[825] | 1 | MODULE limistate |
---|
| 2 | !!====================================================================== |
---|
| 3 | !! *** MODULE limistate *** |
---|
| 4 | !! Initialisation of diagnostics ice variables |
---|
| 5 | !!====================================================================== |
---|
[2528] | 6 | !! History : 2.0 ! 2004-01 (C. Ethe, G. Madec) Original code |
---|
[4161] | 7 | !! 4.0 ! 2011-02 (G. Madec) dynamical allocation |
---|
[4990] | 8 | !! - ! 2014 (C. Rousset) add N/S initializations |
---|
[2528] | 9 | !!---------------------------------------------------------------------- |
---|
[825] | 10 | #if defined key_lim3 |
---|
| 11 | !!---------------------------------------------------------------------- |
---|
[834] | 12 | !! 'key_lim3' : LIM3 sea-ice model |
---|
[825] | 13 | !!---------------------------------------------------------------------- |
---|
| 14 | !! lim_istate : Initialisation of diagnostics ice variables |
---|
| 15 | !! lim_istate_init : initialization of ice state and namelist read |
---|
| 16 | !!---------------------------------------------------------------------- |
---|
[2528] | 17 | USE phycst ! physical constant |
---|
| 18 | USE oce ! dynamics and tracers variables |
---|
| 19 | USE dom_oce ! ocean domain |
---|
| 20 | USE sbc_oce ! Surface boundary condition: ocean fields |
---|
[4161] | 21 | USE sbc_ice ! Surface boundary condition: ice fields |
---|
[2528] | 22 | USE eosbn2 ! equation of state |
---|
| 23 | USE ice ! sea-ice variables |
---|
[4161] | 24 | USE par_oce ! ocean parameters |
---|
[2528] | 25 | USE dom_ice ! sea-ice domain |
---|
| 26 | USE in_out_manager ! I/O manager |
---|
[2715] | 27 | USE lib_mpp ! MPP library |
---|
[4161] | 28 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
---|
[3294] | 29 | USE wrk_nemo ! work arrays |
---|
[6808] | 30 | USE fldread ! read input fields |
---|
| 31 | USE iom |
---|
[825] | 32 | |
---|
| 33 | IMPLICIT NONE |
---|
| 34 | PRIVATE |
---|
| 35 | |
---|
[2528] | 36 | PUBLIC lim_istate ! routine called by lim_init.F90 |
---|
[825] | 37 | |
---|
[4166] | 38 | ! !!** init namelist (namiceini) ** |
---|
[5123] | 39 | REAL(wp) :: rn_thres_sst ! threshold water temperature for initial sea ice |
---|
| 40 | REAL(wp) :: rn_hts_ini_n ! initial snow thickness in the north |
---|
| 41 | REAL(wp) :: rn_hts_ini_s ! initial snow thickness in the south |
---|
| 42 | REAL(wp) :: rn_hti_ini_n ! initial ice thickness in the north |
---|
| 43 | REAL(wp) :: rn_hti_ini_s ! initial ice thickness in the south |
---|
| 44 | REAL(wp) :: rn_ati_ini_n ! initial leads area in the north |
---|
| 45 | REAL(wp) :: rn_ati_ini_s ! initial leads area in the south |
---|
| 46 | REAL(wp) :: rn_smi_ini_n ! initial salinity |
---|
| 47 | REAL(wp) :: rn_smi_ini_s ! initial salinity |
---|
| 48 | REAL(wp) :: rn_tmi_ini_n ! initial temperature |
---|
| 49 | REAL(wp) :: rn_tmi_ini_s ! initial temperature |
---|
[4166] | 50 | |
---|
[6808] | 51 | INTEGER , PARAMETER :: jpfldi = 6 ! maximum number of files to read |
---|
| 52 | INTEGER , PARAMETER :: jp_hti = 1 ! index of ice thickness (m) at T-point |
---|
| 53 | INTEGER , PARAMETER :: jp_hts = 2 ! index of snow thicknes (m) at T-point |
---|
| 54 | INTEGER , PARAMETER :: jp_ati = 3 ! index of ice fraction (%) at T-point |
---|
| 55 | INTEGER , PARAMETER :: jp_tsu = 4 ! index of ice surface temp (K) at T-point |
---|
| 56 | INTEGER , PARAMETER :: jp_tmi = 5 ! index of ice temp at T-point |
---|
| 57 | INTEGER , PARAMETER :: jp_smi = 6 ! index of ice sali at T-point |
---|
| 58 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: si ! structure of input fields (file informations, fields read) |
---|
| 59 | |
---|
| 60 | LOGICAL :: ln_iceini ! initialization or not |
---|
| 61 | LOGICAL :: ln_iceini_file ! Ice initialization state from 2D netcdf file |
---|
