Changeset 6416 for trunk/NEMOGCM/NEMO/LIM_SRC_3
- Timestamp:
- 2016-04-01T14:22:17+02:00 (8 years ago)
- Location:
- trunk/NEMOGCM/NEMO/LIM_SRC_3
- Files:
-
- 12 edited
-
ice.F90 (modified) (4 diffs)
-
limcons.F90 (modified) (4 diffs)
-
limdiahsb.F90 (modified) (1 diff)
-
limitd_me.F90 (modified) (22 diffs)
-
limrhg.F90 (modified) (2 diffs)
-
limsbc.F90 (modified) (5 diffs)
-
limthd.F90 (modified) (4 diffs)
-
limthd_dh.F90 (modified) (13 diffs)
-
limthd_lac.F90 (modified) (11 diffs)
-
limvar.F90 (modified) (2 diffs)
-
limwri.F90 (modified) (2 diffs)
-
thd_ice.F90 (modified) (7 diffs)
Legend:
- Unmodified
- Added
- Removed
-
trunk/NEMOGCM/NEMO/LIM_SRC_3/ice.F90
r6403 r6416 253 253 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: fhld !: heat flux from the lead used for bottom melting 254 254 255 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_snw !: snow-ocean mass exchange over 1 time step [kg/m2]256 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_spr !: snow precipitation on ice over 1 time step [kg/m2]257 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sub !: snow sublimation over 1 time step [kg/m2]258 259 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_ice !: ice-ocean mass exchange over 1 time step [kg/m2]260 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sni !: snow ice growth component of wfx_ice [kg/m2]261 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_opw !: lateral ice growth component of wfx_ice [kg/m2]262 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_bog !: bottom ice growth component of wfx_ice [kg/m2]263 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_dyn !: dynamical ice growth component of wfx_ice [kg /m2]264 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_bom !: bottom melt component of wfx_ice [kg/m2]265 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sum !: surface melt component of wfx_ice [kg/m2]266 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_res !: residual component of wfx_ice [kg/m2]267 268 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: afx_tot !: ice concentration tendency (total) [s-1]255 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_snw !: snow-ocean mass exchange [kg.m-2.s-1] 256 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_spr !: snow precipitation on ice [kg.m-2.s-1] 257 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sub !: snow/ice sublimation [kg.m-2.s-1] 258 259 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_ice !: ice-ocean mass exchange [kg.m-2.s-1] 260 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sni !: snow ice growth component of wfx_ice [kg.m-2.s-1] 261 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_opw !: lateral ice growth component of wfx_ice [kg.m-2.s-1] 262 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_bog !: bottom ice growth component of wfx_ice [kg.m-2.s-1] 263 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_dyn !: dynamical ice growth component of wfx_ice [kg.m-2.s-1] 264 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_bom !: bottom melt component of wfx_ice [kg.m-2.s-1] 265 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_sum !: surface melt component of wfx_ice [kg.m-2.s-1] 266 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_res !: residual component of wfx_ice [kg.m-2.s-1] 267 268 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: afx_tot !: ice concentration tendency (total) [s-1] 269 269 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: afx_thd !: ice concentration tendency (thermodynamics) [s-1] 270 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: afx_dyn !: ice concentration tendency (dynamics) [s-1]270 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: afx_dyn !: ice concentration tendency (dynamics) [s-1] 271 271 272 272 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_bog !: salt flux due to ice growth/melt [PSU/m2/s] … … 279 279 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_res !: residual salt flux due to correction of ice thickness [PSU/m2/s] 280 280 281 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_bog !: total heat flux causing bottom ice growth 282 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_bom !: total heat flux causing bottom ice melt 283 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_sum !: total heat flux causing surface ice melt 284 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_opw !: total heat flux causing open water ice formation 285 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_dif !: total heat flux causing Temp change in the ice 286 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_snw !: heat flux for snow melt 287 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_err !: heat flux error after heat diffusion 288 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_err_dif !: heat flux remaining due to change in non-solar flux 289 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_err_rem !: heat flux error after heat remapping 290 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_in !: heat flux available for thermo transformations 291 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_out !: heat flux remaining at the end of thermo transformations 292 281 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sfx_sub !: salt flux due to ice sublimation 282 283 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_bog !: total heat flux causing bottom ice growth [W.m-2] 284 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_bom !: total heat flux causing bottom ice melt [W.m-2] 285 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_sum !: total heat flux causing surface ice melt [W.m-2] 286 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_opw !: total heat flux causing open water ice formation [W.m-2] 287 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_dif !: total heat flux causing Temp change in the ice [W.m-2] 288 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_snw !: heat flux for snow melt [W.m-2] 289 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_err !: heat flux error after heat diffusion [W.m-2] 290 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_err_dif !: heat flux remaining due to change in non-solar flux [W.m-2] 291 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_err_rem !: heat flux error after heat remapping [W.m-2] 292 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_in !: heat flux available for thermo transformations [W.m-2] 293 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_out !: heat flux remaining at the end of thermo transformations [W.m-2] 294 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wfx_err_sub !: mass flux error after sublimation [kg.m-2.s-1] 295 293 296 ! heat flux associated with ice-atmosphere mass exchange 294 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_sub !: heat flux for sublimation 295 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_spr !: heat flux of the snow precipitation 297 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_sub !: heat flux for sublimation [W.m-2] 298 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_spr !: heat flux of the snow precipitation [W.m-2] 296 299 297 300 ! heat flux associated with ice-ocean mass exchange 298 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_thd !: ice-ocean heat flux from thermo processes (limthd_dh) 299 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_dyn !: ice-ocean heat flux from mecanical processes (limitd_me) 300 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_res !: residual heat flux due to correction of ice thickness 301 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_thd !: ice-ocean heat flux from thermo processes (limthd_dh) [W.m-2] 302 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_dyn !: ice-ocean heat flux from mecanical processes (limitd_me) [W.m-2] 303 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: hfx_res !: residual heat flux due to correction of ice thickness [W.m-2] 301 304 302 305 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ftr_ice !: transmitted solar radiation under ice … … 370 373 !!-------------------------------------------------------------------------- 371 374 ! !!: ** Namelist namicerun read in sbc_lim_init ** 372 INTEGER , PUBLIC :: jpl !: number of ice categories373 INTEGER , PUBLIC :: nlay_i !: number of ice layers374 INTEGER , PUBLIC :: nlay_s !: number of snow layers375 CHARACTER(len=32) , PUBLIC :: cn_icerst_in !: suffix of ice restart name (input)375 INTEGER , PUBLIC :: jpl !: number of ice categories 376 INTEGER , PUBLIC :: nlay_i !: number of ice layers 377 INTEGER , PUBLIC :: nlay_s !: number of snow layers 378 CHARACTER(len=32) , PUBLIC :: cn_icerst_in !: suffix of ice restart name (input) 376 379 CHARACTER(len=256), PUBLIC :: cn_icerst_indir !: ice restart input directory 377 CHARACTER(len=32) , PUBLIC :: cn_icerst_out !: suffix of ice restart name (output)380 CHARACTER(len=32) , PUBLIC :: cn_icerst_out !: suffix of ice restart name (output) 378 381 CHARACTER(len=256), PUBLIC :: cn_icerst_outdir!: ice restart output directory 379 LOGICAL , PUBLIC :: ln_limdyn !: flag for ice dynamics (T) or not (F)380 LOGICAL , PUBLIC :: ln_icectl !: flag for sea-ice points output (T) or not (F)381 REAL(wp) , PUBLIC :: rn_amax_n !: maximum ice concentration Northern hemisphere382 REAL(wp) , PUBLIC :: rn_amax_s !: maximum ice concentration Southern hemisphere383 INTEGER , PUBLIC :: iiceprt !: debug i-point384 INTEGER , PUBLIC :: jiceprt !: debug j-point382 LOGICAL , PUBLIC :: ln_limdyn !: flag for ice dynamics (T) or not (F) 383 LOGICAL , PUBLIC :: ln_icectl !: flag for sea-ice points output (T) or not (F) 384 REAL(wp) , PUBLIC :: rn_amax_n !: maximum ice concentration Northern hemisphere 385 REAL(wp) , PUBLIC :: rn_amax_s !: maximum ice concentration Southern hemisphere 386 INTEGER , PUBLIC :: iiceprt !: debug i-point 387 INTEGER , PUBLIC :: jiceprt !: debug j-point 385 388 ! 386 389 !!-------------------------------------------------------------------------- … … 441 444 & fhtur (jpi,jpj) , ftr_ice(jpi,jpj,jpl), qlead (jpi,jpj) , & 442 445 & rn_amax_2d(jpi,jpj), & 443 & sfx_res(jpi,jpj) , sfx_bri(jpi,jpj) , sfx_dyn(jpi,jpj) , &446 & sfx_res(jpi,jpj) , sfx_bri(jpi,jpj) , sfx_dyn(jpi,jpj) , sfx_sub(jpi,jpj) , & 444 447 & sfx_bog(jpi,jpj) , sfx_bom(jpi,jpj) , sfx_sum(jpi,jpj) , sfx_sni(jpi,jpj) , sfx_opw(jpi,jpj) , & 445 448 & hfx_res(jpi,jpj) , hfx_snw(jpi,jpj) , hfx_sub(jpi,jpj) , hfx_err(jpi,jpj) , & 446 & hfx_err_dif(jpi,jpj) , hfx_err_rem(jpi,jpj) , 449 & hfx_err_dif(jpi,jpj) , hfx_err_rem(jpi,jpj) , wfx_err_sub(jpi,jpj) , & 447 450 & hfx_in (jpi,jpj) , hfx_out(jpi,jpj) , fhld(jpi,jpj) , & 448 451 & hfx_sum(jpi,jpj) , hfx_bom(jpi,jpj) , hfx_bog(jpi,jpj) , hfx_dif(jpi,jpj) , hfx_opw(jpi,jpj) , & -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limcons.F90
r6403 r6416 24 24 USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) 25 25 USE sbc_oce , ONLY : sfx ! Surface boundary condition: ocean fields 26 26 USE sbc_ice , ONLY : qevap_ice 27 27 28 IMPLICIT NONE 28 29 PRIVATE … … 184 185 ! salt flux 185 186 zfs_b = glob_sum( ( sfx_bri(:,:) + sfx_bog(:,:) + sfx_bom(:,:) + sfx_sum(:,:) + sfx_sni(:,:) + & 186 & sfx_opw(:,:) + sfx_res(:,:) + sfx_dyn(:,:) 187 & sfx_opw(:,:) + sfx_res(:,:) + sfx_dyn(:,:) + sfx_sub(:,:) & 187 188 & ) * e1e2t(:,:) * tmask(:,:,1) * zconv ) 188 189 … … 209 210 ! salt flux 210 211 zfs = glob_sum( ( sfx_bri(:,:) + sfx_bog(:,:) + sfx_bom(:,:) + sfx_sum(:,:) + sfx_sni(:,:) + & 211 & sfx_opw(:,:) + sfx_res(:,:) + sfx_dyn(:,:) 212 & sfx_opw(:,:) + sfx_res(:,:) + sfx_dyn(:,:) + sfx_sub(:,:) & 212 213 & ) * e1e2t(:,:) * tmask(:,:,1) * zconv ) - zfs_b 213 214 … … 287 288 #if ! defined key_bdy 288 289 ! heat flux 289 zhfx = glob_sum( ( hfx_in - hfx_out - diag_heat - diag_trp_ei - diag_trp_es - hfx_sub ) * e1e2t * tmask(:,:,1) * zconv ) 290 zhfx = glob_sum( ( hfx_in - hfx_out - diag_heat - diag_trp_ei - diag_trp_es - SUM( qevap_ice * a_i_b, dim=3 ) ) & 291 & * e1e2t * tmask(:,:,1) * zconv ) 290 292 ! salt flux 291 293 zsfx = glob_sum( ( sfx + diag_smvi ) * e1e2t * tmask(:,:,1) * zconv ) * rday -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limdiahsb.F90
