| 1 | MODULE ice |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE ice *** |
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| 4 | !! LIM-3 Sea Ice physics: diagnostics variables of ice defined in memory |
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| 5 | !!===================================================================== |
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| 6 | !! History : 3.0 ! 2008-03 (M. Vancoppenolle) original code LIM-3 |
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| 7 | !! 4.0 ! 2011-02 (G. Madec) dynamical allocation |
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| 8 | !!---------------------------------------------------------------------- |
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| 9 | #if defined key_lim3 |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! 'key_lim3' LIM-3 sea-ice model |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | USE in_out_manager ! I/O manager |
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| 14 | USE lib_mpp ! MPP library |
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| 15 | |
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| 16 | IMPLICIT NONE |
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| 17 | PRIVATE |
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| 18 | |
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| 19 | PUBLIC ice_alloc ! Called in sbc_lim_init |
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| 20 | |
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| 21 | !!====================================================================== |
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| 22 | !! LIM3 by the use of sweat, agile fingers and sometimes brain juice, |
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| 23 | !! was developed in Louvain-la-Neuve by : |
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| 24 | !! * Martin Vancoppenolle (UCL-ASTR, Belgium) |
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| 25 | !! * Sylvain Bouillon (UCL-ASTR, Belgium) |
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| 26 | !! * Miguel Angel Morales Maqueda (NOC-L, UK) |
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| 27 | !! |
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| 28 | !! Based on extremely valuable earlier work by |
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| 29 | !! * Thierry Fichefet |
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| 30 | !! * Hugues Goosse |
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| 31 | !! |
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| 32 | !! The following persons also contributed to the code in various ways |
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| 33 | !! * Gurvan Madec, Claude Talandier, Christian Ethe (LOCEAN, France) |
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| 34 | !! * Xavier Fettweis (UCL-ASTR), Ralph Timmermann (AWI, Germany) |
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| 35 | !! * Bill Lipscomb (LANL), Cecilia Bitz (UWa) |
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| 36 | !! and Elisabeth Hunke (LANL), USA. |
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| 37 | !! |
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| 38 | !! For more info, the interested user is kindly invited to consult the following references |
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| 39 | !! For model description and validation : |
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| 40 | !! * Vancoppenolle et al., Ocean Modelling, 2008a. |
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| 41 | !! * Vancoppenolle et al., Ocean Modelling, 2008b. |
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| 42 | !! For a specific description of EVP : |
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| 43 | !! * Bouillon et al., Ocean Modelling 2009. |
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| 44 | !! |
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| 45 | !! Or the reference manual, that should be available by 2011 |
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| 46 | !!====================================================================== |
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| 47 | !! | |
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| 48 | !! I C E S T A T E V A R I A B L E S | |
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| 49 | !! | |
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| 50 | !! Introduction : | |
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| 51 | !! -------------- | |
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| 52 | !! Every ice-covered grid cell is characterized by a series of state | |
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| 53 | !! variables. To account for unresolved spatial variability in ice | |
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| 54 | !! thickness, the ice cover in divided in ice thickness categories. | |
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| 55 | !! | |
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| 56 | !! Sea ice state variables depend on the ice thickness category | |
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| 57 | !! | |
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| 58 | !! Those variables are divided into two groups | |
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| 59 | !! * Extensive (or global) variables. | |
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| 60 | !! These are the variables that are transported by all means | |
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| 61 | !! * Intensive (or equivalent) variables. | |
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| 62 | !! These are the variables that are either physically more | |
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| 63 | !! meaningful and/or used in ice thermodynamics | |
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| 64 | !! | |
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| 65 | !! Routines in limvar.F90 perform conversions | |
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| 66 | !! - lim_var_glo2eqv : from global to equivalent variables | |
