[888] | 1 | MODULE sbcice_lim |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE sbcice_lim *** |
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[921] | 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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[2715] | 6 | !! Sea-Ice model : LIM-3 Sea ice model time-stepping |
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[2528] | 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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| 10 | !! - ! 2008-04 (G. Madec) sltyle and lim_ctl routine |
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| 11 | !! 3.3 ! 2010-11 (G. Madec) ice-ocean stress always computed at each ocean time-step |
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[3625] | 12 | !! 3.4 ! 2011-01 (A Porter) dynamical allocation |
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[4161] | 13 | !! - ! 2012-10 (C. Rousset) add lim_diahsb |
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[4990] | 14 | !! 3.6 ! 2014-07 (M. Vancoppenolle, G. Madec, O. Marti) revise coupled interface |
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[888] | 15 | !!---------------------------------------------------------------------- |
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| 16 | #if defined key_lim3 |
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| 17 | !!---------------------------------------------------------------------- |
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| 18 | !! 'key_lim3' : LIM 3.0 sea-ice model |
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| 19 | !!---------------------------------------------------------------------- |
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[921] | 20 | !! sbc_ice_lim : sea-ice model time-stepping and update ocean sbc over ice-covered area |
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[888] | 21 | !!---------------------------------------------------------------------- |
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| 22 | USE oce ! ocean dynamics and tracers |
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| 23 | USE dom_oce ! ocean space and time domain |
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[2528] | 24 | USE ice ! LIM-3: ice variables |
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[5051] | 25 | USE thd_ice ! LIM-3: thermodynamical variables |
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[2528] | 26 | USE dom_ice ! LIM-3: ice domain |
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[888] | 27 | |
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| 28 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 29 | USE sbc_ice ! Surface boundary condition: ice fields |
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| 30 | USE sbcblk_core ! Surface boundary condition: CORE bulk |
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| 31 | USE sbcblk_clio ! Surface boundary condition: CLIO bulk |
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[4161] | 32 | USE sbccpl ! Surface boundary condition: coupled interface |
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[2528] | 33 | USE albedo ! ocean & ice albedo |
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[888] | 34 | |
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| 35 | USE phycst ! Define parameters for the routines |
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| 36 | USE eosbn2 ! equation of state |
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| 37 | USE limdyn ! Ice dynamics |
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| 38 | USE limtrp ! Ice transport |
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| 39 | USE limthd ! Ice thermodynamics |
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| 40 | USE limitd_me ! Mechanics on ice thickness distribution |
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| 41 | USE limsbc ! sea surface boundary condition |
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[4161] | 42 | USE limdiahsb ! Ice budget diagnostics |
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[888] | 43 | USE limwri ! Ice outputs |
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| 44 | USE limrst ! Ice restarts |
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[5051] | 45 | USE limupdate1 ! update of global variables |
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| 46 | USE limupdate2 ! update of global variables |
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[888] | 47 | USE limvar ! Ice variables switch |
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| 48 | |
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[5051] | 49 | USE limmsh ! LIM mesh |
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| 50 | USE limistate ! LIM initial state |
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| 51 | USE limthd_sal ! LIM ice thermodynamics: salinity |
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| 52 | |
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[2528] | 53 | USE c1d ! 1D vertical configuration |
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| 54 | USE lbclnk ! lateral boundary condition - MPP link |
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[2715] | 55 | USE lib_mpp ! MPP library |
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[3294] | 56 | USE wrk_nemo ! work arrays |
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[4161] | 57 | USE timing ! Timing |
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[888] | 58 | USE iom ! I/O manager library |
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| 59 | USE in_out_manager ! I/O manager |
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| 60 | USE prtctl ! Print control |
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[4333] | 61 | USE lib_fortran ! |
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[5051] | 62 | USE limctl |
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[888] | 63 | |
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[4161] | 64 | #if defined key_bdy |
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| 65 | USE bdyice_lim ! unstructured open boundary data (bdy_ice_lim routine) |
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| 66 | #endif |
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| 67 | |
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[888] | 68 | IMPLICIT NONE |
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| 69 | PRIVATE |
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| 70 | |
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| 71 | PUBLIC sbc_ice_lim ! routine called by sbcmod.F90 |
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[5051] | 72 | PUBLIC sbc_lim_init ! routine called by sbcmod.F90 |
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[888] | 73 | |
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| 74 | !! * Substitutions |
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| 75 | # include "domzgr_substitute.h90" |
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| 76 | # include "vectopt_loop_substitute.h90" |
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| 77 | !!---------------------------------------------------------------------- |
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[2715] | 78 | !! NEMO/OPA 4.0 , UCL NEMO Consortium (2011) |
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[1146] | 79 | !! $Id$ |
