[8321] | 1 | MODULE icestp |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE icestp *** |
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| 4 | !! Surface module : update the ocean surface boundary condition over ice |
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| 5 | !! & covered area using LIM sea-ice model |
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| 6 | !! Sea-Ice model : LIM-3 Sea ice model time-stepping |
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| 7 | !!===================================================================== |
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| 8 | !! History : 2.0 ! 2006-12 (M. Vancoppenolle) Original code |
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| 9 | !! 3.0 ! 2008-02 (C. Talandier) Surface module from icestp.F90 |
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[8411] | 10 | !! - ! 2008-04 (G. Madec) sltyle and ice_ctl routine |
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[8321] | 11 | !! 3.3 ! 2010-11 (G. Madec) ice-ocean stress always computed at each ocean time-step |
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| 12 | !! 3.4 ! 2011-01 (A Porter) dynamical allocation |
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[8426] | 13 | !! - ! 2012-10 (C. Rousset) add ice_dia |
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[8321] | 14 | !! 3.6 ! 2014-07 (M. Vancoppenolle, G. Madec, O. Marti) revise coupled interface |
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| 15 | !! 4.0 ! 2016-06 (L. Brodeau) new unified bulk routine (based on AeroBulk) |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | #if defined key_lim3 |
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| 18 | !!---------------------------------------------------------------------- |
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[8486] | 19 | !! 'key_lim3' LIM 3.0 sea-ice model |
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[8321] | 20 | !!---------------------------------------------------------------------- |
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[8486] | 21 | !! ice_stp : sea-ice model time-stepping and update ocean surf. boundary cond. over ice-covered area |
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| 22 | !! ice_init : |
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| 23 | !! ice_run_init : |
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[8321] | 24 | !!---------------------------------------------------------------------- |
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[8486] | 25 | USE oce ! ocean dynamics and tracers |
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| 26 | USE dom_oce ! ocean space and time domain |
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| 27 | USE c1d ! 1D vertical configuration |
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| 28 | USE ice ! sea-ice: variables |
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| 29 | USE ice1D ! sea-ice: thermodynamical 1D variables |
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[8321] | 30 | ! |
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[8486] | 31 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 32 | USE sbc_ice ! Surface boundary condition: ice fields |
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| 33 | USE iceforcing ! sea-ice: Surface boundary condition !!gm why not icesbc module name |
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[8321] | 34 | ! |
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[8486] | 35 | USE phycst ! Define parameters for the routines |
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| 36 | USE eosbn2 ! equation of state |
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| 37 | USE icerhg ! sea-ice: rheology |
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| 38 | USE iceadv ! sea-ice: advection |
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| 39 | USE icethd ! sea-ice: thermodynamics |
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| 40 | USE icerdgrft ! sea-ice: ridging/rafting |
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| 41 | USE iceupdate ! sea-ice: sea surface boundary condition update |
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| 42 | USE icedia ! sea-ice: budget diagnostics |
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| 43 | USE icewri ! sea-ice: outputs |
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| 44 | USE icerst ! sea-ice: restarts |
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| 45 | USE icecor ! sea-ice: corrections |
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| 46 | USE icevar ! sea-ice: operations |
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| 47 | USE icectl ! sea-ice: control |
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[8321] | 48 | ! MV MP 2016 |
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[8486] | 49 | USE limmp ! sea-ice: melt ponds |
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[8321] | 50 | ! END MV MP 2016 |
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[8486] | 51 | USE iceist ! sea-ice: initial state |
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| 52 | USE icethd_sal ! sea-ice: thermodynamics and salinity |
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[8321] | 53 | ! |
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[8486] | 54 | USE bdy_oce , ONLY : ln_bdy ! flag for bdy |
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| 55 | USE bdyice ! unstructured open boundary data for sea-ice |
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[8321] | 56 | # if defined key_agrif |
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| 57 | USE agrif_ice |
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| 58 | USE agrif_lim3_update |
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| 59 | USE agrif_lim3_interp |
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| 60 | # endif |
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[8486] | 61 | ! |
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| 62 | USE in_out_manager ! I/O manager |
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| 63 | USE iom ! I/O manager library |
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| 64 | USE prtctl ! Print control |
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| 65 | USE lib_fortran ! |
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| 66 | USE lbclnk ! lateral boundary condition - MPP link |
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| 67 | USE lib_mpp ! MPP library |
