[825] | 1 | MODULE limistate |
---|
| 2 | !!====================================================================== |
---|
| 3 | !! *** MODULE limistate *** |
---|
| 4 | !! Initialisation of diagnostics ice variables |
---|
| 5 | !!====================================================================== |
---|
[2475] | 6 | !! History : 2.0 ! 2004-01 (C. Ethe, G. Madec) Original code |
---|
| 7 | !!---------------------------------------------------------------------- |
---|
[825] | 8 | #if defined key_lim3 |
---|
| 9 | !!---------------------------------------------------------------------- |
---|
[834] | 10 | !! 'key_lim3' : LIM3 sea-ice model |
---|
[825] | 11 | !!---------------------------------------------------------------------- |
---|
| 12 | !! lim_istate : Initialisation of diagnostics ice variables |
---|
| 13 | !! lim_istate_init : initialization of ice state and namelist read |
---|
| 14 | !!---------------------------------------------------------------------- |
---|
[2475] | 15 | USE phycst ! physical constant |
---|
| 16 | USE oce ! dynamics and tracers variables |
---|
| 17 | USE dom_oce ! ocean domain |
---|
| 18 | USE sbc_oce ! Surface boundary condition: ocean fields |
---|
| 19 | USE eosbn2 ! equation of state |
---|
| 20 | USE ice ! sea-ice variables |
---|
| 21 | USE par_ice ! ice parameters |
---|
| 22 | USE dom_ice ! sea-ice domain |
---|
| 23 | USE in_out_manager ! I/O manager |
---|
| 24 | USE lbclnk ! lateral boundary condition - MPP exchanges |
---|
[825] | 25 | |
---|
| 26 | IMPLICIT NONE |
---|
| 27 | PRIVATE |
---|
| 28 | |
---|
[2475] | 29 | PUBLIC lim_istate ! routine called by lim_init.F90 |
---|
[825] | 30 | |
---|
[2475] | 31 | ! !!** init namelist (namiceini) ** |
---|
| 32 | REAL(wp) :: ttest = 2.0_wp ! threshold water temperature for initial sea ice |
---|
| 33 | REAL(wp) :: hninn = 0.5_wp ! initial snow thickness in the north |
---|
| 34 | REAL(wp) :: hginn_u = 2.5_wp ! initial ice thickness in the north |
---|
| 35 | REAL(wp) :: aginn_u = 0.7_wp ! initial leads area in the north |
---|
| 36 | REAL(wp) :: hginn_d = 5.0_wp ! initial ice thickness in the north |
---|
| 37 | REAL(wp) :: aginn_d = 0.25_wp ! initial leads area in the north |
---|
| 38 | REAL(wp) :: hnins = 0.1_wp ! initial snow thickness in the south |
---|
| 39 | REAL(wp) :: hgins_u = 1.0_wp ! initial ice thickness in the south |
---|
| 40 | REAL(wp) :: agins_u = 0.7_wp ! initial leads area in the south |
---|
| 41 | REAL(wp) :: hgins_d = 2.0_wp ! initial ice thickness in the south |
---|
| 42 | REAL(wp) :: agins_d = 0.2_wp ! initial leads area in the south |
---|
| 43 | REAL(wp) :: sinn = 6.301_wp ! initial salinity |
---|
| 44 | REAL(wp) :: sins = 6.301_wp ! |
---|
[825] | 45 | |
---|
| 46 | !!---------------------------------------------------------------------- |
---|
[2287] | 47 | !! NEMO/LIM3 3.3 , UCL - NEMO Consortium (2010) |
---|
[1156] | 48 | !! $Id$ |
---|
[2475] | 49 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
---|
[825] | 50 | !!---------------------------------------------------------------------- |
---|
| 51 | CONTAINS |
---|
| 52 | |
---|
| 53 | SUBROUTINE lim_istate |
---|
| 54 | !!------------------------------------------------------------------- |
---|
| 55 | !! *** ROUTINE lim_istate *** |
---|
| 56 | !! |
---|
| 57 | !! ** Purpose : defined the sea-ice initial state |
---|
| 58 | !! |
---|
| 59 | !! ** Method : restart from a state defined in a binary file |
---|
| 60 | !! or from arbitrary sea-ice conditions |