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| 67 | !! - lim_var_eqv2glo : from equivalent to global variables | |
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| 68 | !! | |
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| 69 | !! For various purposes, the sea ice state variables have sometimes | |
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| 70 | !! to be aggregated over all ice thickness categories. This operation | |
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| 71 | !! is done in : | |
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| 72 | !! - lim_var_agg | |
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| 73 | !! | |
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| 74 | !! in icestp.F90, the routines that compute the changes in the ice | |
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| 75 | !! state variables are called | |
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| 76 | !! - lim_dyn : ice dynamics | |
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| 77 | !! - lim_trp : ice transport | |
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| 78 | !! - lim_itd_me : mechanical redistribution (ridging and rafting) | |
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| 79 | !! - lim_thd : ice halo-thermodynamics | |
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| 80 | !! - lim_itd_th : thermodynamic changes in ice thickness distribution | |
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| 81 | !! and creation of new ice | |
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| 82 | !! | |
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| 83 | !! See the associated routines for more information | |
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| 84 | !! | |
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| 85 | !! List of ice state variables : | |
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| 86 | !! ----------------------------- | |
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| 87 | !! | |
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| 88 | !!-------------|-------------|---------------------------------|-------| |
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| 89 | !! name in | name in | meaning | units | |
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| 90 | !! 2D routines | 1D routines | | | |
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| 91 | !!-------------|-------------|---------------------------------|-------| |
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| 92 | !! | |
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| 93 | !! ******************************************************************* | |
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| 94 | !! *** Dynamical variables (prognostic) *** | |
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| 95 | !! ******************************************************************* | |
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| 96 | !! | |
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| 97 | !! u_ice | - | Comp. U of the ice velocity | m/s | |
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| 98 | !! v_ice | - | Comp. V of the ice velocity | m/s | |
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| 99 | !! | |
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| 100 | !! ******************************************************************* | |
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| 101 | !! *** Category dependent state variables (prognostic) *** | |
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| 102 | !! ******************************************************************* | |
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| 103 | !! | |
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| 104 | !! ** Global variables | |
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| 105 | !!-------------|-------------|---------------------------------|-------| |
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| 106 | !! a_i | a_i_1d | Ice concentration | | |
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| 107 | !! v_i | - | Ice volume per unit area | m | |
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| 108 | !! v_s | - | Snow volume per unit area | m | |
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| 109 | !! smv_i | - | Sea ice salt content | ppt.m | |
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| 110 | !! oa_i ! - ! Sea ice areal age content | day | |
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| 111 | !! e_i ! - ! Ice enthalpy | J/m2 | |
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| 112 | !! - ! q_i_1d ! Ice enthalpy per unit vol. | J/m3 | |
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| 113 | !! e_s ! - ! Snow enthalpy | J/m2 | |
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| 114 | !! - ! q_s_1d ! Snow enthalpy per unit vol. | J/m3 | |
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| 115 | !! | |
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| 116 | !!-------------|-------------|---------------------------------|-------| |
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| 117 | !! | |
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| 118 | !! ** Equivalent variables | |
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| 119 | !!-------------|-------------|---------------------------------|-------| |
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| 120 | !! | |
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| 121 | !! ht_i | ht_i_1d | Ice thickness | m | |
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| 122 | !! ht_s ! ht_s_1d | Snow depth | m | |
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| 123 | !! sm_i ! sm_i_1d | Sea ice bulk salinity ! ppt | |
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| 124 | !! s_i ! s_i_1d | Sea ice salinity profile ! ppt | |
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| 125 | !! o_i ! - | Sea ice Age ! days | |
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| 126 | !! t_i ! t_i_1d | Sea ice temperature ! K | |
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| 127 | !! t_s ! t_s_1d | Snow temperature ! K | |
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| 128 | !! t_su ! t_su_1d | Sea ice surface temperature ! K | |