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| 68 | USE timing ! Timing |
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[8321] | 69 | |
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| 70 | IMPLICIT NONE |
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| 71 | PRIVATE |
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| 72 | |
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[8486] | 73 | PUBLIC ice_stp ! called by sbcmod.F90 |
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| 74 | PUBLIC ice_init ! called by sbcmod.F90 |
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[8321] | 75 | |
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[8486] | 76 | INTEGER :: nice_dyn ! choice of the type of advection scheme |
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| 77 | ! ! associated indices: |
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| 78 | INTEGER, PARAMETER :: np_dynNO = 0 ! no ice dynamics and ice advection |
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| 79 | INTEGER, PARAMETER :: np_dynFULL = 1 ! full ice dynamics (rheology + advection + ridging/rafting + correction) |
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| 80 | INTEGER, PARAMETER :: np_dyn = 2 ! no ridging/rafting (rheology + advection + correction) |
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| 81 | INTEGER, PARAMETER :: np_dynPURE = 3 ! pure dynamics (rheology + advection) |
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| 82 | |
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[8321] | 83 | !! * Substitutions |
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| 84 | # include "vectopt_loop_substitute.h90" |
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| 85 | !!---------------------------------------------------------------------- |
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[8486] | 86 | !! NEMO/ICE 4.0 , NEMO Consortium (2017) |
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[8321] | 87 | !! $Id: icestp.F90 8319 2017-07-11 15:00:44Z clem $ |
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| 88 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 89 | !!---------------------------------------------------------------------- |
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| 90 | CONTAINS |
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| 91 | |
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| 92 | SUBROUTINE ice_stp( kt, ksbc ) |
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| 93 | !!--------------------------------------------------------------------- |
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| 94 | !! *** ROUTINE ice_stp *** |
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| 95 | !! |
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[8486] | 96 | !! ** Purpose : sea-ice model time-stepping and update ocean surface |
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| 97 | !! boundary condition over ice-covered area |
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[8321] | 98 | !! |
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| 99 | !! ** Method : ice model time stepping |
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| 100 | !! - call the ice dynamics routine |
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| 101 | !! - call the ice advection/diffusion routine |
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| 102 | !! - call the ice thermodynamics routine |
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| 103 | !! - call the routine that computes mass and |
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| 104 | !! heat fluxes at the ice/ocean interface |
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| 105 | !! - save the outputs |
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| 106 | !! - save the outputs for restart when necessary |
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| 107 | !! |
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| 108 | !! ** Action : - time evolution of the LIM sea-ice model |
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| 109 | !! - update all sbc variables below sea-ice: |
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| 110 | !! utau, vtau, taum, wndm, qns , qsr, emp , sfx |
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| 111 | !!--------------------------------------------------------------------- |
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| 112 | INTEGER, INTENT(in) :: kt ! ocean time step |
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[8486] | 113 | INTEGER, INTENT(in) :: ksbc ! flux formulation (user defined, bulk, or Pure Coupled) |
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| 114 | ! |
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| 115 | INTEGER :: jl ! dummy loop index |
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[8321] | 116 | !!---------------------------------------------------------------------- |
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[8486] | 117 | ! |
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[8321] | 118 | IF( nn_timing == 1 ) CALL timing_start('ice_stp') |
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[8486] | 119 | ! |
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| 120 | ! !-----------------------! |
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| 121 | IF( MOD( kt-1, nn_fsbc ) == 0 ) THEN ! --- Ice time step --- ! |
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| 122 | ! !-----------------------! |
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| 123 | ! |
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| 124 | kt_ice = kt ! Ice model time step |
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| 125 | ! |
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[8321] | 126 | # if defined key_agrif |
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| 127 | IF( .NOT. Agrif_Root() ) lim_nbstep = MOD( lim_nbstep, Agrif_irhot() * Agrif_Parent(nn_fsbc) / nn_fsbc ) + 1 |
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| 128 | # endif |
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| 129 | |
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[8486] | 130 | ! ! mean surface ocean current at ice velocity point |
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[8321] | 131 | u_oce(:,:) = ssu_m(:,:) * umask(:,:,1) |
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| 132 | v_oce(:,:) = ssv_m(:,:) * vmask(:,:,1) |
