[8426] | 1 | MODULE icecor |
---|
| 2 | !!====================================================================== |
---|
| 3 | !! *** MODULE icecor *** |
---|
| 4 | !! LIM-3 : Update of sea-ice global variables at the end of the time step |
---|
| 5 | !!====================================================================== |
---|
| 6 | !! History : 3.0 ! 2006-04 (M. Vancoppenolle) Original code |
---|
| 7 | !! 3.5 ! 2014-06 (C. Rousset) Complete rewriting/cleaning |
---|
| 8 | !!---------------------------------------------------------------------- |
---|
| 9 | #if defined key_lim3 |
---|
| 10 | !!---------------------------------------------------------------------- |
---|
| 11 | !! 'key_lim3' LIM3 sea-ice model |
---|
| 12 | !!---------------------------------------------------------------------- |
---|
| 13 | !! ice_cor : computes update of sea-ice global variables from trend terms |
---|
| 14 | !!---------------------------------------------------------------------- |
---|
| 15 | USE dom_oce |
---|
| 16 | USE phycst ! physical constants |
---|
| 17 | USE ice |
---|
| 18 | USE ice1D ! LIM thermodynamic sea-ice variables |
---|
| 19 | USE iceitd |
---|
| 20 | USE icevar |
---|
| 21 | USE icectl ! control prints |
---|
| 22 | ! |
---|
| 23 | USE in_out_manager ! I/O manager |
---|
| 24 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
---|
| 25 | USE lbclnk ! lateral boundary condition - MPP link |
---|
| 26 | USE lib_mpp ! MPP library |
---|
| 27 | USE timing ! Timing |
---|
| 28 | |
---|
| 29 | IMPLICIT NONE |
---|
| 30 | PRIVATE |
---|
| 31 | |
---|
| 32 | PUBLIC ice_cor |
---|
| 33 | |
---|
| 34 | !! * Substitutions |
---|
| 35 | # include "vectopt_loop_substitute.h90" |
---|
| 36 | !!---------------------------------------------------------------------- |
---|
| 37 | !! NEMO/LIM3 4.0 , UCL - NEMO Consortium (2011) |
---|
| 38 | !! $Id: icecor.F90 8378 2017-07-26 13:55:59Z clem $ |
---|
| 39 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
---|
| 40 | !!---------------------------------------------------------------------- |
---|
| 41 | CONTAINS |
---|
| 42 | |
---|
| 43 | SUBROUTINE ice_cor( kt , kn ) |
---|
| 44 | !!------------------------------------------------------------------- |
---|
| 45 | !! *** ROUTINE ice_cor *** |
---|
| 46 | !! |
---|
| 47 | !! ** Purpose : Computes update of sea-ice global variables at |
---|
| 48 | !! the end of the dynamics. |
---|
| 49 | !! |
---|
| 50 | !!--------------------------------------------------------------------- |
---|
| 51 | INTEGER, INTENT(in) :: kt ! number of iteration |
---|
| 52 | INTEGER, INTENT(in) :: kn ! 1 = after dyn ; 2 = after thermo |
---|
| 53 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
---|
| 54 | REAL(wp) :: zsal |
---|
| 55 | REAL(wp) :: zvi_b, zsmv_b, zei_b, zfs_b, zfw_b, zft_b |
---|
| 56 | !!------------------------------------------------------------------- |
---|
| 57 | IF( nn_timing == 1 ) CALL timing_start('icecor') |
---|
| 58 | |
---|
| 59 | IF( kt == nit000 .AND. lwp .AND. kn == 2 ) THEN |
---|
| 60 | WRITE(numout,*) |
---|
| 61 | WRITE(numout,*)' icecor ' |
---|
| 62 | WRITE(numout,*)' ~~~~~~ ' |
---|
| 63 | ENDIF |
---|
| 64 | |
---|
| 65 | ! conservation test |
---|
| 66 | IF( ln_limdiachk ) CALL ice_cons_hsm(0, 'icecor', zvi_b, zsmv_b, zei_b, zfw_b, zfs_b, zft_b) |
