| 1 | MODULE icestp1d |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE icestp1d *** |
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| 4 | !! Sea-Ice model : 1D LIM Sea ice model time-stepping |
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| 5 | !!====================================================================== |
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| 6 | #if defined key_cfg_1d && defined key_ice_lim |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! 'key_cfg_1d' 1D Configuration |
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| 9 | !! 'key_ice_lim' : Lim sea-ice model |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! ice_stp_1d : sea-ice model time-stepping |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | USE dom_oce |
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| 14 | USE oce ! dynamics and tracers variables |
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| 15 | USE in_out_manager |
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| 16 | USE ice_oce ! ice variables |
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| 17 | USE flx_oce ! forcings variables |
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| 18 | USE dom_ice |
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| 19 | USE cpl_oce |
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| 20 | USE blk_oce |
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| 21 | USE daymod |
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| 22 | USE phycst ! Define parameters for the routines |
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| 23 | USE taumod |
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| 24 | USE ice |
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| 25 | USE iceini |
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| 26 | USE lbclnk |
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| 27 | USE limdyn |
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| 28 | USE limtrp |
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| 29 | USE limthd |
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| 30 | USE limflx |
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| 31 | USE limdia |
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| 32 | USE limwri |
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| 33 | USE limrst |
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| 34 | |
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| 35 | USE ocesbc |
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| 36 | USE flxmod |
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| 37 | USE flxrnf |
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| 38 | USE tradmp ! damping salinity trend |
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| 39 | USE dtatem |
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| 40 | USE dtasal |
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| 41 | USE ocfzpt |
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| 42 | USE prtctl ! Print control |
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| 43 | |
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| 44 | |
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| 45 | IMPLICIT NONE |
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| 46 | PRIVATE |
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| 47 | |
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| 48 | !! * Routine accessibility |
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| 49 | PUBLIC ice_stp_1d ! called by step.F90 |
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| 50 | |
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| 51 | !! * Substitutions |
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| 52 | # include "domzgr_substitute.h90" |
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| 53 | # include "vectopt_loop_substitute.h90" |
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| 54 | !!----------------------------------------------------- |
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| 55 | !! LIM 2.0 , UCL-LOCEAN-IPSL (2005) |
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| 56 | !! $Header$ |
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| 57 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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| 58 | !!----------------------------------------------------- |
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| 59 | |
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| 60 | CONTAINS |
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| 61 | |
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| 62 | SUBROUTINE ice_stp_1d ( kt ) |
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| 63 | !!--------------------------------------------------------------------- |
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| 64 | !! *** ROUTINE ice_stp_1d *** |
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| 65 | !! |
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| 66 | !! ** Purpose : Louvain la Neuve Sea Ice Model time stepping |
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| 67 | !! |
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| 68 | !! ** Action : - call the ice dynamics routine |
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| 69 | !! - call the ice advection/diffusion routine |
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| 70 | !! - call the ice thermodynamics routine |
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| 71 | !! - call the routine that computes mass and |
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| 72 | !! heat fluxes at the ice/ocean interface |
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| 73 | !! - save the outputs |
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| 74 | !! - save the outputs for restart when necessary |
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| 75 | !! |
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| 76 | !! History : |
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| 77 | !! 1.0 ! 99-11 (M. Imbard) Original code |
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| 78 | !! ! 01-03 (D. Ludicone, E. Durand, G. Madec) free surf. |