[825] | 62 | !!---------------------------------------------------------------------- |
---|
[4161] | 63 | !! LIM 3.0, UCL-LOCEAN-IPSL (2008) |
---|
[1156] | 64 | !! $Id$ |
---|
[4161] | 65 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
---|
[825] | 66 | !!---------------------------------------------------------------------- |
---|
| 67 | CONTAINS |
---|
| 68 | |
---|
| 69 | SUBROUTINE lim_istate |
---|
| 70 | !!------------------------------------------------------------------- |
---|
| 71 | !! *** ROUTINE lim_istate *** |
---|
| 72 | !! |
---|
| 73 | !! ** Purpose : defined the sea-ice initial state |
---|
| 74 | !! |
---|
[4161] | 75 | !! ** Method : |
---|
| 76 | !! This routine will put some ice where ocean |
---|
| 77 | !! is at the freezing point, then fill in ice |
---|
| 78 | !! state variables using prescribed initial |
---|
| 79 | !! values in the namelist |
---|
| 80 | !! |
---|
| 81 | !! ** Steps : |
---|
| 82 | !! 1) Read namelist |
---|
| 83 | !! 2) Basal temperature; ice and hemisphere masks |
---|
| 84 | !! 3) Fill in the ice thickness distribution using gaussian |
---|
| 85 | !! 4) Fill in space-dependent arrays for state variables |
---|
| 86 | !! 5) Diagnostic arrays |
---|
| 87 | !! 6) Lateral boundary conditions |
---|
| 88 | !! |
---|
[4333] | 89 | !! ** Notes : o_i, t_su, t_s, t_i, s_i must be filled everywhere, even |
---|
[4990] | 90 | !! where there is no ice (clem: I do not know why, is it mandatory?) |
---|
[4333] | 91 | !! |
---|
[4161] | 92 | !! History : |
---|
| 93 | !! 2.0 ! 01-04 (C. Ethe, G. Madec) Original code |
---|
| 94 | !! 3.0 ! 2007 (M. Vancoppenolle) Rewrite for ice cats |
---|
| 95 | !! 4.0 ! 09-11 (M. Vancoppenolle) Enhanced version for ice cats |
---|
| 96 | !!-------------------------------------------------------------------- |
---|
| 97 | |
---|
| 98 | !! * Local variables |
---|
| 99 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
---|
[5123] | 100 | REAL(wp) :: ztmelts, zdh |
---|
[4161] | 101 | INTEGER :: i_hemis, i_fill, jl0 |
---|
[6808] | 102 | REAL(wp) :: ztest_1, ztest_2, ztest_3, ztest_4, ztests, zsigma, zarg, zA, zV, zA_cons, zV_cons, zconv |
---|
[4688] | 103 | REAL(wp), POINTER, DIMENSION(:,:) :: zswitch ! ice indicator |
---|
[6808] | 104 | REAL(wp), POINTER, DIMENSION(:,:) :: zht_i_ini, zat_i_ini, zvt_i_ini !data from namelist or nc file |
---|
| 105 | REAL(wp), POINTER, DIMENSION(:,:) :: zts_u_ini, zht_s_ini, zsm_i_ini, ztm_i_ini !data from namelist or nc file |
---|
| 106 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zh_i_ini, za_i_ini, zv_i_ini !data by cattegories to fill |
---|
[825] | 107 | !-------------------------------------------------------------------- |
---|
[921] | 108 | |
---|
[6808] | 109 | CALL wrk_alloc( jpi, jpj, jpl, zh_i_ini, za_i_ini, zv_i_ini ) |
---|
| 110 | CALL wrk_alloc( jpi, jpj, zht_i_ini, zat_i_ini, zvt_i_ini, zts_u_ini, zht_s_ini, zsm_i_ini, ztm_i_ini ) |
---|
| 111 | CALL wrk_alloc( jpi, jpj, zswitch ) |
---|
[2715] | 112 | |
---|
[4161] | 113 | IF(lwp) WRITE(numout,*) |
---|
| 114 | IF(lwp) WRITE(numout,*) 'lim_istate : Ice initialization ' |
---|
| 115 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' |
---|
| 116 | |
---|
[825] | 117 | !-------------------------------------------------------------------- |
---|
[4161] | 118 | ! 1) Read namelist |
---|
[825] | 119 | !-------------------------------------------------------------------- |
---|
| 120 | |
---|
| 121 | CALL lim_istate_init ! reading the initials parameters of the ice |
---|
| 122 | |
---|
[4688] | 123 | ! surface temperature |
---|
| 124 | DO jl = 1, jpl ! loop over categories |
---|
[5123] | 125 | t_su (:,:,jl) = rt0 * tmask(:,:,1) |
---|
| 126 | tn_ice(:,:,jl) = rt0 * tmask(:,:,1) |
---|
[4688] | 127 | END DO |
---|
| 128 | |
---|
[4990] | 129 | ! basal temperature (considered at freezing point) |
---|
[5541] | 130 | CALL eos_fzp( sss_m(:,:), t_bo(:,:) ) |
---|