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[2528] | 80 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[888] | 81 | !!---------------------------------------------------------------------- |
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| 82 | CONTAINS |
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| 83 | |
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[4161] | 84 | !!====================================================================== |
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| 85 | |
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[2528] | 86 | SUBROUTINE sbc_ice_lim( kt, kblk ) |
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[888] | 87 | !!--------------------------------------------------------------------- |
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| 88 | !! *** ROUTINE sbc_ice_lim *** |
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| 89 | !! |
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| 90 | !! ** Purpose : update the ocean surface boundary condition via the |
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| 91 | !! Louvain la Neuve Sea Ice Model time stepping |
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| 92 | !! |
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| 93 | !! ** Method : ice model time stepping |
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| 94 | !! - call the ice dynamics routine |
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| 95 | !! - call the ice advection/diffusion routine |
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| 96 | !! - call the ice thermodynamics routine |
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| 97 | !! - call the routine that computes mass and |
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| 98 | !! heat fluxes at the ice/ocean interface |
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| 99 | !! - save the outputs |
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| 100 | !! - save the outputs for restart when necessary |
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| 101 | !! |
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| 102 | !! ** Action : - time evolution of the LIM sea-ice model |
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| 103 | !! - update all sbc variables below sea-ice: |
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[3625] | 104 | !! utau, vtau, taum, wndm, qns , qsr, emp , sfx |
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[888] | 105 | !!--------------------------------------------------------------------- |
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| 106 | INTEGER, INTENT(in) :: kt ! ocean time step |
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[4990] | 107 | INTEGER, INTENT(in) :: kblk ! type of bulk (=3 CLIO, =4 CORE, =5 COUPLED) |
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[888] | 108 | !! |
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[5053] | 109 | INTEGER :: jl ! dummy loop index |
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[4990] | 110 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zalb_os, zalb_cs ! ice albedo under overcast/clear sky |
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| 111 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zalb_ice ! mean ice albedo (for coupled) |
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[888] | 112 | !!---------------------------------------------------------------------- |
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| 113 | |
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[4161] | 114 | IF( nn_timing == 1 ) CALL timing_start('sbc_ice_lim') |
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| 115 | |
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[5053] | 116 | IF( MOD( kt-1, nn_fsbc ) == 0 ) THEN ! Ice time-step only |
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| 117 | !-----------------------! |
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| 118 | ! --- Bulk Formulae --- ! |
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| 119 | !-----------------------! |
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[5051] | 120 | u_oce(:,:) = ssu_m(:,:) * umask(:,:,1) ! mean surface ocean current at ice velocity point |
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| 121 | v_oce(:,:) = ssv_m(:,:) * vmask(:,:,1) ! (C-grid dynamics : U- & V-points as the ocean) |
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| 122 | |
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| 123 | ! masked sea surface freezing temperature [Kelvin] (set to rt0 over land) |
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| 124 | t_bo(:,:) = ( eos_fzp( sss_m ) + rt0 ) * tmask(:,:,1) + rt0 * ( 1._wp - tmask(:,:,1) ) |
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| 125 | ! |
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| 126 | ! Ice albedo |
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| 127 | CALL wrk_alloc( jpi,jpj,jpl, zalb_os, zalb_cs, zalb_ice ) |
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[4990] | 128 | CALL albedo_ice( t_su, ht_i, ht_s, zalb_cs, zalb_os ) ! cloud-sky and overcast-sky ice albedos |
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[4689] | 129 | |
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[5053] | 130 | ! CORE and COUPLED bulk formulations |
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[4990] | 131 | SELECT CASE( kblk ) |
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[5053] | 132 | CASE( jp_core , jp_cpl ) |
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[888] | 133 | |
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[4990] | 134 | ! albedo depends on cloud fraction because of non-linear spectral effects |
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| 135 | zalb_ice(:,:,:) = ( 1. - cldf_ice ) * zalb_cs(:,:,:) + cldf_ice * zalb_os(:,:,:) |
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| 136 | ! In CLIO the cloud fraction is read in the climatology and the all-sky albedo |
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| 137 | ! (zalb_ice) is computed within the bulk routine |
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| 138 | |
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| 139 | END SELECT |
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| 140 | |
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[5051] | 141 | ! Mask sea ice surface temperature (set to rt0 over land) |
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[1109] | 142 | DO jl = 1, jpl |
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[5051] | 143 | t_su(:,:,jl) = t_su(:,:,jl) * tmask(:,:,1) + rt0 * ( 1._wp - tmask(:,:,1) ) |
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[1109] | 144 | END DO |
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[4990] | 145 | |
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| 146 | ! Bulk formulae - provides the following fields: |
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[1469] | 147 | ! utau_ice, vtau_ice : surface ice stress (U- & V-points) [N/m2] |
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| 148 | ! qsr_ice , qns_ice : solar & non solar heat flux over ice (T-point) [W/m2] |
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| 149 | ! qla_ice : latent heat flux over ice (T-point) [W/m2] |
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| 150 | ! dqns_ice, dqla_ice : non solar & latent heat sensistivity (T-point) [W/m2] |
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| 151 | ! tprecip , sprecip : total & solid precipitation (T-point) [Kg/m2/s] |