r5836 r6416 113 113 114 114 ! Heat budget 115 zbg_ihc = glob_sum( et_i(:,:) * e1e2t(:,:) ) * 1.e-20! ice heat content [1.e20 J]116 zbg_shc = glob_sum( et_s(:,:) * e1e2t(:,:) ) * 1.e-20! snow heat content [1.e20 J]115 zbg_ihc = glob_sum( et_i(:,:) * e1e2t(:,:) * 1.e-20 ) ! ice heat content [1.e20 J] 116 zbg_shc = glob_sum( et_s(:,:) * e1e2t(:,:) * 1.e-20 ) ! snow heat content [1.e20 J] 117 117 zbg_hfx_dhc = glob_sum( diag_heat(:,:) * e1e2t(:,:) * tmask(:,:,1) ) ! [in W] 118 118 zbg_hfx_spr = glob_sum( hfx_spr(:,:) * e1e2t(:,:) * tmask(:,:,1) ) ! [in W] -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limitd_me.F90
r5836 r6416 45 45 REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: asum ! sum of total ice and open water area 46 46 REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: aksum ! ratio of area removed to area ridged 47 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: athorn ! participation function; fraction of ridging/ 48 ! ! closing associated w/ category n 47 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: athorn ! participation function; fraction of ridging/closing associated w/ category n 49 48 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: hrmin ! minimum ridge thickness 50 49 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: hrmax ! maximum ridge thickness 51 50 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: hraft ! thickness of rafted ice 52 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: krdg ! mean ridge thickness/thickness of ridging ice51 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: krdg ! thickness of ridging ice / mean ridge thickness 53 52 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: aridge ! participating ice ridging 54 53 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: araft ! participating ice rafting 55 54 56 55 REAL(wp), PARAMETER :: krdgmin = 1.1_wp ! min ridge thickness multiplier 57 REAL(wp), PARAMETER :: kraft = 2.0_wp ! rafting multipliyer 58 REAL(wp), PARAMETER :: kamax = 1.0_wp ! max of ice area authorized (clem: scheme is not stable if kamax <= 0.99) 56 REAL(wp), PARAMETER :: kraft = 0.5_wp ! rafting multipliyer 59 57 60 58 REAL(wp) :: Cp ! 61 59 ! 62 !-----------------------------------------------------------------------63 ! Ridging diagnostic arrays for history files64 !-----------------------------------------------------------------------65 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: dardg1dt ! rate of fractional area loss by ridging ice (1/s)66 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: dardg2dt ! rate of fractional area gain by new ridges (1/s)67 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: dvirdgdt ! rate of ice volume ridged (m/s)68 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: opening ! rate of opening due to divergence/shear (1/s)69 60 ! 70 61 !!---------------------------------------------------------------------- … … 83 74 & asum (jpi,jpj) , athorn(jpi,jpj,0:jpl) , & 84 75 & aksum(jpi,jpj) , & 85 !86 76 & hrmin(jpi,jpj,jpl) , hraft(jpi,jpj,jpl) , aridge(jpi,jpj,jpl) , & 87 & hrmax(jpi,jpj,jpl) , krdg (jpi,jpj,jpl) , araft (jpi,jpj,jpl) , & 88 ! 89 !* Ridging diagnostic arrays for history files 90 & dardg1dt(jpi,jpj) , dardg2dt(jpi,jpj) , & 91 & dvirdgdt(jpi,jpj) , opening(jpi,jpj) , STAT=lim_itd_me_alloc ) 77 & hrmax(jpi,jpj,jpl) , krdg (jpi,jpj,jpl) , araft (jpi,jpj,jpl) , STAT=lim_itd_me_alloc ) 92 78 ! 93 79 IF( lim_itd_me_alloc /= 0 ) CALL ctl_warn( 'lim_itd_me_alloc: failed to allocate arrays' ) … … 132 118 REAL(wp), POINTER, DIMENSION(:,:) :: opning ! rate of opening due to divergence/shear 133 119 REAL(wp), POINTER, DIMENSION(:,:) :: closing_gross ! rate at which area removed, not counting area of new ridges 134 REAL(wp), POINTER, DIMENSION(:,:) :: msnow_mlt ! mass of snow added to ocean (kg m-2)135 REAL(wp), POINTER, DIMENSION(:,:) :: esnow_mlt ! energy needed to melt snow in ocean (J m-2)136 REAL(wp), POINTER, DIMENSION(:,:) :: vt_i_init, vt_i_final ! ice volume summed over categories137 120 ! 138 121 INTEGER, PARAMETER :: nitermax = 20 … … 142 125 IF( nn_timing == 1 ) CALL timing_start('limitd_me') 143 126 144 CALL wrk_alloc( jpi,jpj, closing_net, divu_adv, opning, closing_gross , msnow_mlt, esnow_mlt, vt_i_init, vt_i_final)127 CALL wrk_alloc( jpi,jpj, closing_net, divu_adv, opning, closing_gross ) 145 128 146 129 IF(ln_ctl) THEN … … 154 137 IF( ln_limdiahsb ) CALL lim_cons_hsm(0, 'limitd_me', zvi_b, zsmv_b, zei_b, zfw_b, zfs_b, zft_b) 155 138 156 CALL lim_var_zapsmall157 CALL lim_var_glo2eqv ! equivalent variables, requested for rafting158 159 139 !-----------------------------------------------------------------------------! 160 140 ! 1) Thickness categories boundaries, ice / o.w. concentrations, init_ons … … 164 144 CALL lim_itd_me_ridgeprep ! prepare ridging 165 145 ! 166 IF( con_i) CALL lim_column_sum( jpl, v_i, vt_i_init ) ! conservation check167 146 168 147 DO jj = 1, jpj ! Initialize arrays. 169 148 DO ji = 1, jpi 170 msnow_mlt(ji,jj) = 0._wp171 esnow_mlt(ji,jj) = 0._wp172 dardg1dt (ji,jj) = 0._wp173 dardg2dt (ji,jj) = 0._wp174 dvirdgdt (ji,jj) = 0._wp175 opening (ji,jj) = 0._wp176 149 177 150 !-----------------------------------------------------------------------------! … … 204 177 ! If divu_adv < 0, make sure the closing rate is large enough 205 178 ! to give asum = 1.0 after ridging. 206 207 divu_adv(ji,jj) = ( kamax- asum(ji,jj) ) * r1_rdtice ! asum found in ridgeprep179 180 divu_adv(ji,jj) = ( 1._wp - asum(ji,jj) ) * r1_rdtice ! asum found in ridgeprep 208 181 209 182 IF( divu_adv(ji,jj) < 0._wp ) closing_net(ji,jj) = MAX( closing_net(ji,jj), -divu_adv(ji,jj) ) … … 224 197 DO WHILE ( iterate_ridging > 0 .AND. niter < nitermax ) 225 198 199 ! 3.2 closing_gross 200 !-----------------------------------------------------------------------------! 201 ! Based on the ITD of ridging and ridged ice, convert the net 202 ! closing rate to a gross closing rate. 203 ! NOTE: 0 < aksum <= 1 204 closing_gross(:,:) = closing_net(:,:) / aksum(:,:) 205 206 ! correction to closing rate and opening if closing rate is excessive 207 !--------------------------------------------------------------------- 208 ! Reduce the closing rate if more than 100% of the open water 209 ! would be removed. Reduce the opening rate proportionately. 226 210 DO jj = 1, jpj 227 211 DO ji = 1, jpi 228 229 ! 3.2 closing_gross 230 !-----------------------------------------------------------------------------! 231 ! Based on the ITD of ridging and ridged ice, convert the net 232 ! closing rate to a gross closing rate. 233 ! NOTE: 0 < aksum <= 1 234 closing_gross(ji,jj) = closing_net(ji,jj) / aksum(ji,jj) 235 236 ! correction to closing rate and opening if closing rate is excessive 237 !--------------------------------------------------------------------- 238 ! Reduce the closing rate if more than 100% of the open water 239 ! would be removed. Reduce the opening rate proportionately. 240 za = athorn(ji,jj,0) * closing_gross(ji,jj) * rdt_ice 241 IF( za > epsi20 ) THEN 242 zfac = MIN( 1._wp, ato_i(ji,jj) / za ) 243 closing_gross(ji,jj) = closing_gross(ji,jj) * zfac 244 opning (ji,jj) = opning (ji,jj) * zfac 212 za = ( opning(ji,jj) - athorn(ji,jj,0) * closing_gross(ji,jj) ) * rdt_ice 213 IF( za < 0._wp .AND. za > - ato_i(ji,jj) ) THEN ! would lead to negative ato_i 214 zfac = - ato_i(ji,jj) / za 215 opning(ji,jj) = athorn(ji,jj,0) * closing_gross(ji,jj) - ato_i(ji,jj) * r1_rdtice 216 ELSEIF( za > 0._wp .AND. za > ( asum(ji,jj) - ato_i(ji,jj) ) ) THEN ! would lead to ato_i > asum 217 zfac = ( asum(ji,jj) - ato_i(ji,jj) ) / za 218 opning(ji,jj) = athorn(ji,jj,0) * closing_gross(ji,jj) + ( asum(ji,jj) - ato_i(ji,jj) ) * r1_rdtice 245 219 ENDIF 246 247 220 END DO 248 221 END DO … … 256 229 DO ji = 1, jpi 257 230 za = athorn(ji,jj,jl) * closing_gross(ji,jj) * rdt_ice 258 IF( za > epsi20) THEN259 zfac = MIN( 1._wp, a_i(ji,jj,jl) / za )231 IF( za > a_i(ji,jj,jl) ) THEN 232 zfac = a_i(ji,jj,jl) / za 260 233 closing_gross(ji,jj) = closing_gross(ji,jj) * zfac 261 opning (ji,jj) = opning (ji,jj) * zfac262 234 ENDIF 263 235 END DO … … 268 240 !-----------------------------------------------------------------------------! 269 241 270 CALL lim_itd_me_ridgeshift( opning, closing_gross, msnow_mlt, esnow_mlt ) 271 242 CALL lim_itd_me_ridgeshift( opning, closing_gross ) 243 244 272 245 ! 3.4 Compute total area of ice plus open water after ridging. 273 246 !-----------------------------------------------------------------------------! 274 247 ! This is in general not equal to one because of divergence during transport 275 asum(:,:) = ato_i(:,:) 276 DO jl = 1, jpl 277 asum(:,:) = asum(:,:) + a_i(:,:,jl) 278 END DO 248 asum(:,:) = ato_i(:,:) + SUM( a_i, dim=3 ) 279 249 280 250 ! 3.5 Do we keep on iterating ??? … … 284 254 285 255 iterate_ridging = 0 286 287 256 DO jj = 1, jpj 288 257 DO ji = 1, jpi 289 IF (ABS(asum(ji,jj) - kamax ) < epsi10) THEN258 IF( ABS( asum(ji,jj) - 1._wp ) < epsi10 ) THEN 290 259 closing_net(ji,jj) = 0._wp 291 260 opning (ji,jj) = 0._wp 292 261 ELSE 293 262 iterate_ridging = 1 294 divu_adv (ji,jj) = ( kamax- asum(ji,jj) ) * r1_rdtice263 divu_adv (ji,jj) = ( 1._wp - asum(ji,jj) ) * r1_rdtice 295 264 closing_net(ji,jj) = MAX( 0._wp, -divu_adv(ji,jj) ) 296 265 opning (ji,jj) = MAX( 0._wp, divu_adv(ji,jj) ) … … 309 278 310 279 IF( iterate_ridging == 1 ) THEN 280 CALL lim_itd_me_ridgeprep 311 281 IF( niter > nitermax ) THEN 312 282 WRITE(numout,*) ' ALERTE : non-converging ridging scheme ' 313 283 WRITE(numout,*) ' niter, iterate_ridging ', niter, iterate_ridging 314 284 ENDIF 315 CALL lim_itd_me_ridgeprep316 285 ENDIF 317 286 318 287 END DO !! on the do while over iter 319 320 !-----------------------------------------------------------------------------!321 ! 4) Ridging diagnostics322 !-----------------------------------------------------------------------------!323 ! Convert ridging rate diagnostics to correct units.324 ! Update fresh water and heat fluxes due to snow melt.325 DO jj = 1, jpj326 DO ji = 1, jpi327 328 dardg1dt(ji,jj) = dardg1dt(ji,jj) * r1_rdtice329 dardg2dt(ji,jj) = dardg2dt(ji,jj) * r1_rdtice330 dvirdgdt(ji,jj) = dvirdgdt(ji,jj) * r1_rdtice331 opening (ji,jj) = opening (ji,jj) * r1_rdtice332 333 !-----------------------------------------------------------------------------!334 ! 5) Heat, salt and freshwater fluxes335 !-----------------------------------------------------------------------------!336 wfx_snw(ji,jj) = wfx_snw(ji,jj) + msnow_mlt(ji,jj) * r1_rdtice ! fresh water source for ocean337 hfx_dyn(ji,jj) = hfx_dyn(ji,jj) + esnow_mlt(ji,jj) * r1_rdtice ! heat sink for ocean (<0, W.m-2)338 339 END DO340 END DO341 342 ! Check if there is a ridging error343 IF( lwp ) THEN344 DO jj = 1, jpj345 DO ji = 1, jpi346 IF( ABS( asum(ji,jj) - kamax) > epsi10 ) THEN ! there is a bug347 WRITE(numout,*) ' '348 WRITE(numout,*) ' ALERTE : Ridging error: total area = ', asum(ji,jj)349 WRITE(numout,*) ' limitd_me '350 WRITE(numout,*) ' POINT : ', ji, jj351 WRITE(numout,*) ' jpl, a_i, athorn '352 WRITE(numout,*) 0, ato_i(ji,jj), athorn(ji,jj,0)353 DO jl = 1, jpl354 WRITE(numout,*) jl, a_i(ji,jj,jl), athorn(ji,jj,jl)355 END DO356 ENDIF357 END DO358 END DO359 END IF360 361 ! Conservation check362 IF ( con_i ) THEN363 CALL lim_column_sum (jpl, v_i, vt_i_final)364 fieldid = ' v_i : limitd_me '365 CALL lim_cons_check (vt_i_init, vt_i_final, 1.0e-6, fieldid)366 ENDIF367 288 368 289 CALL lim_var_agg( 1 ) … … 377 298 CALL prt_ctl_info(' - Cell values : ') 378 299 CALL prt_ctl_info(' ~~~~~~~~~~~~~ ') 379 CALL prt_ctl(tab2d_1=e1e2t , clinfo1=' lim_itd_me : cell area :')300 CALL prt_ctl(tab2d_1=e1e2t , clinfo1=' lim_itd_me : cell area :') 380 301 CALL prt_ctl(tab2d_1=at_i , clinfo1=' lim_itd_me : at_i :') 381 302 CALL prt_ctl(tab2d_1=vt_i , clinfo1=' lim_itd_me : vt_i :') … … 410 331 ENDIF ! ln_limdyn=.true. 411 332 ! 