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| 129 | !! | |
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| 130 | !! notes: the ice model only sees a bulk (i.e., vertically averaged) | |
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| 131 | !! salinity, except in thermodynamic computations, for which | |
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| 132 | !! the salinity profile is computed as a function of bulk | |
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| 133 | !! salinity | |
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| 134 | !! | |
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| 135 | !! the sea ice surface temperature is not associated to any | |
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| 136 | !! heat content. Therefore, it is not a state variable and | |
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| 137 | !! does not have to be advected. Nevertheless, it has to be | |
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| 138 | !! computed to determine whether the ice is melting or not | |
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| 139 | !! | |
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| 140 | !! ******************************************************************* | |
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| 141 | !! *** Category-summed state variables (diagnostic) *** | |
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| 142 | !! ******************************************************************* | |
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| 143 | !! at_i | at_i_1d | Total ice concentration | | |
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| 144 | !! vt_i | - | Total ice vol. per unit area | m | |
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| 145 | !! vt_s | - | Total snow vol. per unit ar. | m | |
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| 146 | !! smt_i | - | Mean sea ice salinity | ppt | |
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| 147 | !! tm_i | - | Mean sea ice temperature | K | |
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| 148 | !! ot_i ! - ! Sea ice areal age content | day | |
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| 149 | !! et_i ! - ! Total ice enthalpy | J/m2 | |
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| 150 | !! et_s ! - ! Total snow enthalpy | J/m2 | |
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| 151 | !! bv_i ! - ! Mean relative brine volume | ??? | |
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| 152 | !!===================================================================== |
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| 153 | |
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| 154 | LOGICAL, PUBLIC :: con_i = .false. ! switch for conservation test |
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| 155 | |
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| 156 | !!-------------------------------------------------------------------------- |
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| 157 | !! * Share Module variables |
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| 158 | !!-------------------------------------------------------------------------- |
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| 159 | INTEGER , PUBLIC :: nstart !: iteration number of the begining of the run |
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| 160 | INTEGER , PUBLIC :: nlast !: iteration number of the end of the run |
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| 161 | INTEGER , PUBLIC :: nitrun !: number of iteration |
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| 162 | INTEGER , PUBLIC :: numit !: iteration number |
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| 163 | REAL(wp), PUBLIC :: rdt_ice !: ice time step |
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| 164 | REAL(wp), PUBLIC :: r1_rdtice !: = 1. / rdt_ice |
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| 165 | |
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| 166 | ! !!** ice-thickness distribution namelist (namiceitd) ** |
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| 167 | INTEGER , PUBLIC :: jpl !: number of ice categories |
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| 168 | INTEGER , PUBLIC :: nlay_i !: number of ice layers |
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| 169 | INTEGER , PUBLIC :: nlay_s !: number of snow layers |
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| 170 | INTEGER , PUBLIC :: nn_catbnd !: categories distribution following: tanh function (1), or h^(-alpha) function (2) |
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| 171 | REAL(wp), PUBLIC :: rn_himean !: mean thickness of the domain (used to compute the distribution, nn_itdshp = 2 only) |
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| 172 | |
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| 173 | ! !!** ice-dynamics namelist (namicedyn) ** |
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| 174 | LOGICAL , PUBLIC :: ln_icestr_bvf !: use brine volume to diminish ice strength |
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| 175 | INTEGER , PUBLIC :: nn_icestr !: ice strength parameterization (0=Hibler79 1=Rothrock75) |
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| 176 | INTEGER , PUBLIC :: nn_nevp !: number of iterations for subcycling |
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| 177 | INTEGER , PUBLIC :: nn_ahi0 !: sea-ice hor. eddy diffusivity coeff. (3 ways of calculation) |
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| 178 | REAL(wp), PUBLIC :: rn_pe_rdg !: ridging work divided by pot. energy change in ridging, nn_icestr = 1 |
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| 179 | REAL(wp), PUBLIC :: rn_cio !: drag coefficient for oceanic stress |
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| 180 | REAL(wp), PUBLIC :: rn_pstar !: determines ice strength (N/M), Hibler JPO79 |
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| 181 | REAL(wp), PUBLIC :: rn_crhg !: determines changes in ice strength |
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| 182 | REAL(wp), PUBLIC :: rn_creepl !: creep limit : has to be under 1.0e-9 |