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| 152 | ! fr1_i0 , fr2_i0 : 1sr & 2nd fraction of qsr penetration in ice [%] |
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[888] | 153 | ! |
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| 154 | SELECT CASE( kblk ) |
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[4990] | 155 | CASE( jp_clio ) ! CLIO bulk formulation |
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| 156 | CALL blk_ice_clio( t_su , zalb_cs , zalb_os , zalb_ice , & |
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[2715] | 157 | & utau_ice , vtau_ice , qns_ice , qsr_ice , & |
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| 158 | & qla_ice , dqns_ice , dqla_ice , & |
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| 159 | & tprecip , sprecip , & |
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| 160 | & fr1_i0 , fr2_i0 , cp_ice_msh, jpl ) |
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[921] | 161 | ! |
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[4990] | 162 | IF( nn_limflx /= 2 ) CALL ice_lim_flx( t_su, zalb_ice, qns_ice, qsr_ice , & |
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| 163 | & dqns_ice, qla_ice, dqla_ice, nn_limflx ) |
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| 164 | |
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| 165 | CASE( jp_core ) ! CORE bulk formulation |
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[4689] | 166 | CALL blk_ice_core( t_su , u_ice , v_ice , zalb_ice , & |
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[2715] | 167 | & utau_ice , vtau_ice , qns_ice , qsr_ice , & |
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| 168 | & qla_ice , dqns_ice , dqla_ice , & |
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| 169 | & tprecip , sprecip , & |
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[2528] | 170 | & fr1_i0 , fr2_i0 , cp_ice_msh, jpl ) |
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[4990] | 171 | ! |
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| 172 | IF( nn_limflx /= 2 ) CALL ice_lim_flx( t_su, zalb_ice, qns_ice, qsr_ice , & |
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| 173 | & dqns_ice, qla_ice, dqla_ice, nn_limflx ) |
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[4161] | 174 | ! |
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[4990] | 175 | CASE ( jp_cpl ) |
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[4161] | 176 | |
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| 177 | CALL sbc_cpl_ice_tau( utau_ice , vtau_ice ) |
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| 178 | |
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[888] | 179 | END SELECT |
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[4990] | 180 | |
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[5053] | 181 | !------------------------------! |
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| 182 | ! --- LIM-3 main time-step --- ! |
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| 183 | !------------------------------! |
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[921] | 184 | numit = numit + nn_fsbc ! Ice model time step |
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| 185 | ! |
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| 186 | ! ! Store previous ice values |
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[4871] | 187 | a_i_b (:,:,:) = a_i (:,:,:) ! ice area |
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| 188 | e_i_b (:,:,:,:) = e_i (:,:,:,:) ! ice thermal energy |
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| 189 | v_i_b (:,:,:) = v_i (:,:,:) ! ice volume |
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| 190 | v_s_b (:,:,:) = v_s (:,:,:) ! snow volume |
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| 191 | e_s_b (:,:,:,:) = e_s (:,:,:,:) ! snow thermal energy |
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| 192 | smv_i_b(:,:,:) = smv_i(:,:,:) ! salt content |
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| 193 | oa_i_b (:,:,:) = oa_i (:,:,:) ! areal age content |
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| 194 | u_ice_b(:,:) = u_ice(:,:) |
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| 195 | v_ice_b(:,:) = v_ice(:,:) |
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[4689] | 196 | |
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[5053] | 197 | CALL sbc_lim_diag0 ! set diag of mass, heat and salt fluxes to 0 |
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[4689] | 198 | |
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[921] | 199 | CALL lim_rst_opn( kt ) ! Open Ice restart file |
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| 200 | ! |
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[4333] | 201 | ! ---------------------------------------------- |
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| 202 | ! ice dynamics and transport (except in 1D case) |
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| 203 | ! ---------------------------------------------- |
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| 204 | IF( .NOT. lk_c1d ) THEN |
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[5048] | 205 | |
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[921] | 206 | CALL lim_dyn( kt ) ! Ice dynamics ( rheology/dynamics ) |
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[5053] | 207 | |
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[921] | 208 | CALL lim_trp( kt ) ! Ice transport ( Advection/diffusion ) |
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[5053] | 209 | |
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[5051] | 210 | IF( nn_monocat /= 2 ) & |
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| 211 | & CALL lim_itd_me ! Mechanical redistribution ! (ridging/rafting) |
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[5053] | 212 | |
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[4333] | 213 | #if defined key_bdy |
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| 214 | ! bdy ice thermo |
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| 215 | CALL lim_var_glo2eqv ! equivalent variables |
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| 216 | CALL bdy_ice_lim( kt ) |
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[5051] | 217 | CALL lim_var_zapsmall |
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[4333] | 218 | CALL lim_var_agg(1) |
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[5051] | 219 | IF( ln_nicep ) CALL lim_prt( kt, jiindx, jjindx, 1, ' - ice thermo bdy - ' ) ! control print |
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[4333] | 220 | #endif |
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[5053] | 221 | |
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| 222 | CALL lim_update1( kt ) |
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| 223 | |
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[900] | 224 | ENDIF |
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[5053] | 225 | |
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| 226 | !- Change old values for new values |
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| 227 | u_ice_b(:,:) = u_ice(:,:) |
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| 228 | v_ice_b(:,:) = v_ice(:,:) |
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| 229 | a_i_b (:,:,:) = a_i (:,:,:) |