---|
| 67 | |
---|
| 68 | !---------------------------------------------------------------------- |
---|
| 69 | ! Constrain the thickness of the smallest category above himin |
---|
| 70 | !---------------------------------------------------------------------- |
---|
| 71 | IF( kn == 2 ) THEN |
---|
| 72 | |
---|
| 73 | DO jj = 1, jpj |
---|
| 74 | DO ji = 1, jpi |
---|
| 75 | rswitch = MAX( 0._wp , SIGN( 1._wp, a_i(ji,jj,1) - epsi20 ) ) !0 if no ice and 1 if yes |
---|
| 76 | ht_i(ji,jj,1) = v_i (ji,jj,1) / MAX( a_i(ji,jj,1) , epsi20 ) * rswitch |
---|
| 77 | IF( v_i(ji,jj,1) > 0._wp .AND. ht_i(ji,jj,1) < rn_himin ) THEN |
---|
| 78 | a_i (ji,jj,1) = a_i (ji,jj,1) * ht_i(ji,jj,1) / rn_himin |
---|
| 79 | ENDIF |
---|
| 80 | END DO |
---|
| 81 | END DO |
---|
| 82 | |
---|
| 83 | ENDIF |
---|
| 84 | |
---|
| 85 | !---------------------------------------------------- |
---|
| 86 | ! ice concentration should not exceed amax |
---|
| 87 | !----------------------------------------------------- |
---|
| 88 | at_i(:,:) = 0._wp |
---|
| 89 | DO jl = 1, jpl |
---|
| 90 | at_i(:,:) = a_i(:,:,jl) + at_i(:,:) |
---|
| 91 | END DO |
---|
| 92 | |
---|
| 93 | DO jl = 1, jpl |
---|
| 94 | DO jj = 1, jpj |
---|
| 95 | DO ji = 1, jpi |
---|
| 96 | IF( at_i(ji,jj) > rn_amax_2d(ji,jj) .AND. a_i(ji,jj,jl) > 0._wp ) THEN |
---|
| 97 | a_i (ji,jj,jl) = a_i (ji,jj,jl) * ( 1._wp - ( 1._wp - rn_amax_2d(ji,jj) / at_i(ji,jj) ) ) |
---|
| 98 | ENDIF |
---|
| 99 | END DO |
---|
| 100 | END DO |
---|
| 101 | END DO |
---|
| 102 | |
---|
| 103 | !--------------------- |
---|
| 104 | ! Ice salinity bounds |
---|
| 105 | !--------------------- |
---|
| 106 | IF ( nn_icesal == 2 ) THEN |
---|
| 107 | DO jl = 1, jpl |
---|
| 108 | DO jj = 1, jpj |
---|
| 109 | DO ji = 1, jpi |
---|
| 110 | zsal = smv_i(ji,jj,jl) |
---|
| 111 | ! salinity stays in bounds |
---|
| 112 | rswitch = 1._wp - MAX( 0._wp, SIGN( 1._wp, - v_i(ji,jj,jl) ) ) |
---|
| 113 | smv_i(ji,jj,jl) = rswitch * MAX( MIN( rn_simax * v_i(ji,jj,jl), smv_i(ji,jj,jl) ), rn_simin * v_i(ji,jj,jl) ) |
---|
| 114 | ! associated salt flux |
---|
| 115 | sfx_res(ji,jj) = sfx_res(ji,jj) - ( smv_i(ji,jj,jl) - zsal ) * rhoic * r1_rdtice |
---|
| 116 | END DO |
---|
| 117 | END DO |
---|
| 118 | END DO |
---|
| 119 | ENDIF |
---|
| 120 | |
---|
| 121 | !---------------------------------------------------- |
---|
| 122 | ! Rebin categories with thickness out of bounds |
---|
| 123 | !---------------------------------------------------- |
---|
| 124 | IF ( jpl > 1 ) CALL ice_itd_reb |
---|
| 125 | |
---|
| 126 | !----------------- |
---|
| 127 | ! zap small values |
---|
| 128 | !----------------- |
---|
| 129 | CALL ice_var_zapsmall |
---|
| 130 | |
---|
| 131 | !---------------------------------------------- |
---|
| 132 | ! Ice drift. Corrections to avoid wrong values |
---|
| 133 | !---------------------------------------------- |
---|
| 134 | IF( kn == 2 ) THEN |
---|
| 135 | DO jj = 2, jpjm1 |
---|
| 136 | DO ji = 2, jpim1 |
---|
| 137 | IF ( at_i(ji,jj) == 0._wp ) THEN ! what to do if there is no ice |
---|
| 138 | IF ( at_i(ji+1,jj) == 0._wp ) u_ice(ji,jj) = 0._wp ! right side |
---|
| 139 | IF ( at_i(ji-1,jj) == 0._wp ) u_ice(ji-1,jj) = 0._wp ! left side |
---|