| 131 | t_bo(:,:) = ( t_bo(:,:) + rt0 ) * tmask(:,:,1) |
---|
[4990] | 132 | |
---|
[6808] | 133 | |
---|
[5123] | 134 | IF( ln_iceini ) THEN |
---|
[4688] | 135 | |
---|
[6808] | 136 | !-------------------------------------------------------------------- |
---|
| 137 | ! 2) Basal temperature, ice mask and hemispheric index |
---|
| 138 | !-------------------------------------------------------------------- |
---|
[4990] | 139 | |
---|
[6808] | 140 | DO jj = 1, jpj ! ice if sst <= t-freez + ttest |
---|
| 141 | DO ji = 1, jpi |
---|
| 142 | IF( ( sst_m(ji,jj) - ( t_bo(ji,jj) - rt0 ) ) * tmask(ji,jj,1) >= rn_thres_sst ) THEN |
---|
| 143 | zswitch(ji,jj) = 0._wp * tmask(ji,jj,1) ! no ice |
---|
| 144 | ELSE |
---|
| 145 | zswitch(ji,jj) = 1._wp * tmask(ji,jj,1) ! ice |
---|
| 146 | ENDIF |
---|
| 147 | END DO |
---|
[1037] | 148 | END DO |
---|
| 149 | |
---|
[6808] | 150 | !-------------------------------------------------------------------- |
---|
| 151 | ! 3) Initialization of sea ice state variables |
---|
| 152 | !-------------------------------------------------------------------- |
---|
| 153 | IF( ln_iceini_file )THEN |
---|
[1037] | 154 | |
---|
[6808] | 155 | zht_i_ini(:,:) = si(jp_hti)%fnow(:,:,1) |
---|
| 156 | zht_s_ini(:,:) = si(jp_hts)%fnow(:,:,1) |
---|
| 157 | zat_i_ini(:,:) = si(jp_ati)%fnow(:,:,1) |
---|
| 158 | zts_u_ini(:,:) = si(jp_tsu)%fnow(:,:,1) |
---|
| 159 | ztm_i_ini(:,:) = si(jp_tmi)%fnow(:,:,1) |
---|
| 160 | zsm_i_ini(:,:) = si(jp_smi)%fnow(:,:,1) |
---|
[825] | 161 | |
---|
[6808] | 162 | ELSE ! ln_iceini_file = F |
---|
[825] | 163 | |
---|
[6808] | 164 | !----------------------------- |
---|
| 165 | ! 3.1) Hemisphere-dependent arrays |
---|
| 166 | !----------------------------- |
---|
| 167 | ! assign initial thickness, concentration, snow depth and salinity to an hemisphere-dependent array |
---|
| 168 | DO jj = 1, jpj |
---|
| 169 | DO ji = 1, jpi |
---|
| 170 | IF( fcor(ji,jj) >= 0._wp ) THEN |
---|
| 171 | zht_i_ini(ji,jj) = rn_hti_ini_n |
---|
| 172 | zht_s_ini(ji,jj) = rn_hts_ini_n |
---|
| 173 | zat_i_ini(ji,jj) = rn_ati_ini_n |
---|
| 174 | zts_u_ini(ji,jj) = rn_tmi_ini_n |
---|
| 175 | zsm_i_ini(ji,jj) = rn_smi_ini_n |
---|
| 176 | ztm_i_ini(ji,jj) = rn_tmi_ini_n |
---|
| 177 | ELSE |
---|
| 178 | zht_i_ini(ji,jj) = rn_hti_ini_s |
---|
| 179 | zht_s_ini(ji,jj) = rn_hts_ini_s |
---|
| 180 | zat_i_ini(ji,jj) = rn_ati_ini_s |
---|
| 181 | zts_u_ini(ji,jj) = rn_tmi_ini_s |
---|
| 182 | zsm_i_ini(ji,jj) = rn_smi_ini_s |
---|
| 183 | ztm_i_ini(ji,jj) = rn_tmi_ini_s |
---|
| 184 | ENDIF |
---|
| 185 | END DO |
---|
| 186 | END DO |
---|
[825] | 187 | |
---|
[6808] | 188 | ENDIF ! ln_iceini_file |
---|
[4688] | 189 | |
---|
[6808] | 190 | zvt_i_ini(:,:) = zht_i_ini(:,:) * zat_i_ini(:,:) ! ice volume |
---|
[825] | 191 | |
---|
[6808] | 192 | !--------------------------------------------------------------------- |
---|
| 193 | ! 3.2) Distribute ice concentration and thickness into the categories |
---|
| 194 | !--------------------------------------------------------------------- |
---|
| 195 | ! a gaussian distribution for ice concentration is used |
---|
| 196 | ! then we check whether the distribution fullfills |
---|
| 197 | ! volume and area conservation, positivity and ice categories bounds |
---|
| 198 | zh_i_ini(:,:,:) = 0._wp |
---|
| 199 | za_i_ini(:,:,:) = 0._wp |
---|
| 200 | zv_i_ini(:,:,:) = 0._wp |
---|
[825] | 201 | |
---|
[6808] | 202 | DO jj = 1, jpj |
---|
| 203 | DO ji = 1, jpi |
---|
[825] | 204 | |
---|
[6808] | 205 | IF( zat_i_ini(ji,jj) > 0._wp .AND. zht_i_ini(ji,jj) > 0._wp )THEN |
---|
[825] | 206 | |
---|
[6808] | 207 | ztest_1 = 0 ; ztest_2 = 0 ; ztest_3 = 0 ; ztest_4 = 0 |
---|
| 208 | ! ztests = 0 |
---|
| 209 | |
---|
| 210 | DO i_fill = jpl, 1, -1 |
---|
| 211 | |
---|
| 212 | ! IF( ztests .NE. 4 ) THEN |
---|
| 213 | IF ( ( ztest_1 + ztest_2 + ztest_3 + ztest_4 ) .NE. 4 ) THEN |