---|
[2475] | 61 | !!------------------------------------------------------------------- |
---|
[834] | 62 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
---|
[2475] | 63 | REAL(wp) :: zeps6, zeps, ztmelts, epsi06 ! local scalars |
---|
| 64 | REAL(wp) :: zvol, zare, zh, zh1, zh2, zh3, zan, zbn, zas, zbs |
---|
| 65 | REAL(wp), DIMENSION(jpm) :: zgfactorn, zhin |
---|
| 66 | REAL(wp), DIMENSION(jpm) :: zgfactors, zhis |
---|
| 67 | REAL(wp), DIMENSION(jpi,jpj) :: zidto ! ice indicator |
---|
[825] | 68 | !-------------------------------------------------------------------- |
---|
[921] | 69 | |
---|
[825] | 70 | !-------------------------------------------------------------------- |
---|
| 71 | ! 1) Preliminary things |
---|
| 72 | !-------------------------------------------------------------------- |
---|
[2475] | 73 | epsi06 = 1.e-6_wp |
---|
[825] | 74 | |
---|
| 75 | CALL lim_istate_init ! reading the initials parameters of the ice |
---|
| 76 | |
---|
[1037] | 77 | !!gm in lim2 the initialisation if only done if required in the namelist : |
---|
| 78 | !!gm IF( .NOT. ln_limini ) THEN |
---|
| 79 | !!gm this should be added in lim3 namelist... |
---|
[825] | 80 | |
---|
| 81 | !-------------------------------------------------------------------- |
---|
| 82 | ! 2) Ice initialization (hi,hs,frld,t_su,sm_i,t_i,t_s) | |
---|
| 83 | !-------------------------------------------------------------------- |
---|
| 84 | |
---|
[1037] | 85 | IF(lwp) WRITE(numout,*) |
---|
| 86 | IF(lwp) WRITE(numout,*) 'lim_istate : Ice initialization ' |
---|
| 87 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' |
---|
[825] | 88 | |
---|
[1037] | 89 | t_bo(:,:) = tfreez( sn(:,:,1) ) * tmask(:,:,1) ! freezing/melting point of sea water [Celcius] |
---|
[825] | 90 | |
---|
[1037] | 91 | DO jj = 1, jpj ! ice if sst <= t-freez + ttest |
---|
| 92 | DO ji = 1, jpi |
---|
| 93 | IF( tn(ji,jj,1) - t_bo(ji,jj) >= ttest ) THEN ; zidto(ji,jj) = 0.e0 ! no ice |
---|
| 94 | ELSE ; zidto(ji,jj) = 1.e0 ! ice |
---|
| 95 | ENDIF |
---|
| 96 | END DO |
---|
| 97 | END DO |
---|
| 98 | |
---|
| 99 | t_bo(:,:) = t_bo(:,:) + rt0 ! t_bo converted from Celsius to Kelvin (rt0 over land) |
---|
| 100 | |
---|
[825] | 101 | ! constants for heat contents |
---|
[2475] | 102 | zeps = 1.e-20_wp |
---|
| 103 | zeps6 = 1.e-06_wp |
---|
[825] | 104 | |
---|
| 105 | ! zgfactor for initial ice distribution |
---|
[2475] | 106 | zgfactorn(:) = 0._wp |
---|
| 107 | zgfactors(:) = 0._wp |
---|
[825] | 108 | |
---|
| 109 | ! first ice type |
---|
| 110 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) |
---|
[2475] | 111 | zhin (1) = ( hi_max(jl-1) + hi_max(jl) ) * 0.5_wp |
---|
| 112 | zgfactorn(1) = zgfactorn(1) + exp(-(zhin(1)-hginn_u)*(zhin(1)-hginn_u) * 0.5_wp ) |
---|
| 113 | zhis (1) = ( hi_max(jl-1) + hi_max(jl) ) * 0.5_wp |
---|
| 114 | zgfactors(1) = zgfactors(1) + exp(-(zhis(1)-hgins_u)*(zhis(1)-hgins_u) * 0.5_wp ) |
---|
[825] | 115 | END DO ! jl |
---|
| 116 | zgfactorn(1) = aginn_u / zgfactorn(1) |
---|
| 117 | zgfactors(1) = agins_u / zgfactors(1) |
---|
| 118 | |
---|
| 119 | ! ------------- |
---|
| 120 | ! new distribution, polynom of second order, conserving area and volume |
---|
[2475] | 121 | zh1 = 0._wp |
---|
| 122 | zh2 = 0._wp |
---|
| 123 | zh3 = 0._wp |
---|
[825] | 124 | DO jl = 1, jpl |
---|
[2475] | 125 | zh = ( hi_max(jl-1) + hi_max(jl) ) * 0.5_wp |
---|
[825] | 126 | zh1 = zh1 + zh |
---|
[2475] | 127 | zh2 = zh2 + zh * zh |
---|
| 128 | zh3 = zh3 + zh * zh * zh |
