| 1 | MODULE dynspg_ts |
|---|
| 2 | !!====================================================================== |
|---|
| 3 | !! *** MODULE dynspg_ts *** |
|---|
| 4 | !! Ocean dynamics: surface pressure gradient trend, split-explicit scheme |
|---|
| 5 | !!====================================================================== |
|---|
| 6 | !! History : 1.0 ! 2004-12 (L. Bessieres, G. Madec) Original code |
|---|
| 7 | !! - ! 2005-11 (V. Garnier, G. Madec) optimization |
|---|
| 8 | !! - ! 2006-08 (S. Masson) distributed restart using iom |
|---|
| 9 | !! 2.0 ! 2007-07 (D. Storkey) calls to BDY routines |
|---|
| 10 | !! - ! 2008-01 (R. Benshila) change averaging method |
|---|
| 11 | !! 3.2 ! 2009-07 (R. Benshila, G. Madec) Complete revisit associated to vvl reactivation |
|---|
| 12 | !! 3.3 ! 2010-09 (D. Storkey, E. O'Dea) update for BDY for Shelf configurations |
|---|
| 13 | !! 3.3 ! 2011-03 (R. Benshila, R. Hordoir, P. Oddo) update calculation of ub_b |
|---|
| 14 | !! 3.5 ! 2013-07 (J. Chanut) Switch to Forward-backward time stepping |
|---|
| 15 | !! 3.6 ! 2013-11 (A. Coward) Update for z-tilde compatibility |
|---|
| 16 | !! 3.7 ! 2015-11 (J. Chanut) free surface simplification |
|---|
| 17 | !!--------------------------------------------------------------------- |
|---|
| 18 | |
|---|
| 19 | !!---------------------------------------------------------------------- |
|---|
| 20 | !! dyn_spg_ts : compute surface pressure gradient trend using a time-splitting scheme |
|---|
| 21 | !! dyn_spg_ts_init: initialisation of the time-splitting scheme |
|---|
| 22 | !! ts_wgt : set time-splitting weights for temporal averaging (or not) |
|---|
| 23 | !! ts_rst : read/write time-splitting fields in restart file |
|---|
| 24 | !!---------------------------------------------------------------------- |
|---|
| 25 | USE oce ! ocean dynamics and tracers |
|---|
| 26 | USE dom_oce ! ocean space and time domain |
|---|
| 27 | USE sbc_oce ! surface boundary condition: ocean |
|---|
| 28 | USE zdf_oce ! Bottom friction coefts |
|---|
| 29 | USE sbcisf ! ice shelf variable (fwfisf) |
|---|
| 30 | USE sbcapr ! surface boundary condition: atmospheric pressure |
|---|
| 31 | USE dynadv , ONLY: ln_dynadv_vec |
|---|
| 32 | USE phycst ! physical constants |
|---|
| 33 | USE dynvor ! vorticity term |
|---|
| 34 | USE wet_dry ! wetting/drying flux limter |
|---|
| 35 | USE bdy_oce , ONLY: ln_bdy |
|---|
| 36 | USE bdytides ! open boundary condition data |
|---|
| 37 | USE bdydyn2d ! open boundary conditions on barotropic variables |
|---|
| 38 | USE sbctide ! tides |
|---|
| 39 | USE updtide ! tide potential |
|---|
| 40 | ! |
|---|
| 41 | USE in_out_manager ! I/O manager |
|---|
| 42 | USE lib_mpp ! distributed memory computing library |
|---|
| 43 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
|---|
| 44 | USE prtctl ! Print control |
|---|
| 45 | USE iom ! IOM library |
|---|
| 46 | USE restart ! only for lrst_oce |
|---|
| 47 | USE wrk_nemo ! Memory Allocation |
|---|
| 48 | USE timing ! Timing |
|---|
| 49 | USE diatmb ! Top,middle,bottom output |
|---|
| 50 | #if defined key_agrif |
|---|
| 51 | USE agrif_opa_interp ! agrif |
|---|
| 52 | #endif |
|---|
| 53 | #if defined key_asminc |
|---|
| 54 | USE asminc ! Assimilation increment |
|---|
| 55 | #endif |
|---|
| 56 | |
|---|
| 57 | |
|---|
| 58 | IMPLICIT NONE |
|---|
| 59 | PRIVATE |
|---|
| 60 | |
|---|
| 61 | PUBLIC dyn_spg_ts ! routine called in dynspg.F90 |
|---|
| 62 | PUBLIC dyn_spg_ts_alloc ! " " " " |
|---|
| 63 | PUBLIC dyn_spg_ts_init ! " " " " |
|---|
| 64 | PUBLIC ts_rst ! " " " " |
|---|
| 65 | |
|---|
| 66 | INTEGER, SAVE :: icycle ! Number of barotropic sub-steps for each internal step nn_baro <= 2.5 nn_baro |
|---|
| 67 | REAL(wp),SAVE :: rdtbt ! Barotropic time step |
|---|
| 68 | |
|---|
| 69 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: wgtbtp1, wgtbtp2 !: 1st & 2nd weights used in time filtering of barotropic fields |
|---|
| 70 | |
|---|
| 71 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zwz !: ff/h at F points |
|---|
| 72 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ftnw, ftne !: triad of coriolis parameter |
|---|
| 73 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ftsw, ftse !: (only used with een vorticity scheme) |
|---|
| 74 | |
|---|
| 75 | !! Time filtered arrays at baroclinic time step: |
|---|
| 76 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: un_adv , vn_adv !: Advection vel. at "now" barocl. step |
|---|
| 77 | |
|---|
| 78 | !! * Substitutions |
|---|
| 79 | # include "vectopt_loop_substitute.h90" |
|---|
| 80 | !!---------------------------------------------------------------------- |
|---|
| 81 | !! NEMO/OPA 3.5 , NEMO Consortium (2013) |
|---|
| 82 | !! $Id$ |
|---|
| 83 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
|---|
| 84 | !!---------------------------------------------------------------------- |
|---|
| 85 | CONTAINS |
|---|
| 86 | |
|---|
| 87 | INTEGER FUNCTION dyn_spg_ts_alloc() |
|---|
| 88 | !!---------------------------------------------------------------------- |
|---|
| 89 | !! *** routine dyn_spg_ts_alloc *** |
|---|
| 90 | !!---------------------------------------------------------------------- |
|---|
| 91 | INTEGER :: ierr(3) |
|---|
| 92 | !!---------------------------------------------------------------------- |
|---|
| 93 | ierr(:) = 0 |
|---|
| 94 | ! |
|---|
| 95 | ALLOCATE( wgtbtp1(3*nn_baro), wgtbtp2(3*nn_baro), zwz(jpi,jpj), STAT=ierr(1) ) |
|---|
| 96 | ! |
|---|
| 97 | IF( ln_dynvor_een ) ALLOCATE( ftnw(jpi,jpj) , ftne(jpi,jpj) , & |
|---|
| 98 | & ftsw(jpi,jpj) , ftse(jpi,jpj) , STAT=ierr(2) ) |
|---|
| 99 | ! |
|---|
| 100 | ALLOCATE( un_adv(jpi,jpj), vn_adv(jpi,jpj) , STAT=ierr(3) ) |
|---|
| 101 | ! |
|---|
| 102 | dyn_spg_ts_alloc = MAXVAL( ierr(:) ) |
|---|
| 103 | ! |
|---|
| 104 | IF( lk_mpp ) CALL mpp_sum( dyn_spg_ts_alloc ) |
|---|
| 105 | IF( dyn_spg_ts_alloc /= 0 ) CALL ctl_warn('dyn_spg_ts_alloc: failed to allocate arrays') |
|---|
| 106 | ! |
|---|
| 107 | END FUNCTION dyn_spg_ts_alloc |
|---|
| 108 | |
|---|
| 109 | |
|---|
| 110 | SUBROUTINE dyn_spg_ts( kt ) |
|---|
| 111 | !!---------------------------------------------------------------------- |
|---|
| 112 | !! |
|---|
| 113 | !! ** Purpose : - Compute the now trend due to the explicit time stepping |
|---|
| 114 | !! of the quasi-linear barotropic system, and add it to the |
|---|
| 115 | !! general momentum trend. |
|---|
| 116 | !! |
|---|
| 117 | !! ** Method : - split-explicit schem (time splitting) : |
|---|
| 118 | !! Barotropic variables are advanced from internal time steps |
|---|
| 119 | !! "n" to "n+1" if ln_bt_fw=T |
|---|
| 120 | !! or from |
|---|
| 121 | !! "n-1" to "n+1" if ln_bt_fw=F |
|---|
| 122 | !! thanks to a generalized forward-backward time stepping (see ref. below). |
|---|
| 123 | !! |
|---|
| 124 | !! ** Action : |
|---|
| 125 | !! -Update the filtered free surface at step "n+1" : ssha |
|---|
| 126 | !! -Update filtered barotropic velocities at step "n+1" : ua_b, va_b |
|---|
| 127 | !! -Compute barotropic advective velocities at step "n" : un_adv, vn_adv |