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| 79 | !! 2.0 ! 02-09 (G. Madec, C. Ethe) F90: Free form and module |
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| 80 | !! 9.0 ! 04-10 (C. Ethe) 1D configuration |
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| 81 | !!---------------------------------------------------------------------- |
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| 82 | !! * Arguments |
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| 83 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 84 | |
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| 85 | !! * Local declarations |
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| 86 | INTEGER :: ji, jj ! dummy loop indices |
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| 87 | |
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| 88 | REAL(wp) , DIMENSION(jpi,jpj) :: & |
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| 89 | zsss_io, zsss2_io, zsss3_io ! tempory workspaces |
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| 90 | REAL(wp) :: ztair2 |
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| 91 | !!---------------------------------------------------------------------- |
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| 92 | |
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| 93 | IF( kt == nit000 ) THEN |
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| 94 | IF(lwp) WRITE(numout,*) |
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| 95 | IF(lwp) WRITE(numout,*) 'ice_stp_1d : Louvain la Neuve Ice Model (LIM)' |
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| 96 | IF(lwp) WRITE(numout,*) '~~~~~~~ forced case using bulk formulea' |
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| 97 | ! Initialize fluxes fields |
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| 98 | gtaux(:,:) = 0.e0 |
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| 99 | gtauy(:,:) = 0.e0 |
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| 100 | ENDIF |
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| 101 | |
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| 102 | ! Temperature , salinity and horizonta wind |
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| 103 | ! sst_io and sss_io, u_io and v_io are initialized at nit000 in limistate.F90 (or limrst.F90) with : |
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| 104 | ! sst_io = sst_io + (nfice - 1) * (tn(:,:,1)+rt0 ) |
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| 105 | ! sss_io = sss_io + (nfice - 1) * sn(:,:,1) |
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| 106 | ! u_io = u_io + (nfice - 1) * un(:,:,1) |
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| 107 | ! v_io = v_io + (nfice - 1) * vn(:,:,1) |
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| 108 | ! cumulate fields |
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| 109 | ! |
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| 110 | sst_io(:,:) = sst_io(:,:) + tn(:,:,1) + rt0 |
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| 111 | sss_io(:,:) = sss_io(:,:) + sn(:,:,1) |
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| 112 | u_io (:,:) = u_io (:,:) + un(:,:,1) |
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| 113 | v_io (:,:) = v_io (:,:) + vn(:,:,1) |
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| 114 | |
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| 115 | |
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| 116 | |
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| 117 | IF( MOD( kt-1, nfice ) == 0 ) THEN |
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| 118 | |
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| 119 | ! The LIM model is going to be call |
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| 120 | sst_io(:,:) = sst_io(:,:) / FLOAT( nfice ) * tmask(:,:,1) |
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| 121 | sss_io(:,:) = sss_io(:,:) / FLOAT( nfice ) |
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| 122 | u_io (:,:) = u_io (:,:) / FLOAT( nfice ) |
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| 123 | v_io (:,:) = v_io (:,:) / FLOAT( nfice ) |
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| 124 | gtaux (:,:) = taux (:,:) |
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| 125 | gtauy (:,:) = tauy (:,:) |
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| 126 | |
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| 127 | zsss_io (:,:) = SQRT( sss_io(:,:) ) |
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| 128 | zsss2_io(:,:) = sss_io(:,:) * sss_io(:,:) |
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| 129 | zsss3_io(:,:) = zsss_io(:,:) * zsss_io(:,:) * zsss_io(:,:) |
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| 130 | |
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| 131 | DO jj = 1, jpj |
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| 132 | DO ji = 1, jpi |
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| 133 | tfu(ji,jj) = ABS ( rt0 - 0.0575 * sss_io(ji,jj) & |
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| 134 | & + 1.710523e-03 * zsss3_io(ji,jj) & |
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| 135 | & - 2.154996e-04 * zsss2_io(ji,jj) ) * tms(ji,jj) |
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| 136 | END DO |
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| 137 | END DO |
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| 138 | |
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| 139 | |
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| 140 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 141 | CALL prt_ctl_info('Ice Forcings ') |
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| 142 | CALL prt_ctl(tab2d_1=qsr_oce ,clinfo1=' qsr_oce : ', tab2d_2=qsr_ice , clinfo2=' qsr_ice : ') |
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| 143 | CALL prt_ctl(tab2d_1=qnsr_oce,clinfo1=' qnsr_oce : ', tab2d_2=qnsr_ice, clinfo2=' qnsr_ice : ') |
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| 144 | CALL prt_ctl(tab2d_1=evap ,clinfo1=' evap : ') |
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| 145 | CALL prt_ctl(tab2d_1=tprecip ,clinfo1=' precip : ', tab2d_2=sprecip , clinfo2=' Snow : ') |