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| 230 | v_s_b (:,:,:) = v_s (:,:,:) |
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| 231 | v_i_b (:,:,:) = v_i (:,:,:) |
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| 232 | e_s_b (:,:,:,:) = e_s (:,:,:,:) |
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| 233 | e_i_b (:,:,:,:) = e_i (:,:,:,:) |
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| 234 | oa_i_b (:,:,:) = oa_i (:,:,:) |
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| 235 | smv_i_b(:,:,:) = smv_i(:,:,:) |
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[4333] | 236 | |
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| 237 | ! ---------------------------------------------- |
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[5048] | 238 | ! ice thermodynamics |
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[4333] | 239 | ! ---------------------------------------------- |
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[921] | 240 | CALL lim_var_glo2eqv ! equivalent variables |
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| 241 | CALL lim_var_agg(1) ! aggregate ice categories |
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[5051] | 242 | |
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[4333] | 243 | ! previous lead fraction and ice volume for flux calculations |
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| 244 | pfrld(:,:) = 1._wp - at_i(:,:) |
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| 245 | phicif(:,:) = vt_i(:,:) |
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[4990] | 246 | |
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| 247 | SELECT CASE( kblk ) |
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| 248 | CASE ( jp_cpl ) |
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| 249 | CALL sbc_cpl_ice_flx( p_frld=pfrld, palbi=zalb_ice, psst=sst_m, pist=t_su ) |
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| 250 | IF( nn_limflx == 2 ) CALL ice_lim_flx( t_su, zalb_ice, qns_ice, qsr_ice , & |
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| 251 | & dqns_ice, qla_ice, dqla_ice, nn_limflx ) |
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[5053] | 252 | ! Latent heat flux is forced to 0 in coupled: it is included in qns (non-solar heat flux) |
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[4990] | 253 | qla_ice (:,:,:) = 0._wp |
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| 254 | dqla_ice (:,:,:) = 0._wp |
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| 255 | END SELECT |
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[4333] | 256 | ! |
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[921] | 257 | CALL lim_thd( kt ) ! Ice thermodynamics |
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[4333] | 258 | |
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[5053] | 259 | CALL lim_update2( kt ) ! Global variables update |
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[921] | 260 | ! |
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[5053] | 261 | CALL lim_sbc_flx( kt ) ! Update surface ocean mass, heat and salt fluxes |
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[888] | 262 | ! |
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[5051] | 263 | IF(ln_limdiaout) CALL lim_diahsb ! Diagnostics and outputs |
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[4689] | 264 | |
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[5053] | 265 | CALL lim_wri( 1 ) ! Ice outputs |
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[4689] | 266 | |
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[4205] | 267 | IF( kt == nit000 .AND. ln_rstart ) & |
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[5053] | 268 | & CALL iom_close( numrir ) ! close input ice restart file |
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[4205] | 269 | ! |
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[921] | 270 | IF( lrst_ice ) CALL lim_rst_write( kt ) ! Ice restart file |
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| 271 | CALL lim_var_glo2eqv ! ??? |
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| 272 | ! |
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[4333] | 273 | IF( ln_nicep ) CALL lim_ctl( kt ) ! alerts in case of model crash |
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[921] | 274 | ! |
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[4990] | 275 | CALL wrk_dealloc( jpi,jpj,jpl, zalb_os, zalb_cs, zalb_ice ) |
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| 276 | ! |
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[2528] | 277 | ENDIF ! End sea-ice time step only |
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[888] | 278 | |
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[2528] | 279 | ! !--------------------------! |
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| 280 | ! ! at all ocean time step ! |
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| 281 | ! !--------------------------! |
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| 282 | ! |
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| 283 | ! ! Update surface ocean stresses (only in ice-dynamic case) |
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| 284 | ! ! otherwise the atm.-ocean stresses are used everywhere |
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| 285 | IF( ln_limdyn ) CALL lim_sbc_tau( kt, ub(:,:,1), vb(:,:,1) ) ! using before instantaneous surf. currents |
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| 286 | !!gm remark, the ocean-ice stress is not saved in ice diag call above ..... find a solution!!! |
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[2715] | 287 | ! |
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[4161] | 288 | IF( nn_timing == 1 ) CALL timing_stop('sbc_ice_lim') |
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| 289 | ! |
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[921] | 290 | END SUBROUTINE sbc_ice_lim |
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[4990] | 291 | |
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[5051] | 292 | |
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| 293 | SUBROUTINE sbc_lim_init |
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| 294 | !!---------------------------------------------------------------------- |
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| 295 | !! *** ROUTINE sbc_lim_init *** |
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| 296 | !! |
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| 297 | !! ** purpose : Allocate all the dynamic arrays of the LIM-3 modules |
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| 298 | !!---------------------------------------------------------------------- |
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| 299 | INTEGER :: ierr |
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| 300 | !!---------------------------------------------------------------------- |
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| 301 | IF(lwp) WRITE(numout,*) |
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| 302 | IF(lwp) WRITE(numout,*) 'sbc_ice_lim : update ocean surface boudary condition' |
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| 303 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ via Louvain la Neuve Ice Model (LIM-3) time stepping' |
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| 304 | ! |
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[5055] | 305 | ! Open the reference and configuration namelist files and namelist output file |