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| 183 | REAL(wp), PUBLIC :: rn_ecc !: eccentricity of the elliptical yield curve |
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| 184 | REAL(wp), PUBLIC :: rn_ahi0_ref !: sea-ice hor. eddy diffusivity coeff. (m2/s) |
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| 185 | REAL(wp), PUBLIC :: rn_relast !: ratio => telast/rdt_ice (1/3 or 1/9 depending on nb of subcycling nevp) |
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| 186 | |
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| 187 | ! !!** ice-salinity namelist (namicesal) ** |
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| 188 | REAL(wp), PUBLIC :: rn_simax !: maximum ice salinity [PSU] |
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| 189 | REAL(wp), PUBLIC :: rn_simin !: minimum ice salinity [PSU] |
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| 190 | REAL(wp), PUBLIC :: rn_sal_gd !: restoring salinity for gravity drainage [PSU] |
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| 191 | REAL(wp), PUBLIC :: rn_sal_fl !: restoring salinity for flushing [PSU] |
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| 192 | REAL(wp), PUBLIC :: rn_time_gd !: restoring time constant for gravity drainage (= 20 days) [s] |
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| 193 | REAL(wp), PUBLIC :: rn_time_fl !: restoring time constant for gravity drainage (= 10 days) [s] |
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| 194 | REAL(wp), PUBLIC :: rn_icesal !: bulk salinity (ppt) in case of constant salinity |
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| 195 | |
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| 196 | ! !!** ice-salinity namelist (namicesal) ** |
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| 197 | INTEGER , PUBLIC :: nn_icesal !: salinity configuration used in the model |
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| 198 | ! ! 1 - constant salinity in both space and time |
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| 199 | ! ! 2 - prognostic salinity (s(z,t)) |
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| 200 | ! ! 3 - salinity profile, constant in time |
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| 201 | INTEGER , PUBLIC :: nn_ice_thcon !: thermal conductivity: =0 Untersteiner (1964) ; =1 Pringle et al (2007) |
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| 202 | INTEGER , PUBLIC :: nn_monocat !: virtual ITD mono-category parameterizations (1) or not (0) |
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| 203 | |
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| 204 | ! !!** ice-mechanical redistribution namelist (namiceitdme) |
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| 205 | REAL(wp), PUBLIC :: rn_cs !: fraction of shearing energy contributing to ridging |
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| 206 | REAL(wp), PUBLIC :: rn_fsnowrdg !: fractional snow loss to the ocean during ridging |
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| 207 | REAL(wp), PUBLIC :: rn_fsnowrft !: fractional snow loss to the ocean during ridging |
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| 208 | REAL(wp), PUBLIC :: rn_gstar !: fractional area of young ice contributing to ridging |
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| 209 | REAL(wp), PUBLIC :: rn_astar !: equivalent of G* for an exponential participation function |
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| 210 | REAL(wp), PUBLIC :: rn_hstar !: thickness that determines the maximal thickness of ridged ice |
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| 211 | REAL(wp), PUBLIC :: rn_hraft !: threshold thickness (m) for rafting / ridging |
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| 212 | REAL(wp), PUBLIC :: rn_craft !: coefficient for smoothness of the hyperbolic tangent in rafting |
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| 213 | REAL(wp), PUBLIC :: rn_por_rdg !: initial porosity of ridges (0.3 regular value) |
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| 214 | REAL(wp), PUBLIC :: rn_betas !: coef. for partitioning of snowfall between leads and sea ice |
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| 215 | REAL(wp), PUBLIC :: rn_kappa_i !: coef. for the extinction of radiation Grenfell et al. (2006) [1/m] |
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| 216 | REAL(wp), PUBLIC :: nn_conv_dif !: maximal number of iterations for heat diffusion |
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| 217 | REAL(wp), PUBLIC :: rn_terr_dif !: maximal tolerated error (C) for heat diffusion |
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| 218 | |
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| 219 | ! !!** ice-mechanical redistribution namelist (namiceitdme) |
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| 220 | LOGICAL , PUBLIC :: ln_rafting !: rafting of ice or not |
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| 221 | INTEGER , PUBLIC :: nn_partfun !: participation function: =0 Thorndike et al. (1975), =1 Lipscomb et al. (2007) |
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| 222 | |
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| 223 | REAL(wp), PUBLIC :: usecc2 !: = 1.0 / ( rn_ecc * rn_ecc ) |
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| 224 | REAL(wp), PUBLIC :: rhoco !: = rau0 * cio |
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| 225 | |
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| 226 | ! !!** switch for presence of ice or not |
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| 227 | REAL(wp), PUBLIC :: rswitch |
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| 228 | |
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| 229 | ! !!** define some parameters |
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| 230 | REAL(wp), PUBLIC, PARAMETER :: epsi06 = 1.e-06_wp !: small number |
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| 231 | REAL(wp), PUBLIC, PARAMETER :: epsi10 = 1.e-10_wp !: small number |
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| 232 | REAL(wp), PUBLIC, PARAMETER :: epsi20 = 1.e-20_wp !: small number |