---|
[825] | 129 | END DO |
---|
[1037] | 130 | IF(lwp) WRITE(numout,*) ' zh1 : ', zh1 |
---|
| 131 | IF(lwp) WRITE(numout,*) ' zh2 : ', zh2 |
---|
| 132 | IF(lwp) WRITE(numout,*) ' zh3 : ', zh3 |
---|
[825] | 133 | |
---|
[2475] | 134 | zvol = aginn_u * hginn_u |
---|
[825] | 135 | zare = aginn_u |
---|
[2475] | 136 | IF( jpl >= 2 ) THEN |
---|
[825] | 137 | zbn = ( zvol*zh2 - zare*zh3 ) / ( zh2*zh2 - zh1*zh3) |
---|
| 138 | zan = ( zare - zbn*zh1 ) / zh2 |
---|
| 139 | ENDIF |
---|
| 140 | |
---|
[1037] | 141 | IF(lwp) WRITE(numout,*) ' zvol: ', zvol |
---|
| 142 | IF(lwp) WRITE(numout,*) ' zare: ', zare |
---|
| 143 | IF(lwp) WRITE(numout,*) ' zbn : ', zbn |
---|
| 144 | IF(lwp) WRITE(numout,*) ' zan : ', zan |
---|
[825] | 145 | |
---|
[2475] | 146 | zvol = agins_u * hgins_u |
---|
[825] | 147 | zare = agins_u |
---|
[2475] | 148 | IF( jpl >= 2 ) THEN |
---|
[825] | 149 | zbs = ( zvol*zh2 - zare*zh3 ) / ( zh2*zh2 - zh1*zh3) |
---|
| 150 | zas = ( zare - zbs*zh1 ) / zh2 |
---|
| 151 | ENDIF |
---|
| 152 | |
---|
[1037] | 153 | IF(lwp) WRITE(numout,*) ' zvol: ', zvol |
---|
| 154 | IF(lwp) WRITE(numout,*) ' zare: ', zare |
---|
| 155 | IF(lwp) WRITE(numout,*) ' zbn : ', zbn |
---|
| 156 | IF(lwp) WRITE(numout,*) ' zan : ', zan |
---|
[825] | 157 | |
---|
| 158 | !end of new lines |
---|
| 159 | ! ------------- |
---|
| 160 | !!! |
---|
[921] | 161 | ! retour a LIMA_MEC |
---|
| 162 | ! ! second ice type |
---|
| 163 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
---|
| 164 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
---|
[825] | 165 | |
---|
[921] | 166 | ! ! here to change !!!! |
---|
| 167 | ! jm = 2 |
---|
| 168 | ! DO jl = ice_cat_bounds(jm,1), ice_cat_bounds(jm,2) |
---|
| 169 | ! zhin (2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
---|
| 170 | ! zhin (2) = ( hi_max_typ(jl-ice_cat_bounds(2,1),jm ) + & |
---|
| 171 | ! hi_max_typ(jl-ice_cat_bounds(2,1) + 1,jm) ) / 2.0 |
---|
| 172 | ! zgfactorn(2) = zgfactorn(2) + exp(-(zhin(2)-hginn_d)*(zhin(2)-hginn_d)/2.0) |
---|
| 173 | ! zhis (2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
---|
| 174 | ! zhis (2) = ( hi_max_typ(jl-ice_cat_bounds(2,1),jm ) + & |
---|
| 175 | ! hi_max_typ(jl-ice_cat_bounds(2,1) + 1,jm) ) / 2.0 |
---|
| 176 | ! zgfactors(2) = zgfactors(2) + exp(-(zhis(2)-hgins_d)*(zhis(2)-hgins_d)/2.0) |
---|
| 177 | ! END DO ! jl |
---|
| 178 | ! zgfactorn(2) = aginn_d / zgfactorn(2) |
---|
| 179 | ! zgfactors(2) = agins_d / zgfactors(2) |
---|
| 180 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
---|
| 181 | ! END retour a LIMA_MEC |
---|
[825] | 182 | !!! |
---|
[1037] | 183 | |
---|
| 184 | !!gm optimisation : loop over the ice categories inside the ji, jj loop !!! |
---|
| 185 | |
---|
[825] | 186 | DO jj = 1, jpj |
---|
| 187 | DO ji = 1, jpi |
---|
| 188 | |
---|
| 189 | !--- Northern hemisphere |
---|
| 190 | !---------------------------------------------------------------- |
---|
[2475] | 191 | IF( fcor(ji,jj) >= 0._wp ) THEN |
---|
[825] | 192 | |
---|
| 193 | !----------------------- |
---|
| 194 | ! Ice area / thickness |
---|
| 195 | !----------------------- |
---|
| 196 | |
---|
| 197 | IF ( jpl .EQ. 1) THEN ! one category |
---|
| 198 | |
---|
| 199 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
---|
[1037] | 200 | a_i(ji,jj,jl) = zidto(ji,jj) * aginn_u |
---|
| 201 | ht_i(ji,jj,jl) = zidto(ji,jj) * hginn_u |
---|
[825] | 202 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
---|
| 203 | END DO |
---|
| 204 | |