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[8486] | 133 | !!gm the umask, vmask above is useless as ssu_m, ssv_m are build from masked un,vn (used t be here for B-grid sea-ice) |
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[8321] | 134 | |
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[8486] | 135 | ! ! masked sea surface freezing temperature [Kelvin] (set to rt0 over land) |
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[8321] | 136 | CALL eos_fzp( sss_m(:,:) , t_bo(:,:) ) |
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| 137 | t_bo(:,:) = ( t_bo(:,:) + rt0 ) * tmask(:,:,1) + rt0 * ( 1._wp - tmask(:,:,1) ) |
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| 138 | ! |
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[8486] | 139 | CALL ice_bef ! Store previous ice values |
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| 140 | ! |
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[8321] | 141 | !------------------------------------------------! |
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| 142 | ! --- Dynamical coupling with the atmosphere --- ! |
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| 143 | !------------------------------------------------! |
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[8486] | 144 | ! It provides the following fields used in sea ice model: |
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[8404] | 145 | ! utau_ice, vtau_ice = surface ice stress [N/m2] |
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[8486] | 146 | !------------------------------------------------! |
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| 147 | CALL ice_forcing_tau( kt, ksbc, utau_ice, vtau_ice ) |
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[8404] | 148 | |
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[8486] | 149 | !-------------------------------------! |
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| 150 | ! --- ice dynamics and advection --- ! |
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| 151 | !-------------------------------------! |
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| 152 | CALL ice_diag0 ! set diag of mass, heat and salt fluxes to 0 |
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| 153 | CALL ice_rst_opn( kt ) ! Open Ice restart file (if necessary) |
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[8321] | 154 | ! |
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[8486] | 155 | SELECT CASE( nice_dyn ) |
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| 156 | CASE ( np_dynFULL ) !== all dynamical processes ==! |
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| 157 | CALL ice_rhg ( kt ) ! -- rheology |
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| 158 | CALL ice_adv ( kt ) ! -- advection of ice |
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| 159 | CALL ice_rdgrft( kt ) ! -- ridging/rafting |
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| 160 | CALL ice_cor ( kt , 1 ) ! -- Corrections |
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| 161 | CASE ( np_dyn ) !== pure dynamics only ==! (no ridging/rafting) (nono cat. case 2) |
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| 162 | CALL ice_rhg ( kt ) ! -- rheology |
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| 163 | CALL ice_adv ( kt ) ! -- advection of ice |
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| 164 | CALL ice_cor ( kt , 1 ) ! -- Corrections |
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| 165 | CASE ( np_dynPURE ) !== pure dynamics only ==! (nn_limdyn= 0 or 1 ) |
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| 166 | CALL ice_rhg ( kt ) ! -- rheology |
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| 167 | CALL ice_adv ( kt ) ! -- advection of ice |
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| 168 | END SELECT |
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| 169 | ! |
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| 170 | ! !== lateral boundary conditions ==! |
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[8321] | 171 | #if defined key_agrif |
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[8486] | 172 | IF( .NOT. Agrif_Root() ) CALL agrif_interp_lim3('T') ! -- AGRIF |
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[8321] | 173 | #endif |
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[8486] | 174 | IF( ln_limthd .AND. ln_bdy ) CALL bdy_ice( kt ) ! -- bdy ice thermo |
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| 175 | ! |
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| 176 | ! |
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| 177 | ! !== previous lead fraction and ice volume for flux calculations |
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| 178 | ! |
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| 179 | CALL ice_var_glo2eqv ! ht_i and ht_s for ice albedo calculation |
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| 180 | CALL ice_var_agg(1) ! at_i for coupling |
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| 181 | CALL ice_bef ! Store previous ice values |
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[8321] | 182 | |
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| 183 | !------------------------------------------------------! |
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| 184 | ! --- Thermodynamical coupling with the atmosphere --- ! |
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| 185 | !------------------------------------------------------! |
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[8404] | 186 | ! It provides the following fields used in sea ice model: |
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[8486] | 187 | ! fr1_i0 , fr2_i0 = 1sr & 2nd fraction of qsr penetration in ice [%] |
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| 188 | ! emp_oce , emp_ice = E-P over ocean and sea ice [Kg/m2/s] |
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| 189 | ! sprecip = solid precipitation [Kg/m2/s] |
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| 190 | ! evap_ice = sublimation [Kg/m2/s] |
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| 191 | ! qsr_tot , qns_tot = solar & non solar heat flux (total) [W/m2] |
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| 192 | ! qsr_ice , qns_ice = solar & non solar heat flux over ice [W/m2] |
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| 193 | ! dqns_ice = non solar heat sensistivity [W/m2] |