|---|
| 128 | !! These are used to advect tracers and are compliant with discrete |
|---|
| 129 | !! continuity equation taken at the baroclinic time steps. This |
|---|
| 130 | !! ensures tracers conservation. |
|---|
| 131 | !! - (ua, va) momentum trend updated with barotropic component. |
|---|
| 132 | !! |
|---|
| 133 | !! References : Shchepetkin and McWilliams, Ocean Modelling, 2005. |
|---|
| 134 | !!--------------------------------------------------------------------- |
|---|
| 135 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
|---|
| 136 | ! |
|---|
| 137 | LOGICAL :: ll_fw_start ! if true, forward integration |
|---|
| 138 | LOGICAL :: ll_init ! if true, special startup of 2d equations |
|---|
| 139 | LOGICAL :: ll_tmp1, ll_tmp2 ! local logical variables used in W/D |
|---|
| 140 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
|---|
| 141 | INTEGER :: ikbu, ikbv, noffset ! local integers |
|---|
| 142 | INTEGER :: iktu, iktv ! local integers |
|---|
| 143 | REAL(wp) :: zmdi |
|---|
| 144 | REAL(wp) :: zraur, z1_2dt_b, z2dt_bf ! local scalars |
|---|
| 145 | REAL(wp) :: zx1, zy1, zx2, zy2 ! - - |
|---|
| 146 | REAL(wp) :: z1_12, z1_8, z1_4, z1_2 ! - - |
|---|
| 147 | REAL(wp) :: zu_spg, zv_spg ! - - |
|---|
| 148 | REAL(wp) :: zhura, zhvra ! - - |
|---|
| 149 | REAL(wp) :: za0, za1, za2, za3 ! - - |
|---|
| 150 | ! |
|---|
| 151 | REAL(wp), POINTER, DIMENSION(:,:) :: zsshp2_e |
|---|
| 152 | REAL(wp), POINTER, DIMENSION(:,:) :: zu_trd, zv_trd, zu_frc, zv_frc, zssh_frc |
|---|
| 153 | REAL(wp), POINTER, DIMENSION(:,:) :: zwx, zwy, zhdiv |
|---|
| 154 | REAL(wp), POINTER, DIMENSION(:,:) :: zhup2_e, zhvp2_e, zhust_e, zhvst_e |
|---|
| 155 | REAL(wp), POINTER, DIMENSION(:,:) :: zsshu_a, zsshv_a |
|---|
| 156 | REAL(wp), POINTER, DIMENSION(:,:) :: zhf |
|---|
| 157 | REAL(wp), POINTER, DIMENSION(:,:) :: zcpx, zcpy ! Wetting/Dying gravity filter coef. |
|---|
| 158 | REAL(wp), POINTER, DIMENSION(:,:) :: wduflt1, wdvflt1 ! Wetting/Dying velocity filter coef. |
|---|
| 159 | !!---------------------------------------------------------------------- |
|---|
| 160 | ! |
|---|
| 161 | IF( nn_timing == 1 ) CALL timing_start('dyn_spg_ts') |
|---|
| 162 | ! |
|---|
| 163 | ! !* Allocate temporary arrays |
|---|
| 164 | CALL wrk_alloc( jpi,jpj, zsshp2_e, zhdiv ) |
|---|
| 165 | CALL wrk_alloc( jpi,jpj, zu_trd, zv_trd) |
|---|
| 166 | CALL wrk_alloc( jpi,jpj, zwx, zwy, zssh_frc, zu_frc, zv_frc) |
|---|
| 167 | CALL wrk_alloc( jpi,jpj, zhup2_e, zhvp2_e, zhust_e, zhvst_e) |
|---|
| 168 | CALL wrk_alloc( jpi,jpj, zsshu_a, zsshv_a ) |
|---|
| 169 | CALL wrk_alloc( jpi,jpj, zhf ) |
|---|
| 170 | IF( ln_wd ) CALL wrk_alloc( jpi, jpj, zcpx, zcpy, wduflt1, wdvflt1 ) |
|---|
| 171 | ! |
|---|
| 172 | zmdi=1.e+20 ! missing data indicator for masking |
|---|
| 173 | ! !* Local constant initialization |
|---|
| 174 | z1_12 = 1._wp / 12._wp |
|---|
| 175 | z1_8 = 0.125_wp |
|---|
| 176 | z1_4 = 0.25_wp |
|---|
| 177 | z1_2 = 0.5_wp |
|---|
| 178 | zraur = 1._wp / rau0 |
|---|
| 179 | ! ! reciprocal of baroclinic time step |
|---|
| 180 | IF( kt == nit000 .AND. neuler == 0 ) THEN ; z2dt_bf = rdt |
|---|
| 181 | ELSE ; z2dt_bf = 2.0_wp * rdt |
|---|
| 182 | ENDIF |
|---|
| 183 | z1_2dt_b = 1.0_wp / z2dt_bf |
|---|
| 184 | ! |
|---|
| 185 | ll_init = ln_bt_av ! if no time averaging, then no specific restart |
|---|
| 186 | ll_fw_start = .FALSE. |
|---|
| 187 | ! ! time offset in steps for bdy data update |
|---|
| 188 | IF( .NOT.ln_bt_fw ) THEN ; noffset = - nn_baro |
|---|
| 189 | ELSE ; noffset = 0 |
|---|
| 190 | ENDIF |
|---|
| 191 | ! |
|---|
| 192 | IF( kt == nit000 ) THEN !* initialisation |
|---|
| 193 | ! |
|---|
| 194 | IF(lwp) WRITE(numout,*) |
|---|
| 195 | IF(lwp) WRITE(numout,*) 'dyn_spg_ts : surface pressure gradient trend' |
|---|
| 196 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~ free surface with time splitting' |
|---|
| 197 | IF(lwp) WRITE(numout,*) |
|---|
| 198 | ! |
|---|
| 199 | IF( neuler == 0 ) ll_init=.TRUE. |
|---|
| 200 | ! |
|---|
| 201 | IF( ln_bt_fw .OR. neuler == 0 ) THEN |
|---|
| 202 | ll_fw_start =.TRUE. |
|---|
| 203 | noffset = 0 |
|---|
| 204 | ELSE |
|---|
| 205 | ll_fw_start =.FALSE. |
|---|
| 206 | ENDIF |
|---|
| 207 | ! |
|---|
| 208 | ! Set averaging weights and cycle length: |
|---|
| 209 | CALL ts_wgt( ln_bt_av, ll_fw_start, icycle, wgtbtp1, wgtbtp2 ) |
|---|
| 210 | ! |
|---|
| 211 | ENDIF |
|---|
| 212 | ! |
|---|
| 213 | ! Set arrays to remove/compute coriolis trend. |
|---|
| 214 | ! Do it once at kt=nit000 if volume is fixed, else at each long time step. |
|---|
| 215 | ! Note that these arrays are also used during barotropic loop. These are however frozen |
|---|
| 216 | ! although they should be updated in the variable volume case. Not a big approximation. |
|---|
| 217 | ! To remove this approximation, copy lines below inside barotropic loop |
|---|
| 218 | ! and update depths at T-F points (ht and zhf resp.) at each barotropic time step |
|---|
| 219 | ! |
|---|
| 220 | IF( kt == nit000 .OR. .NOT.ln_linssh ) THEN |
|---|
| 221 | IF( ln_dynvor_een ) THEN !== EEN scheme ==! |
|---|
| 222 | SELECT CASE( nn_een_e3f ) !* ff/e3 at F-point |
|---|
| 223 | CASE ( 0 ) ! original formulation (masked averaging of e3t divided by 4) |
|---|
| 224 | DO jj = 1, jpjm1 |
|---|
| 225 | DO ji = 1, jpim1 |
|---|
| 226 | zwz(ji,jj) = ( ht_n(ji ,jj+1) + ht_n(ji+1,jj+1) + & |
|---|
| 227 | & ht_n(ji ,jj ) + ht_n(ji+1,jj ) ) * 0.25_wp |
|---|
| 228 | IF( zwz(ji,jj) /= 0._wp ) zwz(ji,jj) = ff(ji,jj) / zwz(ji,jj) |
|---|
| 229 | END DO |
|---|
| 230 | END DO |
|---|
| 231 | CASE ( 1 ) ! new formulation (masked averaging of e3t divided by the sum of mask) |
|---|
| 232 | DO jj = 1, jpjm1 |
|---|
| 233 | DO ji = 1, jpim1 |
|---|
| 234 | zwz(ji,jj) = ( ht_n(ji ,jj+1) + ht_n(ji+1,jj+1) + & |
|---|
| 235 | & ht_n(ji ,jj ) + ht_n(ji+1,jj ) ) & |
|---|
| 236 | & / ( MAX( 1._wp, tmask(ji ,jj+1, 1) + tmask(ji+1,jj+1, 1) + & |
|---|
| 237 | & tmask(ji ,jj , 1) + tmask(ji+1,jj , 1) ) ) |
|---|
| 238 | IF( zwz(ji,jj) /= 0._wp ) zwz(ji,jj) = ff(ji,jj) / zwz(ji,jj) |
|---|
| 239 | END DO |
|---|
| 240 | END DO |
|---|
| 241 | END SELECT |
|---|
| 242 | CALL lbc_lnk( zwz, 'F', 1._wp ) |
|---|
| 243 | ! |
|---|
| 244 | ftne(1,:) = 0._wp ; ftnw(1,:) = 0._wp ; ftse(1,:) = 0._wp ; ftsw(1,:) = 0._wp |
|---|
| 245 | DO jj = 2, jpj |
|---|
| 246 | DO ji = 2, jpi |
|---|
| 247 | ftne(ji,jj) = zwz(ji-1,jj ) + zwz(ji ,jj ) + zwz(ji ,jj-1) |
|---|
| 248 | ftnw(ji,jj) = zwz(ji-1,jj-1) + zwz(ji-1,jj ) + zwz(ji ,jj ) |
|---|
| 249 | ftse(ji,jj) = zwz(ji ,jj ) + zwz(ji ,jj-1) + zwz(ji-1,jj-1) |
|---|
| 250 | ftsw(ji,jj) = zwz(ji ,jj-1) + zwz(ji-1,jj-1) + zwz(ji-1,jj ) |
|---|
| 251 | END DO |
|---|
| 252 | END DO |
|---|
| 253 | ! |
|---|
| 254 | ELSE !== all other schemes (ENE, ENS, MIX) |
|---|
| 255 | zwz(:,:) = 0._wp |
|---|
| 256 | zhf(:,:) = 0._wp |
|---|
| 257 | IF ( .not. ln_sco ) THEN |
|---|
| 258 | |
|---|
| 259 | !!gm agree the JC comment : this should be done in a much clear way |
|---|
| 260 | |
|---|