---|
| 214 | !---------------------------- |
---|
| 215 | ! fill the i_fill categories |
---|
| 216 | !---------------------------- |
---|
| 217 | ! *** 1 category to fill |
---|
| 218 | IF ( i_fill .EQ. 1 ) THEN |
---|
| 219 | zh_i_ini(ji,jj, 1) = zht_i_ini(ji,jj) |
---|
| 220 | za_i_ini(ji,jj, 1) = zat_i_ini(ji,jj) |
---|
| 221 | zh_i_ini(ji,jj,2:jpl) = 0._wp |
---|
| 222 | za_i_ini(ji,jj,2:jpl) = 0._wp |
---|
| 223 | ELSE |
---|
| 224 | |
---|
| 225 | ! *** >1 categores to fill |
---|
| 226 | !--- Ice thicknesses in the i_fill - 1 first categories |
---|
| 227 | DO jl = 1, i_fill - 1 |
---|
| 228 | zh_i_ini(ji,jj,jl) = hi_mean(jl) |
---|
| 229 | END DO |
---|
[4688] | 230 | |
---|
[6808] | 231 | !--- jl0: most likely index where cc will be maximum |
---|
| 232 | DO jl = 1, jpl |
---|
| 233 | IF ( ( zht_i_ini(ji,jj) > hi_max(jl-1) ) .AND. & |
---|
| 234 | & ( zht_i_ini(ji,jj) <= hi_max(jl) ) ) THEN |
---|
| 235 | jl0 = jl |
---|
| 236 | ENDIF |
---|
| 237 | END DO |
---|
| 238 | jl0 = MIN(jl0, i_fill) |
---|
[4688] | 239 | |
---|
[6808] | 240 | !--- Concentrations |
---|
| 241 | za_i_ini(ji,jj,jl0) = zat_i_ini(ji,jj) / SQRT(REAL(jpl)) |
---|
| 242 | DO jl = 1, i_fill - 1 |
---|
| 243 | IF( jl .NE. jl0 )THEN |
---|
| 244 | zsigma = 0.5 * zht_i_ini(ji,jj) |
---|
| 245 | zarg = ( zh_i_ini(ji,jj,jl) - zht_i_ini(ji,jj) ) / zsigma |
---|
| 246 | za_i_ini(ji,jj,jl) = za_i_ini(ji,jj,jl0) * EXP(-zarg**2) |
---|
| 247 | ENDIF |
---|
| 248 | END DO |
---|
[4688] | 249 | |
---|
[6808] | 250 | zA = 0. ! sum of the areas in the jpl categories |
---|
| 251 | DO jl = 1, i_fill - 1 |
---|
| 252 | zA = zA + za_i_ini(ji,jj,jl) |
---|
| 253 | END DO |
---|
| 254 | za_i_ini(ji,jj,i_fill) = zat_i_ini(ji,jj) - zA ! ice conc in the last category |
---|
| 255 | IF ( i_fill .LT. jpl ) za_i_ini(ji,jj,i_fill+1:jpl) = 0._wp |
---|
[4161] | 256 | |
---|
[6808] | 257 | !--- Ice thickness in the last category |
---|
| 258 | zV = 0. ! sum of the volumes of the N-1 categories |
---|
| 259 | DO jl = 1, i_fill - 1 |
---|
| 260 | zV = zV + za_i_ini(ji,jj,jl)*zh_i_ini(ji,jj,jl) |
---|
| 261 | END DO |
---|
| 262 | zh_i_ini(ji,jj,i_fill) = ( zvt_i_ini(ji,jj) - zV ) / za_i_ini(ji,jj,i_fill) |
---|
| 263 | IF ( i_fill .LT. jpl ) zh_i_ini(ji,jj,i_fill+1:jpl) = 0._wp |
---|
[825] | 264 | |
---|
[6808] | 265 | !--- volumes |
---|
| 266 | zv_i_ini(ji,jj,:) = za_i_ini(ji,jj,:) * zh_i_ini(ji,jj,:) |
---|
| 267 | IF ( i_fill .LT. jpl ) zv_i_ini(ji,jj,i_fill+1:jpl) = 0._wp |
---|
[921] | 268 | |
---|
[6808] | 269 | ENDIF ! i_fill |
---|
[825] | 270 | |
---|
[6808] | 271 | !--------------------- |
---|
| 272 | ! Compatibility tests |
---|
| 273 | !--------------------- |
---|
| 274 | ! Test 1: area conservation |
---|
| 275 | zA_cons = SUM(za_i_ini(ji,jj,:)) ; zconv = ABS(zat_i_ini(ji,jj) - zA_cons ) |
---|
| 276 | IF ( zconv .LT. 1.0e-6 ) THEN |
---|
| 277 | ztest_1 = 1 |
---|
| 278 | ELSE |
---|
| 279 | !this write is useful |
---|
| 280 | IF(lwp) WRITE(numout,*) ' * TEST1 AREA NOT CONSERVED *** zA_cons = ', zA_cons,' zat_i_ini = ',zat_i_ini(ji,jj) |
---|
| 281 | ztest_1 = 0 |
---|
| 282 | ENDIF |
---|
[825] | 283 | |
---|
[6808] | 284 | ! Test 2: volume conservation |
---|
| 285 | zV_cons = SUM(zv_i_ini(ji,jj,:)) |
---|
| 286 | zconv = ABS(zvt_i_ini(ji,jj) - zV_cons) |
---|
[825] | 287 | |
---|
[6808] | 288 | IF( zconv .LT. 1.0e-6 ) THEN |
---|
| 289 | ztest_2 = 1 |
---|
| 290 | ELSE |
---|
| 291 | !this write is useful |
---|
| 292 | IF(lwp) WRITE(numout,*) ' * TEST2 VOLUME NOT CONSERVED *** zV_cons = ', zV_cons, & |
---|
| 293 | ' zvt_i_ini = ', zvt_i_ini(ji,jj) |
---|
| 294 | ztest_2 = 0 |
---|
| 295 | ENDIF |
---|
[825] | 296 | |
---|
[6808] | 297 | ! Test 3: thickness of the last category is in-bounds ? |
---|
| 298 | IF ( zh_i_ini(ji,jj,i_fill) > hi_max(i_fill-1) ) THEN |
---|
| 299 | ztest_3 = 1 |
---|
| 300 | ELSE |
---|