---|
| 205 | ELSE ! several categories |
---|
| 206 | |
---|
| 207 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
---|
| 208 | zhin(1) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
---|
[1037] | 209 | a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactorn(1) * exp(-(zhin(1)-hginn_u)* & |
---|
[921] | 210 | (zhin(1)-hginn_u)/2.0) , epsi06) |
---|
[825] | 211 | ! new line |
---|
[1037] | 212 | a_i(ji,jj,jl) = zidto(ji,jj) * ( zan * zhin(1) * zhin(1) + zbn * zhin(1) ) |
---|
| 213 | ht_i(ji,jj,jl) = zidto(ji,jj) * zhin(1) |
---|
[825] | 214 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
---|
| 215 | END DO |
---|
| 216 | |
---|
| 217 | ENDIF |
---|
| 218 | |
---|
| 219 | |
---|
| 220 | !!! |
---|
[921] | 221 | ! retour a LIMA_MEC |
---|
| 222 | ! !ridged ice |
---|
| 223 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
---|
| 224 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
---|
| 225 | ! DO jl = ice_cat_bounds(2,1), ice_cat_bounds(2,2) ! loop over ice thickness categories |
---|
| 226 | ! zhin(2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
---|
[1037] | 227 | ! a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactorn(2) * exp(-(zhin(2)-hginn_d)* & |
---|
[921] | 228 | ! (zhin(2)-hginn_d)/2.0) , epsi06) |
---|
[1037] | 229 | ! ht_i(ji,jj,jl) = zidto(ji,jj) * zhin(2) |
---|
[921] | 230 | ! v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
---|
| 231 | ! END DO |
---|
| 232 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
---|
[825] | 233 | |
---|
[921] | 234 | ! !rafted ice |
---|
| 235 | ! jl = 6 |
---|
| 236 | ! a_i(ji,jj,jl) = 0.0 |
---|
| 237 | ! ht_i(ji,jj,jl) = 0.0 |
---|
| 238 | ! v_i(ji,jj,jl) = 0.0 |
---|
| 239 | ! END retour a LIMA_MEC |
---|
[825] | 240 | !!! |
---|
| 241 | |
---|
| 242 | DO jl = 1, jpl |
---|
| 243 | |
---|
| 244 | !------------- |
---|
| 245 | ! Snow depth |
---|
| 246 | !------------- |
---|
[1037] | 247 | ht_s(ji,jj,jl) = zidto(ji,jj) * hninn |
---|
[825] | 248 | v_s(ji,jj,jl) = ht_s(ji,jj,jl)*a_i(ji,jj,jl) |
---|
| 249 | |
---|
| 250 | !--------------- |
---|
| 251 | ! Ice salinity |
---|
| 252 | !--------------- |
---|
[1037] | 253 | sm_i(ji,jj,jl) = zidto(ji,jj) * sinn + ( 1.0 - zidto(ji,jj) ) * 0.1 |
---|
[888] | 254 | smv_i(ji,jj,jl) = MIN( sm_i(ji,jj,jl) , sss_m(ji,jj) ) * v_i(ji,jj,jl) |
---|
[825] | 255 | |
---|
| 256 | !---------- |
---|
| 257 | ! Ice age |
---|
| 258 | !---------- |
---|
[1037] | 259 | o_i(ji,jj,jl) = zidto(ji,jj) * 1.0 + ( 1.0 - zidto(ji,jj) ) |
---|
[825] | 260 | oa_i(ji,jj,jl) = o_i(ji,jj,jl) * a_i(ji,jj,jl) |
---|
[921] | 261 | |
---|
[825] | 262 | !------------------------------ |
---|
| 263 | ! Sea ice surface temperature |
---|
| 264 | !------------------------------ |
---|
| 265 | |
---|
[1037] | 266 | t_su(ji,jj,jl) = zidto(ji,jj) * 270.0 + ( 1.0 - zidto(ji,jj) ) * t_bo(ji,jj) |
---|
[825] | 267 | |
---|
| 268 | !------------------------------------ |
---|
| 269 | ! Snow temperature and heat content |
---|
| 270 | !------------------------------------ |
---|
| 271 | |
---|
| 272 | DO jk = 1, nlay_s |
---|
[1037] | 273 | t_s(ji,jj,jk,jl) = zidto(ji,jj) * 270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
---|
[825] | 274 | ! Snow energy of melting |
---|
[1103] | 275 | e_s(ji,jj,jk,jl) = zidto(ji,jj) * rhosn * ( cpic * ( rtt - t_s(ji,jj,jk,jl) ) + lfus ) |
---|
[825] | 276 | ! Change dimensions |
---|
| 277 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) / unit_fac |
---|