| 261 | ! JC: It not clear yet what should be the depth at f-points over land in z-coordinate case |
|---|
| 262 | ! Set it to zero for the time being |
|---|
| 263 | ! IF( rn_hmin < 0._wp ) THEN ; jk = - INT( rn_hmin ) ! from a nb of level |
|---|
| 264 | ! ELSE ; jk = MINLOC( gdepw_0, mask = gdepw_0 > rn_hmin, dim = 1 ) ! from a depth |
|---|
| 265 | ! ENDIF |
|---|
| 266 | ! zhf(:,:) = gdepw_0(:,:,jk+1) |
|---|
| 267 | ELSE |
|---|
| 268 | zhf(:,:) = hbatf(:,:) |
|---|
| 269 | END IF |
|---|
| 270 | |
|---|
| 271 | DO jj = 1, jpjm1 |
|---|
| 272 | zhf(:,jj) = zhf(:,jj) * (1._wp- umask(:,jj,1) * umask(:,jj+1,1)) |
|---|
| 273 | END DO |
|---|
| 274 | |
|---|
| 275 | DO jk = 1, jpkm1 |
|---|
| 276 | DO jj = 1, jpjm1 |
|---|
| 277 | zhf(:,jj) = zhf(:,jj) + e3f_n(:,jj,jk) * umask(:,jj,jk) * umask(:,jj+1,jk) |
|---|
| 278 | END DO |
|---|
| 279 | END DO |
|---|
| 280 | CALL lbc_lnk( zhf, 'F', 1._wp ) |
|---|
| 281 | ! JC: TBC. hf should be greater than 0 |
|---|
| 282 | DO jj = 1, jpj |
|---|
| 283 | DO ji = 1, jpi |
|---|
| 284 | IF( zhf(ji,jj) /= 0._wp ) zwz(ji,jj) = 1._wp / zhf(ji,jj) ! zhf is actually hf here but it saves an array |
|---|
| 285 | END DO |
|---|
| 286 | END DO |
|---|
| 287 | zwz(:,:) = ff(:,:) * zwz(:,:) |
|---|
| 288 | ENDIF |
|---|
| 289 | ENDIF |
|---|
| 290 | ! |
|---|
| 291 | ! If forward start at previous time step, and centered integration, |
|---|
| 292 | ! then update averaging weights: |
|---|
| 293 | IF (.NOT.ln_bt_fw .AND.( neuler==0 .AND. kt==nit000+1 ) ) THEN |
|---|
| 294 | ll_fw_start=.FALSE. |
|---|
| 295 | CALL ts_wgt(ln_bt_av, ll_fw_start, icycle, wgtbtp1, wgtbtp2) |
|---|
| 296 | ENDIF |
|---|
| 297 | |
|---|
| 298 | ! ----------------------------------------------------------------------------- |
|---|
| 299 | ! Phase 1 : Coupling between general trend and barotropic estimates (1st step) |
|---|
| 300 | ! ----------------------------------------------------------------------------- |
|---|
| 301 | ! |
|---|
| 302 | ! |
|---|
| 303 | ! !* e3*d/dt(Ua) (Vertically integrated) |
|---|
| 304 | ! ! -------------------------------------------------- |
|---|
| 305 | zu_frc(:,:) = 0._wp |
|---|
| 306 | zv_frc(:,:) = 0._wp |
|---|
| 307 | ! |
|---|
| 308 | DO jk = 1, jpkm1 |
|---|
| 309 | zu_frc(:,:) = zu_frc(:,:) + e3u_n(:,:,jk) * ua(:,:,jk) * umask(:,:,jk) |
|---|
| 310 | zv_frc(:,:) = zv_frc(:,:) + e3v_n(:,:,jk) * va(:,:,jk) * vmask(:,:,jk) |
|---|
| 311 | END DO |
|---|
| 312 | ! |
|---|
| 313 | zu_frc(:,:) = zu_frc(:,:) * r1_hu_n(:,:) |
|---|
| 314 | zv_frc(:,:) = zv_frc(:,:) * r1_hv_n(:,:) |
|---|
| 315 | ! |
|---|
| 316 | ! |
|---|
| 317 | ! !* baroclinic momentum trend (remove the vertical mean trend) |
|---|
| 318 | DO jk = 1, jpkm1 ! ----------------------------------------------------------- |
|---|
| 319 | DO jj = 2, jpjm1 |
|---|
| 320 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 321 | ua(ji,jj,jk) = ua(ji,jj,jk) - zu_frc(ji,jj) * umask(ji,jj,jk) |
|---|
| 322 | va(ji,jj,jk) = va(ji,jj,jk) - zv_frc(ji,jj) * vmask(ji,jj,jk) |
|---|
| 323 | END DO |
|---|
| 324 | END DO |
|---|
| 325 | END DO |
|---|
| 326 | ! !* barotropic Coriolis trends (vorticity scheme dependent) |
|---|
| 327 | ! ! -------------------------------------------------------- |
|---|
| 328 | zwx(:,:) = un_b(:,:) * hu_n(:,:) * e2u(:,:) ! now fluxes |
|---|
| 329 | zwy(:,:) = vn_b(:,:) * hv_n(:,:) * e1v(:,:) |
|---|
| 330 | ! |
|---|
| 331 | IF( ln_dynvor_ene .OR. ln_dynvor_mix ) THEN ! energy conserving or mixed scheme |
|---|
| 332 | DO jj = 2, jpjm1 |
|---|
| 333 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 334 | zy1 = ( zwy(ji,jj-1) + zwy(ji+1,jj-1) ) * r1_e1u(ji,jj) |
|---|
| 335 | zy2 = ( zwy(ji,jj ) + zwy(ji+1,jj ) ) * r1_e1u(ji,jj) |
|---|
| 336 | zx1 = ( zwx(ji-1,jj) + zwx(ji-1,jj+1) ) * r1_e2v(ji,jj) |
|---|
| 337 | zx2 = ( zwx(ji ,jj) + zwx(ji ,jj+1) ) * r1_e2v(ji,jj) |
|---|
| 338 | ! energy conserving formulation for planetary vorticity term |
|---|
| 339 | zu_trd(ji,jj) = z1_4 * ( zwz(ji ,jj-1) * zy1 + zwz(ji,jj) * zy2 ) |
|---|
| 340 | zv_trd(ji,jj) =-z1_4 * ( zwz(ji-1,jj ) * zx1 + zwz(ji,jj) * zx2 ) |
|---|
| 341 | END DO |
|---|
| 342 | END DO |
|---|
| 343 | ! |
|---|
| 344 | ELSEIF ( ln_dynvor_ens ) THEN ! enstrophy conserving scheme |
|---|
| 345 | DO jj = 2, jpjm1 |
|---|
| 346 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 347 | zy1 = z1_8 * ( zwy(ji ,jj-1) + zwy(ji+1,jj-1) & |
|---|
| 348 | & + zwy(ji ,jj ) + zwy(ji+1,jj ) ) * r1_e1u(ji,jj) |
|---|
| 349 | zx1 = - z1_8 * ( zwx(ji-1,jj ) + zwx(ji-1,jj+1) & |
|---|
| 350 | & + zwx(ji ,jj ) + zwx(ji ,jj+1) ) * r1_e2v(ji,jj) |
|---|
| 351 | zu_trd(ji,jj) = zy1 * ( zwz(ji ,jj-1) + zwz(ji,jj) ) |
|---|
| 352 | zv_trd(ji,jj) = zx1 * ( zwz(ji-1,jj ) + zwz(ji,jj) ) |
|---|
| 353 | END DO |
|---|
| 354 | END DO |
|---|
| 355 | ! |
|---|
| 356 | ELSEIF ( ln_dynvor_een ) THEN ! enstrophy and energy conserving scheme |
|---|
| 357 | DO jj = 2, jpjm1 |
|---|
| 358 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 359 | zu_trd(ji,jj) = + z1_12 * r1_e1u(ji,jj) * ( ftne(ji,jj ) * zwy(ji ,jj ) & |
|---|
| 360 | & + ftnw(ji+1,jj) * zwy(ji+1,jj ) & |
|---|
| 361 | & + ftse(ji,jj ) * zwy(ji ,jj-1) & |
|---|
| 362 | & + ftsw(ji+1,jj) * zwy(ji+1,jj-1) ) |
|---|
| 363 | zv_trd(ji,jj) = - z1_12 * r1_e2v(ji,jj) * ( ftsw(ji,jj+1) * zwx(ji-1,jj+1) & |
|---|
| 364 | & + ftse(ji,jj+1) * zwx(ji ,jj+1) & |
|---|
| 365 | & + ftnw(ji,jj ) * zwx(ji-1,jj ) & |
|---|
| 366 | & + ftne(ji,jj ) * zwx(ji ,jj ) ) |
|---|
| 367 | END DO |
|---|
| 368 | END DO |
|---|
| 369 | ! |
|---|
| 370 | ENDIF |
|---|
| 371 | ! |
|---|
| 372 | ! !* Right-Hand-Side of the barotropic momentum equation |
|---|
| 373 | ! ! ---------------------------------------------------- |
|---|
| 374 | IF( .NOT.ln_linssh ) THEN ! Variable volume : remove surface pressure gradient |
|---|
| 375 | IF( ln_wd ) THEN ! Calculating and applying W/D gravity filters |
|---|
| 376 | wduflt1(:,:) = 1.0_wp |
|---|
| 377 | wdvflt1(:,:) = 1.0_wp |
|---|
| 378 | DO jj = 2, jpjm1 |
|---|
| 379 | DO ji = 2, jpim1 |
|---|
| 380 | ll_tmp1 = MIN(sshn(ji,jj), sshn(ji+1,jj)) > MAX(-bathy(ji,jj), -bathy(ji+1,jj)) & |
|---|
| 381 | & .and. MAX(sshn(ji,jj) + bathy(ji,jj), sshn(ji+1,jj) + bathy(ji+1,jj)) & |
|---|
| 382 | & > rn_wdmin1 + rn_wdmin2 |
|---|
| 383 | ll_tmp2 = MAX(sshn(ji,jj), sshn(ji+1,jj)) > MAX(-bathy(ji,jj), -bathy(ji+1,jj)) & |
|---|
| 384 | & + rn_wdmin1 + rn_wdmin2 |
|---|
| 385 | IF(ll_tmp1) THEN |
|---|
| 386 | zcpx(ji,jj) = 1.0_wp |
|---|
| 387 | ELSEIF(ll_tmp2) THEN |
|---|
| 388 | ! no worries about sshn(ji+1,jj)-sshn(ji,jj) = 0, it won't happen here |
|---|
| 389 | zcpx(ji,jj) = ABS((sshn(ji+1,jj) + bathy(ji+1,jj) - sshn(ji,jj) - bathy(ji,jj)) & |
|---|
| 390 | & /(sshn(ji+1,jj) - sshn(ji,jj))) |
|---|
| 391 | ELSE |
|---|
| 392 | zcpx(ji,jj) = 0._wp |
|---|
| 393 | wduflt1(ji,jj) = 0.0_wp |
|---|
| 394 | END IF |
|---|
| 395 | |
|---|
| 396 | ll_tmp1 = MIN(sshn(ji,jj), sshn(ji,jj+1)) > MAX(-bathy(ji,jj), -bathy(ji,jj+1)) & |
|---|
| 397 | & .and. MAX(sshn(ji,jj) + bathy(ji,jj), sshn(ji,jj+1) + bathy(ji,jj+1)) & |
|---|
| 398 | & > rn_wdmin1 + rn_wdmin2 |
|---|