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| 146 | CALL prt_ctl(tab2d_1=gtaux ,clinfo1=' u-stress : ', tab2d_2=gtauy , clinfo2=' v-stress : ') |
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| 147 | CALL prt_ctl(tab2d_1=sst_io ,clinfo1=' sst : ', tab2d_2=sss_io , clinfo2=' sss : ') |
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| 148 | CALL prt_ctl(tab2d_1=u_io ,clinfo1=' u_io : ', tab2d_2=v_io , clinfo2=' v_io : ') |
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| 149 | CALL prt_ctl(tab2d_1=hsnif ,clinfo1=' hsnif 1 : ', tab2d_2=hicif , clinfo2=' hicif : ') |
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| 150 | CALL prt_ctl(tab2d_1=frld ,clinfo1=' frld 1 : ', tab2d_2=sist , clinfo2=' sist : ') |
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| 151 | ENDIF |
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| 152 | |
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| 153 | ! Ice model call |
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| 154 | numit = numit + nfice ! Friction velocity |
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| 155 | |
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| 156 | DO jj = 1, jpj |
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| 157 | DO ji = 1, jpi |
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| 158 | tio_u(ji,jj) = - gtaux(ji,jj) / rau0 |
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| 159 | tio_v(ji,jj) = - gtauy(ji,jj) / rau0 |
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| 160 | ztair2 = gtaux(ji,jj) * gtaux(ji,jj) + gtauy(ji,jj) * gtauy(ji,jj) |
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| 161 | ust2s(ji,jj) = ( SQRT( ztair2 ) / rau0 ) * tms(ji,jj) |
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| 162 | END DO |
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| 163 | END DO |
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| 164 | |
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| 165 | ! !--------------------! |
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| 166 | CALL lim_thd ! Ice thermodynamics ! |
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| 167 | ! !--------------------! |
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| 168 | IF(ln_ctl) THEN |
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| 169 | CALL prt_ctl(tab2d_1=hsnif ,clinfo1=' hsnif 2 : ', tab2d_2=hicif , clinfo2=' hicif : ') |
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| 170 | CALL prt_ctl(tab2d_1=frld ,clinfo1=' frld 2 : ', tab2d_2=sist , clinfo2=' sist : ') |
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| 171 | CALL prt_ctl(tab2d_1=u_io ,clinfo1=' u_io 4 : ', tab2d_2=v_io , clinfo2=' v_io : ') |
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| 172 | CALL prt_ctl(tab2d_1=tio_u ,clinfo1=' tio_u 4 : ', tab2d_2=tio_v , clinfo2=' tio_v : ') |
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| 173 | ENDIF |
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| 174 | |
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| 175 | |
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| 176 | |
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| 177 | ! Mass and heat fluxes from ice to ocean |
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| 178 | ! !------------------------------! |
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| 179 | CALL lim_flx ! Ice/Ocean Mass & Heat fluxes ! |
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| 180 | ! !------------------------------! |
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| 181 | |
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| 182 | IF(ln_ctl) THEN |
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| 183 | CALL prt_ctl(tab2d_1=hsnif ,clinfo1=' hsnif 7 : ', tab2d_2=hicif , clinfo2=' hicif : ') |
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| 184 | CALL prt_ctl(tab2d_1=frld ,clinfo1=' frld 7 : ', tab2d_2=sist , clinfo2=' sist : ') |
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| 185 | CALL prt_ctl(tab2d_1=tio_u ,clinfo1=' tio_u 7 : ', tab2d_2=tio_v , clinfo2=' tio_v : ') |
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| 186 | ENDIF |
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| 187 | ! !-------------! |
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| 188 | CALL lim_wri ! Ice outputs ! |
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| 189 | ! !-------------! |
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| 190 | |
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| 191 | IF( MOD( numit, nstock ) == 0 .OR. numit == nlast ) THEN |
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| 192 | ! !------------------! |
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| 193 | CALL lim_rst_write( numit ) ! Ice restart file ! |
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| 194 | ! !------------------! |
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| 195 | ENDIF |
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| 196 | |
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| 197 | ! Re-initialization of forcings |
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| 198 | qsr_oce (:,:) = 0.e0 |
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| 199 | qsr_ice (:,:) = 0.e0 |
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| 200 | qnsr_oce(:,:) = 0.e0 |
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| 201 | qnsr_ice(:,:) = 0.e0 |
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| 202 | dqns_ice(:,:) = 0.e0 |
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| 203 | tprecip (:,:) = 0.e0 |
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| 204 | sprecip (:,:) = 0.e0 |
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| 205 | qla_ice (:,:) = 0.e0 |
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| 206 | dqla_ice(:,:) = 0.e0 |
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| 207 | fr1_i0 (:,:) = 0.e0 |
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| 208 | fr2_i0 (:,:) = 0.e0 |
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| 209 | evap (:,:) = 0.e0 |
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| 210 | |
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| 211 | CALL oce_sbc_1d ( kt ) |