| 301 | ! this write is useful |
---|
| 302 | IF(lwp) WRITE(numout,*) ' * TEST 3 THICKNESS OF THE LAST CATEGORY OUT OF BOUNDS *** zh_i_ini(ji,jj,i_fill) = ', & |
---|
| 303 | zh_i_ini(ji,jj,i_fill), ' hi_max(jpl-1) = ', hi_max(i_fill-1) |
---|
| 304 | IF(lwp) WRITE(numout,*) ' ji,jj,i_fill ',ji,jj,i_fill |
---|
| 305 | IF(lwp) WRITE(numout,*) 'zht_i_ini ',zht_i_ini(ji,jj) |
---|
| 306 | ztest_3 = 0 |
---|
| 307 | ENDIF |
---|
[825] | 308 | |
---|
[6808] | 309 | ! Test 4: positivity of ice concentrations |
---|
| 310 | ztest_4 = 1 |
---|
| 311 | DO jl = 1, jpl |
---|
| 312 | IF ( za_i_ini(ji,jj,jl) .LT. 0._wp ) THEN |
---|
| 313 | ! this write is useful |
---|
| 314 | IF(lwp) WRITE(numout,*) ' * TEST 4 POSITIVITY NOT OK FOR CAT ', jl, ' WITH A = ', za_i_ini(ji,jj,jl) |
---|
| 315 | ztest_4 = 0 |
---|
| 316 | ENDIF |
---|
| 317 | END DO |
---|
[825] | 318 | |
---|
[6808] | 319 | ENDIF ! ztest_1 + ztest_2 + ztest_3 + ztest_4 |
---|
[4161] | 320 | |
---|
[6808] | 321 | ztests = ztest_1 + ztest_2 + ztest_3 + ztest_4 |
---|
[825] | 322 | |
---|
[6808] | 323 | END DO ! i_fill |
---|
[825] | 324 | |
---|
[6808] | 325 | IF(lwp) THEN |
---|
| 326 | WRITE(numout,*) ' ztests : ', ztests |
---|
| 327 | IF( ztests .NE. 4 )THEN |
---|
| 328 | WRITE(numout,*) |
---|
| 329 | WRITE(numout,*) ' !!!! ALERT !!! ' |
---|
| 330 | WRITE(numout,*) ' !!!! Something is wrong in the LIM3 initialization procedure ' |
---|
| 331 | WRITE(numout,*) |
---|
| 332 | WRITE(numout,*) ' *** ztests is not equal to 4 ' |
---|
| 333 | WRITE(numout,*) ' *** ztest_i (i=1,4) = ', ztest_1, ztest_2, ztest_3, ztest_4 |
---|
| 334 | WRITE(numout,*) ' zat_i_ini : ', zat_i_ini(ji,jj) |
---|
| 335 | WRITE(numout,*) ' zht_i_ini : ', zht_i_ini(ji,jj) |
---|
| 336 | ENDIF ! ztests .NE. 4 |
---|
| 337 | ENDIF |
---|
[4161] | 338 | |
---|
[6808] | 339 | ENDIF ! zat_i_ini(ji,jj) > 0._wp .AND. zhm_i_ini(ji,jj) > 0._wp |
---|
[825] | 340 | |
---|
[6808] | 341 | ENDDO |
---|
| 342 | ENDDO |
---|
[825] | 343 | |
---|
[6808] | 344 | !--------------------------------------------------------------------- |
---|
| 345 | ! 3.3) Space-dependent arrays for ice state variables |
---|
| 346 | !--------------------------------------------------------------------- |
---|
[4333] | 347 | |
---|
[6808] | 348 | ! Ice concentration, thickness and volume, ice salinity, ice age, surface temperature |
---|
| 349 | DO jl = 1, jpl ! loop over categories |
---|
| 350 | DO jj = 1, jpj |
---|
| 351 | DO ji = 1, jpi |
---|
| 352 | a_i(ji,jj,jl) = zswitch(ji,jj) * za_i_ini(ji,jj,jl) ! concentration |
---|
| 353 | ht_i(ji,jj,jl) = zswitch(ji,jj) * zh_i_ini(ji,jj,jl) ! ice thickness |
---|
| 354 | sm_i(ji,jj,jl) = zswitch(ji,jj) * zsm_i_ini(ji,jj) ! salinity |
---|
| 355 | o_i(ji,jj,jl) = zswitch(ji,jj) * 1._wp ! age (1 day) |
---|
| 356 | t_su(ji,jj,jl) = zswitch(ji,jj) * zts_u_ini(ji,jj) + ( 1._wp - zswitch(ji,jj) ) * rt0 ! surf temp |
---|
[4333] | 357 | |
---|
[6808] | 358 | IF( zht_i_ini(ji,jj) > 0._wp )THEN |
---|
| 359 | ht_s(ji,jj,jl)= ht_i(ji,jj,jl) * ( zht_s_ini(ji,jj) / zht_i_ini(ji,jj) ) ! snow depth |
---|
| 360 | ELSE |
---|
| 361 | ht_s(ji,jj,jl)= 0._wp |
---|
| 362 | ENDIF |
---|
| 363 | |
---|
| 364 | ! This case below should not be used if (ht_s/ht_i) is ok in namelist |
---|
| 365 | ! In case snow load is in excess that would lead to transformation from snow to ice |
---|
| 366 | ! Then, transfer the snow excess into the ice (different from limthd_dh) |
---|
| 367 | zdh = MAX( 0._wp, ( rhosn * ht_s(ji,jj,jl) + ( rhoic - rau0 ) * ht_i(ji,jj,jl) ) * r1_rau0 ) |
---|
| 368 | ! recompute ht_i, ht_s avoiding out of bounds values |
---|
| 369 | ht_i(ji,jj,jl) = MIN( hi_max(jl), ht_i(ji,jj,jl) + zdh ) |
---|
| 370 | ht_s(ji,jj,jl) = MAX( 0._wp, ht_s(ji,jj,jl) - zdh * rhoic * r1_rhosn ) |
---|
| 371 | |
---|
| 372 | ! ice volume, salt content, age content |
---|