| 278 | ! Multiply by volume, so that heat content in 10^9 Joules |
---|
| 279 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) * area(ji,jj) * & |
---|
[921] | 280 | v_s(ji,jj,jl) / nlay_s |
---|
[825] | 281 | END DO !jk |
---|
| 282 | |
---|
| 283 | !----------------------------------------------- |
---|
| 284 | ! Ice salinities, temperature and heat content |
---|
| 285 | !----------------------------------------------- |
---|
| 286 | |
---|
| 287 | DO jk = 1, nlay_i |
---|
[1037] | 288 | t_i(ji,jj,jk,jl) = zidto(ji,jj)*270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
---|
| 289 | s_i(ji,jj,jk,jl) = zidto(ji,jj) * sinn + ( 1.0 - zidto(ji,jj) ) * 0.1 |
---|
[825] | 290 | ztmelts = - tmut * s_i(ji,jj,jk,jl) + rtt !Melting temperature in K |
---|
[921] | 291 | |
---|
| 292 | ! heat content per unit volume |
---|
[1037] | 293 | e_i(ji,jj,jk,jl) = zidto(ji,jj) * rhoic * & |
---|
[921] | 294 | ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
---|
| 295 | + lfus * ( 1.0 - (ztmelts-rtt) / MIN((t_i(ji,jj,jk,jl)-rtt),-zeps) ) & |
---|
| 296 | - rcp * ( ztmelts - rtt ) & |
---|
| 297 | ) |
---|
[825] | 298 | |
---|
[921] | 299 | ! Correct dimensions to avoid big values |
---|
[825] | 300 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) / unit_fac |
---|
| 301 | |
---|
[921] | 302 | ! Mutliply by ice volume, and divide by number of layers to get heat content in 10^9 J |
---|
[825] | 303 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * & |
---|
[921] | 304 | area(ji,jj) * a_i(ji,jj,jl) * ht_i(ji,jj,jl) / & |
---|
| 305 | nlay_i |
---|
[825] | 306 | END DO ! jk |
---|
| 307 | |
---|
| 308 | END DO ! jl |
---|
| 309 | |
---|
| 310 | ELSE ! on fcor |
---|
| 311 | |
---|
[921] | 312 | !--- Southern hemisphere |
---|
| 313 | !---------------------------------------------------------------- |
---|
[825] | 314 | |
---|
| 315 | !----------------------- |
---|
| 316 | ! Ice area / thickness |
---|
| 317 | !----------------------- |
---|
| 318 | |
---|
| 319 | IF ( jpl .EQ. 1) THEN ! one category |
---|
| 320 | |
---|
| 321 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
---|
[1037] | 322 | a_i(ji,jj,jl) = zidto(ji,jj) * agins_u |
---|
| 323 | ht_i(ji,jj,jl) = zidto(ji,jj) * hgins_u |
---|
[825] | 324 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
---|
| 325 | END DO |
---|
| 326 | |
---|
| 327 | ELSE ! several categories |
---|
[921] | 328 | |
---|
| 329 | !level ice |
---|
[825] | 330 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) !over thickness categories |
---|
| 331 | |
---|
| 332 | zhis(1) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
---|
[1037] | 333 | a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactors(1) * exp(-(zhis(1)-hgins_u) * & |
---|
[921] | 334 | (zhis(1)-hgins_u)/2.0) , epsi06 ) |
---|
[825] | 335 | ! new line square distribution volume conserving |
---|
[1037] | 336 | a_i(ji,jj,jl) = zidto(ji,jj) * ( zas * zhis(1) * zhis(1) + zbs * zhis(1) ) |
---|
| 337 | ht_i(ji,jj,jl) = zidto(ji,jj) * zhis(1) |
---|
[825] | 338 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
---|
[921] | 339 | |
---|
[825] | 340 | END DO ! jl |
---|
| 341 | |
---|
| 342 | ENDIF |
---|
| 343 | |
---|
| 344 | !!! |
---|
[921] | 345 | ! retour a LIMA_MEC |
---|
| 346 | ! !ridged ice |
---|
| 347 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
---|
| 348 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
---|
| 349 | ! DO jl = ice_cat_bounds(2,1), ice_cat_bounds(2,2) !over thickness categories |
---|