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| 212 | |
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| 213 | ENDIF |
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| 214 | |
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| 215 | END SUBROUTINE ice_stp_1d |
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| 216 | |
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| 217 | |
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| 218 | SUBROUTINE oce_sbc_1d( kt ) |
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| 219 | !!--------------------------------------------------------------------- |
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| 220 | !! *** ROUTINE oce_sbc_1d *** |
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| 221 | !! |
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| 222 | !! ** Purpose : - Ocean surface boundary conditions with LIM sea-ice |
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| 223 | !! model in forced mode using bulk formulea |
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| 224 | !! |
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| 225 | !! History : |
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| 226 | !! 1.0 ! 99-11 (M. Imbard) Original code |
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| 227 | !! ! 01-03 (D. Ludicone, E. Durand, G. Madec) free surf. |
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| 228 | !! 2.0 ! 02-09 (G. Madec, C. Ethe) F90: Free form and module |
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| 229 | !!---------------------------------------------------------------------- |
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| 230 | !! * arguments |
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| 231 | INTEGER, INTENT( in ) :: kt ! ocean time step |
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| 232 | |
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| 233 | !! * Local declarations |
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| 234 | INTEGER :: ji, jj ! dummy loop indices |
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| 235 | REAL(wp) :: ztxy |
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| 236 | !!---------------------------------------------------------------------- |
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| 237 | |
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| 238 | ! 1. initialization to zero at kt = nit000 |
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| 239 | ! --------------------------------------- |
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| 240 | |
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| 241 | IF( kt == nit000 ) THEN |
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| 242 | qsr (:,:) = 0.e0 |
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| 243 | qt (:,:) = 0.e0 |
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| 244 | qrp (:,:) = 0.e0 |
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| 245 | emp (:,:) = 0.e0 |
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| 246 | emps (:,:) = 0.e0 |
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| 247 | erp (:,:) = 0.e0 |
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| 248 | #if defined key_dynspg_fsc |
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| 249 | dmp (:,:) = 0.e0 |
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| 250 | #endif |
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| 251 | ENDIF |
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| 252 | |
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| 253 | CALL oce_sbc_dmp ! Computation of internal and evaporation damping terms |
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| 254 | |
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| 255 | ! Surface Ocean fluxes |
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| 256 | ! ==================== |
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| 257 | |
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| 258 | ! Surface heat flux (W/m2) |
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| 259 | ! ----------------- |
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| 260 | |
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| 261 | qt (:,:) = fnsolar(:,:) + fsolar(:,:) ! non solar heat flux + solar flux |
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| 262 | qsr (:,:) = fsolar(:,:) ! solar flux |
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| 263 | |
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| 264 | #if defined key_dynspg_fsc |
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| 265 | ! total concentration/dilution effect (use on SSS) |
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| 266 | emps(:,:) = fmass(:,:) + fsalt(:,:) + runoff(:,:) + erp(:,:) + empold |
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| 267 | |
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| 268 | ! total volume flux (use on sea-surface height) |
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| 269 | emp (:,:) = fmass(:,:) - dmp(:,:) + runoff(:,:) + erp(:,:) + empold |
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| 270 | #else |
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| 271 | ! Rigid-lid (emp=emps=E-P-R+Erp) |
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| 272 | emps(:,:) = fmass(:,:) + fsalt(:,:) + runoff(:,:) + erp(:,:) ! freshwater flux |
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| 273 | emp (:,:) = emps(:,:) |
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| 274 | |
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| 275 | #endif |
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| 276 | |
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| 277 | ! Surface stress |
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| 278 | ! -------------- |
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| 279 | |
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| 280 | ! update the stress beloww sea-ice area |
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| 281 | DO jj = 1, jpjm1 |
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| 282 | DO ji = 1, fs_jpim1 ! vertor opt. |