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| 194 | ! qemp_oce, qemp_ice, = sensible heat (associated with evap & precip) [W/m2] |
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| 195 | ! qprec_ice, qevap_ice |
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| 196 | !------------------------------------------------------! |
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| 197 | CALL ice_forcing_flx( kt, ksbc ) |
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[8321] | 198 | |
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| 199 | !----------------------------! |
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| 200 | ! --- ice thermodynamics --- ! |
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| 201 | !----------------------------! |
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[8486] | 202 | IF( ln_limthd ) CALL ice_thd( kt ) ! -- Ice thermodynamics |
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[8321] | 203 | |
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| 204 | ! MV MP 2016 |
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[8486] | 205 | IF ( ln_pnd ) CALL lim_mp( kt ) ! -- Melt ponds |
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[8321] | 206 | ! END MV MP 2016 |
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| 207 | |
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[8486] | 208 | IF( ln_limthd ) CALL ice_cor( kt , 2 ) ! -- Corrections |
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[8321] | 209 | ! --- |
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| 210 | # if defined key_agrif |
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[8486] | 211 | IF( .NOT. Agrif_Root() ) CALL agrif_update_lim3( kt ) |
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[8321] | 212 | # endif |
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[8486] | 213 | CALL ice_var_glo2eqv ! necessary calls (at least for coupling) |
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| 214 | CALL ice_var_agg( 2 ) ! necessary calls (at least for coupling) |
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| 215 | ! |
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[8321] | 216 | !! clem: one should switch the calculation of the fluxes onto the parent grid but the following calls do not work |
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| 217 | !! moreover it should only be called at the update frequency (as in agrif_lim3_update.F90) |
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| 218 | !!# if defined key_agrif |
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| 219 | !! IF( .NOT. Agrif_Root() ) CALL Agrif_ChildGrid_To_ParentGrid() |
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| 220 | !!# endif |
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[8486] | 221 | CALL ice_update_flx( kt ) ! -- Update ocean surface mass, heat and salt fluxes |
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[8321] | 222 | !!# if defined key_agrif |
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| 223 | !! IF( .NOT. Agrif_Root() ) CALL Agrif_ParentGrid_To_ChildGrid() |
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| 224 | !!# endif |
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[8486] | 225 | IF( ln_limdiahsb ) CALL ice_dia( kt ) ! -- Diagnostics and outputs |
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[8321] | 226 | ! |
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[8413] | 227 | CALL ice_wri( 1 ) ! -- Ice outputs |
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[8321] | 228 | ! |
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[8486] | 229 | IF( kt == nit000 .AND. ln_rstart ) & !!gm I don't understand the ln_rstart, if needed, add a comment, please |
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[8321] | 230 | & CALL iom_close( numrir ) ! close input ice restart file |
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| 231 | ! |
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[8413] | 232 | IF( lrst_ice ) CALL ice_rst_write( kt ) ! -- Ice restart file |
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[8321] | 233 | ! |
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[8411] | 234 | IF( ln_limctl ) CALL ice_ctl( kt ) ! alerts in case of model crash |
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[8321] | 235 | ! |
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| 236 | ENDIF ! End sea-ice time step only |
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| 237 | |
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| 238 | !-------------------------! |
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| 239 | ! --- Ocean time step --- ! |
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| 240 | !-------------------------! |
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| 241 | ! Update surface ocean stresses (only in ice-dynamic case) otherwise the atm.-ocean stresses are used everywhere |
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| 242 | ! using before instantaneous surf. currents |
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[8414] | 243 | IF( ln_limdyn ) CALL ice_update_tau( kt, ub(:,:,1), vb(:,:,1) ) |
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[8321] | 244 | !!gm remark, the ocean-ice stress is not saved in ice diag call above ..... find a solution!!! |
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| 245 | ! |
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| 246 | IF( nn_timing == 1 ) CALL timing_stop('ice_stp') |
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| 247 | ! |
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| 248 | END SUBROUTINE ice_stp |
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| 249 | |
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| 250 | |
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| 251 | SUBROUTINE ice_init |
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| 252 | !!---------------------------------------------------------------------- |
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| 253 | !! *** ROUTINE ice_init *** |
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| 254 | !! |
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| 255 | !! ** purpose : Allocate all the dynamic arrays of the LIM-3 modules |
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| 256 | !!---------------------------------------------------------------------- |
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| 257 | INTEGER :: ji, jj, ierr |