| 373 | v_i(ji,jj,jl) = ht_i(ji,jj,jl) * a_i(ji,jj,jl) ! ice volume |
---|
| 374 | v_s(ji,jj,jl) = ht_s(ji,jj,jl) * a_i(ji,jj,jl) ! snow volume |
---|
| 375 | smv_i(ji,jj,jl) = MIN( sm_i(ji,jj,jl) , sss_m(ji,jj) ) * v_i(ji,jj,jl) ! salt content |
---|
| 376 | oa_i(ji,jj,jl) = o_i(ji,jj,jl) * a_i(ji,jj,jl) ! age content |
---|
| 377 | END DO |
---|
[5202] | 378 | END DO |
---|
| 379 | END DO |
---|
[825] | 380 | |
---|
[6808] | 381 | ! Snow temperature and heat content |
---|
| 382 | DO jk = 1, nlay_s |
---|
| 383 | DO jl = 1, jpl ! loop over categories |
---|
| 384 | DO jj = 1, jpj |
---|
| 385 | DO ji = 1, jpi |
---|
| 386 | t_s(ji,jj,jk,jl) = zswitch(ji,jj) * ztm_i_ini(ji,jj) + ( 1._wp - zswitch(ji,jj) ) * rt0 |
---|
| 387 | ! Snow energy of melting |
---|
| 388 | e_s(ji,jj,jk,jl) = zswitch(ji,jj) * rhosn * ( cpic * ( rt0 - t_s(ji,jj,jk,jl) ) + lfus ) |
---|
[5123] | 389 | |
---|
[6808] | 390 | ! Mutliply by volume, and divide by number of layers to get heat content in J/m2 |
---|
| 391 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) * v_s(ji,jj,jl) * r1_nlay_s |
---|
| 392 | END DO |
---|
[5202] | 393 | END DO |
---|
| 394 | END DO |
---|
| 395 | END DO |
---|
[825] | 396 | |
---|
[6808] | 397 | ! Ice salinity, temperature and heat content |
---|
| 398 | DO jk = 1, nlay_i |
---|
| 399 | DO jl = 1, jpl ! loop over categories |
---|
| 400 | DO jj = 1, jpj |
---|
| 401 | DO ji = 1, jpi |
---|
| 402 | t_i(ji,jj,jk,jl) = zswitch(ji,jj) * ztm_i_ini(ji,jj) + ( 1._wp - zswitch(ji,jj) ) * rt0 |
---|
| 403 | s_i(ji,jj,jk,jl) = zswitch(ji,jj) * zsm_i_ini(ji,jj) + ( 1._wp - zswitch(ji,jj) ) * rn_simin |
---|
| 404 | ztmelts = - tmut * s_i(ji,jj,jk,jl) + rt0 !Melting temperature in K |
---|
[825] | 405 | |
---|
[6808] | 406 | ! heat content per unit volume |
---|
| 407 | e_i(ji,jj,jk,jl) = zswitch(ji,jj) * rhoic * ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
---|
| 408 | + lfus * ( 1._wp - (ztmelts-rt0) / MIN((t_i(ji,jj,jk,jl)-rt0),-epsi20) ) & |
---|
| 409 | - rcp * ( ztmelts - rt0 ) ) |
---|
[825] | 410 | |
---|
[6808] | 411 | ! Mutliply by ice volume, and divide by number of layers to get heat content in J/m2 |
---|
| 412 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * v_i(ji,jj,jl) * r1_nlay_i |
---|
| 413 | END DO |
---|
[5202] | 414 | END DO |
---|
| 415 | END DO |
---|
| 416 | END DO |
---|
[825] | 417 | |
---|
[6808] | 418 | tn_ice (:,:,:) = t_su (:,:,:) |
---|
[4688] | 419 | |
---|
[6808] | 420 | ELSE ! if ln_iceini=false |
---|
[4688] | 421 | a_i (:,:,:) = 0._wp |
---|
| 422 | v_i (:,:,:) = 0._wp |
---|
| 423 | v_s (:,:,:) = 0._wp |
---|
| 424 | smv_i(:,:,:) = 0._wp |
---|
| 425 | oa_i (:,:,:) = 0._wp |
---|
| 426 | ht_i (:,:,:) = 0._wp |
---|
| 427 | ht_s (:,:,:) = 0._wp |
---|
| 428 | sm_i (:,:,:) = 0._wp |
---|
| 429 | o_i (:,:,:) = 0._wp |
---|
| 430 | |
---|
| 431 | e_i(:,:,:,:) = 0._wp |
---|
| 432 | e_s(:,:,:,:) = 0._wp |
---|
| 433 | |
---|
| 434 | DO jl = 1, jpl |
---|
| 435 | DO jk = 1, nlay_i |
---|
[5123] | 436 | t_i(:,:,jk,jl) = rt0 * tmask(:,:,1) |
---|
[4688] | 437 | END DO |
---|
| 438 | DO jk = 1, nlay_s |
---|
[5123] | 439 | t_s(:,:,jk,jl) = rt0 * tmask(:,:,1) |
---|
[4688] | 440 | END DO |
---|
| 441 | END DO |
---|
[6808] | 442 | |
---|
[5123] | 443 | ENDIF ! ln_iceini |
---|
[4688] | 444 | |
---|
| 445 | at_i (:,:) = 0.0_wp |
---|
| 446 | DO jl = 1, jpl |
---|
| 447 | at_i (:,:) = at_i (:,:) + a_i (:,:,jl) |
---|
| 448 | END DO |
---|
| 449 | ! |
---|
[825] | 450 | !-------------------------------------------------------------------- |
---|
[4161] | 451 | ! 4) Global ice variables for output diagnostics | |
---|
[825] | 452 | !-------------------------------------------------------------------- |
---|
[4161] | 453 | u_ice (:,:) = 0._wp |
---|
| 454 | v_ice (:,:) = 0._wp |
---|
| 455 | stress1_i(:,:) = 0._wp |
---|
| 456 | stress2_i(:,:) = 0._wp |
---|
| 457 | stress12_i(:,:) = 0._wp |
---|
[825] | 458 | |