| 350 | ! zhis(2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
---|
[1037] | 351 | ! a_i(ji,jj,jl) = zidto(ji,jj)*MAX( zgfactors(2) & |
---|
| 352 | ! & * exp(-(zhis(2)-hgins_d)*(zhis(2)-hgins_d)/2.0), epsi06 ) |
---|
| 353 | ! ht_i(ji,jj,jl) = zidto(ji,jj) * zhis(2) |
---|
[921] | 354 | ! v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
---|
| 355 | ! END DO |
---|
| 356 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
---|
[825] | 357 | |
---|
[921] | 358 | ! !rafted ice |
---|
| 359 | ! jl = 6 |
---|
| 360 | ! a_i(ji,jj,jl) = 0.0 |
---|
| 361 | ! ht_i(ji,jj,jl) = 0.0 |
---|
| 362 | ! v_i(ji,jj,jl) = 0.0 |
---|
| 363 | ! END retour a LIMA_MEC |
---|
[825] | 364 | !!! |
---|
| 365 | |
---|
| 366 | DO jl = 1, jpl !over thickness categories |
---|
| 367 | |
---|
| 368 | !--------------- |
---|
| 369 | ! Snow depth |
---|
| 370 | !--------------- |
---|
| 371 | |
---|
[1037] | 372 | ht_s(ji,jj,jl) = zidto(ji,jj) * hnins |
---|
[825] | 373 | v_s(ji,jj,jl) = ht_s(ji,jj,jl)*a_i(ji,jj,jl) |
---|
| 374 | |
---|
| 375 | !--------------- |
---|
| 376 | ! Ice salinity |
---|
| 377 | !--------------- |
---|
| 378 | |
---|
[1037] | 379 | sm_i(ji,jj,jl) = zidto(ji,jj) * sins + ( 1.0 - zidto(ji,jj) ) * 0.1 |
---|
[888] | 380 | smv_i(ji,jj,jl) = MIN( sm_i(ji,jj,jl) , sss_m(ji,jj) ) * v_i(ji,jj,jl) |
---|
[825] | 381 | |
---|
| 382 | !---------- |
---|
| 383 | ! Ice age |
---|
| 384 | !---------- |
---|
| 385 | |
---|
[1037] | 386 | o_i(ji,jj,jl) = zidto(ji,jj) * 1.0 + ( 1.0 - zidto(ji,jj) ) |
---|
[825] | 387 | oa_i(ji,jj,jl) = o_i(ji,jj,jl) * a_i(ji,jj,jl) |
---|
| 388 | |
---|
| 389 | !------------------------------ |
---|
| 390 | ! Sea ice surface temperature |
---|
| 391 | !------------------------------ |
---|
| 392 | |
---|
[1037] | 393 | t_su(ji,jj,jl) = zidto(ji,jj) * 270.0 + ( 1.0 - zidto(ji,jj) ) * t_bo(ji,jj) |
---|
[825] | 394 | |
---|
| 395 | !---------------------------------- |
---|
| 396 | ! Snow temperature / heat content |
---|
| 397 | !---------------------------------- |
---|
| 398 | |
---|
| 399 | DO jk = 1, nlay_s |
---|
[1037] | 400 | t_s(ji,jj,jk,jl) = zidto(ji,jj) * 270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
---|
[825] | 401 | ! Snow energy of melting |
---|
[1037] | 402 | e_s(ji,jj,jk,jl) = zidto(ji,jj) * rhosn * ( cpic * ( rtt - t_s(ji,jj,jk,jl) ) + lfus ) |
---|
[825] | 403 | ! Change dimensions |
---|
| 404 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) / unit_fac |
---|
| 405 | ! Multiply by volume, so that heat content in 10^9 Joules |
---|
| 406 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) * area(ji,jj) * & |
---|
[921] | 407 | v_s(ji,jj,jl) / nlay_s |
---|
[825] | 408 | END DO |
---|
| 409 | |
---|
| 410 | !--------------------------------------------- |
---|
| 411 | ! Ice temperature, salinity and heat content |
---|
| 412 | !--------------------------------------------- |
---|
| 413 | |
---|
| 414 | DO jk = 1, nlay_i |
---|
[1037] | 415 | t_i(ji,jj,jk,jl) = zidto(ji,jj)*270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
---|
| 416 | s_i(ji,jj,jk,jl) = zidto(ji,jj) * sins + ( 1.0 - zidto(ji,jj) ) * 0.1 |
---|
[825] | 417 | ztmelts = - tmut * s_i(ji,jj,jk,jl) + rtt !Melting temperature in K |
---|
[921] | 418 | |
---|
| 419 | ! heat content per unit volume |
---|
[1037] | 420 | e_i(ji,jj,jk,jl) = zidto(ji,jj) * rhoic * & |
---|
[921] | 421 | ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
---|
| 422 | + lfus * ( 1.0 - (ztmelts-rtt) / MIN((t_i(ji,jj,jk,jl)-rtt),-zeps) ) & |
---|