412 CALL wrk_dealloc( jpi, jpj, closing_net, divu_adv, opning, closing_gross , msnow_mlt, esnow_mlt, vt_i_init, vt_i_final)333 CALL wrk_dealloc( jpi, jpj, closing_net, divu_adv, opning, closing_gross ) 413 334 ! 414 335 IF( nn_timing == 1 ) CALL timing_stop('limitd_me') 415 336 END SUBROUTINE lim_itd_me 416 337 338 SUBROUTINE lim_itd_me_ridgeprep 339 !!---------------------------------------------------------------------! 340 !! *** ROUTINE lim_itd_me_ridgeprep *** 341 !! 342 !! ** Purpose : preparation for ridging and strength calculations 343 !! 344 !! ** Method : Compute the thickness distribution of the ice and open water 345 !! participating in ridging and of the resulting ridges. 346 !!---------------------------------------------------------------------! 347 INTEGER :: ji,jj, jl ! dummy loop indices 348 REAL(wp) :: Gstari, astari, hrmean, zdummy ! local scalar 349 REAL(wp), POINTER, DIMENSION(:,:,:) :: Gsum ! Gsum(n) = sum of areas in categories 0 to n 350 !------------------------------------------------------------------------------! 351 352 CALL wrk_alloc( jpi,jpj,jpl+2, Gsum, kkstart = -1 ) 353 354 Gstari = 1.0/rn_gstar 355 astari = 1.0/rn_astar 356 aksum(:,:) = 0.0 357 athorn(:,:,:) = 0.0 358 aridge(:,:,:) = 0.0 359 araft (:,:,:) = 0.0 360 361 ! Zero out categories with very small areas 362 CALL lim_var_zapsmall 363 364 ! Ice thickness needed for rafting 365 DO jl = 1, jpl 366 DO jj = 1, jpj 367 DO ji = 1, jpi 368 rswitch = MAX( 0._wp , SIGN( 1._wp, a_i(ji,jj,jl) - epsi20 ) ) 369 ht_i(ji,jj,jl) = v_i (ji,jj,jl) / MAX( a_i(ji,jj,jl) , epsi20 ) * rswitch 370 END DO 371 END DO 372 END DO 373 374 !------------------------------------------------------------------------------! 375 ! 1) Participation function 376 !------------------------------------------------------------------------------! 377 378 ! Compute total area of ice plus open water. 379 ! This is in general not equal to one because of divergence during transport 380 asum(:,:) = ato_i(:,:) + SUM( a_i, dim=3 ) 381 382 ! Compute cumulative thickness distribution function 383 ! Compute the cumulative thickness distribution function Gsum, 384 ! where Gsum(n) is the fractional area in categories 0 to n. 385 ! initial value (in h = 0) equals open water area 386 Gsum(:,:,-1) = 0._wp 387 Gsum(:,:,0 ) = ato_i(:,:) 388 ! for each value of h, you have to add ice concentration then 389 DO jl = 1, jpl 390 Gsum(:,:,jl) = Gsum(:,:,jl-1) + a_i(:,:,jl) 391 END DO 392 393 ! Normalize the cumulative distribution to 1 394 DO jl = 0, jpl 395 Gsum(:,:,jl) = Gsum(:,:,jl) / asum(:,:) 396 END DO 397 398 ! 1.3 Compute participation function a(h) = b(h).g(h) (athorn) 399 !-------------------------------------------------------------------------------------------------- 400 ! Compute the participation function athorn; this is analogous to 401 ! a(h) = b(h)g(h) as defined in Thorndike et al. (1975). 402 ! area lost from category n due to ridging/closing 403 ! athorn(n) = total area lost due to ridging/closing 404 ! assume b(h) = (2/Gstar) * (1 - G(h)/Gstar). 405 ! 406 ! The expressions for athorn are found by integrating b(h)g(h) between 407 ! the category boundaries. 408 ! athorn is always >= 0 and SUM(athorn(0:jpl))=1 409 !----------------------------------------------------------------- 410 411 IF( nn_partfun == 0 ) THEN !--- Linear formulation (Thorndike et al., 1975) 412 DO jl = 0, jpl 413 DO jj = 1, jpj 414 DO ji = 1, jpi 415 IF ( Gsum(ji,jj,jl) < rn_gstar ) THEN 416 athorn(ji,jj,jl) = Gstari * ( Gsum(ji,jj,jl) - Gsum(ji,jj,jl-1) ) * & 417 & ( 2._wp - ( Gsum(ji,jj,jl-1) + Gsum(ji,jj,jl) ) * Gstari ) 418 ELSEIF( Gsum(ji,jj,jl-1) < rn_gstar ) THEN 419 athorn(ji,jj,jl) = Gstari * ( rn_gstar - Gsum(ji,jj,jl-1) ) * & 420 & ( 2._wp - ( Gsum(ji,jj,jl-1) + rn_gstar ) * Gstari ) 421 ELSE 422 athorn(ji,jj,jl) = 0._wp 423 ENDIF 424 END DO 425 END DO 426 END DO 427 428 ELSE !--- Exponential, more stable formulation (Lipscomb et al, 2007) 429 ! 430 zdummy = 1._wp / ( 1._wp - EXP(-astari) ) ! precompute exponential terms using Gsum as a work array 431 DO jl = -1, jpl 432 Gsum(:,:,jl) = EXP( -Gsum(:,:,jl) * astari ) * zdummy 433 END DO 434 DO jl = 0, jpl 435 athorn(:,:,jl) = Gsum(:,:,jl-1) - Gsum(:,:,jl) 436 END DO 437 ! 438 ENDIF 439 440 IF( ln_rafting ) THEN ! Ridging and rafting ice participation functions 441 ! 442 DO jl = 1, jpl 443 DO jj = 1, jpj 444 DO ji = 1, jpi 445 zdummy = TANH ( rn_craft * ( ht_i(ji,jj,jl) - rn_hraft ) ) 446 aridge(ji,jj,jl) = ( 1._wp + zdummy ) * 0.5_wp * athorn(ji,jj,jl) 447 araft (ji,jj,jl) = ( 1._wp - zdummy ) * 0.5_wp * athorn(ji,jj,jl) 448 END DO 449 END DO 450 END DO 451 452 ELSE 453 ! 454 DO jl = 1, jpl 455 aridge(:,:,jl) = athorn(:,:,jl) 456 END DO 457 ! 458 ENDIF 459 460 !----------------------------------------------------------------- 461 ! 2) Transfer function 462 !----------------------------------------------------------------- 463 ! Compute max and min ridged ice thickness for each ridging category. 464 ! Assume ridged ice is uniformly distributed between hrmin and hrmax. 465 ! 466 ! This parameterization is a modified version of Hibler (1980). 467 ! The mean ridging thickness, hrmean, is proportional to hi^(0.5) 468 ! and for very thick ridging ice must be >= krdgmin*hi 469 ! 470 ! The minimum ridging thickness, hrmin, is equal to 2*hi 471 ! (i.e., rafting) and for very thick ridging ice is 472 ! constrained by hrmin <= (hrmean + hi)/2. 473 ! 474 ! The maximum ridging thickness, hrmax, is determined by 475 ! hrmean and hrmin. 476 ! 477 ! These modifications have the effect of reducing the ice strength 478 ! (relative to the Hibler formulation) when very thick ice is 479 ! ridging. 480 ! 481 ! aksum = net area removed/ total area removed 482 ! where total area removed = area of ice that ridges 483 ! net area removed = total area removed - area of new ridges 484 !----------------------------------------------------------------- 485 486 aksum(:,:) = athorn(:,:,0) 487 ! Transfer function 488 DO jl = 1, jpl !all categories have a specific transfer function 489 DO jj = 1, jpj 490 DO ji = 1, jpi 491 492 IF( athorn(ji,jj,jl) > 0._wp ) THEN 493 hrmean = MAX( SQRT( rn_hstar * ht_i(ji,jj,jl) ), ht_i(ji,jj,jl) * krdgmin ) 494 hrmin(ji,jj,jl) = MIN( 2._wp * ht_i(ji,jj,jl), 0.5_wp * ( hrmean + ht_i(ji,jj,jl) ) ) 495 hrmax(ji,jj,jl) = 2._wp * hrmean - hrmin(ji,jj,jl) 496 hraft(ji,jj,jl) = ht_i(ji,jj,jl) / kraft 497 krdg(ji,jj,jl) = ht_i(ji,jj,jl) / MAX( hrmean, epsi20 ) 498 499 ! Normalization factor : aksum, ensures mass conservation 500 aksum(ji,jj) = aksum(ji,jj) + aridge(ji,jj,jl) * ( 1._wp - krdg(ji,jj,jl) ) & 501 & + araft (ji,jj,jl) * ( 1._wp - kraft ) 502 503 ELSE 504 hrmin(ji,jj,jl) = 0._wp 505 hrmax(ji,jj,jl) = 0._wp 506 hraft(ji,jj,jl) = 0._wp 507 krdg (ji,jj,jl) = 1._wp 508 ENDIF 509 510 END DO 511 END DO 512 END DO 513 ! 514 CALL wrk_dealloc( jpi,jpj,jpl+2, Gsum, kkstart = -1 ) 515 ! 516 END SUBROUTINE lim_itd_me_ridgeprep 517 518 519 SUBROUTINE lim_itd_me_ridgeshift( opning, closing_gross ) 520 !!---------------------------------------------------------------------- 521 !! *** ROUTINE lim_itd_me_icestrength *** 522 !! 523 !! ** Purpose : shift ridging ice among thickness categories of ice thickness 524 !! 525 !! ** Method : Remove area, volume, and energy from each ridging category 526 !! and add to thicker ice categories. 527 !!---------------------------------------------------------------------- 528 REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: opning ! rate of opening due to divergence/shear 529 REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: closing_gross ! rate at which area removed, excluding area of new ridges 530 ! 531 CHARACTER (len=80) :: fieldid ! field identifier 532 ! 533 INTEGER :: ji, jj, jl, jl1, jl2, jk ! dummy loop indices 534 INTEGER :: ij ! horizontal index, combines i and j loops 535 INTEGER :: icells ! number of cells with a_i > puny 536 REAL(wp) :: hL, hR, farea ! left and right limits of integration 537 538 INTEGER , POINTER, DIMENSION(:) :: indxi, indxj ! compressed indices 539 REAL(wp), POINTER, DIMENSION(:) :: zswitch, fvol ! new ridge volume going to n2 540 541 REAL(wp), POINTER, DIMENSION(:) :: afrac ! fraction of category area ridged 542 REAL(wp), POINTER, DIMENSION(:) :: ardg1 , ardg2 ! area of ice ridged & new ridges 543 REAL(wp), POINTER, DIMENSION(:) :: vsrdg , esrdg ! snow volume & energy of ridging ice 544 REAL(wp), POINTER, DIMENSION(:) :: dhr , dhr2 ! hrmax - hrmin & hrmax^2 - hrmin^2 545 546 REAL(wp), POINTER, DIMENSION(:) :: vrdg1 ! volume of ice ridged 547 REAL(wp), POINTER, DIMENSION(:) :: vrdg2 ! volume of new ridges 548 REAL(wp), POINTER, DIMENSION(:) :: vsw ! volume of seawater trapped into ridges 549 REAL(wp), POINTER, DIMENSION(:) :: srdg1 ! sal*volume of ice ridged 550 REAL(wp), POINTER, DIMENSION(:) :: srdg2 ! sal*volume of new ridges 551 REAL(wp), POINTER, DIMENSION(:) :: smsw ! sal*volume of water trapped into ridges 552 REAL(wp), POINTER, DIMENSION(:) :: oirdg1, oirdg2 ! ice age of ice ridged 553 554 REAL(wp), POINTER, DIMENSION(:) :: afrft ! fraction of category area rafted 555 REAL(wp), POINTER, DIMENSION(:) :: arft1 , arft2 ! area of ice rafted and new rafted zone 556 REAL(wp), POINTER, DIMENSION(:) :: virft , vsrft ! ice & snow volume of rafting ice 557 REAL(wp), POINTER, DIMENSION(:) :: esrft , smrft ! snow energy & salinity of rafting ice 558 REAL(wp), POINTER, DIMENSION(:) :: oirft1, oirft2 ! ice age of ice rafted 559 560 REAL(wp), POINTER, DIMENSION(:,:) :: eirft ! ice energy of rafting ice 561 REAL(wp), POINTER, DIMENSION(:,:) :: erdg1 ! enth*volume of ice ridged 562 REAL(wp), POINTER, DIMENSION(:,:) :: erdg2 ! enth*volume of new ridges 563 REAL(wp), POINTER, DIMENSION(:,:) :: ersw ! enth of water trapped into ridges 564 !!---------------------------------------------------------------------- 565 566 CALL wrk_alloc( jpij, indxi, indxj ) 567 CALL wrk_alloc( jpij, zswitch, fvol ) 568 CALL wrk_alloc( jpij, afrac, ardg1, ardg2, vsrdg, esrdg, dhr, dhr2 ) 569 CALL wrk_alloc( jpij, vrdg1, vrdg2, vsw , srdg1, srdg2, smsw, oirdg1, oirdg2 ) 570 CALL wrk_alloc( jpij, afrft, arft1, arft2, virft, vsrft, esrft, smrft, oirft1, oirft2 ) 571 CALL wrk_alloc( jpij,nlay_i, eirft, erdg1, erdg2, ersw ) 572 573 !------------------------------------------------------------------------------- 574 ! 1) Compute change in open water area due to closing and opening. 575 !------------------------------------------------------------------------------- 576 DO jj = 1, jpj 577 DO ji = 1, jpi 578 ato_i(ji,jj) = MAX( 0._wp, ato_i(ji,jj) + & 579 & ( opning(ji,jj) - athorn(ji,jj,0) * closing_gross(ji,jj) ) * rdt_ice ) 580 END DO 581 END DO 582 583 !----------------------------------------------------------------- 584 ! 3) Pump everything from ice which is being ridged / rafted 585 !----------------------------------------------------------------- 586 ! Compute the area, volume, and energy of ice ridging in each 587 ! category, along with the area of the resulting ridge. 588 589 DO jl1 = 1, jpl !jl1 describes the ridging category 590 591 !------------------------------------------------ 592 ! 3.1) Identify grid cells with nonzero ridging 593 !------------------------------------------------ 594 icells = 0 595 DO jj = 1, jpj 596 DO ji = 1, jpi 597 IF( athorn(ji,jj,jl1) > 0._wp .AND. closing_gross(ji,jj) > 0._wp ) THEN 598 icells = icells + 1 599 indxi(icells) = ji 600 indxj(icells) = jj 601 ENDIF 602 END DO 603 END DO 604 605 DO ij = 1, icells 606 ji = indxi(ij) ; jj = indxj(ij) 607 608 !-------------------------------------------------------------------- 609 ! 3.2) Compute area of ridging ice (ardg1) and of new ridge (ardg2) 610 !-------------------------------------------------------------------- 611 ardg1(ij) = aridge(ji,jj,jl1) * closing_gross(ji,jj) * rdt_ice 612 arft1(ij) = araft (ji,jj,jl1) * closing_gross(ji,jj) * rdt_ice 613 614 !--------------------------------------------------------------- 615 ! 3.3) Compute ridging /rafting fractions, make sure afrac <=1 616 !--------------------------------------------------------------- 617 afrac(ij) = ardg1(ij) / a_i(ji,jj,jl1) !ridging 618 afrft(ij) = arft1(ij) / a_i(ji,jj,jl1) !rafting 619 ardg2(ij) = ardg1(ij) * krdg(ji,jj,jl1) 620 arft2(ij) = arft1(ij) * kraft 621 622 !