| 399 | ll_tmp2 = MAX(sshn(ji,jj), sshn(ji,jj+1)) > MAX(-bathy(ji,jj), -bathy(ji,jj+1)) & |
|---|
| 400 | & + rn_wdmin1 + rn_wdmin2 |
|---|
| 401 | IF(ll_tmp1) THEN |
|---|
| 402 | zcpy(ji,jj) = 1.0_wp |
|---|
| 403 | ELSEIF(ll_tmp2) THEN |
|---|
| 404 | ! no worries about sshn(ji,jj+1)-sshn(ji,jj) = 0, it won't happen here |
|---|
| 405 | zcpy(ji,jj) = ABS((sshn(ji,jj+1) + bathy(ji,jj+1) - sshn(ji,jj) - bathy(ji,jj)) & |
|---|
| 406 | & /(sshn(ji,jj+1) - sshn(ji,jj))) |
|---|
| 407 | ELSE |
|---|
| 408 | zcpy(ji,jj) = 0._wp |
|---|
| 409 | wdvflt1(ji,jj) = 0.0_wp |
|---|
| 410 | ENDIF |
|---|
| 411 | |
|---|
| 412 | END DO |
|---|
| 413 | END DO |
|---|
| 414 | |
|---|
| 415 | CALL lbc_lnk( zcpx, 'U', 1._wp ) ; CALL lbc_lnk( zcpy, 'V', 1._wp ) |
|---|
| 416 | |
|---|
| 417 | DO jj = 2, jpjm1 |
|---|
| 418 | DO ji = 2, jpim1 |
|---|
| 419 | zu_trd(ji,jj) = ( zu_trd(ji,jj) - grav * ( sshn(ji+1,jj ) - sshn(ji ,jj ) ) & |
|---|
| 420 | & * r1_e1u(ji,jj) ) * zcpx(ji,jj) * wduflt1(ji,jj) |
|---|
| 421 | zv_trd(ji,jj) = ( zv_trd(ji,jj) - grav * ( sshn(ji ,jj+1) - sshn(ji ,jj ) ) & |
|---|
| 422 | & * r1_e2v(ji,jj) ) * zcpy(ji,jj) * wdvflt1(ji,jj) |
|---|
| 423 | END DO |
|---|
| 424 | END DO |
|---|
| 425 | |
|---|
| 426 | ELSE |
|---|
| 427 | |
|---|
| 428 | DO jj = 2, jpjm1 |
|---|
| 429 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 430 | zu_trd(ji,jj) = zu_trd(ji,jj) - grav * ( sshn(ji+1,jj ) - sshn(ji ,jj ) ) * r1_e1u(ji,jj) |
|---|
| 431 | zv_trd(ji,jj) = zv_trd(ji,jj) - grav * ( sshn(ji ,jj+1) - sshn(ji ,jj ) ) * r1_e2v(ji,jj) |
|---|
| 432 | END DO |
|---|
| 433 | END DO |
|---|
| 434 | ENDIF |
|---|
| 435 | |
|---|
| 436 | ENDIF |
|---|
| 437 | |
|---|
| 438 | DO jj = 2, jpjm1 ! Remove coriolis term (and possibly spg) from barotropic trend |
|---|
| 439 | DO ji = fs_2, fs_jpim1 |
|---|
| 440 | zu_frc(ji,jj) = zu_frc(ji,jj) - zu_trd(ji,jj) * ssumask(ji,jj) |
|---|
| 441 | zv_frc(ji,jj) = zv_frc(ji,jj) - zv_trd(ji,jj) * ssvmask(ji,jj) |
|---|
| 442 | END DO |
|---|
| 443 | END DO |
|---|
| 444 | ! |
|---|
| 445 | ! ! Add bottom stress contribution from baroclinic velocities: |
|---|
| 446 | IF (ln_bt_fw) THEN |
|---|
| 447 | DO jj = 2, jpjm1 |
|---|
| 448 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 449 | ikbu = mbku(ji,jj) |
|---|
| 450 | ikbv = mbkv(ji,jj) |
|---|
| 451 | zwx(ji,jj) = un(ji,jj,ikbu) - un_b(ji,jj) ! NOW bottom baroclinic velocities |
|---|
| 452 | zwy(ji,jj) = vn(ji,jj,ikbv) - vn_b(ji,jj) |
|---|
| 453 | END DO |
|---|
| 454 | END DO |
|---|
| 455 | ELSE |
|---|
| 456 | DO jj = 2, jpjm1 |
|---|
| 457 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 458 | ikbu = mbku(ji,jj) |
|---|
| 459 | ikbv = mbkv(ji,jj) |
|---|
| 460 | zwx(ji,jj) = ub(ji,jj,ikbu) - ub_b(ji,jj) ! BEFORE bottom baroclinic velocities |
|---|
| 461 | zwy(ji,jj) = vb(ji,jj,ikbv) - vb_b(ji,jj) |
|---|
| 462 | END DO |
|---|
| 463 | END DO |
|---|
| 464 | ENDIF |
|---|
| 465 | ! |
|---|
| 466 | ! Note that the "unclipped" bottom friction parameter is used even with explicit drag |
|---|
| 467 | IF( ln_wd ) THEN |
|---|
| 468 | zu_frc(:,:) = zu_frc(:,:) + MAX(r1_hu_n(:,:) * bfrua(:,:),-1._wp / rdtbt) * zwx(:,:) |
|---|
| 469 | zv_frc(:,:) = zv_frc(:,:) + MAX(r1_hv_n(:,:) * bfrva(:,:),-1._wp / rdtbt) * zwy(:,:) |
|---|
| 470 | ELSE |
|---|
| 471 | zu_frc(:,:) = zu_frc(:,:) + r1_hu_n(:,:) * bfrua(:,:) * zwx(:,:) |
|---|
| 472 | zv_frc(:,:) = zv_frc(:,:) + r1_hv_n(:,:) * bfrva(:,:) * zwy(:,:) |
|---|
| 473 | END IF |
|---|
| 474 | ! |
|---|
| 475 | ! ! Add top stress contribution from baroclinic velocities: |
|---|
| 476 | IF (ln_bt_fw) THEN |
|---|
| 477 | DO jj = 2, jpjm1 |
|---|
| 478 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 479 | iktu = miku(ji,jj) |
|---|
| 480 | iktv = mikv(ji,jj) |
|---|
| 481 | zwx(ji,jj) = un(ji,jj,iktu) - un_b(ji,jj) ! NOW top baroclinic velocities |
|---|
| 482 | zwy(ji,jj) = vn(ji,jj,iktv) - vn_b(ji,jj) |
|---|
| 483 | END DO |
|---|
| 484 | END DO |
|---|
| 485 | ELSE |
|---|
| 486 | DO jj = 2, jpjm1 |
|---|
| 487 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 488 | iktu = miku(ji,jj) |
|---|
| 489 | iktv = mikv(ji,jj) |
|---|
| 490 | zwx(ji,jj) = ub(ji,jj,iktu) - ub_b(ji,jj) ! BEFORE top baroclinic velocities |
|---|
| 491 | zwy(ji,jj) = vb(ji,jj,iktv) - vb_b(ji,jj) |
|---|
| 492 | END DO |
|---|
| 493 | END DO |
|---|
| 494 | ENDIF |
|---|
| 495 | ! |
|---|
| 496 | ! Note that the "unclipped" top friction parameter is used even with explicit drag |
|---|
| 497 | zu_frc(:,:) = zu_frc(:,:) + r1_hu_n(:,:) * tfrua(:,:) * zwx(:,:) |
|---|
| 498 | zv_frc(:,:) = zv_frc(:,:) + r1_hv_n(:,:) * tfrva(:,:) * zwy(:,:) |
|---|
| 499 | ! |
|---|
| 500 | IF (ln_bt_fw) THEN ! Add wind forcing |
|---|
| 501 | zu_frc(:,:) = zu_frc(:,:) + zraur * utau(:,:) * r1_hu_n(:,:) |
|---|
| 502 | zv_frc(:,:) = zv_frc(:,:) + zraur * vtau(:,:) * r1_hv_n(:,:) |
|---|
| 503 | ELSE |
|---|
| 504 | zu_frc(:,:) = zu_frc(:,:) + zraur * z1_2 * ( utau_b(:,:) + utau(:,:) ) * r1_hu_n(:,:) |
|---|
| 505 | zv_frc(:,:) = zv_frc(:,:) + zraur * z1_2 * ( vtau_b(:,:) + vtau(:,:) ) * r1_hv_n(:,:) |
|---|
| 506 | ENDIF |
|---|
| 507 | ! |
|---|
| 508 | IF ( ln_apr_dyn ) THEN ! Add atm pressure forcing |
|---|
| 509 | IF (ln_bt_fw) THEN |
|---|
| 510 | DO jj = 2, jpjm1 |
|---|
| 511 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 512 | zu_spg = grav * ( ssh_ib (ji+1,jj ) - ssh_ib (ji,jj) ) * r1_e1u(ji,jj) |
|---|
| 513 | zv_spg = grav * ( ssh_ib (ji ,jj+1) - ssh_ib (ji,jj) ) * r1_e2v(ji,jj) |
|---|
| 514 | zu_frc(ji,jj) = zu_frc(ji,jj) + zu_spg |
|---|
| 515 | zv_frc(ji,jj) = zv_frc(ji,jj) + zv_spg |
|---|
| 516 | END DO |
|---|
| 517 | END DO |
|---|
| 518 | ELSE |
|---|
| 519 | DO jj = 2, jpjm1 |
|---|
| 520 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 521 | zu_spg = grav * z1_2 * ( ssh_ib (ji+1,jj ) - ssh_ib (ji,jj) & |
|---|
| 522 | & + ssh_ibb(ji+1,jj ) - ssh_ibb(ji,jj) ) * r1_e1u(ji,jj) |
|---|
| 523 | zv_spg = grav * z1_2 * ( ssh_ib (ji ,jj+1) - ssh_ib (ji,jj) & |
|---|
| 524 | & + ssh_ibb(ji ,jj+1) - ssh_ibb(ji,jj) ) * r1_e2v(ji,jj) |
|---|
| 525 | zu_frc(ji,jj) = zu_frc(ji,jj) + zu_spg |
|---|
| 526 | zv_frc(ji,jj) = zv_frc(ji,jj) + zv_spg |
|---|
| 527 | END DO |
|---|
| 528 | END DO |
|---|
| 529 | ENDIF |
|---|
| 530 | ENDIF |
|---|
| 531 | ! !* Right-Hand-Side of the barotropic ssh equation |
|---|
| 532 | ! ! ----------------------------------------------- |
|---|
| 533 | ! ! Surface net water flux and rivers |
|---|
| 534 | IF (ln_bt_fw) THEN |
|---|
| 535 | zssh_frc(:,:) = zraur * ( emp(:,:) - rnf(:,:) + fwfisf(:,:) ) |
|---|
| 536 | ELSE |
|---|
| 537 | zssh_frc(:,:) = zraur * z1_2 * ( emp(:,:) + emp_b(:,:) - rnf(:,:) - rnf_b(:,:) & |
|---|
| 538 | & + fwfisf(:,:) + fwfisf_b(:,:) ) |
|---|
| 539 | ENDIF |
|---|
| 540 | #if defined key_asminc |
|---|
| 541 | ! ! Include the IAU weighted SSH increment |
|---|
| 542 | IF( lk_asminc .AND. ln_sshinc .AND. ln_asmiau ) THEN |
|---|
| 543 | zssh_frc(:,:) = zssh_frc(:,:) - ssh_iau(:,:) |
|---|
| 544 | ENDIF |
|---|
| 545 | #endif |
|---|
| 546 | ! !* Fill boundary data arrays for AGRIF |
|---|
| 547 | ! ! ------------------------------------ |