| 423 | - rcp * ( ztmelts - rtt ) & |
---|
| 424 | ) |
---|
[825] | 425 | |
---|
[921] | 426 | ! Correct dimensions to avoid big values |
---|
[825] | 427 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) / unit_fac |
---|
| 428 | |
---|
[921] | 429 | ! Mutliply by ice volume, and divide by number of layers to get heat content in 10^9 J |
---|
[825] | 430 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * & |
---|
[921] | 431 | area(ji,jj) * a_i(ji,jj,jl) * ht_i(ji,jj,jl) / & |
---|
| 432 | nlay_i |
---|
[825] | 433 | END DO !jk |
---|
| 434 | |
---|
| 435 | END DO ! jl |
---|
| 436 | |
---|
| 437 | ENDIF ! on fcor |
---|
| 438 | |
---|
[2475] | 439 | END DO |
---|
| 440 | END DO |
---|
[825] | 441 | |
---|
| 442 | !-------------------------------------------------------------------- |
---|
| 443 | ! 3) Global ice variables for output diagnostics | |
---|
| 444 | !-------------------------------------------------------------------- |
---|
| 445 | |
---|
| 446 | fsbbq (:,:) = 0.e0 |
---|
| 447 | u_ice (:,:) = 0.e0 |
---|
| 448 | v_ice (:,:) = 0.e0 |
---|
| 449 | stress1_i(:,:) = 0.0 |
---|
| 450 | stress2_i(:,:) = 0.0 |
---|
| 451 | stress12_i(:,:) = 0.0 |
---|
| 452 | |
---|
| 453 | !-------------------------------------------------------------------- |
---|
| 454 | ! 4) Moments for advection |
---|
| 455 | !-------------------------------------------------------------------- |
---|
| 456 | |
---|
| 457 | sxice (:,:,:) = 0.e0 ; sxsn (:,:,:) = 0.e0 ; sxa (:,:,:) = 0.e0 |
---|
| 458 | syice (:,:,:) = 0.e0 ; sysn (:,:,:) = 0.e0 ; sya (:,:,:) = 0.e0 |
---|
| 459 | sxxice(:,:,:) = 0.e0 ; sxxsn(:,:,:) = 0.e0 ; sxxa (:,:,:) = 0.e0 |
---|
| 460 | syyice(:,:,:) = 0.e0 ; syysn(:,:,:) = 0.e0 ; syya (:,:,:) = 0.e0 |
---|
| 461 | sxyice(:,:,:) = 0.e0 ; sxysn(:,:,:) = 0.e0 ; sxya (:,:,:) = 0.e0 |
---|
| 462 | |
---|
| 463 | sxc0 (:,:,:) = 0.e0 ; sxe (:,:,:,:)= 0.e0 |
---|
| 464 | syc0 (:,:,:) = 0.e0 ; sye (:,:,:,:)= 0.e0 |
---|
| 465 | sxxc0 (:,:,:) = 0.e0 ; sxxe (:,:,:,:)= 0.e0 |
---|
| 466 | syyc0 (:,:,:) = 0.e0 ; syye (:,:,:,:)= 0.e0 |
---|
| 467 | sxyc0 (:,:,:) = 0.e0 ; sxye (:,:,:,:)= 0.e0 |
---|
| 468 | |
---|
| 469 | sxsal (:,:,:) = 0.e0 |
---|
| 470 | sysal (:,:,:) = 0.e0 |
---|
| 471 | sxxsal (:,:,:) = 0.e0 |
---|
| 472 | syysal (:,:,:) = 0.e0 |
---|
| 473 | sxysal (:,:,:) = 0.e0 |
---|
| 474 | |
---|
| 475 | !-------------------------------------------------------------------- |
---|
| 476 | ! 5) Lateral boundary conditions | |
---|
| 477 | !-------------------------------------------------------------------- |
---|
| 478 | |
---|
| 479 | DO jl = 1, jpl |
---|
| 480 | CALL lbc_lnk( a_i(:,:,jl) , 'T', 1. ) |
---|
| 481 | CALL lbc_lnk( v_i(:,:,jl) , 'T', 1. ) |
---|
| 482 | CALL lbc_lnk( v_s(:,:,jl) , 'T', 1. ) |
---|
| 483 | CALL lbc_lnk( smv_i(:,:,jl), 'T', 1. ) |
---|
| 484 | CALL lbc_lnk( oa_i(:,:,jl) , 'T', 1. ) |
---|
[2475] | 485 | ! |
---|
[825] | 486 | CALL lbc_lnk( ht_i(:,:,jl) , 'T', 1. ) |
---|
| 487 | CALL lbc_lnk( ht_s(:,:,jl) , 'T', 1. ) |
---|
| 488 | CALL lbc_lnk( sm_i(:,:,jl) , 'T', 1. ) |
---|
| 489 | CALL lbc_lnk( o_i(:,:,jl) , 'T', 1. ) |
---|
| 490 | CALL lbc_lnk( t_su(:,:,jl) , 'T', 1. ) |
---|
| 491 | DO jk = 1, nlay_s |
---|
| 492 | CALL lbc_lnk(t_s(:,:,jk,jl), 'T', 1. ) |
---|
[869] | 493 | CALL lbc_lnk(e_s(:,:,jk,jl), 'T', 1. ) |
---|
[825] | 494 | END DO |
---|
| 495 | DO jk = 1, nlay_i |
---|
| 496 | CALL lbc_lnk(t_i(:,:,jk,jl), 'T', 1. ) |
---|
| 497 | CALL lbc_lnk(e_i(:,:,jk,jl), 'T', 1. ) |
---|
| 498 | END DO |
---|