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| 233 | |
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| 234 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: u_oce, v_oce !: surface ocean velocity used in ice dynamics |
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| 235 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ahiu , ahiv !: hor. diffusivity coeff. at U- and V-points [m2/s] |
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| 236 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: pahu , pahv !: ice hor. eddy diffusivity coef. at U- and V-points |
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| 237 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ust2s, hicol !: friction velocity, ice collection thickness accreted in leads |
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| 238 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: strp1, strp2 !: strength at previous time steps |
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| 239 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: strength !: ice strength |
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| 240 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: stress1_i, stress2_i, stress12_i !: 1st, 2nd & diagonal stress tensor element |
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| 241 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: delta_i !: ice rheology elta factor (Flato & Hibler 95) [s-1] |
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| 242 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: divu_i !: Divergence of the velocity field [s-1] |
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| 243 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: shear_i !: Shear of the velocity field [s-1] |
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| 244 | ! |
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| 245 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sist !: Average Sea-Ice Surface Temperature [Kelvin] |
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| 246 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: icethi !: total ice thickness (for all categories) (diag only) |
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| 247 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: t_bo !: Sea-Ice bottom temperature [Kelvin] |
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| 248 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: frld !: Leads fraction = 1 - ice fraction |
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| 249 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: pfrld !: Leads fraction at previous time |
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| 250 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: phicif !: Old ice thickness |
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| 251 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: qlead !: heat balance of the lead (or of the open ocean) |
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| 252 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: fhtur !: net downward heat flux from the ice to the ocean |
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| 253 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: fhld !: heat flux from the lead used for bottom melting |
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| 254 | |
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| 255 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_snw !: snow-ocean mass exchange over 1 time step [kg/m2] |
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| 256 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_spr !: snow precipitation on ice over 1 time step [kg/m2] |
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| 257 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sub !: snow sublimation over 1 time step [kg/m2] |
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| 258 | |
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| 259 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_ice !: ice-ocean mass exchange over 1 time step [kg/m2] |
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| 260 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sni !: snow ice growth component of wfx_ice [kg/m2] |
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| 261 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_opw !: lateral ice growth component of wfx_ice [kg/m2] |
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| 262 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_bog !: bottom ice growth component of wfx_ice [kg/m2] |
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| 263 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_dyn !: dynamical ice growth component of wfx_ice [kg/m2] |
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| 264 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_bom !: bottom melt component of wfx_ice [kg/m2] |
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| 265 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sum !: surface melt component of wfx_ice [kg/m2] |
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| 266 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_res !: residual component of wfx_ice [kg/m2] |
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| 267 | |
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| 268 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: afx_tot !: ice concentration tendency (total) [s-1] |
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| 269 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: afx_thd !: ice concentration tendency (thermodynamics) [s-1] |
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| 270 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: afx_dyn !: ice concentration tendency (dynamics) [s-1] |
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| 271 | |
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| 272 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_bog !: salt flux due to ice growth/melt [PSU/m2/s] |
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| 273 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_bom !: salt flux due to ice growth/melt [PSU/m2/s] |