|---|
| 548 | #if defined key_agrif |
|---|
| 549 | IF( .NOT.Agrif_Root() ) CALL agrif_dta_ts( kt ) |
|---|
| 550 | #endif |
|---|
| 551 | ! |
|---|
| 552 | ! ----------------------------------------------------------------------- |
|---|
| 553 | ! Phase 2 : Integration of the barotropic equations |
|---|
| 554 | ! ----------------------------------------------------------------------- |
|---|
| 555 | ! |
|---|
| 556 | ! ! ==================== ! |
|---|
| 557 | ! ! Initialisations ! |
|---|
| 558 | ! ! ==================== ! |
|---|
| 559 | ! Initialize barotropic variables: |
|---|
| 560 | IF( ll_init )THEN |
|---|
| 561 | sshbb_e(:,:) = 0._wp |
|---|
| 562 | ubb_e (:,:) = 0._wp |
|---|
| 563 | vbb_e (:,:) = 0._wp |
|---|
| 564 | sshb_e (:,:) = 0._wp |
|---|
| 565 | ub_e (:,:) = 0._wp |
|---|
| 566 | vb_e (:,:) = 0._wp |
|---|
| 567 | ENDIF |
|---|
| 568 | |
|---|
| 569 | IF( ln_wd ) THEN !preserve the positivity of water depth |
|---|
| 570 | !ssh[b,n,a] should have already been processed for this |
|---|
| 571 | sshbb_e(:,:) = MAX(sshbb_e(:,:), rn_wdmin1 - bathy(:,:)) |
|---|
| 572 | sshb_e(:,:) = MAX(sshb_e(:,:) , rn_wdmin1 - bathy(:,:)) |
|---|
| 573 | ENDIF |
|---|
| 574 | ! |
|---|
| 575 | IF (ln_bt_fw) THEN ! FORWARD integration: start from NOW fields |
|---|
| 576 | sshn_e(:,:) = sshn(:,:) |
|---|
| 577 | un_e (:,:) = un_b(:,:) |
|---|
| 578 | vn_e (:,:) = vn_b(:,:) |
|---|
| 579 | ! |
|---|
| 580 | hu_e (:,:) = hu_n(:,:) |
|---|
| 581 | hv_e (:,:) = hv_n(:,:) |
|---|
| 582 | hur_e (:,:) = r1_hu_n(:,:) |
|---|
| 583 | hvr_e (:,:) = r1_hv_n(:,:) |
|---|
| 584 | ELSE ! CENTRED integration: start from BEFORE fields |
|---|
| 585 | sshn_e(:,:) = sshb(:,:) |
|---|
| 586 | un_e (:,:) = ub_b(:,:) |
|---|
| 587 | vn_e (:,:) = vb_b(:,:) |
|---|
| 588 | ! |
|---|
| 589 | hu_e (:,:) = hu_b(:,:) |
|---|
| 590 | hv_e (:,:) = hv_b(:,:) |
|---|
| 591 | hur_e (:,:) = r1_hu_b(:,:) |
|---|
| 592 | hvr_e (:,:) = r1_hv_b(:,:) |
|---|
| 593 | ENDIF |
|---|
| 594 | ! |
|---|
| 595 | ! |
|---|
| 596 | ! |
|---|
| 597 | ! Initialize sums: |
|---|
| 598 | ua_b (:,:) = 0._wp ! After barotropic velocities (or transport if flux form) |
|---|
| 599 | va_b (:,:) = 0._wp |
|---|
| 600 | ssha (:,:) = 0._wp ! Sum for after averaged sea level |
|---|
| 601 | un_adv(:,:) = 0._wp ! Sum for now transport issued from ts loop |
|---|
| 602 | vn_adv(:,:) = 0._wp |
|---|
| 603 | ! ! ==================== ! |
|---|
| 604 | DO jn = 1, icycle ! sub-time-step loop ! |
|---|
| 605 | ! ! ==================== ! |
|---|
| 606 | ! !* Update the forcing (BDY and tides) |
|---|
| 607 | ! ! ------------------ |
|---|
| 608 | ! Update only tidal forcing at open boundaries |
|---|
| 609 | IF( ln_bdy .AND. ln_tide ) CALL bdy_dta_tides( kt, kit=jn, time_offset= noffset+1 ) |
|---|
| 610 | IF( ln_tide_pot .AND. ln_tide ) CALL upd_tide ( kt, kit=jn, time_offset= noffset ) |
|---|
| 611 | ! |
|---|
| 612 | ! Set extrapolation coefficients for predictor step: |
|---|
| 613 | IF ((jn<3).AND.ll_init) THEN ! Forward |
|---|
| 614 | za1 = 1._wp |
|---|
| 615 | za2 = 0._wp |
|---|
| 616 | za3 = 0._wp |
|---|
| 617 | ELSE ! AB3-AM4 Coefficients: bet=0.281105 |
|---|
| 618 | za1 = 1.781105_wp ! za1 = 3/2 + bet |
|---|
| 619 | za2 = -1.06221_wp ! za2 = -(1/2 + 2*bet) |
|---|
| 620 | za3 = 0.281105_wp ! za3 = bet |
|---|
| 621 | ENDIF |
|---|
| 622 | |
|---|
| 623 | ! Extrapolate barotropic velocities at step jit+0.5: |
|---|
| 624 | ua_e(:,:) = za1 * un_e(:,:) + za2 * ub_e(:,:) + za3 * ubb_e(:,:) |
|---|
| 625 | va_e(:,:) = za1 * vn_e(:,:) + za2 * vb_e(:,:) + za3 * vbb_e(:,:) |
|---|
| 626 | |
|---|
| 627 | IF( .NOT.ln_linssh ) THEN !* Update ocean depth (variable volume case only) |
|---|
| 628 | ! ! ------------------ |
|---|
| 629 | ! Extrapolate Sea Level at step jit+0.5: |
|---|
| 630 | zsshp2_e(:,:) = za1 * sshn_e(:,:) + za2 * sshb_e(:,:) + za3 * sshbb_e(:,:) |
|---|
| 631 | ! |
|---|
| 632 | DO jj = 2, jpjm1 ! Sea Surface Height at u- & v-points |
|---|
| 633 | DO ji = 2, fs_jpim1 ! Vector opt. |
|---|
| 634 | zwx(ji,jj) = z1_2 * ssumask(ji,jj) * r1_e1e2u(ji,jj) & |
|---|
| 635 | & * ( e1e2t(ji ,jj) * zsshp2_e(ji ,jj) & |
|---|
| 636 | & + e1e2t(ji+1,jj) * zsshp2_e(ji+1,jj) ) |
|---|
| 637 | zwy(ji,jj) = z1_2 * ssvmask(ji,jj) * r1_e1e2v(ji,jj) & |
|---|
| 638 | & * ( e1e2t(ji,jj ) * zsshp2_e(ji,jj ) & |
|---|
| 639 | & + e1e2t(ji,jj+1) * zsshp2_e(ji,jj+1) ) |
|---|
| 640 | END DO |
|---|
| 641 | END DO |
|---|
| 642 | CALL lbc_lnk_multi( zwx, 'U', 1._wp, zwy, 'V', 1._wp ) |
|---|
| 643 | ! |
|---|
| 644 | zhup2_e (:,:) = hu_0(:,:) + zwx(:,:) ! Ocean depth at U- and V-points |
|---|
| 645 | zhvp2_e (:,:) = hv_0(:,:) + zwy(:,:) |
|---|
| 646 | IF( ln_wd ) THEN |
|---|
| 647 | zhup2_e(:,:) = MAX(zhup2_e (:,:), rn_wdmin1) |
|---|
| 648 | zhvp2_e(:,:) = MAX(zhvp2_e (:,:), rn_wdmin1) |
|---|
| 649 | END IF |
|---|
| 650 | ELSE |
|---|
| 651 | zhup2_e (:,:) = hu_n(:,:) |
|---|
| 652 | zhvp2_e (:,:) = hv_n(:,:) |
|---|
| 653 | ENDIF |
|---|
| 654 | ! !* after ssh |
|---|
| 655 | ! ! ----------- |
|---|
| 656 | ! One should enforce volume conservation at open boundaries here |
|---|
| 657 | ! considering fluxes below: |
|---|
| 658 | ! |
|---|
| 659 | zwx(:,:) = e2u(:,:) * ua_e(:,:) * zhup2_e(:,:) ! fluxes at jn+0.5 |
|---|
| 660 | zwy(:,:) = e1v(:,:) * va_e(:,:) * zhvp2_e(:,:) |
|---|
| 661 | ! |
|---|
| 662 | #if defined key_agrif |
|---|
| 663 | ! Set fluxes during predictor step to ensure volume conservation |
|---|
| 664 | IF( .NOT.Agrif_Root() .AND. ln_bt_fw ) THEN |
|---|
| 665 | IF((nbondi == -1).OR.(nbondi == 2)) THEN |
|---|
| 666 | DO jj=1,jpj |
|---|
| 667 | zwx(2,jj) = ubdy_w(jj) * e2u(2,jj) |
|---|
| 668 | END DO |
|---|
| 669 | ENDIF |
|---|
| 670 | IF((nbondi == 1).OR.(nbondi == 2)) THEN |
|---|
| 671 | DO jj=1,jpj |
|---|
| 672 | zwx(nlci-2,jj) = ubdy_e(jj) * e2u(nlci-2,jj) |
|---|
| 673 | END DO |
|---|
| 674 | ENDIF |
|---|
| 675 | IF((nbondj == -1).OR.(nbondj == 2)) THEN |
|---|
| 676 | DO ji=1,jpi |
|---|
| 677 | zwy(ji,2) = vbdy_s(ji) * e1v(ji,2) |
|---|
| 678 | END DO |
|---|
| 679 | ENDIF |
|---|
| 680 | IF((nbondj == 1).OR.(nbondj == 2)) THEN |
|---|
| 681 | DO ji=1,jpi |
|---|
| 682 | zwy(ji,nlcj-2) = vbdy_n(ji) * e1v(ji,nlcj-2) |
|---|
| 683 | END DO |
|---|
| 684 | ENDIF |
|---|
| 685 | ENDIF |
|---|
| 686 | #endif |
|---|
| 687 | IF( ln_wd ) CALL wad_lmt_bt(zwx, zwy, sshn_e, zssh_frc, rdtbt) |
|---|
| 688 | ! |
|---|
| 689 | ! Sum over sub-time-steps to compute advective velocities |
|---|
| 690 | za2 = wgtbtp2(jn) |
|---|
| 691 | un_adv(:,:) = un_adv(:,:) + za2 * zwx(:,:) * r1_e2u(:,:) |
|---|
| 692 | vn_adv(:,:) = vn_adv(:,:) + za2 * zwy(:,:) * r1_e1v(:,:) |
|---|
| 693 | ! |
|---|
| 694 | ! Set next sea level: |
|---|
| 695 | DO jj = 2, jpjm1 |
|---|
| 696 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 697 | zhdiv(ji,jj) = ( zwx(ji,jj) - zwx(ji-1,jj) & |
|---|
| 698 | & + zwy(ji,jj) - zwy(ji,jj-1) ) * r1_e1e2t(ji,jj) |
|---|
| 699 | END DO |
|---|
| 700 | END DO |
|---|
| 701 | ssha_e(:,:) = ( sshn_e(:,:) - rdtbt * ( zssh_frc(:,:) + zhdiv(:,:) ) ) * ssmask(:,:) |
|---|