-------------------------------------------------------------------------- 623 ! 3.4) Subtract area, volume, and energy from ridging 624 ! / rafting category n1. 625 !-------------------------------------------------------------------------- 626 vrdg1(ij) = v_i(ji,jj,jl1) * afrac(ij) 627 vrdg2(ij) = vrdg1(ij) * ( 1. + rn_por_rdg ) 628 vsw (ij) = vrdg1(ij) * rn_por_rdg 629 630 vsrdg (ij) = v_s (ji,jj, jl1) * afrac(ij) 631 esrdg (ij) = e_s (ji,jj,1,jl1) * afrac(ij) 632 srdg1 (ij) = smv_i(ji,jj, jl1) * afrac(ij) 633 oirdg1(ij) = oa_i (ji,jj, jl1) * afrac(ij) 634 oirdg2(ij) = oa_i (ji,jj, jl1) * afrac(ij) * krdg(ji,jj,jl1) 635 636 ! rafting volumes, heat contents ... 637 virft (ij) = v_i (ji,jj, jl1) * afrft(ij) 638 vsrft (ij) = v_s (ji,jj, jl1) * afrft(ij) 639 esrft (ij) = e_s (ji,jj,1,jl1) * afrft(ij) 640 smrft (ij) = smv_i(ji,jj, jl1) * afrft(ij) 641 oirft1(ij) = oa_i (ji,jj, jl1) * afrft(ij) 642 oirft2(ij) = oa_i (ji,jj, jl1) * afrft(ij) * kraft 643 644 !----------------------------------------------------------------- 645 ! 3.5) Compute properties of new ridges 646 !----------------------------------------------------------------- 647 smsw(ij) = vsw(ij) * sss_m(ji,jj) ! salt content of seawater frozen in voids 648 srdg2(ij) = srdg1(ij) + smsw(ij) ! salt content of new ridge 649 650 sfx_dyn(ji,jj) = sfx_dyn(ji,jj) - smsw(ij) * rhoic * r1_rdtice 651 wfx_dyn(ji,jj) = wfx_dyn(ji,jj) - vsw (ij) * rhoic * r1_rdtice ! increase in ice volume due to seawater frozen in voids 652 653 !------------------------------------------ 654 ! 3.7 Put the snow somewhere in the ocean 655 !------------------------------------------ 656 ! Place part of the snow lost by ridging into the ocean. 657 ! Note that esrdg > 0; the ocean must cool to melt snow. 658 ! If the ocean temp = Tf already, new ice must grow. 659 ! During the next time step, thermo_rates will determine whether 660 ! the ocean cools or new ice grows. 661 wfx_snw(ji,jj) = wfx_snw(ji,jj) + ( rhosn * vsrdg(ij) * ( 1._wp - rn_fsnowrdg ) & 662 & + rhosn * vsrft(ij) * ( 1._wp - rn_fsnowrft ) ) * r1_rdtice ! fresh water source for ocean 663 664 hfx_dyn(ji,jj) = hfx_dyn(ji,jj) + ( - esrdg(ij) * ( 1._wp - rn_fsnowrdg ) & 665 & - esrft(ij) * ( 1._wp - rn_fsnowrft ) ) * r1_rdtice ! heat sink for ocean (<0, W.m-2) 666 667 !----------------------------------------------------------------- 668 ! 3.8 Compute quantities used to apportion ice among categories 669 ! in the n2 loop below 670 !----------------------------------------------------------------- 671 dhr (ij) = 1._wp / ( hrmax(ji,jj,jl1) - hrmin(ji,jj,jl1) ) 672 dhr2(ij) = 1._wp / ( hrmax(ji,jj,jl1) * hrmax(ji,jj,jl1) - hrmin(ji,jj,jl1) * hrmin(ji,jj,jl1) ) 673 674 675 ! update jl1 (removing ridged/rafted area) 676 a_i (ji,jj, jl1) = a_i (ji,jj, jl1) - ardg1 (ij) - arft1 (ij) 677 v_i (ji,jj, jl1) = v_i (ji,jj, jl1) - vrdg1 (ij) - virft (ij) 678 v_s (ji,jj, jl1) = v_s (ji,jj, jl1) - vsrdg (ij) - vsrft (ij) 679 e_s (ji,jj,1,jl1) = e_s (ji,jj,1,jl1) - esrdg (ij) - esrft (ij) 680 smv_i(ji,jj, jl1) = smv_i(ji,jj, jl1) - srdg1 (ij) - smrft (ij) 681 oa_i (ji,jj, jl1) = oa_i (ji,jj, jl1) - oirdg1(ij) - oirft1(ij) 682 683 END DO 684 685 !-------------------------------------------------------------------- 686 ! 3.9 Compute ridging ice enthalpy, remove it from ridging ice and 687 ! compute ridged ice enthalpy 688 !-------------------------------------------------------------------- 689 DO jk = 1, nlay_i 690 DO ij = 1, icells 691 ji = indxi(ij) ; jj = indxj(ij) 692 ! heat content of ridged ice 693 erdg1(ij,jk) = e_i(ji,jj,jk,jl1) * afrac(ij) 694 eirft(ij,jk) = e_i(ji,jj,jk,jl1) * afrft(ij) 695 696 ! enthalpy of the trapped seawater (J/m2, >0) 697 ! clem: if sst>0, then ersw <0 (is that possible?) 698 ersw(ij,jk) = - rhoic * vsw(ij) * rcp * sst_m(ji,jj) * r1_nlay_i 699 700 ! heat flux to the ocean 701 hfx_dyn(ji,jj) = hfx_dyn(ji,jj) + ersw(ij,jk) * r1_rdtice ! > 0 [W.m-2] ocean->ice flux 702 703 ! it is added to sea ice because the sign convention is the opposite of the sign convention for the ocean 704 erdg2(ij,jk) = erdg1(ij,jk) + ersw(ij,jk) 705 706 ! update jl1 707 e_i (ji,jj,jk,jl1) = e_i(ji,jj,jk,jl1) - erdg1(ij,jk) - eirft(ij,jk) 708 709 END DO 710 END DO 711 712 !------------------------------------------------------------------------------- 713 ! 4) Add area, volume, and energy of new ridge to each category jl2 714 !------------------------------------------------------------------------------- 715 DO jl2 = 1, jpl 716 ! over categories to which ridged/rafted ice is transferred 717 DO ij = 1, icells 718 ji = indxi(ij) ; jj = indxj(ij) 719 720 ! Compute the fraction of ridged ice area and volume going to thickness category jl2. 721 IF( hrmin(ji,jj,jl1) <= hi_max(jl2) .AND. hrmax(ji,jj,jl1) > hi_max(jl2-1) ) THEN 722 hL = MAX( hrmin(ji,jj,jl1), hi_max(jl2-1) ) 723 hR = MIN( hrmax(ji,jj,jl1), hi_max(jl2) ) 724 farea = ( hR - hL ) * dhr(ij) 725 fvol(ij) = ( hR * hR - hL * hL ) * dhr2(ij) 726 ELSE 727 farea = 0._wp 728 fvol(ij) = 0._wp 729 ENDIF 730 731 ! Compute the fraction of rafted ice area and volume going to thickness category jl2 732 IF( hraft(ji,jj,jl1) <= hi_max(jl2) .AND. hraft(ji,jj,jl1) > hi_max(jl2-1) ) THEN 733 zswitch(ij) = 1._wp 734 ELSE 735 zswitch(ij) = 0._wp 736 ENDIF 737 738 a_i (ji,jj ,jl2) = a_i (ji,jj ,jl2) + ( ardg2 (ij) * farea + arft2 (ij) * zswitch(ij) ) 739 oa_i (ji,jj ,jl2) = oa_i (ji,jj ,jl2) + ( oirdg2(ij) * farea + oirft2(ij) * zswitch(ij) ) 740 v_i (ji,jj ,jl2) = v_i (ji,jj ,jl2) + ( vrdg2 (ij) * fvol(ij) + virft (ij) * zswitch(ij) ) 741 smv_i(ji,jj ,jl2) = smv_i(ji,jj ,jl2) + ( srdg2 (ij) * fvol(ij) + smrft (ij) * zswitch(ij) ) 742 v_s (ji,jj ,jl2) = v_s (ji,jj ,jl2) + ( vsrdg (ij) * rn_fsnowrdg * fvol(ij) + & 743 & vsrft (ij) * rn_fsnowrft * zswitch(ij) ) 744 e_s (ji,jj,1,jl2) = e_s (ji,jj,1,jl2) + ( esrdg (ij) * rn_fsnowrdg * fvol(ij) + & 745 & esrft (ij) * rn_fsnowrft * zswitch(ij) ) 746 747 END DO 748 749 ! Transfer ice energy to category jl2 by ridging 750 DO jk = 1, nlay_i 751 DO ij = 1, icells 752 ji = indxi(ij) ; jj = indxj(ij) 753 e_i(ji,jj,jk,jl2) = e_i(ji,jj,jk,jl2) + erdg2(ij,jk) * fvol(ij) + eirft(ij,jk) * zswitch(ij) 754 END DO 755 END DO 756 ! 757 END DO ! jl2 758 759 END DO ! jl1 (deforming categories) 760 761 ! 762 CALL wrk_dealloc( jpij, indxi, indxj ) 763 CALL wrk_dealloc( jpij, zswitch, fvol ) 764 CALL wrk_dealloc( jpij, afrac, ardg1, ardg2, vsrdg, esrdg, dhr, dhr2 ) 765 CALL wrk_dealloc( jpij, vrdg1, vrdg2, vsw , srdg1, srdg2, smsw, oirdg1, oirdg2 ) 766 CALL wrk_dealloc( jpij, afrft, arft1, arft2, virft, vsrft, esrft, smrft, oirft1, oirft2 ) 767 CALL wrk_dealloc( jpij,nlay_i, eirft, erdg1, erdg2, ersw ) 768 ! 769 END SUBROUTINE lim_itd_me_ridgeshift 417 770 418 771 SUBROUTINE lim_itd_me_icestrength( kstrngth ) … … 434 787 INTEGER :: ksmooth ! smoothing the resistance to deformation 435 788 INTEGER :: numts_rm ! number of time steps for the P smoothing 436 REAL(wp) :: z hi, zp, z1_3! local scalars789 REAL(wp) :: zp, z1_3 ! local scalars 437 790 REAL(wp), POINTER, DIMENSION(:,:) :: zworka ! temporary array used here 438 791 !!---------------------------------------------------------------------- … … 459 812 DO ji = 1, jpi 460 813 ! 461 IF( a_i(ji,jj,jl) > epsi10 .AND. athorn(ji,jj,jl) > 0._wp ) THEN 462 zhi = v_i(ji,jj,jl) / a_i(ji,jj,jl) 814 IF( athorn(ji,jj,jl) > 0._wp ) THEN 463 815 !---------------------------- 464 816 ! PE loss from deforming ice 465 817 !---------------------------- 466 strength(ji,jj) = strength(ji,jj) - athorn(ji,jj,jl) * zhi * zhi818 strength(ji,jj) = strength(ji,jj) - athorn(ji,jj,jl) * ht_i(ji,jj,jl) * ht_i(ji,jj,jl) 467 819 468 820 !-------------------------- 469 821 ! PE gain from rafting ice 470 822 !-------------------------- 471 strength(ji,jj) = strength(ji,jj) + 2._wp * araft(ji,jj,jl) * zhi * zhi823 strength(ji,jj) = strength(ji,jj) + 2._wp * araft(ji,jj,jl) * ht_i(ji,jj,jl) * ht_i(ji,jj,jl) 472 824 473 825 !---------------------------- 474 826 ! PE gain from ridging ice 475 827 !---------------------------- 476 strength(ji,jj) = strength(ji,jj) + aridge(ji,jj,jl) / krdg(ji,jj,jl) & 477 * z1_3 * ( hrmax(ji,jj,jl)**2 + hrmin(ji,jj,jl)**2 + hrmax(ji,jj,jl) * hrmin(ji,jj,jl) ) 828 strength(ji,jj) = strength(ji,jj) + aridge(ji,jj,jl) * krdg(ji,jj,jl) * z1_3 * & 829 & ( hrmax(ji,jj,jl) * hrmax(ji,jj,jl) + & 830 & hrmin(ji,jj,jl) * hrmin(ji,jj,jl) + & 831 & hrmax(ji,jj,jl) * hrmin(ji,jj,jl) ) 478 832 !!(a**3-b**3)/(a-b) = a*a+ab+b*b 479 833 ENDIF … … 497 851 ! 498 852 ENDIF ! kstrngth 499 500 853 ! 501 854 !------------------------------------------------------------------------------! … … 503 856 !------------------------------------------------------------------------------! 504 857 ! CAN BE REMOVED 505 !506 858 IF( ln_icestr_bvf ) THEN 507 508 859 DO jj = 1, jpj 509 860 DO ji = 1, jpi … … 511 862 END DO 512 863 END DO 513 514 864 ENDIF 515 516 865 ! 517 866 !------------------------------------------------------------------------------! … … 558 907 IF ( ksmooth == 2 ) THEN 559 908 560 561 909 CALL lbc_lnk( strength, 'T', 1. ) 562 910 … … 565 913 IF ( ( asum(ji,jj) - ato_i(ji,jj) ) > 0._wp) THEN 566 914 numts_rm = 1 ! number of time steps for the running mean 567 IF ( strp1(ji,jj) > 0. 0) numts_rm = numts_rm + 1568 IF ( strp2(ji,jj) > 0. 0) numts_rm = numts_rm + 1915 IF ( strp1(ji,jj) > 0._wp ) numts_rm = numts_rm + 1 916 IF ( strp2(ji,jj) > 0._wp ) numts_rm = numts_rm + 1 569 917 zp = ( strength(ji,jj) + strp1(ji,jj) + strp2(ji,jj) ) / numts_rm 570 918 strp2(ji,jj) = strp1(ji,jj) … … 583 931 ! 584 932 END SUBROUTINE lim_itd_me_icestrength 585 586 587 SUBROUTINE lim_itd_me_ridgeprep588 !!---------------------------------------------------------------------!589 !! *** ROUTINE lim_itd_me_ridgeprep ***590 !!591 !! ** Purpose : preparation for ridging and strength calculations592 !!593 !! ** Method : Compute the thickness distribution of the ice and open water594 !! participating in ridging and of the resulting ridges.595 !!---------------------------------------------------------------------!596 INTEGER :: ji,jj, jl ! dummy loop indices597 REAL(wp) :: Gstari, astari, zhi, hrmean, zdummy ! local scalar598 REAL(wp), POINTER, DIMENSION(:,:) :: zworka ! temporary array used here599 REAL(wp), POINTER, DIMENSION(:,:,:) :: Gsum ! Gsum(n) = sum of areas in categories 0 to n600 !------------------------------------------------------------------------------!601 602 CALL wrk_alloc( jpi,jpj, zworka )603 CALL wrk_alloc( jpi,jpj,jpl+2, Gsum, kkstart = -1 )604 605 Gstari = 1.0/rn_gstar606 astari = 1.0/rn_astar607 aksum(:,:) = 0.0608 athorn(:,:,:) = 0.0609 aridge(:,:,:) = 0.0610 araft (:,:,:) = 0.0611 hrmin(:,:,:) = 0.0612 hrmax(:,:,:) = 0.0613 hraft(:,:,:) = 0.0614 krdg (:,:,:) = 1.0615 616 ! ! Zero out categories with very small areas617 CALL lim_var_zapsmall618 619 !------------------------------------------------------------------------------!620 ! 1) Participation function621 !------------------------------------------------------------------------------!622 623 ! Compute total area of ice plus open water.624 ! This is in general not equal to one because of divergence during transport625 asum(:,:) = ato_i(:,:)626 DO jl = 1, jpl627 asum(:,:) = asum(:,:) + a_i(:,:,jl)628 END DO629 630 ! Compute cumulative thickness distribution function631 ! Compute the cumulative thickness distribution function Gsum,632 ! where Gsum(n) is the fractional area in categories 0 to n.633 ! initial value (in h = 0) equals open water area634 635 Gsum(:,:,-1) = 0._wp636 Gsum(:,:,0 ) = ato_i(:,:)637 638 ! for each value of h, you have to add ice concentration then639 DO jl = 1, jpl640 Gsum(:,:,jl) = Gsum(:,:,jl-1) + a_i(:,:,jl)641 END DO642 643 ! Normalize the cumulative distribution to 1644 zworka(:,:) = 1._wp / Gsum(:,:,jpl)645 DO jl = 0, jpl646 Gsum(:,:,jl) = Gsum(:,:,jl) * zworka(:,:)647 END DO648 649 ! 1.3 Compute participation function a(h) = b(h).g(h) (athorn)650 !