 | !!-------------------------------------------------------------------------- |
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| 422 | !! * Increment of global variables |
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| 423 | !!-------------------------------------------------------------------------- |
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| 424 | ! thd refers to changes induced by thermodynamics |
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| 425 | ! trp '' '' '' advection (transport of ice) |
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| 426 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpl) :: & !: |
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| 427 | d_a_i_thd , d_a_i_trp , & !: icefractions |
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| 428 | d_v_s_thd , d_v_s_trp, & !: snow volume |
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| 429 | d_v_i_thd , d_v_i_trp, & !: ice volume |
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| 430 | d_smv_i_thd, d_smv_i_trp, & |
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| 431 | d_sm_i_fl , d_sm_i_gd , & |
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| 432 | d_sm_i_se , d_sm_i_si , d_sm_i_la , & |
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| 433 | d_oa_i_thd , d_oa_i_trp, s_i_newice |
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| 434 | |
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| 435 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,nlay_s,jpl) :: & !: |
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| 436 | d_e_s_thd, d_e_s_trp |
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| 437 | |
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| 438 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jkmax,jpl) :: & !: |
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| 439 | d_e_i_thd, d_e_i_trp |
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| 440 | |
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| 441 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: ice velocity |
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| 442 | d_u_ice_dyn, d_v_ice_dyn |
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| 443 | |
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| 444 | !!-------------------------------------------------------------------------- |
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| 445 | !! * Ice thickness distribution variables |
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| 446 | !!-------------------------------------------------------------------------- |
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| 447 | ! REMOVE |
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| 448 | INTEGER, PUBLIC, DIMENSION(jpl) :: & !: |
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| 449 | ice_types !: Vector making the connection between types and categories |
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| 450 | |
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| 451 | INTEGER, PUBLIC, DIMENSION(jpm,2) :: & !: |
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| 452 | ice_cat_bounds !: Matrix containing the integer upper and |
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| 453 | !: lower boundaries of ice thickness categories |
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| 454 | |
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| 455 | ! REMOVE |
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| 456 | INTEGER, PUBLIC, DIMENSION(jpm) :: & !: |
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| 457 | ice_ncat_types !: Vector containing the number of thickness categories in each ice type |
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| 458 | |
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| 459 | REAL(wp), PUBLIC, DIMENSION(0:jpl) :: & !: |
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| 460 | hi_max !: Boundary of ice thickness categories in thickness space |
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| 461 | |
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| 462 | REAL(wp), PUBLIC, DIMENSION(jpl) :: & !: |
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| 463 | hi_mean !: Mean ice thickness in catgories |
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| 464 | |
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| 465 | ! REMOVE |
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| 466 | REAL(wp), PUBLIC, DIMENSION(0:jpl,jpm) :: & !: |
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| 467 | hi_max_typ !: Boundary of ice thickness categories |
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| 468 | !:in thickness space (same but specific for each ice type) |
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| 469 | |
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| 470 | !!-------------------------------------------------------------------------- |
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| 471 | !! * Ice Run |
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| 472 | !!-------------------------------------------------------------------------- |
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| 473 | !! Namelist namicerun read in iceini |
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| 474 | CHARACTER(len=32) , PUBLIC :: cn_icerst_in = "restart_ice_in" !: suffix of ice restart name (input) |
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| 475 | CHARACTER(len=32) , PUBLIC :: cn_icerst_out = "restart_ice" !: suffix of ice restart name (output) |
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| 476 | LOGICAL , PUBLIC :: ln_limdyn = .TRUE. !: flag for ice dynamics (T) or not (F) |
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| 477 | LOGICAL , PUBLIC :: ln_nicep = .TRUE. !: flag for sea-ice points output (T) or not (F) |
|---|
| 478 | REAL(wp) , PUBLIC :: hsndif = 0.e0 !: computation of temp. in snow (0) or not (9999) |
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| 479 | REAL(wp) , PUBLIC :: hicdif = 0.e0 !: computation of temp. in ice (0) or not (9999) |
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| 480 | REAL(wp) , PUBLIC :: cai = 1.40e-3 !: atmospheric drag over sea ice |
|---|
| 481 | REAL(wp) , PUBLIC :: cao = 1.00e-3 !: atmospheric drag over ocean |
|---|
| 482 | REAL(wp), DIMENSION(2), PUBLIC :: acrit = (/ 1.e-06 , 1.e-06 /) !: minimum fraction for leads in |
|---|
| 483 | ! !: north and south hemisphere |
|---|
| 484 | !!-------------------------------------------------------------------------- |
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| 485 | !! * Ice diagnostics |
|---|
| 486 | !!-------------------------------------------------------------------------- |
|---|
| 487 | !! Check if everything down here is necessary |
|---|
| 488 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: volume of ice formed in the leads |
|---|
| 489 | v_newice |
|---|
| 490 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpl) :: & !: thermodynamic growth rates |
|---|
| 491 | dv_dt_thd, & |
|---|
| 492 | izero, fstroc, fhbricat |
|---|
| 493 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & |
|---|
| 494 | diag_sni_gr, & ! snow ice growth |
|---|
| 495 | diag_lat_gr, & ! lateral ice growth |
|---|
| 496 | diag_bot_gr, & ! bottom ice growth |
|---|
| 497 | diag_dyn_gr, & ! dynamical ice growth |
|---|
| 498 | diag_bot_me, & ! vertical bottom melt |
|---|
| 499 | diag_sur_me ! vertical surface melt |
|---|
| 500 | INTEGER , PUBLIC :: jiindx, jjindx !: indexes of the debugging point |
|---|
| 501 | |
|---|
| 502 | #else |
|---|
| 503 | !!---------------------------------------------------------------------- |
|---|
| 504 | !! Default option Empty module NO LIM sea-ice model |
|---|
| 505 | !!---------------------------------------------------------------------- |
|---|
| 506 | #endif |
|---|
| 507 | |
|---|
| 508 | !!====================================================================== |
|---|
| 509 | END MODULE ice |
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