| 702 | IF( ln_wd ) ssha_e(:,:) = MAX(ssha_e(:,:), rn_wdmin1 - bathy(:,:)) |
|---|
| 703 | CALL lbc_lnk( ssha_e, 'T', 1._wp ) |
|---|
| 704 | |
|---|
| 705 | ! Duplicate sea level across open boundaries (this is only cosmetic if linssh=T) |
|---|
| 706 | IF( ln_bdy ) CALL bdy_ssh( ssha_e ) |
|---|
| 707 | |
|---|
| 708 | #if defined key_agrif |
|---|
| 709 | IF( .NOT.Agrif_Root() ) CALL agrif_ssh_ts( jn ) |
|---|
| 710 | #endif |
|---|
| 711 | ! |
|---|
| 712 | ! Sea Surface Height at u-,v-points (vvl case only) |
|---|
| 713 | IF( .NOT.ln_linssh ) THEN |
|---|
| 714 | DO jj = 2, jpjm1 |
|---|
| 715 | DO ji = 2, jpim1 ! NO Vector Opt. |
|---|
| 716 | zsshu_a(ji,jj) = z1_2 * ssumask(ji,jj) * r1_e1e2u(ji,jj) & |
|---|
| 717 | & * ( e1e2t(ji ,jj ) * ssha_e(ji ,jj ) & |
|---|
| 718 | & + e1e2t(ji+1,jj ) * ssha_e(ji+1,jj ) ) |
|---|
| 719 | zsshv_a(ji,jj) = z1_2 * ssvmask(ji,jj) * r1_e1e2v(ji,jj) & |
|---|
| 720 | & * ( e1e2t(ji ,jj ) * ssha_e(ji ,jj ) & |
|---|
| 721 | & + e1e2t(ji ,jj+1) * ssha_e(ji ,jj+1) ) |
|---|
| 722 | END DO |
|---|
| 723 | END DO |
|---|
| 724 | CALL lbc_lnk_multi( zsshu_a, 'U', 1._wp, zsshv_a, 'V', 1._wp ) |
|---|
| 725 | ENDIF |
|---|
| 726 | ! |
|---|
| 727 | ! Half-step back interpolation of SSH for surface pressure computation: |
|---|
| 728 | !---------------------------------------------------------------------- |
|---|
| 729 | IF ((jn==1).AND.ll_init) THEN |
|---|
| 730 | za0=1._wp ! Forward-backward |
|---|
| 731 | za1=0._wp |
|---|
| 732 | za2=0._wp |
|---|
| 733 | za3=0._wp |
|---|
| 734 | ELSEIF ((jn==2).AND.ll_init) THEN ! AB2-AM3 Coefficients; bet=0 ; gam=-1/6 ; eps=1/12 |
|---|
| 735 | za0= 1.0833333333333_wp ! za0 = 1-gam-eps |
|---|
| 736 | za1=-0.1666666666666_wp ! za1 = gam |
|---|
| 737 | za2= 0.0833333333333_wp ! za2 = eps |
|---|
| 738 | za3= 0._wp |
|---|
| 739 | ELSE ! AB3-AM4 Coefficients; bet=0.281105 ; eps=0.013 ; gam=0.0880 |
|---|
| 740 | za0=0.614_wp ! za0 = 1/2 + gam + 2*eps |
|---|
| 741 | za1=0.285_wp ! za1 = 1/2 - 2*gam - 3*eps |
|---|
| 742 | za2=0.088_wp ! za2 = gam |
|---|
| 743 | za3=0.013_wp ! za3 = eps |
|---|
| 744 | ENDIF |
|---|
| 745 | ! |
|---|
| 746 | zsshp2_e(:,:) = za0 * ssha_e(:,:) + za1 * sshn_e (:,:) & |
|---|
| 747 | & + za2 * sshb_e(:,:) + za3 * sshbb_e(:,:) |
|---|
| 748 | IF( ln_wd ) THEN ! Calculating and applying W/D gravity filters |
|---|
| 749 | wduflt1(:,:) = 1._wp |
|---|
| 750 | wdvflt1(:,:) = 1._wp |
|---|
| 751 | DO jj = 2, jpjm1 |
|---|
| 752 | DO ji = 2, jpim1 |
|---|
| 753 | ll_tmp1 = MIN( zsshp2_e(ji,jj), zsshp2_e(ji+1,jj) ) > MAX( -bathy(ji,jj), -bathy(ji+1,jj) ) & |
|---|
| 754 | & .AND. MAX( zsshp2_e(ji,jj) + bathy(ji,jj), zsshp2_e(ji+1,jj) + bathy(ji+1,jj) ) & |
|---|
| 755 | & > rn_wdmin1 + rn_wdmin2 |
|---|
| 756 | ll_tmp2 = MAX( zsshp2_e(ji,jj), zsshp2_e(ji+1,jj) ) > MAX( -bathy(ji,jj), -bathy(ji+1,jj) ) & |
|---|
| 757 | & + rn_wdmin1 + rn_wdmin2 |
|---|
| 758 | IF(ll_tmp1) THEN |
|---|
| 759 | zcpx(ji,jj) = 1._wp |
|---|
| 760 | ELSE IF(ll_tmp2) THEN |
|---|
| 761 | ! no worries about zsshp2_e(ji+1,jj)-zsshp2_e(ji,jj) = 0, it won't happen here |
|---|
| 762 | zcpx(ji,jj) = ABS( (zsshp2_e(ji+1,jj) + bathy(ji+1,jj) - zsshp2_e(ji,jj) - bathy(ji,jj)) & |
|---|
| 763 | & / (zsshp2_e(ji+1,jj) - zsshp2_e(ji,jj)) ) |
|---|
| 764 | ELSE |
|---|
| 765 | zcpx(ji,jj) = 0._wp |
|---|
| 766 | wduflt1(ji,jj) = 0._wp |
|---|
| 767 | END IF |
|---|
| 768 | |
|---|
| 769 | ll_tmp1 = MIN( zsshp2_e(ji,jj), zsshp2_e(ji,jj+1) ) > MAX( -bathy(ji,jj), -bathy(ji,jj+1) ) & |
|---|
| 770 | & .AND. MAX( zsshp2_e(ji,jj) + bathy(ji,jj), zsshp2_e(ji,jj+1) + bathy(ji,jj+1) ) & |
|---|
| 771 | & > rn_wdmin1 + rn_wdmin2 |
|---|
| 772 | ll_tmp2 = MAX( zsshp2_e(ji,jj), zsshp2_e(ji,jj+1) ) > MAX( -bathy(ji,jj), -bathy(ji,jj+1) ) & |
|---|
| 773 | & + rn_wdmin1 + rn_wdmin2 |
|---|
| 774 | IF(ll_tmp1) THEN |
|---|
| 775 | zcpy(ji,jj) = 1._wp |
|---|
| 776 | ELSE IF(ll_tmp2) THEN |
|---|
| 777 | ! no worries about zsshp2_e(ji,jj+1)-zsshp2_e(ji,jj) = 0, it won't happen here |
|---|
| 778 | zcpy(ji,jj) = ABS( (zsshp2_e(ji,jj+1) + bathy(ji,jj+1) - zsshp2_e(ji,jj) - bathy(ji,jj)) & |
|---|
| 779 | & / (zsshp2_e(ji,jj+1) - zsshp2_e(ji,jj)) ) |
|---|
| 780 | ELSE |
|---|
| 781 | zcpy(ji,jj) = 0._wp |
|---|
| 782 | wdvflt1(ji,jj) = 0._wp |
|---|
| 783 | END IF |
|---|
| 784 | END DO |
|---|
| 785 | END DO |
|---|
| 786 | CALL lbc_lnk( zcpx, 'U', 1._wp ) ; CALL lbc_lnk( zcpy, 'V', 1._wp ) |
|---|
| 787 | ENDIF |
|---|
| 788 | ! |
|---|
| 789 | ! Compute associated depths at U and V points: |
|---|
| 790 | IF( .NOT.ln_linssh .AND. .NOT.ln_dynadv_vec ) THEN !* Vector form |
|---|
| 791 | ! |
|---|
| 792 | DO jj = 2, jpjm1 |
|---|
| 793 | DO ji = 2, jpim1 |
|---|
| 794 | zx1 = z1_2 * ssumask(ji ,jj) * r1_e1e2u(ji ,jj) & |
|---|
| 795 | & * ( e1e2t(ji ,jj ) * zsshp2_e(ji ,jj) & |
|---|
| 796 | & + e1e2t(ji+1,jj ) * zsshp2_e(ji+1,jj ) ) |
|---|
| 797 | zy1 = z1_2 * ssvmask(ji ,jj) * r1_e1e2v(ji ,jj ) & |
|---|
| 798 | & * ( e1e2t(ji ,jj ) * zsshp2_e(ji ,jj ) & |
|---|
| 799 | & + e1e2t(ji ,jj+1) * zsshp2_e(ji ,jj+1) ) |
|---|
| 800 | zhust_e(ji,jj) = hu_0(ji,jj) + zx1 |
|---|
| 801 | zhvst_e(ji,jj) = hv_0(ji,jj) + zy1 |
|---|
| 802 | END DO |
|---|
| 803 | END DO |
|---|
| 804 | |
|---|
| 805 | IF( ln_wd ) THEN |
|---|
| 806 | zhust_e(:,:) = MAX(zhust_e (:,:), rn_wdmin1 ) |
|---|
| 807 | zhvst_e(:,:) = MAX(zhvst_e (:,:), rn_wdmin1 ) |
|---|
| 808 | END IF |
|---|
| 809 | |
|---|
| 810 | ENDIF |
|---|
| 811 | ! |
|---|
| 812 | ! Add Coriolis trend: |
|---|
| 813 | ! zwz array below or triads normally depend on sea level with ln_linssh=F and should be updated |
|---|
| 814 | ! at each time step. We however keep them constant here for optimization. |
|---|
| 815 | ! Recall that zwx and zwy arrays hold fluxes at this stage: |
|---|
| 816 | ! zwx(:,:) = e2u(:,:) * ua_e(:,:) * zhup2_e(:,:) ! fluxes at jn+0.5 |
|---|
| 817 | ! zwy(:,:) = e1v(:,:) * va_e(:,:) * zhvp2_e(:,:) |
|---|
| 818 | ! |
|---|
| 819 | IF( ln_dynvor_ene .OR. ln_dynvor_mix ) THEN !== energy conserving or mixed scheme ==! |
|---|
| 820 | DO jj = 2, jpjm1 |
|---|
| 821 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 822 | zy1 = ( zwy(ji ,jj-1) + zwy(ji+1,jj-1) ) * r1_e1u(ji,jj) |
|---|
| 823 | zy2 = ( zwy(ji ,jj ) + zwy(ji+1,jj ) ) * r1_e1u(ji,jj) |
|---|
| 824 | zx1 = ( zwx(ji-1,jj ) + zwx(ji-1,jj+1) ) * r1_e2v(ji,jj) |
|---|
| 825 | zx2 = ( zwx(ji ,jj ) + zwx(ji ,jj+1) ) * r1_e2v(ji,jj) |
|---|
| 826 | zu_trd(ji,jj) = z1_4 * ( zwz(ji ,jj-1) * zy1 + zwz(ji,jj) * zy2 ) |
|---|
| 827 | zv_trd(ji,jj) =-z1_4 * ( zwz(ji-1,jj ) * zx1 + zwz(ji,jj) * zx2 ) |
|---|
| 828 | END DO |
|---|
| 829 | END DO |
|---|
| 830 | ! |
|---|
| 831 | ELSEIF ( ln_dynvor_ens ) THEN !== enstrophy conserving scheme ==! |
|---|
| 832 | DO jj = 2, jpjm1 |
|---|
| 833 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 834 | zy1 = z1_8 * ( zwy(ji ,jj-1) + zwy(ji+1,jj-1) & |
|---|
| 835 | & + zwy(ji ,jj ) + zwy(ji+1,jj ) ) * r1_e1u(ji,jj) |
|---|
| 836 | zx1 = - z1_8 * ( zwx(ji-1,jj ) + zwx(ji-1,jj+1) & |
|---|
| 837 | & + zwx(ji ,jj ) + zwx(ji ,jj+1) ) * r1_e2v(ji,jj) |
|---|
| 838 | zu_trd(ji,jj) = zy1 * ( zwz(ji ,jj-1) + zwz(ji,jj) ) |