--------------------------------------------------------------------------------------------------651 ! Compute the participation function athorn; this is analogous to652 ! a(h) = b(h)g(h) as defined in Thorndike et al. (1975).653 ! area lost from category n due to ridging/closing654 ! athorn(n) = total area lost due to ridging/closing655 ! assume b(h) = (2/Gstar) * (1 - G(h)/Gstar).656 !657 ! The expressions for athorn are found by integrating b(h)g(h) between658 ! the category boundaries.659 !-----------------------------------------------------------------660 661 IF( nn_partfun == 0 ) THEN !--- Linear formulation (Thorndike et al., 1975)662 DO jl = 0, jpl663 DO jj = 1, jpj664 DO ji = 1, jpi665 IF( Gsum(ji,jj,jl) < rn_gstar) THEN666 athorn(ji,jj,jl) = Gstari * ( Gsum(ji,jj,jl) - Gsum(ji,jj,jl-1) ) * &667 & ( 2.0 - (Gsum(ji,jj,jl-1) + Gsum(ji,jj,jl) ) * Gstari )668 ELSEIF (Gsum(ji,jj,jl-1) < rn_gstar) THEN669 athorn(ji,jj,jl) = Gstari * ( rn_gstar - Gsum(ji,jj,jl-1) ) * &670 & ( 2.0 - ( Gsum(ji,jj,jl-1) + rn_gstar ) * Gstari )671 ELSE672 athorn(ji,jj,jl) = 0.0673 ENDIF674 END DO675 END DO676 END DO677 678 ELSE !--- Exponential, more stable formulation (Lipscomb et al, 2007)679 !680 zdummy = 1._wp / ( 1._wp - EXP(-astari) ) ! precompute exponential terms using Gsum as a work array681 DO jl = -1, jpl682 Gsum(:,:,jl) = EXP( -Gsum(:,:,jl) * astari ) * zdummy683 END DO684 DO jl = 0, jpl685 athorn(:,:,jl) = Gsum(:,:,jl-1) - Gsum(:,:,jl)686 END DO687 !688 ENDIF689 690 IF( ln_rafting ) THEN ! Ridging and rafting ice participation functions691 !692 DO jl = 1, jpl693 DO jj = 1, jpj694 DO ji = 1, jpi695 IF ( athorn(ji,jj,jl) > 0._wp ) THEN696 !!gm TANH( -X ) = - TANH( X ) so can be computed only 1 time....697 aridge(ji,jj,jl) = ( TANH ( rn_craft * ( ht_i(ji,jj,jl) - rn_hraft ) ) + 1.0 ) * 0.5 * athorn(ji,jj,jl)698 araft (ji,jj,jl) = ( TANH ( -rn_craft * ( ht_i(ji,jj,jl) - rn_hraft ) ) + 1.0 ) * 0.5 * athorn(ji,jj,jl)699 IF ( araft(ji,jj,jl) < epsi06 ) araft(ji,jj,jl) = 0._wp700 aridge(ji,jj,jl) = MAX( athorn(ji,jj,jl) - araft(ji,jj,jl), 0.0 )701 ENDIF702 END DO703 END DO704 END DO705 706 ELSE707 !708 DO jl = 1, jpl709 aridge(:,:,jl) = athorn(:,:,jl)710 END DO711 !712 ENDIF713 714 IF( ln_rafting ) THEN715 716 IF( MAXVAL(aridge + araft - athorn(:,:,1:jpl)) > epsi10 .AND. lwp ) THEN717 DO jl = 1, jpl718 DO jj = 1, jpj719 DO ji = 1, jpi720 IF ( aridge(ji,jj,jl) + araft(ji,jj,jl) - athorn(ji,jj,jl) > epsi10 ) THEN721 WRITE(numout,*) ' ALERTE 96 : wrong participation function ... '722 WRITE(numout,*) ' ji, jj, jl : ', ji, jj, jl723 WRITE(numout,*) ' lat, lon : ', gphit(ji,jj), glamt(ji,jj)724 WRITE(numout,*) ' aridge : ', aridge(ji,jj,1:jpl)725 WRITE(numout,*) ' araft : ', araft(ji,jj,1:jpl)726 WRITE(numout,*) ' athorn : ', athorn(ji,jj,1:jpl)727 ENDIF728 END DO729 END DO730 END DO731 ENDIF732 733 ENDIF734 735 !-----------------------------------------------------------------736 ! 2) Transfer function737 !-----------------------------------------------------------------738 ! Compute max and min ridged ice thickness for each ridging category.739 ! Assume ridged ice is uniformly distributed between hrmin and hrmax.740 !741 ! This parameterization is a modified version of Hibler (1980).742 ! The mean ridging thickness, hrmean, is proportional to hi^(0.5)743 ! and for very thick ridging ice must be >= krdgmin*hi744 !745 ! The minimum ridging thickness, hrmin, is equal to 2*hi746 ! (i.e., rafting) and for very thick ridging ice is747 ! constrained by hrmin <= (hrmean + hi)/2.748 !749 ! The maximum ridging thickness, hrmax, is determined by750 ! hrmean and hrmin.751 !752 ! These modifications have the effect of reducing the ice strength753 ! (relative to the Hibler formulation) when very thick ice is754 ! ridging.755 !756 ! aksum = net area removed/ total area removed757 ! where total area removed = area of ice that ridges758 ! net area removed = total area removed - area of new ridges759 !-----------------------------------------------------------------760 761 ! Transfer function762 DO jl = 1, jpl !all categories have a specific transfer function763 DO jj = 1, jpj764 DO ji = 1, jpi765 766 IF (a_i(ji,jj,jl) > epsi10 .AND. athorn(ji,jj,jl) > 0.0 ) THEN767 zhi = v_i(ji,jj,jl) / a_i(ji,jj,jl)768 hrmean = MAX(SQRT(rn_hstar*zhi), zhi*krdgmin)769 hrmin(ji,jj,jl) = MIN(2.0*zhi, 0.5*(hrmean + zhi))770 hrmax(ji,jj,jl) = 2.0*hrmean - hrmin(ji,jj,jl)771 hraft(ji,jj,jl) = kraft*zhi772 krdg(ji,jj,jl) = hrmean / zhi773 ELSE774 hraft(ji,jj,jl) = 0.0775 hrmin(ji,jj,jl) = 0.0776 hrmax(ji,jj,jl) = 0.0777 krdg (ji,jj,jl) = 1.0778 ENDIF779 780 END DO781 END DO782 END DO783 784 ! Normalization factor : aksum, ensures mass conservation785 aksum(:,:) = athorn(:,:,0)786 DO jl = 1, jpl787 aksum(:,:) = aksum(:,:) + aridge(:,:,jl) * ( 1._wp - 1._wp / krdg(:,:,jl) ) &788 & + araft (:,:,jl) * ( 1._wp - 1._wp / kraft )789 END DO790 !791 CALL wrk_dealloc( jpi,jpj, zworka )792 CALL wrk_dealloc( jpi,jpj,jpl+2, Gsum, kkstart = -1 )793 !794 END SUBROUTINE lim_itd_me_ridgeprep795 796 797 SUBROUTINE lim_itd_me_ridgeshift( opning, closing_gross, msnow_mlt, esnow_mlt )798 !!----------------------------------------------------------------------799 !! *** ROUTINE lim_itd_me_icestrength ***800 !!801 !! ** Purpose : shift ridging ice among thickness categories of ice thickness802 !!803 !! ** Method : Remove area, volume, and energy from each ridging category804 !! and add to thicker ice categories.805 !!----------------------------------------------------------------------806 REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: opning ! rate of opening due to divergence/shear807 REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: closing_gross ! rate at which area removed, excluding area of new ridges808 REAL(wp), DIMENSION(jpi,jpj), INTENT(inout) :: msnow_mlt ! mass of snow added to ocean (kg m-2)809 REAL(wp), DIMENSION(jpi,jpj), INTENT(inout) :: esnow_mlt ! energy needed to melt snow in ocean (J m-2)810 !811 CHARACTER (len=80) :: fieldid ! field identifier812 LOGICAL, PARAMETER :: l_conservation_check = .true. ! if true, check conservation (useful for debugging)813 !814 INTEGER :: ji, jj, jl, jl1, jl2, jk ! dummy loop indices815 INTEGER :: ij ! horizontal index, combines i and j loops816 INTEGER :: icells ! number of cells with aicen > puny817 REAL(wp) :: hL, hR, farea, ztmelts ! left and right limits of integration818 819 INTEGER , POINTER, DIMENSION(:) :: indxi, indxj ! compressed indices820 821 REAL(wp), POINTER, DIMENSION(:,:) :: vice_init, vice_final ! ice volume summed over categories822 REAL(wp), POINTER, DIMENSION(:,:) :: eice_init, eice_final ! ice energy summed over layers823 824 REAL(wp), POINTER, DIMENSION(:,:,:) :: aicen_init, vicen_init ! ice area & volume before ridging825 REAL(wp), POINTER, DIMENSION(:,:,:) :: vsnwn_init, esnwn_init ! snow volume & energy before ridging826 REAL(wp), POINTER, DIMENSION(:,:,:) :: smv_i_init, oa_i_init ! ice salinity & age before ridging827 828 REAL(wp), POINTER, DIMENSION(:,:,:,:) :: eicen_init ! ice energy before ridging829 830 REAL(wp), POINTER, DIMENSION(:,:) :: afrac , fvol ! fraction of category area ridged & new ridge volume going to n2831 REAL(wp), POINTER, DIMENSION(:,:) :: ardg1 , ardg2 ! area of ice ridged & new ridges832 REAL(wp), POINTER, DIMENSION(:,:) :: vsrdg , esrdg ! snow volume & energy of ridging ice833 REAL(wp), POINTER, DIMENSION(:,:) :: dhr , dhr2 ! hrmax - hrmin & hrmax^2 - hrmin^2834 835 REAL(wp), POINTER, DIMENSION(:,:) :: vrdg1 ! volume of ice ridged836 REAL(wp), POINTER, DIMENSION(:,:) :: vrdg2 ! volume of new ridges837 REAL(wp), POINTER, DIMENSION(:,:) :: vsw ! volume of seawater trapped into ridges838 REAL(wp), POINTER, DIMENSION(:,:) :: srdg1 ! sal*volume of ice ridged839 REAL(wp), POINTER, DIMENSION(:,:) :: srdg2 ! sal*volume of new ridges840 REAL(wp), POINTER, DIMENSION(:,:) :: smsw ! sal*volume of water trapped into ridges841 REAL(wp), POINTER, DIMENSION(:,:) :: oirdg1, oirdg2 ! ice age of ice ridged842 843 REAL(wp), POINTER, DIMENSION(:,:) :: afrft ! fraction of category area rafted844 REAL(wp), POINTER, DIMENSION(:,:) :: arft1 , arft2 ! area of ice rafted and new rafted zone845 REAL(wp), POINTER, DIMENSION(:,:) :: virft , vsrft ! ice & snow volume of rafting ice846 REAL(wp), POINTER, DIMENSION(:,:) :: esrft , smrft ! snow energy & salinity of rafting ice847 REAL(wp), POINTER, DIMENSION(:,:) :: oirft1, oirft2 ! ice age of ice rafted848 849 REAL(wp), POINTER, DIMENSION(:,:,:) :: eirft ! ice energy of rafting ice850 REAL(wp), POINTER, DIMENSION(:,:,:) :: erdg1 ! enth*volume of ice ridged851 REAL(wp), POINTER, DIMENSION(:,:,:) :: erdg2 ! enth*volume of new ridges852 REAL(wp), POINTER, DIMENSION(:,:,:) :: ersw ! enth of water trapped into ridges853 !!----------------------------------------------------------------------854 855 CALL wrk_alloc( (jpi+1)*(jpj+1), indxi, indxj )856 CALL wrk_alloc( jpi, jpj, vice_init, vice_final, eice_init, eice_final )857 CALL wrk_alloc( jpi, jpj, afrac, fvol , ardg1, ardg2, vsrdg, esrdg, dhr, dhr2 )858 CALL wrk_alloc( jpi, jpj, vrdg1, vrdg2, vsw , srdg1, srdg2, smsw, oirdg1, oirdg2 )859 CALL wrk_alloc( jpi, jpj, afrft, arft1, arft2, virft, vsrft, esrft, smrft, oirft1, oirft2 )860 CALL wrk_alloc( jpi, jpj, jpl, aicen_init, vicen_init, vsnwn_init, esnwn_init, smv_i_init, oa_i_init )861 CALL wrk_alloc( jpi, jpj, nlay_i, eirft, erdg1, erdg2, ersw )862 CALL wrk_alloc( jpi, jpj, nlay_i, jpl, eicen_init )863 864 ! Conservation check865 eice_init(:,:) = 0._wp866 867 IF( con_i ) THEN868 CALL lim_column_sum (jpl, v_i, vice_init )869 CALL lim_column_sum_energy (jpl, nlay_i, e_i, eice_init )870 DO ji = mi0(iiceprt), mi1(iiceprt)871 DO jj = mj0(jiceprt), mj1(jiceprt)872 WRITE(numout,*) ' vice_init : ', vice_init(ji,jj)873 WRITE(numout,*) ' eice_init : ', eice_init(ji,jj)874 END DO875 END DO876 ENDIF877 878 !-------------------------------------------------------------------------------879 ! 1) Compute change in open water area due to closing and opening.880 !-------------------------------------------------------------------------------881 DO jj = 1, jpj882 DO ji = 1, jpi883 ato_i(ji,jj) = ato_i(ji,jj) - athorn(ji,jj,0) * closing_gross(ji,jj) * rdt_ice &884 & + opning(ji,jj) * rdt_ice885 IF ( ato_i(ji,jj) < -epsi10 ) THEN ! there is a bug886 IF(lwp) WRITE(numout,*) 'Ridging error: ato_i < 0 -- ato_i : ',ato_i(ji,jj)887 ELSEIF( ato_i(ji,jj) < 0._wp ) THEN ! roundoff error888 ato_i(ji,jj) = 0._wp889 ENDIF890 END DO891 END DO892 893 !-----------------------------------------------------------------894 ! 2) Save initial state variables895 !-----------------------------------------------------------------896 aicen_init(:,:,:) = a_i (:,:,:)897 vicen_init(:,:,:) = v_i (:,:,:)898 vsnwn_init(:,:,:) = v_s (:,:,:)899 smv_i_init(:,:,:) = smv_i(:,:,:)900 esnwn_init(:,:,:) = e_s (:,:,1,:)901 eicen_init(:,:,:,:) = e_i (:,:,:,:)902 oa_i_init (:,:,:) = oa_i (:,:,:)903 904 !905 !-----------------------------------------------------------------906 ! 3) Pump everything from ice which is being ridged / rafted907 !-----------------------------------------------------------------908 ! Compute the area, volume, and energy of ice ridging in each909 ! category, along with the area of the resulting ridge.910 911 DO jl1 = 1, jpl !jl1 describes the ridging category912 913 !------------------------------------------------914 ! 3.1) Identify grid cells with nonzero ridging915 !------------------------------------------------916 917 icells = 0918 DO jj = 1, jpj919 DO ji = 1, jpi920 IF( aicen_init(ji,jj,jl1) > epsi10 .AND. athorn(ji,jj,jl1) > 0._wp &921 & .AND. closing_gross(ji,jj) > 0._wp ) THEN922 icells = icells + 1923 indxi(icells) = ji924 indxj(icells) = jj925 ENDIF926 END DO927 END DO928 929 DO ij = 1, icells930 ji = indxi(ij)931 jj = indxj(ij)932 933 !--------------------------------------------------------------------934 ! 3.2) Compute area of ridging ice (ardg1) and of new ridge (ardg2)935 !--------------------------------------------------------------------936 937 ardg1(ji,jj) = aridge(ji,jj,jl1)*closing_gross(ji,jj)*rdt_ice938 arft1(ji,jj) = araft (ji,jj,jl1)*closing_gross(ji,jj)*rdt_ice939 ardg2(ji,jj) = ardg1(ji,jj) / krdg(ji,jj,jl1)940 arft2(ji,jj) = arft1(ji,jj) / kraft941 942 !---------------------------------------------------------------943 ! 