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| 306 | CALL ctl_opn( numnam_ice_ref, 'namelist_ice_ref', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp ) |
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| 307 | CALL ctl_opn( numnam_ice_cfg, 'namelist_ice_cfg', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp ) |
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| 308 | IF(lwm) CALL ctl_opn( numoni, 'output.namelist.ice', 'UNKNOWN', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp, 1 ) |
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| 309 | |
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| 310 | CALL ice_run ! set some ice run parameters including jpl, nlay_i and nlay_s |
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[5051] | 311 | ! ! Allocate the ice arrays |
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| 312 | ierr = ice_alloc () ! ice variables |
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| 313 | ierr = ierr + dom_ice_alloc () ! domain |
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| 314 | ierr = ierr + sbc_ice_alloc () ! surface forcing |
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| 315 | ierr = ierr + thd_ice_alloc () ! thermodynamics |
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| 316 | ierr = ierr + lim_itd_me_alloc () ! ice thickness distribution - mechanics |
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| 317 | ! |
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| 318 | IF( lk_mpp ) CALL mpp_sum( ierr ) |
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| 319 | IF( ierr /= 0 ) CALL ctl_stop('STOP', 'sbc_lim_init : unable to allocate ice arrays') |
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| 320 | ! |
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| 321 | ! ! adequation jpk versus ice/snow layers/categories |
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| 322 | IF( jpl > jpk .OR. (nlay_i+1) > jpk .OR. nlay_s > jpk ) & |
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[5055] | 323 | & CALL ctl_stop( 'STOP', & |
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[5051] | 324 | & 'sbc_lim_init: the 3rd dimension of workspace arrays is too small.', & |
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| 325 | & 'use more ocean levels or less ice/snow layers/categories.' ) |
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| 326 | ! |
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| 327 | ! |
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| 328 | CALL lim_thd_init ! set ice thermodynics parameters |
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| 329 | ! |
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| 330 | CALL lim_thd_sal_init ! set ice salinity parameters |
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| 331 | ! |
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| 332 | CALL lim_msh ! ice mesh initialization |
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| 333 | ! |
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[5053] | 334 | CALL lim_itd_init ! ice thickness distribution initialization |
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[5051] | 335 | ! |
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[5055] | 336 | CALL lim_itd_me_init ! ice thickness distribution initialization for mecanical deformation |
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[5051] | 337 | ! ! Initial sea-ice state |
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| 338 | IF( .NOT. ln_rstart ) THEN ! start from rest: sea-ice deduced from sst |
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| 339 | numit = 0 |
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| 340 | numit = nit000 - 1 |
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| 341 | CALL lim_istate |
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| 342 | ELSE ! start from a restart file |
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| 343 | CALL lim_rst_read |
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| 344 | numit = nit000 - 1 |
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| 345 | ENDIF |
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[5053] | 346 | CALL lim_var_agg(1) |
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| 347 | CALL lim_var_glo2eqv |
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[5051] | 348 | ! |
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| 349 | CALL lim_sbc_init ! ice surface boundary condition |
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| 350 | ! |
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| 351 | fr_i(:,:) = at_i(:,:) ! initialisation of sea-ice fraction |
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| 352 | tn_ice(:,:,:) = t_su(:,:,:) ! initialisation of surface temp for coupled simu |
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| 353 | ! |
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| 354 | nstart = numit + nn_fsbc |
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| 355 | nitrun = nitend - nit000 + 1 |
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| 356 | nlast = numit + nitrun |
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| 357 | ! |
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| 358 | IF( nstock == 0 ) nstock = nlast + 1 |
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| 359 | ! |
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| 360 | END SUBROUTINE sbc_lim_init |
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| 361 | |
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| 362 | |
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| 363 | SUBROUTINE ice_run |
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| 364 | !!------------------------------------------------------------------- |
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| 365 | !! *** ROUTINE ice_run *** |
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| 366 | !! |
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| 367 | !! ** Purpose : Definition some run parameter for ice model |
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| 368 | !! |
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| 369 | !! ** Method : Read the namicerun namelist and check the parameter |
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| 370 | !! values called at the first timestep (nit000) |
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| 371 | !! |
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| 372 | !! ** input : Namelist namicerun |
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| 373 | !!------------------------------------------------------------------- |
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[5055] | 374 | INTEGER :: ios ! Local integer output status for namelist read |
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| 375 | NAMELIST/namicerun/ jpl, nlay_i, nlay_s, cn_icerst_in, cn_icerst_out, & |
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[5053] | 376 | & ln_limdyn, amax, ln_nicep, ln_limdiahsb, ln_limdiaout |
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[5051] | 377 | !!------------------------------------------------------------------- |
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| 378 | ! |
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| 379 | REWIND( numnam_ice_ref ) ! Namelist namicerun in reference namelist : Parameters for ice |