|---|
| 839 | zv_trd(ji,jj) = zx1 * ( zwz(ji-1,jj ) + zwz(ji,jj) ) |
|---|
| 840 | END DO |
|---|
| 841 | END DO |
|---|
| 842 | ! |
|---|
| 843 | ELSEIF ( ln_dynvor_een ) THEN !== energy and enstrophy conserving scheme ==! |
|---|
| 844 | DO jj = 2, jpjm1 |
|---|
| 845 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 846 | zu_trd(ji,jj) = + z1_12 * r1_e1u(ji,jj) * ( ftne(ji,jj ) * zwy(ji ,jj ) & |
|---|
| 847 | & + ftnw(ji+1,jj) * zwy(ji+1,jj ) & |
|---|
| 848 | & + ftse(ji,jj ) * zwy(ji ,jj-1) & |
|---|
| 849 | & + ftsw(ji+1,jj) * zwy(ji+1,jj-1) ) |
|---|
| 850 | zv_trd(ji,jj) = - z1_12 * r1_e2v(ji,jj) * ( ftsw(ji,jj+1) * zwx(ji-1,jj+1) & |
|---|
| 851 | & + ftse(ji,jj+1) * zwx(ji ,jj+1) & |
|---|
| 852 | & + ftnw(ji,jj ) * zwx(ji-1,jj ) & |
|---|
| 853 | & + ftne(ji,jj ) * zwx(ji ,jj ) ) |
|---|
| 854 | END DO |
|---|
| 855 | END DO |
|---|
| 856 | ! |
|---|
| 857 | ENDIF |
|---|
| 858 | ! |
|---|
| 859 | ! Add tidal astronomical forcing if defined |
|---|
| 860 | IF ( ln_tide.AND.ln_tide_pot ) THEN |
|---|
| 861 | DO jj = 2, jpjm1 |
|---|
| 862 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 863 | zu_spg = grav * ( pot_astro(ji+1,jj) - pot_astro(ji,jj) ) * r1_e1u(ji,jj) |
|---|
| 864 | zv_spg = grav * ( pot_astro(ji,jj+1) - pot_astro(ji,jj) ) * r1_e2v(ji,jj) |
|---|
| 865 | zu_trd(ji,jj) = zu_trd(ji,jj) + zu_spg |
|---|
| 866 | zv_trd(ji,jj) = zv_trd(ji,jj) + zv_spg |
|---|
| 867 | END DO |
|---|
| 868 | END DO |
|---|
| 869 | ENDIF |
|---|
| 870 | ! |
|---|
| 871 | ! Add bottom stresses: |
|---|
| 872 | zu_trd(:,:) = zu_trd(:,:) + bfrua(:,:) * un_e(:,:) * hur_e(:,:) |
|---|
| 873 | zv_trd(:,:) = zv_trd(:,:) + bfrva(:,:) * vn_e(:,:) * hvr_e(:,:) |
|---|
| 874 | ! |
|---|
| 875 | ! Add top stresses: |
|---|
| 876 | zu_trd(:,:) = zu_trd(:,:) + tfrua(:,:) * un_e(:,:) * hur_e(:,:) |
|---|
| 877 | zv_trd(:,:) = zv_trd(:,:) + tfrva(:,:) * vn_e(:,:) * hvr_e(:,:) |
|---|
| 878 | ! |
|---|
| 879 | ! Surface pressure trend: |
|---|
| 880 | |
|---|
| 881 | IF( ln_wd ) THEN |
|---|
| 882 | DO jj = 2, jpjm1 |
|---|
| 883 | DO ji = 2, jpim1 |
|---|
| 884 | ! Add surface pressure gradient |
|---|
| 885 | zu_spg = - grav * ( zsshp2_e(ji+1,jj) - zsshp2_e(ji,jj) ) * r1_e1u(ji,jj) |
|---|
| 886 | zv_spg = - grav * ( zsshp2_e(ji,jj+1) - zsshp2_e(ji,jj) ) * r1_e2v(ji,jj) |
|---|
| 887 | zwx(ji,jj) = zu_spg * zcpx(ji,jj) |
|---|
| 888 | zwy(ji,jj) = zv_spg * zcpy(ji,jj) |
|---|
| 889 | END DO |
|---|
| 890 | END DO |
|---|
| 891 | ELSE |
|---|
| 892 | DO jj = 2, jpjm1 |
|---|
| 893 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 894 | ! Add surface pressure gradient |
|---|
| 895 | zu_spg = - grav * ( zsshp2_e(ji+1,jj) - zsshp2_e(ji,jj) ) * r1_e1u(ji,jj) |
|---|
| 896 | zv_spg = - grav * ( zsshp2_e(ji,jj+1) - zsshp2_e(ji,jj) ) * r1_e2v(ji,jj) |
|---|
| 897 | zwx(ji,jj) = zu_spg |
|---|
| 898 | zwy(ji,jj) = zv_spg |
|---|
| 899 | END DO |
|---|
| 900 | END DO |
|---|
| 901 | END IF |
|---|
| 902 | |
|---|
| 903 | ! |
|---|
| 904 | ! Set next velocities: |
|---|
| 905 | IF( ln_dynadv_vec .OR. ln_linssh ) THEN !* Vector form |
|---|
| 906 | DO jj = 2, jpjm1 |
|---|
| 907 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 908 | ua_e(ji,jj) = ( un_e(ji,jj) & |
|---|
| 909 | & + rdtbt * ( zwx(ji,jj) & |
|---|
| 910 | & + zu_trd(ji,jj) & |
|---|
| 911 | & + zu_frc(ji,jj) ) & |
|---|
| 912 | & ) * ssumask(ji,jj) |
|---|
| 913 | |
|---|
| 914 | va_e(ji,jj) = ( vn_e(ji,jj) & |
|---|
| 915 | & + rdtbt * ( zwy(ji,jj) & |
|---|
| 916 | & + zv_trd(ji,jj) & |
|---|
| 917 | & + zv_frc(ji,jj) ) & |
|---|
| 918 | & ) * ssvmask(ji,jj) |
|---|
| 919 | END DO |
|---|
| 920 | END DO |
|---|
| 921 | ! |
|---|
| 922 | ELSE !* Flux form |
|---|
| 923 | DO jj = 2, jpjm1 |
|---|
| 924 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 925 | |
|---|
| 926 | IF( ln_wd ) THEN |
|---|
| 927 | zhura = MAX(hu_0(ji,jj) + zsshu_a(ji,jj), rn_wdmin1) |
|---|
| 928 | zhvra = MAX(hv_0(ji,jj) + zsshv_a(ji,jj), rn_wdmin1) |
|---|
| 929 | ELSE |
|---|
| 930 | zhura = hu_0(ji,jj) + zsshu_a(ji,jj) |
|---|
| 931 | zhvra = hv_0(ji,jj) + zsshv_a(ji,jj) |
|---|
| 932 | END IF |
|---|
| 933 | zhura = ssumask(ji,jj)/(zhura + 1._wp - ssumask(ji,jj)) |
|---|
| 934 | zhvra = ssvmask(ji,jj)/(zhvra + 1._wp - ssvmask(ji,jj)) |
|---|
| 935 | |
|---|
| 936 | ua_e(ji,jj) = ( hu_e(ji,jj) * un_e(ji,jj) & |
|---|
| 937 | & + rdtbt * ( zhust_e(ji,jj) * zwx(ji,jj) & |
|---|
| 938 | & + zhup2_e(ji,jj) * zu_trd(ji,jj) & |
|---|
| 939 | & + hu_n(ji,jj) * zu_frc(ji,jj) ) & |
|---|
| 940 | & ) * zhura |
|---|
| 941 | |
|---|
| 942 | va_e(ji,jj) = ( hv_e(ji,jj) * vn_e(ji,jj) & |
|---|
| 943 | & + rdtbt * ( zhvst_e(ji,jj) * zwy(ji,jj) & |
|---|
| 944 | & + zhvp2_e(ji,jj) * zv_trd(ji,jj) & |
|---|
| 945 | & + hv_n(ji,jj) * zv_frc(ji,jj) ) & |
|---|
| 946 | & ) * zhvra |
|---|
| 947 | END DO |
|---|
| 948 | END DO |
|---|
| 949 | ENDIF |
|---|
| 950 | ! |
|---|
| 951 | IF( .NOT.ln_linssh ) THEN !* Update ocean depth (variable volume case only) |
|---|
| 952 | IF( ln_wd ) THEN |
|---|
| 953 | hu_e (:,:) = MAX(hu_0(:,:) + zsshu_a(:,:), rn_wdmin1) |
|---|
| 954 | hv_e (:,:) = MAX(hv_0(:,:) + zsshv_a(:,:), rn_wdmin1) |
|---|
| 955 | ELSE |
|---|
| 956 | hu_e (:,:) = hu_0(:,:) + zsshu_a(:,:) |
|---|
| 957 | hv_e (:,:) = hv_0(:,:) + zsshv_a(:,:) |
|---|
| 958 | END IF |
|---|
| 959 | hur_e(:,:) = ssumask(:,:) / ( hu_e(:,:) + 1._wp - ssumask(:,:) ) |
|---|
| 960 | hvr_e(:,:) = ssvmask(:,:) / ( hv_e(:,:) + 1._wp - ssvmask(:,:) ) |
|---|
| 961 | ! |
|---|
| 962 | ENDIF |
|---|
| 963 | ! !* domain lateral boundary |
|---|
| 964 | CALL lbc_lnk_multi( ua_e, 'U', -1._wp, va_e , 'V', -1._wp ) |
|---|
| 965 | ! |
|---|
| 966 | ! ! open boundaries |
|---|
| 967 | IF( ln_bdy ) CALL bdy_dyn2d( jn, ua_e, va_e, un_e, vn_e, hur_e, hvr_e, ssha_e ) |
|---|
| 968 | |
|---|
| 969 | #if defined key_agrif |
|---|
| 970 | IF( .NOT.Agrif_Root() ) CALL agrif_dyn_ts( jn ) ! Agrif |
|---|
| 971 | #endif |
|---|
| 972 | ! !* Swap |
|---|
| 973 | ! ! ---- |
|---|
| 974 | ubb_e (:,:) = ub_e (:,:) |
|---|
| 975 | ub_e (:,:) = un_e (:,:) |
|---|
| 976 | un_e (:,:) = ua_e (:,:) |
|---|
| 977 | ! |
|---|
| 978 | vbb_e (:,:) = vb_e (:,:) |
|---|
| 979 | vb_e (:,:) = vn_e (:,:) |
|---|
| 980 | vn_e (:,:) = va_e (:,:) |
|---|
| 981 | ! |
|---|
| 982 | sshbb_e(:,:) = sshb_e(:,:) |
|---|
| 983 | sshb_e (:,:) = sshn_e(:,:) |
|---|
| 984 | sshn_e (:,:) = ssha_e(:,:) |
|---|
| 985 | |
|---|
| 986 | ! !* Sum over whole bt loop |
|---|
| 987 | ! ! ---------------------- |
|---|
| 988 | za1 = wgtbtp1(jn) |
|---|
| 989 | IF( ln_dynadv_vec .OR. ln_linssh ) THEN ! Sum velocities |
|---|
| 990 | ua_b (:,:) = ua_b (:,:) + za1 * ua_e (:,:) |
|---|
| 991 | va_b (:,:) = va_b (:,:) + za1 * va_e (:,:) |
|---|
| 992 | ELSE ! Sum transports |
|---|
| 993 | ua_b (:,:) = ua_b (:,:) + za1 * ua_e (:,:) * hu_e (:,:) |
|---|
| 994 | va_b (:,:) = va_b (:,:) + za1 * va_e (:,:) * hv_e (:,:) |
|---|
| 995 | ENDIF |
|---|
| 996 | ! ! Sum sea level |
|---|
| 997 | ssha(:,:) = ssha(:,:) + za1 * ssha_e(:,:) |
|---|
| 998 | ! ! ==================== ! |
|---|
| 999 | END DO ! end loop ! |
|---|
| 1000 | ! ! ==================== ! |