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| 283 | ztxy = freezn(ji,jj) ! ice/ocean indicator at T-points |
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| 284 | taux(ji,jj) = (1.-ztxy) * taux(ji,jj) + ztxy * ftaux(ji,jj) ! stress at the ocean surface |
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| 285 | tauy(ji,jj) = (1.-ztxy) * tauy(ji,jj) + ztxy * ftauy(ji,jj) |
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| 286 | END DO |
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| 287 | END DO |
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| 288 | |
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| 289 | ! boundary condition on the stress (taux,tauy) |
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| 290 | CALL lbc_lnk( taux, 'U', -1. ) |
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| 291 | CALL lbc_lnk( tauy, 'V', -1. ) |
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| 292 | |
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| 293 | ! Re-initialization of fluxes |
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| 294 | sst_io(:,:) = 0.e0 |
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| 295 | sss_io(:,:) = 0.e0 |
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| 296 | u_io (:,:) = 0.e0 |
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| 297 | v_io (:,:) = 0.e0 |
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| 298 | |
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| 299 | |
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| 300 | END SUBROUTINE oce_sbc_1d |
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| 301 | |
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| 302 | #if defined key_dtasal |
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| 303 | !!---------------------------------------------------------------------- |
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| 304 | !! 'key_dtasal' salinity data |
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| 305 | !!---------------------------------------------------------------------- |
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| 306 | SUBROUTINE oce_sbc_dmp |
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| 307 | !!--------------------------------------------------------------------- |
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| 308 | !! *** ROUTINE oce_sbc_dmp *** |
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| 309 | !! |
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| 310 | !! ** Purpose : Computation of internal and evaporation damping terms |
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| 311 | !! for ocean surface boundary conditions |
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| 312 | !! |
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| 313 | !! History : |
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| 314 | !! 9.0 ! 04-01 (G. Madec, C. Ethe) Original code |
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| 315 | !!---------------------------------------------------------------------- |
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| 316 | !! * Local declarations |
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| 317 | INTEGER :: ji, jj ! dummy loop indices |
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| 318 | REAL(wp) :: zerp, ztrp, zsrp |
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| 319 | #if defined key_dynspg_fsc |
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| 320 | REAL(wp) :: zwei |
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| 321 | REAL(wp) :: zerpplus(jpi,jpj), zerpminus(jpi,jpj) |
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| 322 | REAL(wp) :: zplus, zminus, zadefi |
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| 323 | # if defined key_tradmp |
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| 324 | INTEGER jk |
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| 325 | REAL(wp), DIMENSION(jpi,jpj) :: zstrdmp |
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| 326 | # endif |
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| 327 | #endif |
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| 328 | !!---------------------------------------------------------------------- |
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| 329 | |
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| 330 | |
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| 331 | ! sea ice indicator (1 or 0) |
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| 332 | DO jj = 1, jpj |
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| 333 | DO ji = 1, jpi |
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| 334 | freezn(ji,jj) = MAX(0., SIGN(1., freeze(ji,jj)-rsmall) ) |
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| 335 | END DO |
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| 336 | END DO |
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| 337 | |
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| 338 | ! Initialisation |
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| 339 | ! -------------- |
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| 340 | ! Restoring coefficients on SST and SSS |
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| 341 | ztrp = -40. ! (W/m2/K) |
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| 342 | zsrp = ztrp * ro0cpr * rauw ! (Kg/m2/s2) |
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| 343 | |
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| 344 | #if defined key_dynspg_fsc |
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| 345 | ! Free-surface |
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| 346 | |
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| 347 | ! Internal damping |
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| 348 | # if defined key_tradmp |
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| 349 | ! Vertical mean of dampind trend (computed in tradmp module) |
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| 350 | zstrdmp(:,:) = 0.e0 |
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| 351 | DO jk = 1, jpk |
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| 352 | zstrdmp(:,:) = zstrdmp(:,:) + strdmp(:,:,jk) * fse3t(:,:,jk) |