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| 274 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_sum !: salt flux due to ice growth/melt [PSU/m2/s] |
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| 275 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_sni !: salt flux due to ice growth/melt [PSU/m2/s] |
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| 276 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_opw !: salt flux due to ice growth/melt [PSU/m2/s] |
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| 277 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_bri !: salt flux due to brine rejection [PSU/m2/s] |
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| 278 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_dyn !: salt flux due to porous ridged ice formation [PSU/m2/s] |
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| 279 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_res !: residual salt flux due to correction of ice thickness [PSU/m2/s] |
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| 280 | |
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| 281 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_bog !: total heat flux causing bottom ice growth |
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| 282 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_bom !: total heat flux causing bottom ice melt |
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| 283 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_sum !: total heat flux causing surface ice melt |
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| 284 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_opw !: total heat flux causing open water ice formation |
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| 285 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_dif !: total heat flux causing Temp change in the ice |
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| 286 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_snw !: heat flux for snow melt |
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| 287 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_err !: heat flux error after heat diffusion |
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| 288 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_err_rem !: heat flux error after heat remapping |
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| 289 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_in !: heat flux available for thermo transformations |
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| 290 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_out !: heat flux remaining at the end of thermo transformations |
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| 291 | |
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| 292 | ! heat flux associated with ice-atmosphere mass exchange |
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| 293 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_sub !: heat flux for sublimation |
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| 294 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_spr !: heat flux of the snow precipitation |
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| 295 | |
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| 296 | ! heat flux associated with ice-ocean mass exchange |
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| 297 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_thd !: ice-ocean heat flux from thermo processes (limthd_dh) |
|---|
| 298 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_dyn !: ice-ocean heat flux from mecanical processes (limitd_me) |
|---|
| 299 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_res !: residual heat flux due to correction of ice thickness |
|---|
| 300 | |
|---|
| 301 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ftr_ice !: transmitted solar radiation under ice |
|---|
| 302 | |
|---|
| 303 | !!-------------------------------------------------------------------------- |
|---|
| 304 | !! * Ice global state variables |
|---|
| 305 | !!-------------------------------------------------------------------------- |
|---|
| 306 | !! Variables defined for each ice category |
|---|
| 307 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ht_i !: Ice thickness (m) |
|---|
| 308 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: a_i !: Ice fractional areas (concentration) |
|---|
| 309 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: v_i !: Ice volume per unit area (m) |
|---|
| 310 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: v_s !: Snow volume per unit area(m) |
|---|
| 311 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ht_s !: Snow thickness (m) |
|---|
| 312 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: t_su !: Sea-Ice Surface Temperature (K) |
|---|
| 313 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sm_i !: Sea-Ice Bulk salinity (ppt) |
|---|
| 314 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: smv_i !: Sea-Ice Bulk salinity times volume per area (ppt.m) |
|---|
| 315 | ! ! this is an extensive variable that has to be transported |
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| 316 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: o_i !: Sea-Ice Age (days) |
|---|
| 317 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ov_i !: Sea-Ice Age times volume per area (days.m) |
|---|
| 318 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: oa_i !: Sea-Ice Age times ice area (days) |
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| 319 | |
|---|
| 320 | !! Variables summed over all categories, or associated to all the ice in a single grid cell |
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| 321 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: u_ice, v_ice !: components of the ice velocity (m/s) |
|---|
| 322 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: tio_u, tio_v !: components of the ice-ocean stress (N/m2) |
|---|
| 323 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: vt_i , vt_s !: ice and snow total volume per unit area (m) |
|---|
| 324 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: at_i !: ice total fractional area (ice concentration) |
|---|
| 325 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ato_i !: =1-at_i ; total open water fractional area |