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| 258 | !!---------------------------------------------------------------------- |
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| 259 | IF(lwp) WRITE(numout,*) |
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| 260 | IF(lwp) WRITE(numout,*) 'ice_init : update ocean surface boudary condition' |
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| 261 | IF(lwp) WRITE(numout,*) '~~~~~~~~ via Louvain la Neuve Ice Model (LIM-3) time stepping' |
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| 262 | ! |
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| 263 | ! ! Open the reference and configuration namelist files and namelist output file |
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| 264 | CALL ctl_opn( numnam_ice_ref, 'namelist_ice_ref', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp ) |
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| 265 | CALL ctl_opn( numnam_ice_cfg, 'namelist_ice_cfg', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp ) |
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| 266 | IF(lwm) CALL ctl_opn( numoni, 'output.namelist.ice', 'UNKNOWN', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp, 1 ) |
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| 267 | ! |
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| 268 | CALL ice_run_init ! set some ice run parameters |
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| 269 | ! |
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[8324] | 270 | ! ! Allocate the ice arrays (sbc_ice already allocated in sbc_init) |
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[8321] | 271 | ierr = ice_alloc () ! ice variables |
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[8331] | 272 | ierr = ierr + sbc_ice_alloc () ! surface forcing |
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[8420] | 273 | ierr = ierr + ice1D_alloc () ! thermodynamics |
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[8409] | 274 | IF( ln_limdyn ) ierr = ierr + ice_rdgrft_alloc () ! ridging/rafting |
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[8321] | 275 | ! |
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| 276 | IF( lk_mpp ) CALL mpp_sum( ierr ) |
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| 277 | IF( ierr /= 0 ) CALL ctl_stop('STOP', 'ice_init : unable to allocate ice arrays') |
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| 278 | ! |
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[8407] | 279 | CALL ice_rhg_init ! set ice dynamics parameters |
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[8321] | 280 | ! |
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| 281 | CALL ice_itd_init ! ice thickness distribution initialization |
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| 282 | ! |
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[8422] | 283 | CALL ice_thd_init ! set ice thermodynics parameters |
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[8321] | 284 | ! |
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[8422] | 285 | CALL ice_thd_sal_init ! set ice salinity parameters |
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[8321] | 286 | |
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| 287 | ! MV MP 2016 |
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| 288 | CALL lim_mp_init ! set melt ponds parameters |
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| 289 | ! END MV MP 2016 |
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| 290 | |
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[8409] | 291 | IF( ln_limdyn ) CALL ice_rdgrft_init ! ice thickness distribution initialization for ridging/rafting |
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[8321] | 292 | ! ! Initial sea-ice state |
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| 293 | IF( .NOT. ln_rstart ) THEN ! start from rest: sea-ice deduced from sst |
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[8426] | 294 | CALL ice_ist |
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[8321] | 295 | ELSE ! start from a restart file |
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[8413] | 296 | CALL ice_rst_read |
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[8321] | 297 | ENDIF |
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[8424] | 298 | CALL ice_var_agg(2) |
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| 299 | CALL ice_var_glo2eqv |
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[8321] | 300 | ! |
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[8414] | 301 | CALL ice_update_init ! ice surface boundary condition |
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[8321] | 302 | ! |
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[8426] | 303 | IF( ln_limdiahsb) CALL ice_dia_init ! initialization for diags |
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[8321] | 304 | ! |
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[8486] | 305 | fr_i (:,:) = at_i(:,:) ! initialisation of sea-ice fraction |
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[8321] | 306 | tn_ice(:,:,:) = t_su(:,:,:) ! initialisation of surface temp for coupled simu |
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| 307 | ! |
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| 308 | DO jj = 1, jpj |
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| 309 | DO ji = 1, jpi |
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[8486] | 310 | IF( gphit(ji,jj) > 0._wp ) THEN ; rn_amax_2d(ji,jj) = rn_amax_n ! NH |
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| 311 | ELSE ; rn_amax_2d(ji,jj) = rn_amax_s ! SH |
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[8321] | 312 | ENDIF |
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| 313 | END DO |
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| 314 | END DO |
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| 315 | ! |
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| 316 | END SUBROUTINE ice_init |
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| 317 | |
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| 318 | |
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| 319 | SUBROUTINE ice_run_init |
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| 320 | !!------------------------------------------------------------------- |
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| 321 | !! *** ROUTINE ice_run_init *** |
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| 322 | !! |