3.3) Compute ridging /rafting fractions, make sure afrac <=1944 !---------------------------------------------------------------945 946 afrac(ji,jj) = ardg1(ji,jj) / aicen_init(ji,jj,jl1) !ridging947 afrft(ji,jj) = arft1(ji,jj) / aicen_init(ji,jj,jl1) !rafting948 949 IF( afrac(ji,jj) > kamax + epsi10 ) THEN ! there is a bug950 IF(lwp) WRITE(numout,*) ' ardg > a_i -- ardg, aicen_init : ', ardg1(ji,jj), aicen_init(ji,jj,jl1)951 ELSEIF( afrac(ji,jj) > kamax ) THEN ! roundoff error952 afrac(ji,jj) = kamax953 ENDIF954 955 IF( afrft(ji,jj) > kamax + epsi10 ) THEN ! there is a bug956 IF(lwp) WRITE(numout,*) ' arft > a_i -- arft, aicen_init : ', arft1(ji,jj), aicen_init(ji,jj,jl1)957 ELSEIF( afrft(ji,jj) > kamax) THEN ! roundoff error958 afrft(ji,jj) = kamax959 ENDIF960 961 !--------------------------------------------------------------------------962 ! 3.4) Subtract area, volume, and energy from ridging963 ! / rafting category n1.964 !--------------------------------------------------------------------------965 vrdg1(ji,jj) = vicen_init(ji,jj,jl1) * afrac(ji,jj)966 vrdg2(ji,jj) = vrdg1(ji,jj) * ( 1. + rn_por_rdg )967 vsw (ji,jj) = vrdg1(ji,jj) * rn_por_rdg968 969 vsrdg (ji,jj) = vsnwn_init(ji,jj,jl1) * afrac(ji,jj)970 esrdg (ji,jj) = esnwn_init(ji,jj,jl1) * afrac(ji,jj)971 srdg1 (ji,jj) = smv_i_init(ji,jj,jl1) * afrac(ji,jj)972 oirdg1(ji,jj) = oa_i_init (ji,jj,jl1) * afrac(ji,jj)973 oirdg2(ji,jj) = oa_i_init (ji,jj,jl1) * afrac(ji,jj) / krdg(ji,jj,jl1)974 975 ! rafting volumes, heat contents ...976 virft (ji,jj) = vicen_init(ji,jj,jl1) * afrft(ji,jj)977 vsrft (ji,jj) = vsnwn_init(ji,jj,jl1) * afrft(ji,jj)978 esrft (ji,jj) = esnwn_init(ji,jj,jl1) * afrft(ji,jj)979 smrft (ji,jj) = smv_i_init(ji,jj,jl1) * afrft(ji,jj)980 oirft1(ji,jj) = oa_i_init (ji,jj,jl1) * afrft(ji,jj)981 oirft2(ji,jj) = oa_i_init (ji,jj,jl1) * afrft(ji,jj) / kraft982 983 ! substract everything984 a_i(ji,jj,jl1) = a_i(ji,jj,jl1) - ardg1 (ji,jj) - arft1 (ji,jj)985 v_i(ji,jj,jl1) = v_i(ji,jj,jl1) - vrdg1 (ji,jj) - virft (ji,jj)986 v_s(ji,jj,jl1) = v_s(ji,jj,jl1) - vsrdg (ji,jj) - vsrft (ji,jj)987 e_s(ji,jj,1,jl1) = e_s(ji,jj,1,jl1) - esrdg (ji,jj) - esrft (ji,jj)988 smv_i(ji,jj,jl1) = smv_i(ji,jj,jl1) - srdg1 (ji,jj) - smrft (ji,jj)989 oa_i(ji,jj,jl1) = oa_i(ji,jj,jl1) - oirdg1(ji,jj) - oirft1(ji,jj)990 991 !-----------------------------------------------------------------992 ! 3.5) Compute properties of new ridges993 !-----------------------------------------------------------------994 !---------995 ! Salinity996 !---------997 smsw(ji,jj) = vsw(ji,jj) * sss_m(ji,jj) ! salt content of seawater frozen in voids !! MV HC2014998 srdg2(ji,jj) = srdg1(ji,jj) + smsw(ji,jj) ! salt content of new ridge999 1000 !srdg2(ji,jj) = MIN( rn_simax * vrdg2(ji,jj) , zsrdg2 ) ! impose a maximum salinity1001 1002 sfx_dyn(ji,jj) = sfx_dyn(ji,jj) - smsw(ji,jj) * rhoic * r1_rdtice1003 wfx_dyn(ji,jj) = wfx_dyn(ji,jj) - vsw (ji,jj) * rhoic * r1_rdtice ! increase in ice volume du to seawater frozen in voids1004 1005 !------------------------------------1006 ! 3.6 Increment ridging diagnostics1007 !------------------------------------1008 1009 ! jl1 looping 1-jpl1010 ! ij looping 1-icells1011 1012 dardg1dt (ji,jj) = dardg1dt(ji,jj) + ardg1(ji,jj) + arft1(ji,jj)1013 dardg2dt (ji,jj) = dardg2dt(ji,jj) + ardg2(ji,jj) + arft2(ji,jj)1014 opening (ji,jj) = opening (ji,jj) + opning(ji,jj) * rdt_ice1015 1016 IF( con_i ) vice_init(ji,jj) = vice_init(ji,jj) + vrdg2(ji,jj) - vrdg1(ji,jj)1017 1018 !------------------------------------------1019 ! 3.7 Put the snow somewhere in the ocean1020 !------------------------------------------1021 ! Place part of the snow lost by ridging into the ocean.1022 ! Note that esnow_mlt < 0; the ocean must cool to melt snow.1023 ! If the ocean temp = Tf already, new ice must grow.1024 ! During the next time step, thermo_rates will determine whether1025 ! the ocean cools or new ice grows.1026 ! jl1 looping 1-jpl1027 ! ij looping 1-icells1028 1029 msnow_mlt(ji,jj) = msnow_mlt(ji,jj) + rhosn*vsrdg(ji,jj)*(1.0-rn_fsnowrdg) & ! rafting included1030 & + rhosn*vsrft(ji,jj)*(1.0-rn_fsnowrft)1031 1032 ! in J/m2 (same as e_s)1033 esnow_mlt(ji,jj) = esnow_mlt(ji,jj) - esrdg(ji,jj)*(1.0-rn_fsnowrdg) & !rafting included1034 & - esrft(ji,jj)*(1.0-rn_fsnowrft)1035 1036 !-----------------------------------------------------------------1037 ! 3.8 Compute quantities used to apportion ice among categories1038 ! in the n2 loop below1039 !-----------------------------------------------------------------1040 1041 ! jl1 looping 1-jpl1042 ! ij looping 1-icells1043 1044 dhr (ji,jj) = hrmax(ji,jj,jl1) - hrmin(ji,jj,jl1)1045 dhr2(ji,jj) = hrmax(ji,jj,jl1) * hrmax(ji,jj,jl1) - hrmin(ji,jj,jl1) * hrmin(ji,jj,jl1)1046 1047 END DO1048 1049 !--------------------------------------------------------------------1050 ! 3.9 Compute ridging ice enthalpy, remove it from ridging ice and1051 ! compute ridged ice enthalpy1052 !--------------------------------------------------------------------1053 DO jk = 1, nlay_i1054 DO ij = 1, icells1055 ji = indxi(ij)1056 jj = indxj(ij)1057 ! heat content of ridged ice1058 erdg1(ji,jj,jk) = eicen_init(ji,jj,jk,jl1) * afrac(ji,jj)1059 eirft(ji,jj,jk) = eicen_init(ji,jj,jk,jl1) * afrft(ji,jj)1060 e_i (ji,jj,jk,jl1) = e_i(ji,jj,jk,jl1) - erdg1(ji,jj,jk) - eirft(ji,jj,jk)1061 1062 1063 ! enthalpy of the trapped seawater (J/m2, >0)1064 ! clem: if sst>0, then ersw <0 (is that possible?)1065 ersw(ji,jj,jk) = - rhoic * vsw(ji,jj) * rcp * sst_m(ji,jj) * r1_nlay_i1066 1067 ! heat flux to the ocean1068 hfx_dyn(ji,jj) = hfx_dyn(ji,jj) + ersw(ji,jj,jk) * r1_rdtice ! > 0 [W.m-2] ocean->ice flux1069 1070 ! it is added to sea ice because the sign convention is the opposite of the sign convention for the ocean1071 erdg2(ji,jj,jk) = erdg1(ji,jj,jk) + ersw(ji,jj,jk)1072 1073 END DO1074 END DO1075 1076 1077 IF( con_i ) THEN1078 DO jk = 1, nlay_i1079 DO ij = 1, icells1080 ji = indxi(ij)1081 jj = indxj(ij)1082 eice_init(ji,jj) = eice_init(ji,jj) + erdg2(ji,jj,jk) - erdg1(ji,jj,jk)1083 END DO1084 END DO1085 ENDIF1086 1087 !-------------------------------------------------------------------------------1088 ! 4) Add area, volume, and energy of new ridge to each category jl21089 !-------------------------------------------------------------------------------1090 ! jl1 looping 1-jpl1091 DO jl2 = 1, jpl1092 ! over categories to which ridged ice is transferred1093 DO ij = 1, icells1094 ji = indxi(ij)1095 jj = indxj(ij)1096 1097 ! Compute the fraction of ridged ice area and volume going to1098 ! thickness category jl2.1099 ! Transfer area, volume, and energy accordingly.1100 1101 IF( hrmin(ji,jj,jl1) >= hi_max(jl2) .OR. hrmax(ji,jj,jl1) <= hi_max(jl2-1) ) THEN1102 hL = 0._wp1103 hR = 0._wp1104 ELSE1105 hL = MAX( hrmin(ji,jj,jl1), hi_max(jl2-1) )1106 hR = MIN( hrmax(ji,jj,jl1), hi_max(jl2) )1107 ENDIF1108 1109 ! fraction of ridged ice area and volume going to n21110 farea = ( hR - hL ) / dhr(ji,jj)1111 fvol(ji,jj) = ( hR*hR - hL*hL ) / dhr2(ji,jj)1112 1113 a_i (ji,jj ,jl2) = a_i (ji,jj ,jl2) + ardg2 (ji,jj) * farea1114 v_i (ji,jj ,jl2) = v_i (ji,jj ,jl2) + vrdg2 (ji,jj) * fvol(ji,jj)1115 v_s (ji,jj ,jl2) = v_s (ji,jj ,jl2) + vsrdg (ji,jj) * fvol(ji,jj) * rn_fsnowrdg1116 e_s (ji,jj,1,jl2) = e_s (ji,jj,1,jl2) + esrdg (ji,jj) * fvol(ji,jj) * rn_fsnowrdg1117 smv_i(ji,jj ,jl2) = smv_i(ji,jj ,jl2) + srdg2 (ji,jj) * fvol(ji,jj)1118 oa_i (ji,jj ,jl2) = oa_i (ji,jj ,jl2) + oirdg2(ji,jj) * farea1119 1120 END DO1121 1122 ! Transfer ice energy to category jl2 by ridging1123 DO jk = 1, nlay_i1124 DO ij = 1, icells1125 ji = indxi(ij)1126 jj = indxj(ij)1127 e_i(ji,jj,jk,jl2) = e_i(ji,jj,jk,jl2) + fvol(ji,jj) * erdg2(ji,jj,jk)1128 END DO1129 END DO1130 !1131 END DO ! jl2 (new ridges)1132 1133 DO jl2 = 1, jpl1134 1135 DO ij = 1, icells1136 ji = indxi(ij)1137 jj = indxj(ij)1138 ! Compute the fraction of rafted ice area and volume going to1139 ! thickness category jl2, transfer area, volume, and energy accordingly.1140 !1141 IF( hraft(ji,jj,jl1) <= hi_max(jl2) .AND. hraft(ji,jj,jl1) > hi_max(jl2-1) ) THEN1142 a_i (ji,jj ,jl2) = a_i (ji,jj ,jl2) + arft2 (ji,jj)1143 v_i (ji,jj ,jl2) = v_i (ji,jj ,jl2) + virft (ji,jj)1144 v_s (ji,jj ,jl2) = v_s (ji,jj ,jl2) + vsrft (ji,jj) * rn_fsnowrft1145 e_s (ji,jj,1,jl2) = e_s (ji,jj,1,jl2) + esrft (ji,jj) * rn_fsnowrft1146 smv_i(ji,jj ,jl2) = smv_i(ji,jj ,jl2) + smrft (ji,jj)1147 oa_i (ji,jj ,jl2) = oa_i (ji,jj ,jl2) + oirft2(ji,jj)1148 ENDIF1149 !1150 END DO1151 1152 ! Transfer rafted ice energy to category jl21153 DO jk = 1, nlay_i1154 DO ij = 1, icells1155 ji = indxi(ij)1156 jj = indxj(ij)1157 IF( hraft(ji,jj,jl1) <= hi_max(jl2) .AND. hraft(ji,jj,jl1) > hi_max(jl2-1) ) THEN1158 e_i(ji,jj,jk,jl2) = e_i(ji,jj,jk,jl2) + eirft(ji,jj,jk)1159 ENDIF1160 END DO1161 END DO1162 1163 END DO1164 1165 END DO ! jl1 (deforming categories)1166 1167 ! Conservation check1168 IF ( con_i ) THEN1169 CALL lim_column_sum (jpl, v_i, vice_final)1170 fieldid = ' v_i : limitd_me '1171 CALL lim_cons_check (vice_init, vice_final, 1.0e-6, fieldid)1172 1173 CALL lim_column_sum_energy (jpl, nlay_i, e_i, eice_final )1174 fieldid = ' e_i : limitd_me '1175 CALL lim_cons_check (eice_init, eice_final, 1.0e-2, fieldid)1176 1177 DO ji = mi0(iiceprt), mi1(iiceprt)1178 DO jj = mj0(jiceprt), mj1(jiceprt)1179 WRITE(numout,*) ' vice_init : ', vice_init (ji,jj)1180 WRITE(numout,*) ' vice_final : ', vice_final(ji,jj)1181 WRITE(numout,*) ' eice_init : ', eice_init (ji,jj)1182 WRITE(numout,*) ' eice_final : ', eice_final(ji,jj)1183 END DO1184 END DO1185 ENDIF1186 !1187 CALL wrk_dealloc( (jpi+1)*(jpj+1), indxi, indxj )1188 CALL wrk_dealloc( jpi, jpj, vice_init, vice_final, eice_init, eice_final )1189 CALL wrk_dealloc( jpi, jpj, afrac, fvol , ardg1, ardg2, vsrdg, esrdg, dhr, dhr2 )1190 CALL wrk_dealloc( jpi, jpj, vrdg1, vrdg2, vsw , srdg1, srdg2, smsw, oirdg1, oirdg2 )1191 CALL wrk_dealloc( jpi, jpj, afrft, arft1, arft2, virft, vsrft, esrft, smrft, oirft1, oirft2 )1192 CALL wrk_dealloc( jpi, jpj, jpl, aicen_init, vicen_init, vsnwn_init, esnwn_init, smv_i_init, oa_i_init )1193 CALL wrk_dealloc( jpi, jpj, nlay_i, eirft, erdg1, erdg2, ersw )1194 CALL wrk_dealloc( jpi, jpj, nlay_i, jpl, eicen_init )1195 !1196 END SUBROUTINE lim_itd_me_ridgeshift1197 933 1198 934 SUBROUTINE lim_itd_me_init -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limrhg.F90
r5836 r6416 159 159 CALL wrk_alloc( jpi,jpj, u_oce2, u_ice2, v_oce1 , v_ice1 , zmask ) 160 160 CALL wrk_alloc( jpi,jpj, zf1 , zu_ice, zf2 , zv_ice , zdt , zds ) 161 CALL wrk_alloc( jpi,jpj, z dt , zds , zs1 , zs2 , zs12 , zresr , zpice )161 CALL wrk_alloc( jpi,jpj, zs1 , zs2 , zs12 , zresr , zpice ) 162 162 163 163 #if defined key_lim2 && ! defined key_lim2_vp … … 690 690 CALL wrk_dealloc( jpi,jpj, u_oce2, u_ice2, v_oce1 , v_ice1 , zmask ) 691 691 CALL wrk_dealloc( jpi,jpj, zf1 , zu_ice, zf2 , zv_ice , zdt , zds ) 692 CALL wrk_dealloc( jpi,jpj, z dt , zds , zs1 , zs2 , zs12 , zresr , zpice )692 CALL wrk_dealloc( jpi,jpj, zs1 , zs2 , zs12 , zresr , zpice ) 693 693 694 694 END SUBROUTINE lim_rhg -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limsbc.F90