---|
| 459 | !-------------------------------------------------------------------- |
---|
[4161] | 460 | ! 5) Moments for advection |
---|
[825] | 461 | !-------------------------------------------------------------------- |
---|
| 462 | |
---|
[4161] | 463 | sxopw (:,:) = 0._wp |
---|
| 464 | syopw (:,:) = 0._wp |
---|
| 465 | sxxopw(:,:) = 0._wp |
---|
| 466 | syyopw(:,:) = 0._wp |
---|
| 467 | sxyopw(:,:) = 0._wp |
---|
[3610] | 468 | |
---|
[4161] | 469 | sxice (:,:,:) = 0._wp ; sxsn (:,:,:) = 0._wp ; sxa (:,:,:) = 0._wp |
---|
| 470 | syice (:,:,:) = 0._wp ; sysn (:,:,:) = 0._wp ; sya (:,:,:) = 0._wp |
---|
| 471 | sxxice(:,:,:) = 0._wp ; sxxsn(:,:,:) = 0._wp ; sxxa (:,:,:) = 0._wp |
---|
| 472 | syyice(:,:,:) = 0._wp ; syysn(:,:,:) = 0._wp ; syya (:,:,:) = 0._wp |
---|
| 473 | sxyice(:,:,:) = 0._wp ; sxysn(:,:,:) = 0._wp ; sxya (:,:,:) = 0._wp |
---|
[825] | 474 | |
---|
[4161] | 475 | sxc0 (:,:,:) = 0._wp ; sxe (:,:,:,:)= 0._wp |
---|
| 476 | syc0 (:,:,:) = 0._wp ; sye (:,:,:,:)= 0._wp |
---|
| 477 | sxxc0 (:,:,:) = 0._wp ; sxxe (:,:,:,:)= 0._wp |
---|
| 478 | syyc0 (:,:,:) = 0._wp ; syye (:,:,:,:)= 0._wp |
---|
| 479 | sxyc0 (:,:,:) = 0._wp ; sxye (:,:,:,:)= 0._wp |
---|
[825] | 480 | |
---|
[4161] | 481 | sxsal (:,:,:) = 0._wp |
---|
| 482 | sysal (:,:,:) = 0._wp |
---|
| 483 | sxxsal (:,:,:) = 0._wp |
---|
| 484 | syysal (:,:,:) = 0._wp |
---|
| 485 | sxysal (:,:,:) = 0._wp |
---|
[825] | 486 | |
---|
[4335] | 487 | sxage (:,:,:) = 0._wp |
---|
| 488 | syage (:,:,:) = 0._wp |
---|
| 489 | sxxage (:,:,:) = 0._wp |
---|
| 490 | syyage (:,:,:) = 0._wp |
---|
| 491 | sxyage (:,:,:) = 0._wp |
---|
| 492 | |
---|
[825] | 493 | |
---|
[6808] | 494 | CALL wrk_dealloc( jpi, jpj, jpl, zh_i_ini, za_i_ini, zv_i_ini ) |
---|
| 495 | CALL wrk_dealloc( jpi, jpj, zht_i_ini, zat_i_ini, zvt_i_ini, zts_u_ini, zht_s_ini, zsm_i_ini, ztm_i_ini ) |
---|
| 496 | CALL wrk_dealloc( jpi, jpj, zswitch ) |
---|
[4161] | 497 | |
---|
[825] | 498 | END SUBROUTINE lim_istate |
---|
| 499 | |
---|
| 500 | SUBROUTINE lim_istate_init |
---|
| 501 | !!------------------------------------------------------------------- |
---|
| 502 | !! *** ROUTINE lim_istate_init *** |
---|
| 503 | !! |
---|
| 504 | !! ** Purpose : Definition of initial state of the ice |
---|
| 505 | !! |
---|
[4161] | 506 | !! ** Method : Read the namiceini namelist and check the parameter |
---|
| 507 | !! values called at the first timestep (nit000) |
---|
[825] | 508 | !! |
---|
[4161] | 509 | !! ** input : |
---|
| 510 | !! Namelist namiceini |
---|
| 511 | !! |
---|
| 512 | !! history : |
---|
| 513 | !! 8.5 ! 03-08 (C. Ethe) original code |
---|
| 514 | !! 8.5 ! 07-11 (M. Vancoppenolle) rewritten initialization |
---|
[825] | 515 | !!----------------------------------------------------------------------------- |
---|
[6808] | 516 | ! |
---|
| 517 | INTEGER :: ios,ierr,inum_ice ! Local integer output status for namelist read |
---|
| 518 | INTEGER :: ji,jj |
---|
| 519 | INTEGER :: ifpr, ierror |
---|
| 520 | ! |
---|
| 521 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ice files |
---|
| 522 | TYPE(FLD_N) :: sn_hti, sn_hts, sn_ati, sn_tsu, sn_tmi, sn_smi |
---|
| 523 | TYPE(FLD_N), DIMENSION(jpfldi) :: slf_i ! array of namelist informations on the fields to read |
---|
| 524 | ! |
---|
| 525 | NAMELIST/namiceini/ ln_iceini, ln_iceini_file, rn_thres_sst, rn_hts_ini_n, rn_hts_ini_s, & |
---|
| 526 | & rn_hti_ini_n, rn_hti_ini_s, rn_ati_ini_n, rn_ati_ini_s, rn_smi_ini_n, & |
---|
| 527 | & rn_smi_ini_s, rn_tmi_ini_n, rn_tmi_ini_s, & |
---|
| 528 | & sn_hti, sn_hts, sn_ati, sn_tsu, sn_tmi, sn_smi, cn_dir |
---|
[825] | 529 | !!----------------------------------------------------------------------------- |
---|
[2528] | 530 | ! |
---|
[4147] | 531 | REWIND( numnam_ice_ref ) ! Namelist namiceini in reference namelist : Ice initial state |
---|