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| 323 | !! ** Purpose : Definition some run parameter for ice model |
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| 324 | !! |
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| 325 | !! ** Method : Read the namicerun namelist and check the parameter |
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| 326 | !! values called at the first timestep (nit000) |
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| 327 | !! |
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| 328 | !! ** input : Namelist namicerun |
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| 329 | !!------------------------------------------------------------------- |
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| 330 | INTEGER :: ios ! Local integer output status for namelist read |
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| 331 | NAMELIST/namicerun/ jpl, nlay_i, nlay_s, nn_monocat, rn_amax_n, rn_amax_s, cn_icerst_in, cn_icerst_indir, & |
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| 332 | & cn_icerst_out, cn_icerst_outdir, ln_limthd, ln_limdyn, nn_limdyn, rn_uice, rn_vice |
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| 333 | NAMELIST/namicediag/ ln_limdiachk, ln_limdiahsb, ln_limctl, iiceprt, jiceprt |
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| 334 | !!------------------------------------------------------------------- |
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| 335 | ! |
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[8486] | 336 | REWIND( numnam_ice_ref ) ! Namelist namicerun in reference namelist : Parameters for ice |
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[8321] | 337 | READ ( numnam_ice_ref, namicerun, IOSTAT = ios, ERR = 901) |
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| 338 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicerun in reference namelist', lwp ) |
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| 339 | |
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[8486] | 340 | REWIND( numnam_ice_cfg ) ! Namelist namicerun in configuration namelist : Parameters for ice |
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[8321] | 341 | READ ( numnam_ice_cfg, namicerun, IOSTAT = ios, ERR = 902 ) |
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| 342 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicerun in configuration namelist', lwp ) |
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| 343 | IF(lwm) WRITE ( numoni, namicerun ) |
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| 344 | ! |
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[8486] | 345 | REWIND( numnam_ice_ref ) ! Namelist namicediag in reference namelist : Parameters for ice |
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[8321] | 346 | READ ( numnam_ice_ref, namicediag, IOSTAT = ios, ERR = 903) |
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| 347 | 903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicediag in reference namelist', lwp ) |
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| 348 | |
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[8486] | 349 | REWIND( numnam_ice_cfg ) ! Namelist namicediag in configuration namelist : Parameters for ice |
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[8321] | 350 | READ ( numnam_ice_cfg, namicediag, IOSTAT = ios, ERR = 904 ) |
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| 351 | 904 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicediag in configuration namelist', lwp ) |
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| 352 | IF(lwm) WRITE ( numoni, namicediag ) |
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| 353 | ! |
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[8486] | 354 | IF(lwp) THEN ! control print |
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[8321] | 355 | WRITE(numout,*) |
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| 356 | WRITE(numout,*) 'ice_run_init : ice share parameters for dynamics/advection/thermo of sea-ice' |
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| 357 | WRITE(numout,*) ' ~~~~~~' |
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[8486] | 358 | WRITE(numout,*) ' Namelist namicerun : ' |
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| 359 | WRITE(numout,*) ' number of ice categories jpl = ', jpl |
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| 360 | WRITE(numout,*) ' number of ice layers nlay_i = ', nlay_i |
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| 361 | WRITE(numout,*) ' number of snow layers nlay_s = ', nlay_s |
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| 362 | WRITE(numout,*) ' virtual ITD mono-category param (1-4) or not (0) nn_monocat = ', nn_monocat |
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| 363 | WRITE(numout,*) ' maximum ice concentration for NH = ', rn_amax_n |
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| 364 | WRITE(numout,*) ' maximum ice concentration for SH = ', rn_amax_s |
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| 365 | WRITE(numout,*) ' Ice thermodynamics (T) or not (F) ln_limthd = ', ln_limthd |
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| 366 | WRITE(numout,*) ' Ice dynamics (T) or not (F) ln_limdyn = ', ln_limdyn |
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| 367 | WRITE(numout,*) ' associated switch nn_limdyn = ', nn_limdyn |
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| 368 | WRITE(numout,*) ' =2 all processes (default option)' |
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| 369 | WRITE(numout,*) ' =1 advection only (no ridging/rafting)' |
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| 370 | WRITE(numout,*) ' =0 advection only with prescribed velocity given by ' |
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| 371 | WRITE(numout,*) ' a uniform field (u,v)_ice = (rn_uice,rn_vice) = (', rn_uice,',', rn_vice,')' |
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[8321] | 372 | WRITE(numout,*) |
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[8486] | 373 | WRITE(numout,*) ' Namelist namicediag : ' |
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| 374 | WRITE(numout,*) ' Diagnose online heat/mass/salt budget ln_limdiachk = ', ln_limdiachk |
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| 375 | WRITE(numout,*) ' Output heat/mass/salt budget ln_limdiahsb = ', ln_limdiahsb |
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| 376 | WRITE(numout,*) ' control prints for a given grid point ln_limctl = ', ln_limctl |