r6140 r6416 107 107 REAL(wp) :: zqsr ! New solar flux received by the ocean 108 108 REAL(wp), POINTER, DIMENSION(:,:,:) :: zalb_cs, zalb_os ! 3D workspace 109 REAL(wp), POINTER, DIMENSION(:,:) :: zalb ! 2D workspace 109 110 !!--------------------------------------------------------------------- 110 111 ! 111 112 ! make calls for heat fluxes before it is modified 113 ! pfrld is the lead fraction at the previous time step (actually between TRP and THD) 112 114 IF( iom_use('qsr_oce') ) CALL iom_put( "qsr_oce" , qsr_oce(:,:) * pfrld(:,:) ) ! solar flux at ocean surface 113 115 IF( iom_use('qns_oce') ) CALL iom_put( "qns_oce" , qns_oce(:,:) * pfrld(:,:) + qemp_oce(:,:) ) ! non-solar flux at ocean surface … … 118 120 IF( iom_use('qt_ice' ) ) CALL iom_put( "qt_ice" , SUM( ( qns_ice(:,:,:) + qsr_ice(:,:,:) ) & 119 121 & * a_i_b(:,:,:), dim=3 ) + qemp_ice(:,:) ) 120 IF( iom_use('qemp_oce' ) ) CALL iom_put( "qemp_oce" , qemp_oce(:,:) ) 121 IF( iom_use('qemp_ice' ) ) CALL iom_put( "qemp_ice" , qemp_ice(:,:) ) 122 123 ! pfrld is the lead fraction at the previous time step (actually between TRP and THD) 122 IF( iom_use('qemp_oce') ) CALL iom_put( "qemp_oce" , qemp_oce(:,:) ) 123 IF( iom_use('qemp_ice') ) CALL iom_put( "qemp_ice" , qemp_ice(:,:) ) 124 IF( iom_use('emp_oce' ) ) CALL iom_put( "emp_oce" , emp_oce(:,:) ) ! emp over ocean (taking into account the snow blown away from the ice) 125 IF( iom_use('emp_ice' ) ) CALL iom_put( "emp_ice" , emp_ice(:,:) ) ! emp over ice (taking into account the snow blown away from the ice) 126 127 ! albedo output 128 CALL wrk_alloc( jpi,jpj, zalb ) 129 130 zalb(:,:) = 0._wp 131 WHERE ( SUM( a_i_b, dim=3 ) <= epsi06 ) ; zalb(:,:) = 0.066_wp 132 ELSEWHERE ; zalb(:,:) = SUM( alb_ice * a_i_b, dim=3 ) / SUM( a_i_b, dim=3 ) 133 END WHERE 134 IF( iom_use('alb_ice' ) ) CALL iom_put( "alb_ice" , zalb(:,:) ) ! ice albedo output 135 136 zalb(:,:) = SUM( alb_ice * a_i_b, dim=3 ) + 0.066_wp * ( 1._wp - SUM( a_i_b, dim=3 ) ) 137 IF( iom_use('albedo' ) ) CALL iom_put( "albedo" , zalb(:,:) ) ! ice albedo output 138 139 CALL wrk_dealloc( jpi,jpj, zalb ) 140 124 141 DO jj = 1, jpj 125 142 DO ji = 1, jpi … … 140 157 hfx_out(ji,jj) = hfx_out(ji,jj) + zqmass + zqsr 141 158 142 ! Add the residual from heat diffusion equation (W.m-2) 143 !------------------------------------------------------- 144 hfx_out(ji,jj) = hfx_out(ji,jj) + hfx_err_dif(ji,jj) 159 ! Add the residual from heat diffusion equation and sublimation (W.m-2) 160 !---------------------------------------------------------------------- 161 hfx_out(ji,jj) = hfx_out(ji,jj) + hfx_err_dif(ji,jj) + & 162 & ( hfx_sub(ji,jj) - SUM( qevap_ice(ji,jj,:) * a_i_b(ji,jj,:) ) ) 145 163 146 164 ! New qsr and qns used to compute the oceanic heat flux at the next time step 147 !--------------------------------------------------- 165 !---------------------------------------------------------------------------- 148 166 qsr(ji,jj) = zqsr 149 167 qns(ji,jj) = hfx_out(ji,jj) - zqsr … … 165 183 166 184 ! mass flux at the ocean/ice interface 167 fmmflx(ji,jj) = - ( wfx_ice(ji,jj) + wfx_snw(ji,jj) ) * r1_rdtice ! F/M mass flux save at least for biogeochemical model 168 emp(ji,jj) = emp_oce(ji,jj) - wfx_ice(ji,jj) - wfx_snw(ji,jj) ! mass flux + F/M mass flux (always ice/ocean mass exchange) 169 185 fmmflx(ji,jj) = - ( wfx_ice(ji,jj) + wfx_snw(ji,jj) + wfx_err_sub(ji,jj) ) ! F/M mass flux save at least for biogeochemical model 186 emp(ji,jj) = emp_oce(ji,jj) - wfx_ice(ji,jj) - wfx_snw(ji,jj) - wfx_err_sub(ji,jj) ! mass flux + F/M mass flux (always ice/ocean mass exchange) 170 187 END DO 171 188 END DO … … 175 192 !------------------------------------------! 176 193 sfx(:,:) = sfx_bog(:,:) + sfx_bom(:,:) + sfx_sum(:,:) + sfx_sni(:,:) + sfx_opw(:,:) & 177 & + sfx_res(:,:) + sfx_dyn(:,:) + sfx_bri(:,:) 194 & + sfx_res(:,:) + sfx_dyn(:,:) + sfx_bri(:,:) + sfx_sub(:,:) 178 195 179 196 !-------------------------------------------------------------! -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limthd.F90
r6140 r6416 440 440 ! 441 441 DO ji = kideb, kiut 442 zdh_mel = MIN( 0._wp, dh_i_surf(ji) + dh_i_bott(ji) + dh_snowice(ji) )442 zdh_mel = MIN( 0._wp, dh_i_surf(ji) + dh_i_bott(ji) + dh_snowice(ji) + dh_i_sub(ji) ) 443 443 IF( zdh_mel < 0._wp .AND. a_i_1d(ji) > 0._wp ) THEN 444 444 zvi = a_i_1d(ji) * ht_i_1d(ji) … … 495 495 ! 496 496 CALL tab_2d_1d( nbpb, qprec_ice_1d(1:nbpb), qprec_ice(:,:) , jpi, jpj, npb(1:nbpb) ) 497 CALL tab_2d_1d( nbpb, qevap_ice_1d(1:nbpb), qevap_ice(:,:,jl) , jpi, jpj, npb(1:nbpb) ) 497 498 CALL tab_2d_1d( nbpb, qsr_ice_1d (1:nbpb), qsr_ice(:,:,jl) , jpi, jpj, npb(1:nbpb) ) 498 499 CALL tab_2d_1d( nbpb, fr1_i0_1d (1:nbpb), fr1_i0 , jpi, jpj, npb(1:nbpb) ) … … 524 525 CALL tab_2d_1d( nbpb, sfx_bri_1d (1:nbpb), sfx_bri , jpi, jpj, npb(1:nbpb) ) 525 526 CALL tab_2d_1d( nbpb, sfx_res_1d (1:nbpb), sfx_res , jpi, jpj, npb(1:nbpb) ) 527 CALL tab_2d_1d( nbpb, sfx_sub_1d (1:nbpb), sfx_sub , jpi, jpj,npb(1:nbpb) ) 526 528 ! 527 529 CALL tab_2d_1d( nbpb, hfx_thd_1d (1:nbpb), hfx_thd , jpi, jpj, npb(1:nbpb) ) … … 574 576 CALL tab_1d_2d( nbpb, sfx_res , npb, sfx_res_1d(1:nbpb) , jpi, jpj ) 575 577 CALL tab_1d_2d( nbpb, sfx_bri , npb, sfx_bri_1d(1:nbpb) , jpi, jpj ) 578 CALL tab_1d_2d( nbpb, sfx_sub , npb, sfx_sub_1d(1:nbpb) , jpi, jpj ) 576 579 ! 577 580 CALL tab_1d_2d( nbpb, hfx_thd , npb, hfx_thd_1d(1:nbpb) , jpi, jpj ) -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limthd_dh.F90
r5487 r6416 74 74 75 75 REAL(wp) :: ztmelts ! local scalar 76 REAL(wp) :: z fdum76 REAL(wp) :: zdum 77 77 REAL(wp) :: zfracs ! fractionation coefficient for bottom salt entrapment 78 78 REAL(wp) :: zs_snic ! snow-ice salinity … … 95 95 REAL(wp), POINTER, DIMENSION(:) :: zq_rema ! remaining heat at the end of the routine (J.m-2) 96 96 REAL(wp), POINTER, DIMENSION(:) :: zf_tt ! Heat budget to determine melting or freezing(W.m-2) 97 REAL(wp), POINTER, DIMENSION(:) :: zevap_rema ! remaining mass flux from sublimation (kg.m-2) 97 98 98 99 REAL(wp), POINTER, DIMENSION(:) :: zdh_s_mel ! snow melt … … 105 106 106 107 REAL(wp), POINTER, DIMENSION(:) :: zqh_i ! total ice heat content (J.m-2) 107 REAL(wp), POINTER, DIMENSION(:) :: zqh_s ! total snow heat content (J.m-2)108 REAL(wp), POINTER, DIMENSION(:) :: zq_s ! total snow enthalpy (J.m-3)109 108 REAL(wp), POINTER, DIMENSION(:) :: zsnw ! distribution of snow after wind blowing 110 109 … … 122 121 END SELECT 123 122 124 CALL wrk_alloc( jpij, zqprec, zq_su, zq_bo, zf_tt, zq_rema, zsnw )125 CALL wrk_alloc( jpij, zdh_s_mel, zdh_s_pre, zdh_s_sub, zqh_i , zqh_s, zq_s)123 CALL wrk_alloc( jpij, zqprec, zq_su, zq_bo, zf_tt, zq_rema, zsnw, zevap_rema ) 124 CALL wrk_alloc( jpij, zdh_s_mel, zdh_s_pre, zdh_s_sub, zqh_i ) 126 125 CALL wrk_alloc( jpij, nlay_i, zdeltah, zh_i ) 127 126 CALL wrk_alloc( jpij, nlay_i, icount ) 128 127 129 dh_i_surf (:) = 0._wp ; dh_i_bott (:) = 0._wp ; dh_snowice(:) = 0._wp 128 dh_i_surf (:) = 0._wp ; dh_i_bott (:) = 0._wp ; dh_snowice(:) = 0._wp ; dh_i_sub(:) = 0._wp 130 129 dsm_i_se_1d(:) = 0._wp ; dsm_i_si_1d(:) = 0._wp 131 130 132 131 zqprec (:) = 0._wp ; zq_su (:) = 0._wp ; zq_bo (:) = 0._wp ; zf_tt(:) = 0._wp 133 zq_rema (:) = 0._wp ; zsnw (:) = 0._wp 132 zq_rema (:) = 0._wp ; zsnw (:) = 0._wp ; zevap_rema(:) = 0._wp ; 134 133 zdh_s_mel(:) = 0._wp ; zdh_s_pre(:) = 0._wp ; zdh_s_sub(:) = 0._wp ; zqh_i(:) = 0._wp 135 zqh_s (:) = 0._wp ; zq_s (:) = 0._wp136 134 137 135 zdeltah(:,:) = 0._wp ; zh_i(:,:) = 0._wp … … 159 157 ! 160 158 DO ji = kideb, kiut 161 z fdum= qns_ice_1d(ji) + ( 1._wp - i0(ji) ) * qsr_ice_1d(ji) - fc_su(ji)159 zdum = qns_ice_1d(ji) + ( 1._wp - i0(ji) ) * qsr_ice_1d(ji) - fc_su(ji) 162 160 zf_tt(ji) = fc_bo_i(ji) + fhtur_1d(ji) + fhld_1d(ji) 163 161 164 zq_su (ji) = MAX( 0._wp, z fdum* rdt_ice ) * MAX( 0._wp , SIGN( 1._wp, t_su_1d(ji) - rt0 ) )162 zq_su (ji) = MAX( 0._wp, zdum * rdt_ice ) * MAX( 0._wp , SIGN( 1._wp, t_su_1d(ji) - rt0 ) ) 165 163 zq_bo (ji) = MAX( 0._wp, zf_tt(ji) * rdt_ice ) 166 164 END DO … … 187 185 ! 2) Computing layer thicknesses and enthalpies. ! 188 186 !------------------------------------------------------------! 189 !190 DO jk = 1, nlay_s191 DO ji = kideb, kiut192 zqh_s(ji) = zqh_s(ji) + q_s_1d(ji,jk) * ht_s_1d(ji) * r1_nlay_s193 END DO194 END DO195 187 ! 196 188 DO jk = 1, nlay_i … … 275 267 END DO 276 268 277 !---------------------- 278 ! 3.2 S now sublimation279 !---------------------- 269 !------------------------------ 270 ! 3.2 Sublimation (part1: snow) 271 !------------------------------ 280 272 ! qla_ice is always >=0 (upwards), heat goes to the atmosphere, therefore snow sublimates 281 273 ! clem comment: not counted in mass/heat exchange in limsbc since this is an exchange with atm. (not ocean) 282 ! clem comment: ice should also sublimate283 274 zdeltah(:,:) = 0._wp 284 ! coupled mode: sublimation is set to 0 (evap_ice = 0) until further notice 285 ! forced mode: snow thickness change due to sublimation 286 DO ji = kideb, kiut 287 zdh_s_sub(ji) = MAX( - ht_s_1d(ji) , - evap_ice_1d(ji) * r1_rhosn * rdt_ice ) 288 ! Heat flux by sublimation [W.m-2], < 0 289 ! sublimate first snow that had fallen, then pre-existing snow 275 DO ji = kideb, kiut 276 zdh_s_sub(ji) = MAX( - ht_s_1d(ji) , - evap_ice_1d(ji) * r1_rhosn * rdt_ice ) 277 ! remaining evap in kg.m-2 (used for ice melting later on) 278 zevap_rema(ji) = evap_ice_1d(ji) * rdt_ice + zdh_s_sub(ji) * rhosn 279 ! Heat flux by sublimation [W.m-2], < 0 (sublimate first snow that had fallen, then pre-existing snow) 290 280 zdeltah(ji,1) = MAX( zdh_s_sub(ji), - zdh_s_pre(ji) ) 291 281 hfx_sub_1d(ji) = hfx_sub_1d(ji) + ( zdeltah(ji,1) * zqprec(ji) + ( zdh_s_sub(ji) - zdeltah(ji,1) ) * q_s_1d(ji,1) & … … 309 299 !------------------------------------------- 310 300 ! new temp and enthalpy of the snow (remaining snow precip + remaining pre-existing snow) 311 zq_s(:) = 0._wp312 301 DO jk = 1, nlay_s 313 302 DO ji = kideb,kiut 314 rswitch = MAX( 0._wp , SIGN( 1._wp, ht_s_1d(ji) - epsi20 ) ) 315 q_s_1d(ji,jk) = rswitch / MAX( ht_s_1d(ji), epsi20 ) * & 316 & ( ( zdh_s_pre(ji) ) * zqprec(ji) + & 317 & ( ht_s_1d(ji) - zdh_s_pre(ji) ) * rhosn * ( cpic * ( rt0 - t_s_1d(ji,jk) ) + lfus ) ) 318 zq_s(ji) = zq_s(ji) + q_s_1d(ji,jk) 303 rswitch = MAX( 0._wp , SIGN( 1._wp, ht_s_1d(ji) - epsi20 ) ) 304 q_s_1d(ji,jk) = rswitch / MAX( ht_s_1d(ji), epsi20 ) * & 305 & ( ( zdh_s_pre(ji) ) * zqprec(ji) + & 306 & ( ht_s_1d(ji) - zdh_s_pre(ji) ) * rhosn * ( cpic * ( rt0 - t_s_1d(ji,jk) ) + lfus ) ) 319 307 END DO 320 308 END DO … … 370 358 zQm = zfmdt * zEw ! Energy of the melt water sent to the ocean [J/m2, <0] 371 359 372 ! Contribution to salt flux (clem: using sm_i_1d and not s_i_1d(jk) is ok)360 ! Contribution to salt flux >0 (clem: using sm_i_1d and not s_i_1d(jk) is ok) 373 361 sfx_sum_1d(ji) = sfx_sum_1d(ji) - rhoic * a_i_1d(ji) * zdeltah(ji,jk) * sm_i_1d(ji) * r1_rdtice 374 362 … … 383 371 384 372 END IF 373 ! ---------------------- 374 ! Sublimation part2: ice 375 ! ---------------------- 376 zdum = MAX( - ( zh_i(ji,jk) + zdeltah(ji,jk) ) , - zevap_rema(ji) * r1_rhoic ) 377 zdeltah(ji,jk) = zdeltah(ji,jk) + zdum 378 dh_i_sub(ji) = dh_i_sub(ji) + zdum 379 ! Salt flux > 0 (clem2016: flux is sent to the ocean for simplicity but salt should remain in the ice except if all ice is melted. 380 ! It must be corrected at some point) 381 sfx_sub_1d(ji) = sfx_sub_1d(ji) - rhoic * a_i_1d(ji) * zdum * sm_i_1d(ji) * r1_rdtice 382 ! Heat flux [W.m-2], < 0 383 hfx_sub_1d(ji) = hfx_sub_1d(ji) + zdum * q_i_1d(ji,jk) * a_i_1d(ji) * r1_rdtice 384 ! Mass flux > 0 385 wfx_sub_1d(ji) = wfx_sub_1d(ji) - rhoic * a_i_1d(ji) * zdum * r1_rdtice 386 ! update remaining mass flux 387 zevap_rema(ji) = zevap_rema(ji) + zdum * rhoic 388 385 389 ! record which layers have disappeared (for bottom melting) 386 390 ! => icount=0 : no layer has vanished … … 389 393 icount(ji,jk) = NINT( rswitch ) 390 394 zh_i(ji,jk) = MAX( 0._wp , zh_i(ji,jk) + zdeltah(ji,jk) ) 391 395 392 396 ! update heat content (J.m-2) and layer thickness 393 397 qh_i_old(ji,jk) = qh_i_old(ji,jk) + zdeltah(ji,jk) * q_i_1d(ji,jk) … … 397 401 ! update ice thickness 398 402 DO ji = kideb, kiut 399 ht_i_1d(ji) = MAX( 0._wp , ht_i_1d(ji) + dh_i_surf(ji) ) 403 ht_i_1d(ji) = MAX( 0._wp , ht_i_1d(ji) + dh_i_surf(ji) + dh_i_sub(ji) ) 404 END DO 405 406 ! remaining "potential" evap is sent to ocean 407 DO ji = kideb, kiut 408 ii = MOD( npb(ji) - 1, jpi ) + 1 ; ij = ( npb(ji) - 1 ) / jpi + 1 409 wfx_err_sub(ii,ij) = wfx_err_sub(ii,ij) - zevap_rema(ji) * a_i_1d(ji) * r1_rdtice ! <=0 (net evap for the ocean in kg.m-2.s-1) 400 410 END DO 401 411 … … 686 696 WHERE( ht_i_1d == 0._wp ) a_i_1d = 0._wp 687 697 688 CALL wrk_dealloc( jpij, zqprec, zq_su, zq_bo, zf_tt, zq_rema, zsnw )689 CALL wrk_dealloc( jpij, zdh_s_mel, zdh_s_pre, zdh_s_sub, zqh_i , zqh_s, zq_s)698 CALL wrk_dealloc( jpij, zqprec, zq_su, zq_bo, zf_tt, zq_rema, zsnw, zevap_rema ) 699 CALL wrk_dealloc( jpij, zdh_s_mel, zdh_s_pre, zdh_s_sub, zqh_i ) 690 700 CALL wrk_dealloc( jpij, nlay_i, zdeltah, zh_i ) 691 701 CALL wrk_dealloc( jpij, nlay_i, icount ) -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limthd_lac.F90