|---|
| 326 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: et_i , et_s !: ice and snow total heat content |
|---|
| 327 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ot_i !: mean age over all categories |
|---|
| 328 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: tm_i !: mean ice temperature over all categories |
|---|
| 329 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: bv_i !: brine volume averaged over all categories |
|---|
| 330 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: smt_i !: mean sea ice salinity averaged over all categories [PSU] |
|---|
| 331 | |
|---|
| 332 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:,:) :: t_s !: Snow temperatures [K] |
|---|
| 333 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:,:) :: e_s !: Snow ... |
|---|
| 334 | |
|---|
| 335 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:,:) :: t_i !: ice temperatures [K] |
|---|
| 336 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:,:) :: e_i !: ice thermal contents [J/m2] |
|---|
| 337 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:,:) :: s_i !: ice salinities [PSU] |
|---|
| 338 | |
|---|
| 339 | !!-------------------------------------------------------------------------- |
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| 340 | !! * Moments for advection |
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| 341 | !!-------------------------------------------------------------------------- |
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| 342 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sxopw, syopw, sxxopw, syyopw, sxyopw !: open water in sea ice |
|---|
| 343 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sxice, syice, sxxice, syyice, sxyice !: ice thickness |
|---|
| 344 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sxsn , sysn , sxxsn , syysn , sxysn !: snow thickness |
|---|
| 345 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sxa , sya , sxxa , syya , sxya !: lead fraction |
|---|
| 346 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sxc0 , syc0 , sxxc0 , syyc0 , sxyc0 !: snow thermal content |
|---|
| 347 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sxsal, sysal, sxxsal, syysal, sxysal !: ice salinity |
|---|
| 348 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sxage, syage, sxxage, syyage, sxyage !: ice age |
|---|
| 349 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:,:) :: sxe , sye , sxxe , syye , sxye !: ice layers heat content |
|---|
| 350 | |
|---|
| 351 | !!-------------------------------------------------------------------------- |
|---|
| 352 | !! * Old values of global variables |
|---|
| 353 | !!-------------------------------------------------------------------------- |
|---|
| 354 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: v_s_b, v_i_b !: snow and ice volumes |
|---|
| 355 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: a_i_b, smv_i_b, oa_i_b !: |
|---|
| 356 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:,:) :: e_s_b !: snow heat content |
|---|
| 357 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:,:) :: e_i_b !: ice temperatures |
|---|
| 358 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: u_ice_b, v_ice_b !: ice velocity |
|---|
| 359 | |
|---|
| 360 | !!-------------------------------------------------------------------------- |
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| 361 | !! * Ice thickness distribution variables |
|---|
| 362 | !!-------------------------------------------------------------------------- |
|---|
| 363 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: hi_max !: Boundary of ice thickness categories in thickness space |
|---|
| 364 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: hi_mean !: Mean ice thickness in catgories |
|---|
| 365 | |
|---|
| 366 | !!-------------------------------------------------------------------------- |
|---|
| 367 | !! * Ice Run |
|---|
| 368 | !!-------------------------------------------------------------------------- |
|---|
| 369 | ! !!: ** Namelist namicerun read in sbc_lim_init ** |
|---|
| 370 | CHARACTER(len=32) , PUBLIC :: cn_icerst_in !: suffix of ice restart name (input) |
|---|
| 371 | CHARACTER(len=32) , PUBLIC :: cn_icerst_out !: suffix of ice restart name (output) |
|---|
| 372 | LOGICAL , PUBLIC :: ln_limdyn !: flag for ice dynamics (T) or not (F) |
|---|
| 373 | LOGICAL , PUBLIC :: ln_nicep !: flag for sea-ice points output (T) or not (F) |
|---|
| 374 | REAL(wp) , PUBLIC :: rn_amax !: maximum ice concentration |
|---|
| 375 | ! |
|---|
| 376 | !!-------------------------------------------------------------------------- |
|---|
| 377 | !! * Ice diagnostics |
|---|
| 378 | !!-------------------------------------------------------------------------- |
|---|
| 379 | ! Increment of global variables |
|---|
| 380 | ! thd refers to changes induced by thermodynamics |
|---|
| 381 | ! trp '' '' '' advection (transport of ice) |
|---|
| 382 | LOGICAL , PUBLIC :: ln_limdiahsb !: flag for ice diag (T) or not (F) |
|---|
| 383 | LOGICAL , PUBLIC :: ln_limdiaout !: flag for ice diag (T) or not (F) |
|---|
| 384 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: diag_trp_vi !: transport of ice volume |
|---|
| 385 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: diag_trp_vs !: transport of snw volume |
|---|
| 386 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: diag_trp_ei !: transport of ice enthalpy (W/m2) |
|---|
| 387 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: diag_trp_es !: transport of snw enthalpy (W/m2) |
|---|
| 388 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: diag_trp_smv !: transport of salt content |
|---|
| 389 | ! |
|---|
| 390 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: diag_heat_dhc !: snw/ice heat content variation [W/m2] |
|---|
| 391 | ! |
|---|
| 392 | INTEGER , PUBLIC :: jiindx, jjindx !: indexes of the debugging point |
|---|
| 393 | |
|---|
| 394 | !!---------------------------------------------------------------------- |
|---|
| 395 | !! NEMO/LIM3 4.0 , UCL - NEMO Consortium (2010) |
|---|
| 396 | !! $Id$ |
|---|
| 397 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
|---|
| 398 | !!---------------------------------------------------------------------- |
|---|
| 399 | CONTAINS |