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| 380 | READ ( numnam_ice_ref, namicerun, IOSTAT = ios, ERR = 901) |
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| 381 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicerun in reference namelist', lwp ) |
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| 382 | |
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| 383 | REWIND( numnam_ice_cfg ) ! Namelist namicerun in configuration namelist : Parameters for ice |
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| 384 | READ ( numnam_ice_cfg, namicerun, IOSTAT = ios, ERR = 902 ) |
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| 385 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicerun in configuration namelist', lwp ) |
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| 386 | IF(lwm) WRITE ( numoni, namicerun ) |
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| 387 | ! |
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| 388 | ! |
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| 389 | IF(lwp) THEN ! control print |
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| 390 | WRITE(numout,*) |
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| 391 | WRITE(numout,*) 'ice_run : ice share parameters for dynamics/advection/thermo of sea-ice' |
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| 392 | WRITE(numout,*) ' ~~~~~~' |
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[5055] | 393 | WRITE(numout,*) ' number of ice categories = ', jpl |
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| 394 | WRITE(numout,*) ' number of ice layers = ', nlay_i |
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| 395 | WRITE(numout,*) ' number of snow layers = ', nlay_s |
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[5051] | 396 | WRITE(numout,*) ' switch for ice dynamics (1) or not (0) ln_limdyn = ', ln_limdyn |
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| 397 | WRITE(numout,*) ' maximum ice concentration = ', amax |
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| 398 | WRITE(numout,*) ' Several ice points in the ice or not in ocean.output = ', ln_nicep |
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| 399 | WRITE(numout,*) ' Diagnose heat/salt budget or not ln_limdiahsb = ', ln_limdiahsb |
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| 400 | WRITE(numout,*) ' Output heat/salt budget or not ln_limdiaout = ', ln_limdiaout |
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| 401 | ENDIF |
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| 402 | ! |
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| 403 | !IF( lk_mpp .AND. ln_nicep ) THEN |
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| 404 | ! ln_nicep = .FALSE. |
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| 405 | ! CALL ctl_warn( 'ice_run : specific control print for LIM3 desactivated with MPI' ) |
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| 406 | !ENDIF |
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| 407 | IF( ln_nicep ) THEN ! control print at a given point |
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| 408 | jiindx = 15 ; jjindx = 44 |
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| 409 | IF(lwp) WRITE(numout,*) ' The debugging point is : jiindx : ',jiindx, ' jjindx : ',jjindx |
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| 410 | ENDIF |
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| 411 | ! |
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[5053] | 412 | ! sea-ice timestep and inverse |
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| 413 | rdt_ice = nn_fsbc * rdttra(1) |
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| 414 | r1_rdtice = 1._wp / rdt_ice |
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| 415 | ! |
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[5051] | 416 | END SUBROUTINE ice_run |
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| 417 | |
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| 418 | |
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| 419 | SUBROUTINE lim_itd_init |
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| 420 | !!------------------------------------------------------------------ |
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| 421 | !! *** ROUTINE lim_itd_init *** |
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| 422 | !! |
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| 423 | !! ** Purpose : Initializes the ice thickness distribution |
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| 424 | !! ** Method : ... |
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| 425 | !! Note : hi_max(jpl) is here set up to a value close to 7 m for |
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| 426 | !! limistate (only) and is changed to 99 m in sbc_lim_init |
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| 427 | !!------------------------------------------------------------------ |
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| 428 | INTEGER :: jl ! dummy loop index |
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| 429 | REAL(wp) :: zc1, zc2, zc3, zx1 ! local scalars |
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| 430 | REAL(wp) :: zhmax, znum, zden, zalpha ! |
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| 431 | !!------------------------------------------------------------------ |
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| 432 | |
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| 433 | IF(lwp) WRITE(numout,*) |
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| 434 | IF(lwp) WRITE(numout,*) 'lim_itd_init : Initialization of ice thickness distribution ' |
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| 435 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~' |
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| 436 | |
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| 437 | !------------------------------------------------------------------------------! |
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| 438 | ! 1) Ice thickness distribution parameters initialization |
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| 439 | !------------------------------------------------------------------------------! |
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| 440 | IF(lwp) WRITE(numout,*) ' Number of ice categories jpl = ', jpl |
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| 441 | |
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| 442 | !- Thickness categories boundaries |
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| 443 | !---------------------------------- |
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| 444 | ! Clem - je sais pas encore dans quelle namelist les mettre, ca depend des chgts liés à bdy |
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| 445 | nn_hibnd = 2 ! thickness category boundaries: tanh function (1) h^(-alpha) (2) |
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| 446 | rn_hibnd = 2.5 ! mean thickness of the domain (used to compute category boundaries, nn_hibnd = 2 only) |
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| 447 | |
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| 448 | hi_max(:) = 0._wp |
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| 449 | |
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| 450 | SELECT CASE ( nn_hibnd ) |
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| 451 | !---------------------- |