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| 377 | WRITE(numout,*) ' chosen grid point position (iiceprt,jiceprt) = (', iiceprt,',', jiceprt,')' |
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[8321] | 378 | ENDIF |
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| 379 | ! |
---|
[8486] | 380 | ! !--- check consistency |
---|
| 381 | IF ( jpl > 1 .AND. nn_monocat == 1 ) THEN |
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[8321] | 382 | nn_monocat = 0 |
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| 383 | IF(lwp) WRITE(numout,*) |
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| 384 | IF(lwp) WRITE(numout,*) ' nn_monocat forced to 0 as jpl>1, i.e. multi-category case is chosen' |
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| 385 | ENDIF |
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[8486] | 386 | IF ( jpl == 1 .AND. nn_monocat == 0 ) THEN |
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[8321] | 387 | CALL ctl_stop( 'STOP', 'ice_run_init : if jpl=1 then nn_monocat should be between 1 and 4' ) |
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| 388 | ENDIF |
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| 389 | ! |
---|
[8486] | 390 | IF( ln_bdy .AND. ln_limdiachk ) CALL ctl_warn('ice_run_init: online conservation check does not work with BDY') |
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[8321] | 391 | ! |
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[8486] | 392 | ! ! set the choice of ice dynamics |
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| 393 | IF( lk_c1d .OR. .NOT.ln_limdyn ) THEN |
---|
| 394 | nice_dyn = np_dynNO !--- no dynamics |
---|
| 395 | ELSE |
---|
| 396 | SELECT CASE( nn_limdyn ) |
---|
| 397 | CASE( 2 ) |
---|
| 398 | IF( nn_monocat /= 2 ) THEN !--- full dynamics (rheology + advection + ridging/rafting + correction) |
---|
| 399 | nice_dyn = np_dynFULL |
---|
| 400 | ELSE |
---|
| 401 | nice_dyn = np_dyn !--- dynamics without ridging/rafting |
---|
| 402 | ENDIF |
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| 403 | CASE( 0 , 1 ) !--- dynamics without ridging/rafting and correction |
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| 404 | nice_dyn = np_dynPURE |
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| 405 | END SELECT |
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| 406 | ENDIF |
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| 407 | ! !--- simple conservative piling, comparable with LIM2 |
---|
| 408 | l_piling = nn_limdyn == 1 .OR. ( nn_monocat == 2 .AND. jpl == 1 ) |
---|
[8321] | 409 | ! |
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[8486] | 410 | rdt_ice = REAL(nn_fsbc) * rdt !--- sea-ice timestep and inverse |
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| 411 | r1_rdtice = 1._wp / rdt_ice |
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[8321] | 412 | IF( lwp ) WRITE(numout,*) ' ice timestep rdt_ice = ', rdt_ice |
---|
| 413 | ! |
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[8486] | 414 | r1_nlay_i = 1._wp / REAL( nlay_i, wp ) !--- inverse of nlay_i and nlay_s |
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| 415 | r1_nlay_s = 1._wp / REAL( nlay_s, wp ) |
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| 416 | ! |
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[8321] | 417 | END SUBROUTINE ice_run_init |
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| 418 | |
---|
| 419 | |
---|
| 420 | SUBROUTINE ice_itd_init |
---|
| 421 | !!------------------------------------------------------------------ |
---|
| 422 | !! *** ROUTINE ice_itd_init *** |
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| 423 | !! |
---|
| 424 | !! ** Purpose : Initializes the ice thickness distribution |
---|
| 425 | !! ** Method : ... |
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| 426 | !! ** input : Namelist namiceitd |
---|
| 427 | !!------------------------------------------------------------------- |
---|
[8486] | 428 | INTEGER :: jl ! dummy loop index |
---|
| 429 | INTEGER :: ios ! Local integer output status for namelist read |
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| 430 | REAL(wp) :: zc1, zc2, zc3, zx1 ! local scalars |
---|
| 431 | REAL(wp) :: zhmax, znum, zden, zalpha ! - - |
---|
| 432 | !! |
---|
[8321] | 433 | NAMELIST/namiceitd/ rn_himean |
---|
| 434 | !!------------------------------------------------------------------ |
---|
| 435 | ! |
---|
[8486] | 436 | REWIND( numnam_ice_ref ) ! Namelist namiceitd in reference namelist : Parameters for ice |
---|
[8321] | 437 | READ ( numnam_ice_ref, namiceitd, IOSTAT = ios, ERR = 905) |
---|
| 438 | 905 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceitd in reference namelist', lwp ) |
---|
| 439 | |
---|
[8486] | 440 | REWIND( numnam_ice_cfg ) ! Namelist namiceitd in configuration namelist : Parameters for ice |
---|
[8321] | 441 | READ ( numnam_ice_cfg, namiceitd, IOSTAT = ios, ERR = 906 ) |
---|
| 442 | 906 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceitd in configuration namelist', lwp ) |
---|
| 443 | IF(lwm) WRITE ( numoni, namiceitd ) |
---|
| 444 | ! |
---|
[8486] | 445 | IF(lwp) THEN ! control print |
---|
[8321] | 446 | WRITE(numout,*) |
---|
| 447 | WRITE(numout,*) 'ice_itd_init : Initialization of ice cat distribution ' |
---|
| 448 | WRITE(numout,*) '~~~~~~~~~~~~' |
---|
[8486] | 449 | WRITE(numout,*) ' Namelist namicerun : ' |
---|
| 450 | WRITE(numout,*) ' mean ice thickness in the domain rn_himean = ', rn_himean |
---|
[8321] | 451 | ENDIF |
---|
| 452 | ! |
---|
[8486] | 453 | !-----------------------------------! |
---|
| 454 | ! Thickness categories boundaries ! |
---|
| 455 | !-----------------------------------! |
---|
[8321] | 456 | ! |
---|
[8486] | 457 | zalpha = 0.05_wp ! max of each category (from h^(-alpha) function) |
---|
[8321] | 458 | zhmax = 3._wp * rn_himean |
---|
| 459 | DO jl = 1, jpl |
---|
| 460 | znum = jpl * ( zhmax+1 )**zalpha |
---|
| 461 | zden = REAL( jpl-jl , wp ) * ( zhmax + 1._wp )**zalpha + REAL( jl , wp ) |
---|
| 462 | hi_max(jl) = ( znum / zden )**(1./zalpha) - 1 |
---|
| 463 | END DO |
---|
| 464 | ! |
---|
| 465 | DO jl = 1, jpl ! mean thickness by category |
---|
| 466 | hi_mean(jl) = ( hi_max(jl) + hi_max(jl-1) ) * 0.5_wp |
---|
| 467 | END DO |
---|
| 468 | ! |
---|
| 469 | hi_max(jpl) = 99._wp ! set to a big value to ensure that all ice is thinner than hi_max(jpl) |
---|
| 470 | ! |
---|
| 471 | IF(lwp) WRITE(numout,*) |
---|
[8486] | 472 | IF(lwp) WRITE(numout,*) ' ===>>> resulting thickness category boundaries :' |