|---|
| 400 | |
|---|
| 401 | FUNCTION ice_alloc() |
|---|
| 402 | !!----------------------------------------------------------------- |
|---|
| 403 | !! *** Routine ice_alloc_2 *** |
|---|
| 404 | !!----------------------------------------------------------------- |
|---|
| 405 | INTEGER :: ice_alloc |
|---|
| 406 | ! |
|---|
| 407 | INTEGER :: ierr(17), ii |
|---|
| 408 | !!----------------------------------------------------------------- |
|---|
| 409 | |
|---|
| 410 | ierr(:) = 0 |
|---|
| 411 | |
|---|
| 412 | ! What could be one huge allocate statement is broken-up to try to |
|---|
| 413 | ! stay within Fortran's max-line length limit. |
|---|
| 414 | ii = 1 |
|---|
| 415 | ALLOCATE( u_oce (jpi,jpj) , v_oce (jpi,jpj) , & |
|---|
| 416 | & ahiu (jpi,jpj) , ahiv (jpi,jpj) , & |
|---|
| 417 | & pahu (jpi,jpj) , pahv (jpi,jpj) , & |
|---|
| 418 | & ust2s (jpi,jpj) , hicol (jpi,jpj) , & |
|---|
| 419 | & strp1 (jpi,jpj) , strp2 (jpi,jpj) , strength (jpi,jpj) , & |
|---|
| 420 | & stress1_i(jpi,jpj) , stress2_i(jpi,jpj) , stress12_i(jpi,jpj) , & |
|---|
| 421 | & delta_i (jpi,jpj) , divu_i (jpi,jpj) , shear_i (jpi,jpj) , STAT=ierr(ii) ) |
|---|
| 422 | |
|---|
| 423 | ii = ii + 1 |
|---|
| 424 | ALLOCATE( sist (jpi,jpj) , icethi (jpi,jpj) , t_bo (jpi,jpj) , & |
|---|
| 425 | & frld (jpi,jpj) , pfrld (jpi,jpj) , phicif (jpi,jpj) , & |
|---|
| 426 | & wfx_snw(jpi,jpj) , wfx_ice(jpi,jpj) , wfx_sub(jpi,jpj) , & |
|---|
| 427 | & wfx_bog(jpi,jpj) , wfx_dyn(jpi,jpj) , wfx_bom(jpi,jpj) , wfx_sum(jpi,jpj) , & |
|---|
| 428 | & wfx_res(jpi,jpj) , wfx_sni(jpi,jpj) , wfx_opw(jpi,jpj) , wfx_spr(jpi,jpj) , qlead (jpi,jpj) , & |
|---|
| 429 | & afx_tot(jpi,jpj) , afx_thd(jpi,jpj), afx_dyn(jpi,jpj) , & |
|---|
| 430 | & fhtur (jpi,jpj) , ftr_ice(jpi,jpj,jpl), & |
|---|
| 431 | & sfx_res(jpi,jpj) , sfx_bri(jpi,jpj) , sfx_dyn(jpi,jpj) , & |
|---|
| 432 | & sfx_bog(jpi,jpj) , sfx_bom(jpi,jpj) , sfx_sum(jpi,jpj) , sfx_sni(jpi,jpj) , sfx_opw(jpi,jpj) , & |
|---|
| 433 | & hfx_res(jpi,jpj) , hfx_snw(jpi,jpj) , hfx_sub(jpi,jpj) , hfx_err(jpi,jpj) , hfx_err_rem(jpi,jpj), & |
|---|
| 434 | & hfx_in (jpi,jpj) , hfx_out(jpi,jpj) , fhld(jpi,jpj) , & |
|---|
| 435 | & hfx_sum(jpi,jpj) , hfx_bom(jpi,jpj) , hfx_bog(jpi,jpj) , hfx_dif(jpi,jpj) , hfx_opw(jpi,jpj) , & |
|---|
| 436 | & hfx_thd(jpi,jpj) , hfx_dyn(jpi,jpj) , hfx_spr(jpi,jpj) , STAT=ierr(ii) ) |
|---|
| 437 | |
|---|
| 438 | ! * Ice global state variables |
|---|
| 439 | ii = ii + 1 |
|---|
| 440 | ALLOCATE( ht_i (jpi,jpj,jpl) , a_i (jpi,jpj,jpl) , v_i (jpi,jpj,jpl) , & |
|---|
| 441 | & v_s (jpi,jpj,jpl) , ht_s (jpi,jpj,jpl) , t_su (jpi,jpj,jpl) , & |
|---|
| 442 | & sm_i (jpi,jpj,jpl) , smv_i(jpi,jpj,jpl) , o_i (jpi,jpj,jpl) , & |
|---|
| 443 | & ov_i (jpi,jpj,jpl) , oa_i (jpi,jpj,jpl) , STAT=ierr(ii) ) |
|---|
| 444 | ii = ii + 1 |
|---|
| 445 | ALLOCATE( u_ice(jpi,jpj) , v_ice(jpi,jpj) , tio_u(jpi,jpj) , tio_v(jpi,jpj) , & |
|---|
| 446 | & vt_i (jpi,jpj) , vt_s (jpi,jpj) , at_i (jpi,jpj) , ato_i(jpi,jpj) , & |
|---|
| 447 | & et_i (jpi,jpj) , et_s (jpi,jpj) , ot_i (jpi,jpj) , tm_i (jpi,jpj) , & |
|---|
| 448 | & bv_i (jpi,jpj) , smt_i(jpi,jpj) , STAT=ierr(ii) ) |
|---|
| 449 | ii = ii + 1 |
|---|
| 450 | ALLOCATE( t_s(jpi,jpj,nlay_s,jpl) , & |
|---|
| 451 | & e_s(jpi,jpj,nlay_s,jpl) , STAT=ierr(ii) ) |
|---|
| 452 | ii = ii + 1 |
|---|
| 453 | ALLOCATE( t_i(jpi,jpj,nlay_i+1,jpl) , e_i(jpi,jpj,nlay_i+1,jpl) , s_i(jpi,jpj,nlay_i+1,jpl) , STAT=ierr(ii) ) |
|---|
| 454 | |
|---|
| 455 | ! * Moments for advection |
|---|
| 456 | ii = ii + 1 |
|---|
| 457 | ALLOCATE( sxopw(jpi,jpj) , syopw(jpi,jpj) , sxxopw(jpi,jpj) , syyopw(jpi,jpj) , sxyopw(jpi,jpj) , STAT=ierr(ii) ) |
|---|
| 458 | ii = ii + 1 |
|---|
| 459 | ALLOCATE( sxice(jpi,jpj,jpl) , syice(jpi,jpj,jpl) , sxxice(jpi,jpj,jpl) , syyice(jpi,jpj,jpl) , sxyice(jpi,jpj,jpl) , & |
|---|
| 460 | & sxsn (jpi,jpj,jpl) , sysn (jpi,jpj,jpl) , sxxsn (jpi,jpj,jpl) , syysn (jpi,jpj,jpl) , sxysn (jpi,jpj,jpl) , & |
|---|
| 461 | & STAT=ierr(ii) ) |
|---|
| 462 | ii = ii + 1 |
|---|
| 463 | ALLOCATE( sxa (jpi,jpj,jpl) , sya (jpi,jpj,jpl) , sxxa (jpi,jpj,jpl) , syya (jpi,jpj,jpl) , sxya (jpi,jpj,jpl) , & |
|---|
| 464 | & sxc0 (jpi,jpj,jpl) , syc0 (jpi,jpj,jpl) , sxxc0 (jpi,jpj,jpl) , syyc0 (jpi,jpj,jpl) , sxyc0 (jpi,jpj,jpl) , & |
|---|
| 465 | & sxsal(jpi,jpj,jpl) , sysal(jpi,jpj,jpl) , sxxsal(jpi,jpj,jpl) , syysal(jpi,jpj,jpl) , sxysal(jpi,jpj,jpl) , & |
|---|
| 466 | & sxage(jpi,jpj,jpl) , syage(jpi,jpj,jpl) , sxxage(jpi,jpj,jpl) , syyage(jpi,jpj,jpl) , sxyage(jpi,jpj,jpl) , & |
|---|
| 467 | & STAT=ierr(ii) ) |
|---|
| 468 | ii = ii + 1 |
|---|
| 469 | ALLOCATE( sxe (jpi,jpj,nlay_i+1,jpl) , sye (jpi,jpj,nlay_i+1,jpl) , sxxe(jpi,jpj,nlay_i+1,jpl) , & |
|---|
| 470 | & syye(jpi,jpj,nlay_i+1,jpl) , sxye(jpi,jpj,nlay_i+1,jpl) , STAT=ierr(ii) ) |
|---|
| 471 | |
|---|
| 472 | ! * Old values of global variables |
|---|
| 473 | ii = ii + 1 |
|---|
| 474 | ALLOCATE( v_s_b (jpi,jpj,jpl) , v_i_b (jpi,jpj,jpl) , e_s_b(jpi,jpj,nlay_s,jpl) , & |
|---|
| 475 | & a_i_b (jpi,jpj,jpl) , smv_i_b(jpi,jpj,jpl) , e_i_b(jpi,jpj,nlay_i+1 ,jpl) , & |
|---|
| 476 | & oa_i_b (jpi,jpj,jpl) , & |
|---|
| 477 | & u_ice_b(jpi,jpj) , v_ice_b(jpi,jpj) , STAT=ierr(ii) ) |
|---|
| 478 | |
|---|
| 479 | ! * Ice thickness distribution variables |
|---|
| 480 | ii = ii + 1 |
|---|
| 481 | ALLOCATE( hi_max(0:jpl), hi_mean(jpl), STAT=ierr(ii) ) |
|---|
| 482 | |
|---|
| 483 | ! * Ice diagnostics |
|---|
| 484 | ii = ii + 1 |
|---|
| 485 | ALLOCATE( diag_trp_vi(jpi,jpj), diag_trp_vs (jpi,jpj), diag_trp_ei (jpi,jpj), & |
|---|
| 486 | & diag_trp_es(jpi,jpj), diag_trp_smv(jpi,jpj), diag_heat_dhc(jpi,jpj), STAT=ierr(ii) ) |
|---|
| 487 | |
|---|
| 488 | ice_alloc = MAXVAL( ierr(:) ) |
|---|
| 489 | IF( ice_alloc /= 0 ) CALL ctl_warn('ice_alloc_2: failed to allocate arrays.') |
|---|
| 490 | ! |
|---|
| 491 | END FUNCTION ice_alloc |
|---|
| 492 | |
|---|
| 493 | #else |
|---|
| 494 | !!---------------------------------------------------------------------- |
|---|
| 495 | !! Default option Empty module NO LIM sea-ice model |
|---|
| 496 | !!---------------------------------------------------------------------- |
|---|
| 497 | #endif |
|---|
| 498 | |
|---|
| 499 | !!====================================================================== |
|---|
| 500 | END MODULE ice |
|---|