[2475] | 499 | ! |
---|
| 500 | a_i(:,:,jl) = tms(:,:) * a_i(:,:,jl) |
---|
[825] | 501 | END DO |
---|
| 502 | |
---|
| 503 | CALL lbc_lnk( at_i , 'T', 1. ) |
---|
| 504 | at_i(:,:) = tms(:,:) * at_i(:,:) ! put 0 over land |
---|
[2475] | 505 | ! |
---|
[825] | 506 | CALL lbc_lnk( fsbbq , 'T', 1. ) |
---|
[2475] | 507 | ! |
---|
[825] | 508 | END SUBROUTINE lim_istate |
---|
| 509 | |
---|
[2475] | 510 | |
---|
[825] | 511 | SUBROUTINE lim_istate_init |
---|
| 512 | !!------------------------------------------------------------------- |
---|
| 513 | !! *** ROUTINE lim_istate_init *** |
---|
| 514 | !! |
---|
| 515 | !! ** Purpose : Definition of initial state of the ice |
---|
| 516 | !! |
---|
[2475] | 517 | !! ** Method : Read the namiceini namelist and check the parameter |
---|
| 518 | !! values called at the first timestep (nit000) |
---|
[825] | 519 | !! |
---|
[2475] | 520 | !! ** input : namelist namiceini |
---|
[825] | 521 | !!----------------------------------------------------------------------------- |
---|
[2475] | 522 | NAMELIST/namiceini/ ttest, hninn, hginn_u, aginn_u, hginn_d, aginn_d, hnins, & |
---|
| 523 | & hgins_u, agins_u, hgins_d, agins_d, sinn, sins |
---|
[825] | 524 | !!----------------------------------------------------------------------------- |
---|
[2475] | 525 | ! |
---|
| 526 | REWIND ( numnam_ice ) ! Read Namelist namiceini |
---|
[825] | 527 | READ ( numnam_ice , namiceini ) |
---|
[2475] | 528 | ! |
---|
| 529 | IF(lwp) THEN ! control print |
---|
[825] | 530 | WRITE(numout,*) |
---|
| 531 | WRITE(numout,*) 'lim_istate_init : ice parameters inititialisation ' |
---|
| 532 | WRITE(numout,*) '~~~~~~~~~~~~~~~' |
---|
| 533 | WRITE(numout,*) ' threshold water temp. for initial sea-ice ttest = ', ttest |
---|
| 534 | WRITE(numout,*) ' initial snow thickness in the north hninn = ', hninn |
---|
| 535 | WRITE(numout,*) ' initial undef ice thickness in the north hginn_u = ', hginn_u |
---|
| 536 | WRITE(numout,*) ' initial undef ice concentr. in the north aginn_u = ', aginn_u |
---|
| 537 | WRITE(numout,*) ' initial def ice thickness in the north hginn_d = ', hginn_d |
---|
| 538 | WRITE(numout,*) ' initial def ice concentr. in the north aginn_d = ', aginn_d |
---|
| 539 | WRITE(numout,*) ' initial snow thickness in the south hnins = ', hnins |
---|
| 540 | WRITE(numout,*) ' initial undef ice thickness in the north hgins_u = ', hgins_u |
---|
| 541 | WRITE(numout,*) ' initial undef ice concentr. in the north agins_u = ', agins_u |
---|
| 542 | WRITE(numout,*) ' initial def ice thickness in the north hgins_d = ', hgins_d |
---|
| 543 | WRITE(numout,*) ' initial def ice concentr. in the north agins_d = ', agins_d |
---|
| 544 | WRITE(numout,*) ' initial ice salinity in the north sinn = ', sinn |
---|
| 545 | WRITE(numout,*) ' initial ice salinity in the south sins = ', sins |
---|
| 546 | ENDIF |
---|
[2475] | 547 | ! |
---|
[825] | 548 | END SUBROUTINE lim_istate_init |
---|
| 549 | |
---|
| 550 | #else |
---|
| 551 | !!---------------------------------------------------------------------- |
---|
| 552 | !! Default option : Empty module NO LIM sea-ice model |
---|
| 553 | !!---------------------------------------------------------------------- |
---|
| 554 | CONTAINS |
---|
| 555 | SUBROUTINE lim_istate ! Empty routine |
---|
| 556 | END SUBROUTINE lim_istate |
---|
| 557 | #endif |
---|
| 558 | |
---|
| 559 | !!====================================================================== |
---|
| 560 | END MODULE limistate |
---|