---|
| 473 | IF(lwp) WRITE(numout,*) ' hi_max(:)= ', hi_max(0:jpl) |
---|
[8321] | 474 | ! |
---|
| 475 | END SUBROUTINE ice_itd_init |
---|
| 476 | |
---|
[8486] | 477 | |
---|
[8321] | 478 | SUBROUTINE ice_bef |
---|
| 479 | !!---------------------------------------------------------------------- |
---|
| 480 | !! *** ROUTINE ice_bef *** |
---|
| 481 | !! |
---|
| 482 | !! ** purpose : store ice variables at "before" time step |
---|
| 483 | !!---------------------------------------------------------------------- |
---|
[8360] | 484 | INTEGER :: ji, jj, jl ! dummy loop index |
---|
| 485 | !!---------------------------------------------------------------------- |
---|
[8321] | 486 | ! |
---|
[8360] | 487 | DO jl = 1, jpl |
---|
[8404] | 488 | DO jj = 2, jpjm1 |
---|
| 489 | DO ji = 2, jpim1 |
---|
[8360] | 490 | a_i_b (ji,jj,jl) = a_i (ji,jj,jl) ! ice area |
---|
| 491 | v_i_b (ji,jj,jl) = v_i (ji,jj,jl) ! ice volume |
---|
| 492 | v_s_b (ji,jj,jl) = v_s (ji,jj,jl) ! snow volume |
---|
| 493 | smv_i_b(ji,jj,jl) = smv_i(ji,jj,jl) ! salt content |
---|
| 494 | oa_i_b (ji,jj,jl) = oa_i (ji,jj,jl) ! areal age content |
---|
| 495 | e_s_b (ji,jj,:,jl) = e_s (ji,jj,:,jl) ! snow thermal energy |
---|
| 496 | e_i_b (ji,jj,:,jl) = e_i (ji,jj,:,jl) ! ice thermal energy |
---|
| 497 | ! ! ice thickness |
---|
| 498 | rswitch = MAX( 0._wp , SIGN( 1._wp, a_i_b(ji,jj,jl) - epsi20 ) ) ! 0 if no ice and 1 if yes |
---|
| 499 | ht_i_b(ji,jj,jl) = v_i_b (ji,jj,jl) / MAX( a_i_b(ji,jj,jl) , epsi20 ) * rswitch |
---|
| 500 | ht_s_b(ji,jj,jl) = v_s_b (ji,jj,jl) / MAX( a_i_b(ji,jj,jl) , epsi20 ) * rswitch |
---|
| 501 | END DO |
---|
[8404] | 502 | END DO |
---|
[8360] | 503 | END DO |
---|
[8486] | 504 | CALL lbc_lnk_multi( a_i_b, 'T', 1., v_i_b , 'T', 1., ht_i_b, 'T', 1., smv_i_b, 'T', 1., & |
---|
| 505 | & oa_i_b, 'T', 1., v_s_b , 'T', 1., ht_s_b, 'T', 1. ) |
---|
[8404] | 506 | CALL lbc_lnk( e_i_b, 'T', 1. ) |
---|
| 507 | CALL lbc_lnk( e_s_b, 'T', 1. ) |
---|
[8321] | 508 | |
---|
[8486] | 509 | !!gm Question: here , a_i_b, u_ice and v_ice are defined over the whole domain, |
---|
| 510 | !!gm so why not just a copy over the whole domain and no lbc_lnk ? |
---|
| 511 | !!gm that is some thing like: |
---|
| 512 | ! at_i_b(:,:) = SUM( a_i_b(:,:,:), dim=3 ) |
---|
| 513 | ! u_ice_b(:,:) = u_ice(:,:) |
---|
| 514 | ! v_ice_b(:,:) = v_ice(:,:) |
---|
| 515 | ! idem for the loop above |
---|
| 516 | !!gm |
---|
[8360] | 517 | ! ice velocities & total concentration |
---|
[8404] | 518 | DO jj = 2, jpjm1 |
---|
| 519 | DO ji = 2, jpim1 |
---|
[8360] | 520 | at_i_b(ji,jj) = SUM( a_i_b(ji,jj,:) ) |
---|
| 521 | u_ice_b(ji,jj) = u_ice(ji,jj) |
---|
| 522 | v_ice_b(ji,jj) = v_ice(ji,jj) |
---|
| 523 | END DO |
---|
| 524 | END DO |
---|
[8404] | 525 | CALL lbc_lnk_multi( at_i_b, 'T', 1., u_ice_b , 'U', -1., v_ice_b , 'V', -1. ) |
---|
[8486] | 526 | ! |
---|
[8321] | 527 | END SUBROUTINE ice_bef |
---|
| 528 | |
---|
| 529 | |
---|
| 530 | SUBROUTINE ice_diag0 |
---|
| 531 | !!---------------------------------------------------------------------- |
---|
| 532 | !! *** ROUTINE ice_diag0 *** |
---|
| 533 | !! |
---|
| 534 | !! ** purpose : set ice-ocean and ice-atm. fluxes to zeros at the beggining |
---|
| 535 | !! of the time step |
---|
| 536 | !!---------------------------------------------------------------------- |
---|
[8360] | 537 | INTEGER :: ji, jj ! dummy loop index |
---|
| 538 | !!---------------------------------------------------------------------- |
---|
| 539 | DO jj = 1, jpj |
---|
| 540 | DO ji = 1, jpi |
---|
| 541 | sfx (ji,jj) = 0._wp ; |
---|
| 542 | sfx_bri(ji,jj) = 0._wp ; sfx_lam(ji,jj) = 0._wp |
---|
| 543 | sfx_sni(ji,jj) = 0._wp ; sfx_opw(ji,jj) = 0._wp |
---|
| 544 | sfx_bog(ji,jj) = 0._wp ; sfx_dyn(ji,jj) = 0._wp |
---|
| 545 | sfx_bom(ji,jj) = 0._wp ; sfx_sum(ji,jj) = 0._wp |
---|
| 546 | sfx_res(ji,jj) = 0._wp ; sfx_sub(ji,jj) = 0._wp |
---|
| 547 | ! |
---|
| 548 | wfx_snw(ji,jj) = 0._wp ; wfx_ice(ji,jj) = 0._wp |
---|
| 549 | wfx_sni(ji,jj) = 0._wp ; wfx_opw(ji,jj) = 0._wp |
---|
| 550 | wfx_bog(ji,jj) = 0._wp ; wfx_dyn(ji,jj) = 0._wp |
---|
| 551 | wfx_bom(ji,jj) = 0._wp ; wfx_sum(ji,jj) = 0._wp |
---|
| 552 | wfx_res(ji,jj) = 0._wp ; wfx_sub(ji,jj) = 0._wp |
---|
| 553 | wfx_spr(ji,jj) = 0._wp ; wfx_lam(ji,jj) = 0._wp |
---|
| 554 | wfx_snw_dyn(ji,jj) = 0._wp ; wfx_snw_sum(ji,jj) = 0._wp |
---|
| 555 | wfx_snw_sub(ji,jj) = 0._wp ; wfx_ice_sub(ji,jj) = 0._wp |
---|
| 556 | wfx_snw_sni(ji,jj) = 0._wp |
---|
| 557 | ! MV MP 2016 |
---|
| 558 | wfx_pnd(ji,jj) = 0._wp |
---|
| 559 | ! END MV MP 2016 |
---|
| 560 | |
---|
| 561 | hfx_thd(ji,jj) = 0._wp ; |
---|
| 562 | hfx_snw(ji,jj) = 0._wp ; hfx_opw(ji,jj) = 0._wp |
---|
| 563 | hfx_bog(ji,jj) = 0._wp ; hfx_dyn(ji,jj) = 0._wp |
---|
| 564 | hfx_bom(ji,jj) = 0._wp ; hfx_sum(ji,jj) = 0._wp |
---|
| 565 | hfx_res(ji,jj) = 0._wp ; hfx_sub(ji,jj) = 0._wp |
---|
| 566 | hfx_spr(ji,jj) = 0._wp ; hfx_dif(ji,jj) = 0._wp |
---|
| 567 | hfx_err(ji,jj) = 0._wp ; hfx_err_rem(ji,jj) = 0._wp |
---|
| 568 | hfx_err_dif(ji,jj) = 0._wp |
---|
| 569 | wfx_err_sub(ji,jj) = 0._wp |
---|
| 570 | ! |
---|
| 571 | afx_tot(ji,jj) = 0._wp ; |
---|
| 572 | afx_dyn(ji,jj) = 0._wp ; afx_thd(ji,jj) = 0._wp |
---|
| 573 | ! |
---|
| 574 | diag_heat(ji,jj) = 0._wp ; diag_smvi(ji,jj) = 0._wp |
---|
| 575 | diag_vice(ji,jj) = 0._wp ; diag_vsnw(ji,jj) = 0._wp |
---|
| 576 | |
---|
| 577 | ! SIMIP diagnostics |
---|
| 578 | diag_dms_dyn(ji,jj) = 0._wp ; diag_dmi_dyn(ji,jj) = 0._wp |
---|
| 579 | diag_fc_bo(ji,jj) = 0._wp ; diag_fc_su(ji,jj) = 0._wp |
---|
| 580 | |
---|
| 581 | tau_icebfr(ji,jj) = 0._wp; ! landfast ice param only (clem: important to keep the init here) |
---|
| 582 | END DO |
---|
| 583 | END DO |
---|
[8321] | 584 | |
---|
| 585 | END SUBROUTINE ice_diag0 |
---|
| 586 | |
---|
| 587 | #else |
---|
| 588 | !!---------------------------------------------------------------------- |
---|
| 589 | !! Default option Dummy module NO LIM 3.0 sea-ice model |
---|
| 590 | !!---------------------------------------------------------------------- |
---|
| 591 | CONTAINS |
---|
| 592 | SUBROUTINE ice_stp ( kt, ksbc ) ! Dummy routine |
---|
| 593 | INTEGER, INTENT(in) :: kt, ksbc |
---|
| 594 | WRITE(*,*) 'ice_stp: You should not have seen this print! error?', kt |
---|
| 595 | END SUBROUTINE ice_stp |
---|
| 596 | SUBROUTINE ice_init ! Dummy routine |
---|
| 597 | END SUBROUTINE ice_init |
---|
| 598 | #endif |
---|
| 599 | |
---|
| 600 | !!====================================================================== |
---|
| 601 | END MODULE icestp |
---|