r6403 r6416 75 75 INTEGER :: ii, ij, iter ! - - 76 76 REAL(wp) :: ztmelts, zdv, zfrazb, zweight, zde ! local scalars 77 REAL(wp) :: zgamafr, zvfrx, zvgx, ztaux, ztwogp, zf , zhicol_new! - -77 REAL(wp) :: zgamafr, zvfrx, zvgx, ztaux, ztwogp, zf ! - - 78 78 REAL(wp) :: ztenagm, zvfry, zvgy, ztauy, zvrel2, zfp, zsqcd , zhicrit ! - - 79 LOGICAL :: iterate_frazil ! iterate frazil ice collection thickness80 79 CHARACTER (len = 15) :: fieldid 81 80 … … 108 107 REAL(wp), POINTER, DIMENSION(:,:) :: zsmv_i_1d ! 1-D version of smv_i 109 108 110 REAL(wp), POINTER, DIMENSION(:,:,:) :: ze_i_1d 111 112 REAL(wp), POINTER, DIMENSION(:,:) :: zvrel 113 114 REAL(wp) :: zcai = 1.4e-3_wp 109 REAL(wp), POINTER, DIMENSION(:,:,:) :: ze_i_1d !: 1-D version of e_i 110 111 REAL(wp), POINTER, DIMENSION(:,:) :: zvrel ! relative ice / frazil velocity 112 113 REAL(wp) :: zcai = 1.4e-3_wp ! ice-air drag (clem: should be dependent on coupling/forcing used) 115 114 !!-----------------------------------------------------------------------! 116 115 … … 143 142 !------------------------------------------------------------------------------! 144 143 ! hicol is the thickness of new ice formed in open water 145 ! hicol can be either prescribed (frazswi = 0) 146 ! or computed (frazswi = 1) 144 ! hicol can be either prescribed (frazswi = 0) or computed (frazswi = 1) 147 145 ! Frazil ice forms in open water, is transported by wind 148 146 ! accumulates at the edge of the consolidated ice edge … … 155 153 zvrel(:,:) = 0._wp 156 154 157 ! Default new ice thickness 158 hicol(:,:) = rn_hnewice 155 ! Default new ice thickness 156 WHERE( qlead(:,:) < 0._wp ) ; hicol = rn_hnewice 157 ELSEWHERE ; hicol = 0._wp 158 END WHERE 159 159 160 160 IF( ln_frazil ) THEN … … 182 182 & + vtau_ice(ji ,jj ) * vmask(ji ,jj ,1) ) * 0.5_wp 183 183 ! Square root of wind stress 184 ztenagm = SQRT( SQRT( ztaux **2 + ztauy**2) )184 ztenagm = SQRT( SQRT( ztaux * ztaux + ztauy * ztauy ) ) 185 185 186 186 !--------------------- … … 205 205 zvrel2 = MAX( ( zvfrx - zvgx ) * ( zvfrx - zvgx ) & 206 206 & + ( zvfry - zvgy ) * ( zvfry - zvgy ) , 0.15 * 0.15 ) 207 zvrel(ji,jj) 207 zvrel(ji,jj) = SQRT( zvrel2 ) 208 208 209 209 !--------------------- 210 210 ! Iterative procedure 211 211 !--------------------- 212 hicol(ji,jj) = zhicrit + 0.1 213 hicol(ji,jj) = zhicrit + hicol(ji,jj) & 214 & / ( hicol(ji,jj) * hicol(ji,jj) - zhicrit * zhicrit ) * ztwogp * zvrel2 215 216 !!gm better coding: above: hicol(ji,jj) * hicol(ji,jj) = (zhicrit + 0.1)*(zhicrit + 0.1) 217 !!gm = zhicrit**2 + 0.2*zhicrit +0.01 218 !!gm therefore the 2 lines with hicol can be replaced by 1 line: 219 !!gm hicol(ji,jj) = zhicrit + (zhicrit + 0.1) / ( 0.2 * zhicrit + 0.01 ) * ztwogp * zvrel2 220 !!gm further more (zhicrit + 0.1)/(0.2 * zhicrit + 0.01 )*ztwogp can be computed one for all outside the DO loop 212 hicol(ji,jj) = zhicrit + ( zhicrit + 0.1 ) & 213 & / ( ( zhicrit + 0.1 ) * ( zhicrit + 0.1 ) - zhicrit * zhicrit ) * ztwogp * zvrel2 221 214 222 215 iter = 1 223 iterate_frazil = .true. 224 225 DO WHILE ( iter < 100 .AND. iterate_frazil ) 226 zf = ( hicol(ji,jj) - zhicrit ) * ( hicol(ji,jj)**2 - zhicrit**2 ) & 227 - hicol(ji,jj) * zhicrit * ztwogp * zvrel2 228 zfp = ( hicol(ji,jj) - zhicrit ) * ( 3.0*hicol(ji,jj) + zhicrit ) & 229 - zhicrit * ztwogp * zvrel2 230 zhicol_new = hicol(ji,jj) - zf/zfp 231 hicol(ji,jj) = zhicol_new 232 216 DO WHILE ( iter < 20 ) 217 zf = ( hicol(ji,jj) - zhicrit ) * ( hicol(ji,jj) * hicol(ji,jj) - zhicrit * zhicrit ) - & 218 & hicol(ji,jj) * zhicrit * ztwogp * zvrel2 219 zfp = ( hicol(ji,jj) - zhicrit ) * ( 3.0 * hicol(ji,jj) + zhicrit ) - zhicrit * ztwogp * zvrel2 220 221 hicol(ji,jj) = hicol(ji,jj) - zf/zfp 233 222 iter = iter + 1 234 235 END DO ! do while 223 END DO 236 224 237 225 ENDIF ! end of selection of pixels where ice forms 238 226 239 END DO ! loop on ji ends240 END DO ! loop on jj ends241 !242 CALL lbc_lnk( zvrel(:,:), 'T', 1. )243 CALL lbc_lnk( hicol(:,:), 'T', 1. )227 END DO 228 END DO 229 ! 230 CALL lbc_lnk( zvrel(:,:), 'T', 1. ) 231 CALL lbc_lnk( hicol(:,:), 'T', 1. ) 244 232 245 233 ENDIF ! End of computation of frazil ice collection thickness … … 282 270 ! Move from 2-D to 1-D vectors 283 271 !------------------------------ 284 ! If ocean gains heat do nothing 285 ! 0therwise compute new ice formation 272 ! If ocean gains heat do nothing. Otherwise compute new ice formation 286 273 287 274 IF ( nbpac > 0 ) THEN … … 317 304 zv_b(1:nbpac,:) = zv_i_1d(1:nbpac,:) 318 305 za_b(1:nbpac,:) = za_i_1d(1:nbpac,:) 306 319 307 !---------------------- 320 308 ! Thickness of new ice 321 309 !---------------------- 322 DO ji = 1, nbpac 323 zh_newice(ji) = rn_hnewice 324 END DO 325 IF( ln_frazil ) zh_newice(1:nbpac) = hicol_1d(1:nbpac) 310 zh_newice(1:nbpac) = hicol_1d(1:nbpac) 326 311 327 312 !---------------------- … … 347 332 DO ji = 1, nbpac 348 333 ztmelts = - tmut * zs_newice(ji) + rt0 ! Melting point (K) 349 ze_newice(ji) = rhoic * ( cpic * ( ztmelts - t_bo_1d(ji) ) &334 ze_newice(ji) = rhoic * ( cpic * ( ztmelts - t_bo_1d(ji) ) & 350 335 & + lfus * ( 1.0 - ( ztmelts - rt0 ) / MIN( t_bo_1d(ji) - rt0, -epsi10 ) ) & 351 336 & - rcp * ( ztmelts - rt0 ) ) … … 385 370 ! salt flux 386 371 sfx_opw_1d(ji) = sfx_opw_1d(ji) - zv_newice(ji) * rhoic * zs_newice(ji) * r1_rdtice 387 372 END DO 373 374 zv_frazb(:) = 0._wp 375 IF( ln_frazil ) THEN 388 376 ! A fraction zfrazb of frazil ice is accreted at the ice bottom 389 rswitch = 1._wp - MAX( 0._wp, SIGN( 1._wp , - zat_i_1d(ji) ) ) 390 zfrazb = rswitch * ( TANH ( rn_Cfrazb * ( zvrel_1d(ji) - rn_vfrazb ) ) + 1.0 ) * 0.5 * rn_maxfrazb 391 zv_frazb(ji) = zfrazb * zv_newice(ji) 392 zv_newice(ji) = ( 1.0 - zfrazb ) * zv_newice(ji) 393 END DO 394 377 DO ji = 1, nbpac 378 rswitch = 1._wp - MAX( 0._wp, SIGN( 1._wp , - zat_i_1d(ji) ) ) 379 zfrazb = rswitch * ( TANH( rn_Cfrazb * ( zvrel_1d(ji) - rn_vfrazb ) ) + 1.0 ) * 0.5 * rn_maxfrazb 380 zv_frazb(ji) = zfrazb * zv_newice(ji) 381 zv_newice(ji) = ( 1.0 - zfrazb ) * zv_newice(ji) 382 END DO 383 END IF 384 395 385 !----------------- 396 386 ! Area of new ice … … 444 434 jl = jcat(ji) 445 435 rswitch = MAX( 0._wp, SIGN( 1._wp , zv_i_1d(ji,jl) - epsi20 ) ) 446 ze_i_1d(ji,jk,jl) = zswinew(ji) * ze_newice(ji) + 436 ze_i_1d(ji,jk,jl) = zswinew(ji) * ze_newice(ji) + & 447 437 & ( 1.0 - zswinew(ji) ) * ( ze_newice(ji) * zv_newice(ji) + ze_i_1d(ji,jk,jl) * zv_b(ji,jl) ) & 448 438 & * rswitch / MAX( zv_i_1d(ji,jl), epsi20 ) -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limvar.F90
r5202 r6416 163 163 rswitch = MAX( 0._wp , SIGN( 1._wp, a_i(ji,jj,jl) - epsi20 ) ) !0 if no ice and 1 if yes 164 164 ht_i(ji,jj,jl) = v_i (ji,jj,jl) / MAX( a_i(ji,jj,jl) , epsi20 ) * rswitch 165 END DO 166 END DO 167 END DO 168 ! Force the upper limit of ht_i to always be < hi_max (99 m). 169 DO jj = 1, jpj 170 DO ji = 1, jpi 171 rswitch = MAX( 0._wp , SIGN( 1._wp, ht_i(ji,jj,jpl) - epsi20 ) ) 172 ht_i(ji,jj,jpl) = MIN( ht_i(ji,jj,jpl) , hi_max(jpl) ) 173 a_i (ji,jj,jpl) = v_i(ji,jj,jpl) / MAX( ht_i(ji,jj,jpl) , epsi20 ) * rswitch 174 END DO 175 END DO 176 177 DO jl = 1, jpl 178 DO jj = 1, jpj 179 DO ji = 1, jpi 180 rswitch = MAX( 0._wp , SIGN( 1._wp, a_i(ji,jj,jl) - epsi20 ) ) !0 if no ice and 1 if yes 165 181 ht_s(ji,jj,jl) = v_s (ji,jj,jl) / MAX( a_i(ji,jj,jl) , epsi20 ) * rswitch 166 182 o_i(ji,jj,jl) = oa_i(ji,jj,jl) / MAX( a_i(ji,jj,jl) , epsi20 ) * rswitch … … 168 184 END DO 169 185 END DO 170 186 171 187 IF( nn_icesal == 2 )THEN 172 188 DO jl = 1, jpl -
trunk/NEMOGCM/NEMO/LIM_SRC_3/limwri.F90
r6140 r6416 154 154 ENDIF 155 155 156 IF ( iom_use( "icecolf" ) ) THEN 157 DO jj = 1, jpj 158 DO ji = 1, jpi 159 rswitch = MAX( 0._wp , SIGN( 1._wp , at_i(ji,jj) ) ) 160 z2d(ji,jj) = hicol(ji,jj) * rswitch 161 END DO 162 END DO 163 CALL iom_put( "icecolf" , z2d ) ! frazil ice collection thickness 164 ENDIF 165 156 IF ( iom_use( "icecolf" ) ) CALL iom_put( "icecolf", hicol ) ! frazil ice collection thickness 157 166 158 CALL iom_put( "isst" , sst_m ) ! sea surface temperature 167 159 CALL iom_put( "isss" , sss_m ) ! sea surface salinity … … 233 225 CALL iom_put ('hfxspr' , hfx_spr(:,:) ) ! Heat content of snow precip 234 226 227 IF ( iom_use( "vfxthin" ) ) THEN ! ice production for open water + thin ice (<20cm) => comparable to observations 228 DO jj = 1, jpj 229 DO ji = 1, jpi 230 z2d(ji,jj) = vt_i(ji,jj) / MAX( at_i(ji,jj), epsi06 ) * zswi(ji,jj) ! mean ice thickness 231 END DO 232 END DO 233 WHERE( z2d(:,:) < 0.2 .AND. z2d(:,:) > 0. ) ; z2da = wfx_bog 234 ELSEWHERE ; z2da = 0._wp 235 END WHERE 236 CALL iom_put( "vfxthin", ( wfx_opw + z2da ) * ztmp ) 237 ENDIF 238 235 239 !-------------------------------- 236 240 ! Output values for each category -
trunk/NEMOGCM/NEMO/LIM_SRC_3/thd_ice.F90
r6403 r6416 45 45 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: qns_ice_1d 46 46 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: t_bo_1d 47 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: rn_amax_1d 47 48 48 49 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: hfx_sum_1d … … 51 52 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: hfx_dif_1d 52 53 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: hfx_opw_1d 53 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: rn_amax_1d54 54 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: hfx_snw_1d 55 55 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: hfx_err_1d … … 84 84 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: sfx_res_1d 85 85 86 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: sfx_sub_1d 87 86 88 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: sprecip_1d !: <==> the 2D sprecip 87 89 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: frld_1d !: <==> the 2D frld … … 92 94 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: evap_ice_1d !: <==> the 2D evap_ice 93 95 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: qprec_ice_1d !: <==> the 2D qprec_ice 96 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: qevap_ice_1d !: <==> the 3D qevap_ice 94 97 ! ! to reintegrate longwave flux inside the ice thermodynamics 95 98 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: i0 !: fraction of radiation transmitted to the ice … … 108 111 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: dh_s_tot !: Snow accretion/ablation [m] 109 112 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: dh_i_surf !: Ice surface accretion/ablation [m] 113 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: dh_i_sub !: Ice surface sublimation [m] 110 114 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: dh_i_bott !: Ice bottom accretion/ablation [m] 111 115 REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: dh_snowice !: Snow ice formation [m of ice] … … 155 159 & wfx_sum_1d(jpij) , wfx_sni_1d (jpij) , wfx_opw_1d (jpij) , wfx_res_1d(jpij) , & 156 160 & dqns_ice_1d(jpij) , evap_ice_1d (jpij), & 157 & qprec_ice_1d(jpij), i0 (jpij) ,&161 & qprec_ice_1d(jpij), qevap_ice_1d(jpij), i0 (jpij) , & 158 162 & sfx_bri_1d (jpij) , sfx_bog_1d (jpij) , sfx_bom_1d (jpij) , sfx_sum_1d (jpij), & 159 & sfx_sni_1d (jpij) , sfx_opw_1d (jpij) , sfx_res_1d (jpij) , 163 & sfx_sni_1d (jpij) , sfx_opw_1d (jpij) , sfx_res_1d (jpij) , sfx_sub_1d (jpij), & 160 164 & dsm_i_fl_1d(jpij) , dsm_i_gd_1d(jpij) , dsm_i_se_1d(jpij) , & 161 165 & dsm_i_si_1d(jpij) , hicol_1d (jpij) , STAT=ierr(2) ) … … 163 167 ALLOCATE( t_su_1d (jpij) , a_i_1d (jpij) , ht_i_1d (jpij) , & 164 168 & ht_s_1d (jpij) , fc_su (jpij) , fc_bo_i (jpij) , & 165 & dh_s_tot (jpij) , dh_i_surf(jpij) , dh_i_ bott(jpij) , &166 & dh_ snowice(jpij) , sm_i_1d (jpij) , s_i_new (jpij) , &167 & t_s_1d(jpij,nlay_s) , t_i_1d(jpij,nlay_i) , s_i_1d(jpij,nlay_i) , &168 & q_i_1d(jpij,nlay_i+1) , q_s_1d(jpij,nlay_s) , &169 & dh_s_tot (jpij) , dh_i_surf(jpij) , dh_i_sub (jpij) , & 170 & dh_i_bott (jpij) ,dh_snowice(jpij) , sm_i_1d (jpij) , s_i_new (jpij) , & 171 & t_s_1d(jpij,nlay_s) , t_i_1d(jpij,nlay_i) , s_i_1d(jpij,nlay_i) , & 172 & q_i_1d(jpij,nlay_i+1) , q_s_1d(jpij,nlay_s) , & 169 173 & qh_i_old(jpij,0:nlay_i+1), h_i_old(jpij,0:nlay_i+1) , STAT=ierr(3)) 170 174 !
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