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| 452 | CASE (1) ! tanh function (CICE) |
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| 453 | !---------------------- |
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| 454 | zc1 = 3._wp / REAL( jpl, wp ) |
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| 455 | zc2 = 10._wp * zc1 |
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| 456 | zc3 = 3._wp |
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| 457 | |
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| 458 | DO jl = 1, jpl |
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| 459 | zx1 = REAL( jl-1, wp ) / REAL( jpl, wp ) |
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| 460 | hi_max(jl) = hi_max(jl-1) + zc1 + zc2 * (1._wp + TANH( zc3 * (zx1 - 1._wp ) ) ) |
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| 461 | END DO |
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| 462 | |
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| 463 | !---------------------- |
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| 464 | CASE (2) ! h^(-alpha) function |
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| 465 | !---------------------- |
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| 466 | zalpha = 0.05 ! exponent of the transform function |
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| 467 | |
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| 468 | zhmax = 3.*rn_hibnd |
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| 469 | |
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| 470 | DO jl = 1, jpl |
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| 471 | znum = jpl * ( zhmax+1 )**zalpha |
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| 472 | zden = ( jpl - jl ) * ( zhmax+1 )**zalpha + jl |
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| 473 | hi_max(jl) = ( znum / zden )**(1./zalpha) - 1 |
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| 474 | END DO |
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| 475 | |
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| 476 | END SELECT |
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| 477 | |
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| 478 | DO jl = 1, jpl |
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| 479 | hi_mean(jl) = ( hi_max(jl) + hi_max(jl-1) ) * 0.5_wp |
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| 480 | END DO |
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| 481 | ! Set hi_max(jpl) to a big value to ensure that all ice is thinner than hi_max(jpl) |
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| 482 | hi_max(jpl) = 99._wp |
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| 483 | |
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| 484 | IF(lwp) WRITE(numout,*) ' Thickness category boundaries ' |
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| 485 | IF(lwp) WRITE(numout,*) ' hi_max ', hi_max(0:jpl) |
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| 486 | ! |
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| 487 | END SUBROUTINE lim_itd_init |
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| 488 | |
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[4990] | 489 | |
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[5051] | 490 | SUBROUTINE ice_lim_flx( ptn_ice, palb_ice, pqns_ice, pqsr_ice, & |
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[4990] | 491 | & pdqn_ice, pqla_ice, pdql_ice, k_limflx ) |
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| 492 | !!--------------------------------------------------------------------- |
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| 493 | !! *** ROUTINE sbc_ice_lim *** |
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| 494 | !! |
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| 495 | !! ** Purpose : update the ice surface boundary condition by averaging and / or |
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| 496 | !! redistributing fluxes on ice categories |
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| 497 | !! |
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| 498 | !! ** Method : average then redistribute |
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| 499 | !! |
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| 500 | !! ** Action : |
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| 501 | !!--------------------------------------------------------------------- |
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| 502 | INTEGER , INTENT(in ) :: k_limflx ! =-1 do nothing; =0 average ; |
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| 503 | ! =1 average and redistribute ; =2 redistribute |
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| 504 | REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: ptn_ice ! ice surface temperature |
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| 505 | REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: palb_ice ! ice albedo |
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| 506 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: pqns_ice ! non solar flux |
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| 507 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: pqsr_ice ! net solar flux |
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| 508 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: pdqn_ice ! non solar flux sensitivity |
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| 509 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: pqla_ice ! latent heat flux |
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| 510 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: pdql_ice ! latent heat flux sensitivity |
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| 511 | ! |
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| 512 | INTEGER :: jl ! dummy loop index |
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| 513 | ! |
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| 514 | REAL(wp), POINTER, DIMENSION(:,:) :: zalb_m ! Mean albedo over all categories |
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| 515 | REAL(wp), POINTER, DIMENSION(:,:) :: ztem_m ! Mean temperature over all categories |
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| 516 | ! |
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| 517 | REAL(wp), POINTER, DIMENSION(:,:) :: z_qsr_m ! Mean solar heat flux over all categories |
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| 518 | REAL(wp), POINTER, DIMENSION(:,:) :: z_qns_m ! Mean non solar heat flux over all categories |
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| 519 | REAL(wp), POINTER, DIMENSION(:,:) :: z_qla_m ! Mean latent heat flux over all categories |
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| 520 | REAL(wp), POINTER, DIMENSION(:,:) :: z_dqn_m ! Mean d(qns)/dT over all categories |
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| 521 | REAL(wp), POINTER, DIMENSION(:,:) :: z_dql_m ! Mean d(qla)/dT over all categories |
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| 522 | !!---------------------------------------------------------------------- |
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[888] | 523 | |
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[4990] | 524 | IF( nn_timing == 1 ) CALL timing_start('ice_lim_flx') |
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| 525 | ! |
---|
| 526 | ! |