| 532 | READ ( numnam_ice_ref, namiceini, IOSTAT = ios, ERR = 901) |
---|
| 533 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceini in reference namelist', lwp ) |
---|
| 534 | |
---|
| 535 | REWIND( numnam_ice_cfg ) ! Namelist namiceini in configuration namelist : Ice initial state |
---|
| 536 | READ ( numnam_ice_cfg, namiceini, IOSTAT = ios, ERR = 902 ) |
---|
| 537 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceini in configuration namelist', lwp ) |
---|
[4624] | 538 | IF(lwm) WRITE ( numoni, namiceini ) |
---|
[4161] | 539 | |
---|
[6808] | 540 | slf_i(jp_hti) = sn_hti ; slf_i(jp_hts) = sn_hts |
---|
| 541 | slf_i(jp_ati) = sn_ati ; slf_i(jp_tsu) = sn_tsu |
---|
| 542 | slf_i(jp_tmi) = sn_tmi ; slf_i(jp_smi) = sn_smi |
---|
| 543 | |
---|
[4161] | 544 | ! Define the initial parameters |
---|
| 545 | ! ------------------------- |
---|
| 546 | |
---|
| 547 | IF(lwp) THEN |
---|
[825] | 548 | WRITE(numout,*) |
---|
| 549 | WRITE(numout,*) 'lim_istate_init : ice parameters inititialisation ' |
---|
| 550 | WRITE(numout,*) '~~~~~~~~~~~~~~~' |
---|
[5123] | 551 | WRITE(numout,*) ' initialization with ice (T) or not (F) ln_iceini = ', ln_iceini |
---|
[6808] | 552 | WRITE(numout,*) ' ice initialization from a netcdf file ln_iceini_file = ', ln_iceini_file |
---|
[5123] | 553 | WRITE(numout,*) ' threshold water temp. for initial sea-ice rn_thres_sst = ', rn_thres_sst |
---|
| 554 | WRITE(numout,*) ' initial snow thickness in the north rn_hts_ini_n = ', rn_hts_ini_n |
---|
| 555 | WRITE(numout,*) ' initial snow thickness in the south rn_hts_ini_s = ', rn_hts_ini_s |
---|
| 556 | WRITE(numout,*) ' initial ice thickness in the north rn_hti_ini_n = ', rn_hti_ini_n |
---|
| 557 | WRITE(numout,*) ' initial ice thickness in the south rn_hti_ini_s = ', rn_hti_ini_s |
---|
| 558 | WRITE(numout,*) ' initial ice concentr. in the north rn_ati_ini_n = ', rn_ati_ini_n |
---|
| 559 | WRITE(numout,*) ' initial ice concentr. in the north rn_ati_ini_s = ', rn_ati_ini_s |
---|
| 560 | WRITE(numout,*) ' initial ice salinity in the north rn_smi_ini_n = ', rn_smi_ini_n |
---|
| 561 | WRITE(numout,*) ' initial ice salinity in the south rn_smi_ini_s = ', rn_smi_ini_s |
---|
| 562 | WRITE(numout,*) ' initial ice/snw temp in the north rn_tmi_ini_n = ', rn_tmi_ini_n |
---|
| 563 | WRITE(numout,*) ' initial ice/snw temp in the south rn_tmi_ini_s = ', rn_tmi_ini_s |
---|
[825] | 564 | ENDIF |
---|
[4161] | 565 | |
---|
[6808] | 566 | IF( ln_iceini_file ) THEN ! Ice initialization using input file |
---|
| 567 | ! |
---|
| 568 | ! set si structure |
---|
| 569 | ALLOCATE( si(jpfldi), STAT=ierror ) |
---|
| 570 | IF( ierror > 0 ) THEN |
---|
| 571 | CALL ctl_stop( 'Ice_ini in limistate: unable to allocate si structure' ) ; RETURN |
---|
| 572 | ENDIF |
---|
| 573 | |
---|
| 574 | DO ifpr = 1, jpfldi |
---|
| 575 | ALLOCATE( si(ifpr)%fnow(jpi,jpj,1) ) |
---|
| 576 | ALLOCATE( si(ifpr)%fdta(jpi,jpj,1,2) ) |
---|
| 577 | END DO |
---|
| 578 | |
---|
| 579 | ! fill si with slf_i and control print |
---|
| 580 | CALL fld_fill( si, slf_i, cn_dir, 'lim_istate', 'lim istate ini', 'numnam_ice' ) |
---|
| 581 | |
---|
| 582 | CALL fld_read( nit000, 1, si ) ! input fields provided at the current time-step |
---|
| 583 | |
---|
| 584 | ENDIF |
---|
| 585 | |
---|
[825] | 586 | END SUBROUTINE lim_istate_init |
---|
| 587 | |
---|
| 588 | #else |
---|
| 589 | !!---------------------------------------------------------------------- |
---|
| 590 | !! Default option : Empty module NO LIM sea-ice model |
---|
| 591 | !!---------------------------------------------------------------------- |
---|
| 592 | CONTAINS |
---|
| 593 | SUBROUTINE lim_istate ! Empty routine |
---|
| 594 | END SUBROUTINE lim_istate |
---|
| 595 | #endif |
---|
| 596 | |
---|
| 597 | !!====================================================================== |
---|
| 598 | END MODULE limistate |
---|