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| 353 | END DO |
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| 354 | ! volume flux associated to internal damping to climatology |
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| 355 | dmp(:,:) = zstrdmp(:,:) * rauw / ( sss_io(:,:) + 1.e-20 ) |
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| 356 | # else |
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| 357 | dmp(:,:) = 0.e0 ! No internal damping |
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| 358 | # endif |
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| 359 | |
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| 360 | ! evaporation damping term ( Surface restoring ) |
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| 361 | zerpplus (:,:) = 0.e0 |
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| 362 | zerpminus(:,:) = 0.e0 |
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| 363 | zplus = 15. / rday |
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| 364 | zminus = -15. / rday |
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| 365 | |
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| 366 | DO jj = 1, jpj |
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| 367 | DO ji = 1, jpi |
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| 368 | zerp = ( 1. - 2.*upsrnfh(ji,jj) ) * zsrp & |
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| 369 | & * ( sss_io(ji,jj) - s_dta(ji,jj,1) ) & |
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| 370 | & / ( sss_io(ji,jj) + 1.e-20 ) |
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| 371 | erp(ji,jj) = zerp |
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| 372 | zerpplus (ji,jj) = MAX( erp(ji,jj), 0.e0 ) |
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| 373 | zerpminus(ji,jj) = MIN( erp(ji,jj), 0.e0 ) |
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| 374 | END DO |
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| 375 | END DO |
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| 376 | |
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| 377 | aplus = 0.e0 |
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| 378 | aminus = 0.e0 |
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| 379 | DO jj = 1, jpj |
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| 380 | DO ji = 1, jpi |
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| 381 | zwei = e1t(ji,jj) * e2t(ji,jj) * tmask_i(ji,jj) |
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| 382 | aplus = aplus + zerpplus (ji,jj) * zwei |
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| 383 | aminus = aminus - zerpminus(ji,jj) * zwei |
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| 384 | END DO |
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| 385 | END DO |
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| 386 | |
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| 387 | IF(ln_ctl) WRITE(numout,*) ' oce_sbc_dmp : a+ = ', aplus, ' a- = ', aminus |
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| 388 | #else |
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| 389 | ! Rigid-lid (emp=emps=E-P-R+Erp) |
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| 390 | |
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| 391 | erp(:,:) = ( 1. - freezn(:,:) ) * zsrp & ! surface restoring term |
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| 392 | & * ( sss_io(:,:) - s_dta(:,:,1) ) & |
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| 393 | & / ( sss_io(:,:) + 1.e-20 ) |
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| 394 | #endif |
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| 395 | |
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| 396 | END SUBROUTINE oce_sbc_dmp |
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| 397 | |
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| 398 | #else |
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| 399 | !!---------------------------------------------------------------------- |
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| 400 | !! Dummy routine NO salinity data |
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| 401 | !!---------------------------------------------------------------------- |
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| 402 | SUBROUTINE oce_sbc_dmp ! Dummy routine |
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| 403 | WRITE(*,*) 'oce_sbc_dmp: you should not have seen that print! error?' |
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| 404 | END SUBROUTINE oce_sbc_dmp |
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| 405 | #endif |
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| 406 | #else |
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| 407 | !!---------------------------------------------------------------------- |
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| 408 | !! Default option Dummy module NO 1D && NO LIM sea-ice model |
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| 409 | !!---------------------------------------------------------------------- |
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| 410 | CONTAINS |
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| 411 | SUBROUTINE ice_stp_1d ( kt ) ! Dummy routine |
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| 412 | WRITE(*,*) 'ice_stp_1d: You should not have seen this print! error?', kt |
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| 413 | END SUBROUTINE ice_stp_1d |
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| 414 | SUBROUTINE oce_sbc_1d ( kt ) ! Dummy routine |
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| 415 | WRITE(*,*) 'oce_sbc_1d: You should not have seen this print! error?', kt |
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| 416 | END SUBROUTINE oce_sbc_1d |
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| 417 | #endif |
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| 418 | !!====================================================================== |
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| 419 | END MODULE icestp1d |
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