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| 527 | SELECT CASE( k_limflx ) !== averaged on all ice categories ==! |
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| 528 | CASE( 0 , 1 ) |
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| 529 | CALL wrk_alloc( jpi,jpj, z_qsr_m, z_qns_m, z_qla_m, z_dqn_m, z_dql_m) |
---|
| 530 | ! |
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| 531 | z_qns_m(:,:) = fice_ice_ave ( pqns_ice (:,:,:) ) |
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| 532 | z_qsr_m(:,:) = fice_ice_ave ( pqsr_ice (:,:,:) ) |
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| 533 | z_dqn_m(:,:) = fice_ice_ave ( pdqn_ice (:,:,:) ) |
---|
| 534 | z_qla_m(:,:) = fice_ice_ave ( pqla_ice (:,:,:) ) |
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| 535 | z_dql_m(:,:) = fice_ice_ave ( pdql_ice (:,:,:) ) |
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| 536 | DO jl = 1, jpl |
---|
| 537 | pdqn_ice(:,:,jl) = z_dqn_m(:,:) |
---|
| 538 | pdql_ice(:,:,jl) = z_dql_m(:,:) |
---|
| 539 | END DO |
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| 540 | ! |
---|
| 541 | DO jl = 1, jpl |
---|
| 542 | pqns_ice(:,:,jl) = z_qns_m(:,:) |
---|
| 543 | pqsr_ice(:,:,jl) = z_qsr_m(:,:) |
---|
| 544 | pqla_ice(:,:,jl) = z_qla_m(:,:) |
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| 545 | END DO |
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| 546 | ! |
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| 547 | CALL wrk_dealloc( jpi,jpj, z_qsr_m, z_qns_m, z_qla_m, z_dqn_m, z_dql_m) |
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| 548 | END SELECT |
---|
[888] | 549 | |
---|
[4990] | 550 | SELECT CASE( k_limflx ) !== redistribution on all ice categories ==! |
---|
| 551 | CASE( 1 , 2 ) |
---|
| 552 | CALL wrk_alloc( jpi,jpj, zalb_m, ztem_m ) |
---|
| 553 | ! |
---|
| 554 | zalb_m(:,:) = fice_ice_ave ( palb_ice (:,:,:) ) |
---|
| 555 | ztem_m(:,:) = fice_ice_ave ( ptn_ice (:,:,:) ) |
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| 556 | DO jl = 1, jpl |
---|
| 557 | pqns_ice(:,:,jl) = pqns_ice(:,:,jl) + pdqn_ice(:,:,jl) * (ptn_ice(:,:,jl) - ztem_m(:,:)) |
---|
| 558 | pqla_ice(:,:,jl) = pqla_ice(:,:,jl) + pdql_ice(:,:,jl) * (ptn_ice(:,:,jl) - ztem_m(:,:)) |
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| 559 | pqsr_ice(:,:,jl) = pqsr_ice(:,:,jl) * ( 1._wp - palb_ice(:,:,jl) ) / ( 1._wp - zalb_m(:,:) ) |
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| 560 | END DO |
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| 561 | ! |
---|
| 562 | CALL wrk_dealloc( jpi,jpj, zalb_m, ztem_m ) |
---|
| 563 | END SELECT |
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| 564 | ! |
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| 565 | IF( nn_timing == 1 ) CALL timing_stop('ice_lim_flx') |
---|
| 566 | ! |
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| 567 | END SUBROUTINE ice_lim_flx |
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[888] | 568 | |
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[5053] | 569 | SUBROUTINE sbc_lim_diag0 |
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[5051] | 570 | !!---------------------------------------------------------------------- |
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| 571 | !! *** ROUTINE sbc_lim_flx0 *** |
---|
[888] | 572 | !! |
---|
[5051] | 573 | !! ** purpose : set ice-ocean and ice-atm. fluxes to zeros at the beggining |
---|
| 574 | !! of the time step |
---|
| 575 | !!---------------------------------------------------------------------- |
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| 576 | sfx (:,:) = 0._wp ; |
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| 577 | sfx_bri(:,:) = 0._wp ; |
---|
| 578 | sfx_sni(:,:) = 0._wp ; sfx_opw(:,:) = 0._wp |
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| 579 | sfx_bog(:,:) = 0._wp ; sfx_dyn(:,:) = 0._wp |
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| 580 | sfx_bom(:,:) = 0._wp ; sfx_sum(:,:) = 0._wp |
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| 581 | sfx_res(:,:) = 0._wp |
---|
| 582 | |
---|
| 583 | wfx_snw(:,:) = 0._wp ; wfx_ice(:,:) = 0._wp |
---|
| 584 | wfx_sni(:,:) = 0._wp ; wfx_opw(:,:) = 0._wp |
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| 585 | wfx_bog(:,:) = 0._wp ; wfx_dyn(:,:) = 0._wp |
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| 586 | wfx_bom(:,:) = 0._wp ; wfx_sum(:,:) = 0._wp |
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| 587 | wfx_res(:,:) = 0._wp ; wfx_sub(:,:) = 0._wp |
---|
| 588 | wfx_spr(:,:) = 0._wp ; |
---|
| 589 | |
---|
| 590 | hfx_in (:,:) = 0._wp ; hfx_out(:,:) = 0._wp |
---|
| 591 | hfx_thd(:,:) = 0._wp ; |
---|
| 592 | hfx_snw(:,:) = 0._wp ; hfx_opw(:,:) = 0._wp |
---|
| 593 | hfx_bog(:,:) = 0._wp ; hfx_dyn(:,:) = 0._wp |
---|
| 594 | hfx_bom(:,:) = 0._wp ; hfx_sum(:,:) = 0._wp |
---|
| 595 | hfx_res(:,:) = 0._wp ; hfx_sub(:,:) = 0._wp |
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| 596 | hfx_spr(:,:) = 0._wp ; hfx_dif(:,:) = 0._wp |
---|
| 597 | hfx_err(:,:) = 0._wp ; hfx_err_rem(:,:) = 0._wp |
---|
[888] | 598 | |
---|
[5051] | 599 | afx_tot(:,:) = 0._wp ; |
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| 600 | afx_dyn(:,:) = 0._wp ; afx_thd(:,:) = 0._wp |
---|
| 601 | |
---|
[5053] | 602 | END SUBROUTINE sbc_lim_diag0 |
---|
[5051] | 603 | |
---|
[4990] | 604 | FUNCTION fice_cell_ave ( ptab ) |
---|
| 605 | !!-------------------------------------------------------------------------- |
---|
| 606 | !! * Compute average over categories, for grid cell (ice covered and free ocean) |
---|
| 607 | !!-------------------------------------------------------------------------- |
---|
| 608 | REAL (wp), DIMENSION (jpi,jpj) :: fice_cell_ave |
---|
| 609 | REAL (wp), DIMENSION (jpi,jpj,jpl), INTENT (in) :: ptab |
---|
| 610 | INTEGER :: jl ! Dummy loop index |
---|
| 611 | |
---|
| 612 | fice_cell_ave (:,:) = 0.0_wp |
---|
| 613 | |
---|
| 614 | DO jl = 1, jpl |
---|
[5053] | 615 | fice_cell_ave (:,:) = fice_cell_ave (:,:) + a_i (:,:,jl) * ptab (:,:,jl) |
---|
[4990] | 616 | END DO |
---|
| 617 | |
---|
| 618 | END FUNCTION fice_cell_ave |
---|
| 619 | |
---|
| 620 | |
---|
| 621 | FUNCTION fice_ice_ave ( ptab ) |
---|
| 622 | !!-------------------------------------------------------------------------- |
---|
| 623 | !! * Compute average over categories, for ice covered part of grid cell |
---|
| 624 | !!-------------------------------------------------------------------------- |
---|
| 625 | REAL (kind=wp), DIMENSION (jpi,jpj) :: fice_ice_ave |
---|
| 626 | REAL (kind=wp), DIMENSION (jpi,jpj,jpl), INTENT(in) :: ptab |
---|
[888] | 627 | |
---|
[4990] | 628 | fice_ice_ave (:,:) = 0.0_wp |
---|
| 629 | WHERE ( at_i (:,:) .GT. 0.0_wp ) fice_ice_ave (:,:) = fice_cell_ave ( ptab (:,:,:)) / at_i (:,:) |
---|
| 630 | |
---|
| 631 | END FUNCTION fice_ice_ave |
---|
| 632 | |
---|
| 633 | |
---|
[888] | 634 | #else |
---|
| 635 | !!---------------------------------------------------------------------- |
---|
| 636 | !! Default option Dummy module NO LIM 3.0 sea-ice model |
---|
| 637 | !!---------------------------------------------------------------------- |
---|
| 638 | CONTAINS |
---|
[2528] | 639 | SUBROUTINE sbc_ice_lim ( kt, kblk ) ! Dummy routine |
---|
| 640 | WRITE(*,*) 'sbc_ice_lim: You should not have seen this print! error?', kt, kblk |
---|
[888] | 641 | END SUBROUTINE sbc_ice_lim |
---|
| 642 | #endif |
---|
| 643 | |
---|
| 644 | !!====================================================================== |
---|
| 645 | END MODULE sbcice_lim |
---|