| 140 | IF ( at_i(ji,jj+1) == 0._wp ) v_ice(ji,jj) = 0._wp ! upper side |
---|
| 141 | IF ( at_i(ji,jj-1) == 0._wp ) v_ice(ji,jj-1) = 0._wp ! bottom side |
---|
| 142 | ENDIF |
---|
| 143 | END DO |
---|
| 144 | END DO |
---|
| 145 | !lateral boundary conditions |
---|
| 146 | CALL lbc_lnk_multi( u_ice, 'U', -1., v_ice, 'V', -1. ) |
---|
| 147 | !mask velocities |
---|
| 148 | u_ice(:,:) = u_ice(:,:) * umask(:,:,1) |
---|
| 149 | v_ice(:,:) = v_ice(:,:) * vmask(:,:,1) |
---|
| 150 | ENDIF |
---|
| 151 | |
---|
| 152 | ! ------------------------------------------------- |
---|
| 153 | ! Diagnostics |
---|
| 154 | ! ------------------------------------------------- |
---|
| 155 | IF( kn == 1 ) THEN |
---|
| 156 | DO jl = 1, jpl |
---|
| 157 | afx_dyn(:,:) = afx_dyn(:,:) + ( a_i(:,:,jl) - a_i_b(:,:,jl) ) * r1_rdtice |
---|
| 158 | END DO |
---|
| 159 | |
---|
| 160 | DO jj = 1, jpj |
---|
| 161 | DO ji = 1, jpi |
---|
| 162 | ! heat content variation (W.m-2) |
---|
| 163 | diag_heat(ji,jj) = - ( SUM( e_i(ji,jj,1:nlay_i,:) - e_i_b(ji,jj,1:nlay_i,:) ) + & |
---|
| 164 | & SUM( e_s(ji,jj,1:nlay_s,:) - e_s_b(ji,jj,1:nlay_s,:) ) & |
---|
| 165 | & ) * r1_rdtice |
---|
| 166 | ! salt, volume |
---|
| 167 | diag_smvi(ji,jj) = SUM( smv_i(ji,jj,:) - smv_i_b(ji,jj,:) ) * rhoic * r1_rdtice |
---|
| 168 | diag_vice(ji,jj) = SUM( v_i (ji,jj,:) - v_i_b (ji,jj,:) ) * rhoic * r1_rdtice |
---|
| 169 | diag_vsnw(ji,jj) = SUM( v_s (ji,jj,:) - v_s_b (ji,jj,:) ) * rhosn * r1_rdtice |
---|
| 170 | END DO |
---|
| 171 | END DO |
---|
| 172 | |
---|
| 173 | ELSEIF( kn == 2 ) THEN |
---|
| 174 | |
---|
| 175 | DO jl = 1, jpl |
---|
| 176 | oa_i(:,:,jl) = oa_i(:,:,jl) + a_i(:,:,jl) * rdt_ice ! ice natural aging |
---|
| 177 | afx_thd(:,:) = afx_thd(:,:) + ( a_i(:,:,jl) - a_i_b(:,:,jl) ) * r1_rdtice |
---|
| 178 | END DO |
---|
| 179 | afx_tot = afx_thd + afx_dyn |
---|
| 180 | |
---|
| 181 | DO jj = 1, jpj |
---|
| 182 | DO ji = 1, jpi |
---|
| 183 | ! heat content variation (W.m-2) |
---|
| 184 | diag_heat(ji,jj) = diag_heat(ji,jj) - & |
---|
| 185 | & ( SUM( e_i(ji,jj,1:nlay_i,:) - e_i_b(ji,jj,1:nlay_i,:) ) + & |
---|
| 186 | & SUM( e_s(ji,jj,1:nlay_s,:) - e_s_b(ji,jj,1:nlay_s,:) ) & |
---|
| 187 | & ) * r1_rdtice |
---|
| 188 | ! salt, volume |
---|
| 189 | diag_smvi(ji,jj) = diag_smvi(ji,jj) + SUM( smv_i(ji,jj,:) - smv_i_b(ji,jj,:) ) * rhoic * r1_rdtice |
---|
| 190 | diag_vice(ji,jj) = diag_vice(ji,jj) + SUM( v_i (ji,jj,:) - v_i_b (ji,jj,:) ) * rhoic * r1_rdtice |
---|
| 191 | diag_vsnw(ji,jj) = diag_vsnw(ji,jj) + SUM( v_s (ji,jj,:) - v_s_b (ji,jj,:) ) * rhosn * r1_rdtice |
---|
| 192 | END DO |
---|
| 193 | END DO |
---|
| 194 | |
---|
| 195 | ENDIF |
---|
| 196 | |
---|
| 197 | ! conservation test |
---|
| 198 | IF( ln_limdiachk ) CALL ice_cons_hsm(1, 'icecor', zvi_b, zsmv_b, zei_b, zfw_b, zfs_b, zft_b) |
---|
| 199 | |
---|
| 200 | ! control prints |
---|
| 201 | IF( ln_ctl ) CALL ice_prt3D( 'icecor' ) |
---|
| 202 | IF( ln_limctl .AND. kn == 2 ) & |
---|
| 203 | & CALL ice_prt( kt, iiceprt, jiceprt, 2, ' - Final state - ' ) |
---|
| 204 | |
---|
| 205 | IF( nn_timing == 1 ) CALL timing_stop('icecor') |
---|
| 206 | |
---|
| 207 | END SUBROUTINE ice_cor |
---|
| 208 | |
---|
| 209 | #endif |
---|
| 210 | |
---|
| 211 | END MODULE icecor |
---|