|---|
| 1001 | ! ----------------------------------------------------------------------------- |
|---|
| 1002 | ! Phase 3. update the general trend with the barotropic trend |
|---|
| 1003 | ! ----------------------------------------------------------------------------- |
|---|
| 1004 | ! |
|---|
| 1005 | ! Set advection velocity correction: |
|---|
| 1006 | zwx(:,:) = un_adv(:,:) |
|---|
| 1007 | zwy(:,:) = vn_adv(:,:) |
|---|
| 1008 | IF( ( kt == nit000 .AND. neuler==0 ) .OR. .NOT.ln_bt_fw ) THEN |
|---|
| 1009 | un_adv(:,:) = zwx(:,:) * r1_hu_n(:,:) |
|---|
| 1010 | vn_adv(:,:) = zwy(:,:) * r1_hv_n(:,:) |
|---|
| 1011 | ELSE |
|---|
| 1012 | un_adv(:,:) = z1_2 * ( ub2_b(:,:) + zwx(:,:) ) * r1_hu_n(:,:) |
|---|
| 1013 | vn_adv(:,:) = z1_2 * ( vb2_b(:,:) + zwy(:,:) ) * r1_hv_n(:,:) |
|---|
| 1014 | END IF |
|---|
| 1015 | |
|---|
| 1016 | IF( ln_bt_fw ) THEN ! Save integrated transport for next computation |
|---|
| 1017 | ub2_b(:,:) = zwx(:,:) |
|---|
| 1018 | vb2_b(:,:) = zwy(:,:) |
|---|
| 1019 | ENDIF |
|---|
| 1020 | ! |
|---|
| 1021 | ! Update barotropic trend: |
|---|
| 1022 | IF( ln_dynadv_vec .OR. ln_linssh ) THEN |
|---|
| 1023 | DO jk=1,jpkm1 |
|---|
| 1024 | ua(:,:,jk) = ua(:,:,jk) + ( ua_b(:,:) - ub_b(:,:) ) * z1_2dt_b |
|---|
| 1025 | va(:,:,jk) = va(:,:,jk) + ( va_b(:,:) - vb_b(:,:) ) * z1_2dt_b |
|---|
| 1026 | END DO |
|---|
| 1027 | ELSE |
|---|
| 1028 | ! At this stage, ssha has been corrected: compute new depths at velocity points |
|---|
| 1029 | DO jj = 1, jpjm1 |
|---|
| 1030 | DO ji = 1, jpim1 ! NO Vector Opt. |
|---|
| 1031 | zsshu_a(ji,jj) = z1_2 * umask(ji,jj,1) * r1_e1e2u(ji,jj) & |
|---|
| 1032 | & * ( e1e2t(ji ,jj) * ssha(ji ,jj) & |
|---|
| 1033 | & + e1e2t(ji+1,jj) * ssha(ji+1,jj) ) |
|---|
| 1034 | zsshv_a(ji,jj) = z1_2 * vmask(ji,jj,1) * r1_e1e2v(ji,jj) & |
|---|
| 1035 | & * ( e1e2t(ji,jj ) * ssha(ji,jj ) & |
|---|
| 1036 | & + e1e2t(ji,jj+1) * ssha(ji,jj+1) ) |
|---|
| 1037 | END DO |
|---|
| 1038 | END DO |
|---|
| 1039 | CALL lbc_lnk_multi( zsshu_a, 'U', 1._wp, zsshv_a, 'V', 1._wp ) ! Boundary conditions |
|---|
| 1040 | ! |
|---|
| 1041 | DO jk=1,jpkm1 |
|---|
| 1042 | ua(:,:,jk) = ua(:,:,jk) + r1_hu_n(:,:) * ( ua_b(:,:) - ub_b(:,:) * hu_b(:,:) ) * z1_2dt_b |
|---|
| 1043 | va(:,:,jk) = va(:,:,jk) + r1_hv_n(:,:) * ( va_b(:,:) - vb_b(:,:) * hv_b(:,:) ) * z1_2dt_b |
|---|
| 1044 | END DO |
|---|
| 1045 | ! Save barotropic velocities not transport: |
|---|
| 1046 | ua_b(:,:) = ua_b(:,:) / ( hu_0(:,:) + zsshu_a(:,:) + 1._wp - ssumask(:,:) ) |
|---|
| 1047 | va_b(:,:) = va_b(:,:) / ( hv_0(:,:) + zsshv_a(:,:) + 1._wp - ssvmask(:,:) ) |
|---|
| 1048 | ENDIF |
|---|
| 1049 | ! |
|---|
| 1050 | DO jk = 1, jpkm1 |
|---|
| 1051 | ! Correct velocities: |
|---|
| 1052 | un(:,:,jk) = ( un(:,:,jk) + un_adv(:,:) - un_b(:,:) ) * umask(:,:,jk) |
|---|
| 1053 | vn(:,:,jk) = ( vn(:,:,jk) + vn_adv(:,:) - vn_b(:,:) ) * vmask(:,:,jk) |
|---|
| 1054 | ! |
|---|
| 1055 | END DO |
|---|
| 1056 | ! |
|---|
| 1057 | CALL iom_put( "ubar", un_adv(:,:) ) ! barotropic i-current |
|---|
| 1058 | CALL iom_put( "vbar", vn_adv(:,:) ) ! barotropic i-current |
|---|
| 1059 | ! |
|---|
| 1060 | #if defined key_agrif |
|---|
| 1061 | ! Save time integrated fluxes during child grid integration |
|---|
| 1062 | ! (used to update coarse grid transports at next time step) |
|---|
| 1063 | ! |
|---|
| 1064 | IF( .NOT.Agrif_Root() .AND. ln_bt_fw ) THEN |
|---|
| 1065 | IF( Agrif_NbStepint() == 0 ) THEN |
|---|
| 1066 | ub2_i_b(:,:) = 0._wp |
|---|
| 1067 | vb2_i_b(:,:) = 0._wp |
|---|
| 1068 | END IF |
|---|
| 1069 | ! |
|---|
| 1070 | za1 = 1._wp / REAL(Agrif_rhot(), wp) |
|---|
| 1071 | ub2_i_b(:,:) = ub2_i_b(:,:) + za1 * ub2_b(:,:) |
|---|
| 1072 | vb2_i_b(:,:) = vb2_i_b(:,:) + za1 * vb2_b(:,:) |
|---|
| 1073 | ENDIF |
|---|
| 1074 | #endif |
|---|
| 1075 | ! !* write time-spliting arrays in the restart |
|---|
| 1076 | IF( lrst_oce .AND.ln_bt_fw ) CALL ts_rst( kt, 'WRITE' ) |
|---|
| 1077 | ! |
|---|
| 1078 | CALL wrk_dealloc( jpi,jpj, zsshp2_e, zhdiv ) |
|---|
| 1079 | CALL wrk_dealloc( jpi,jpj, zu_trd, zv_trd ) |
|---|
| 1080 | CALL wrk_dealloc( jpi,jpj, zwx, zwy, zssh_frc, zu_frc, zv_frc ) |
|---|
| 1081 | CALL wrk_dealloc( jpi,jpj, zhup2_e, zhvp2_e, zhust_e, zhvst_e ) |
|---|
| 1082 | CALL wrk_dealloc( jpi,jpj, zsshu_a, zsshv_a ) |
|---|
| 1083 | CALL wrk_dealloc( jpi,jpj, zhf ) |
|---|
| 1084 | IF( ln_wd ) CALL wrk_dealloc( jpi, jpj, zcpx, zcpy, wduflt1, wdvflt1 ) |
|---|
| 1085 | ! |
|---|
| 1086 | IF ( ln_diatmb ) THEN |
|---|
| 1087 | CALL iom_put( "baro_u" , un_b*umask(:,:,1)+zmdi*(1-umask(:,:,1 ) ) ) ! Barotropic U Velocity |
|---|
| 1088 | CALL iom_put( "baro_v" , vn_b*vmask(:,:,1)+zmdi*(1-vmask(:,:,1 ) ) ) ! Barotropic V Velocity |
|---|
| 1089 | ENDIF |
|---|
| 1090 | IF( nn_timing == 1 ) CALL timing_stop('dyn_spg_ts') |
|---|
| 1091 | ! |
|---|
| 1092 | END SUBROUTINE dyn_spg_ts |
|---|
| 1093 | |
|---|
| 1094 | |
|---|
| 1095 | SUBROUTINE ts_wgt( ll_av, ll_fw, jpit, zwgt1, zwgt2) |
|---|
| 1096 | !!--------------------------------------------------------------------- |
|---|
| 1097 | !! *** ROUTINE ts_wgt *** |
|---|
| 1098 | !! |
|---|
| 1099 | !! ** Purpose : Set time-splitting weights for temporal averaging (or not) |
|---|
| 1100 | !!---------------------------------------------------------------------- |
|---|
| 1101 | LOGICAL, INTENT(in) :: ll_av ! temporal averaging=.true. |
|---|
| 1102 | LOGICAL, INTENT(in) :: ll_fw ! forward time splitting =.true. |
|---|
| 1103 | INTEGER, INTENT(inout) :: jpit ! cycle length |
|---|
| 1104 | REAL(wp), DIMENSION(3*nn_baro), INTENT(inout) :: zwgt1, & ! Primary weights |
|---|
| 1105 | zwgt2 ! Secondary weights |
|---|
| 1106 | |
|---|
| 1107 | INTEGER :: jic, jn, ji ! temporary integers |
|---|
| 1108 | REAL(wp) :: za1, za2 |
|---|
| 1109 | !!---------------------------------------------------------------------- |
|---|
| 1110 | |
|---|
| 1111 | zwgt1(:) = 0._wp |
|---|
| 1112 | zwgt2(:) = 0._wp |
|---|
| 1113 | |
|---|
| 1114 | ! Set time index when averaged value is requested |
|---|
| 1115 | IF (ll_fw) THEN |
|---|
| 1116 | jic = nn_baro |
|---|
| 1117 | ELSE |
|---|
| 1118 | jic = 2 * nn_baro |
|---|
| 1119 | ENDIF |
|---|
| 1120 | |
|---|
| 1121 | ! Set primary weights: |
|---|
| 1122 | IF (ll_av) THEN |
|---|
| 1123 | ! Define simple boxcar window for primary weights |
|---|
| 1124 | ! (width = nn_baro, centered around jic) |
|---|
| 1125 | SELECT CASE ( nn_bt_flt ) |
|---|
| 1126 | CASE( 0 ) ! No averaging |
|---|
| 1127 | zwgt1(jic) = 1._wp |
|---|
| 1128 | jpit = jic |
|---|
| 1129 | |
|---|
| 1130 | CASE( 1 ) ! Boxcar, width = nn_baro |
|---|
| 1131 | DO jn = 1, 3*nn_baro |
|---|
| 1132 | za1 = ABS(float(jn-jic))/float(nn_baro) |
|---|
| 1133 | IF (za1 < 0.5_wp) THEN |
|---|
| 1134 | zwgt1(jn) = 1._wp |
|---|
| 1135 | jpit = jn |
|---|
| 1136 | ENDIF |
|---|
| 1137 | ENDDO |
|---|
| 1138 | |
|---|
| 1139 | CASE( 2 ) ! Boxcar, width = 2 * nn_baro |
|---|
| 1140 | DO jn = 1, 3*nn_baro |
|---|
| 1141 | za1 = ABS(float(jn-jic))/float(nn_baro) |
|---|
| 1142 | IF (za1 < 1._wp) THEN |
|---|
| 1143 | zwgt1(jn) = 1._wp |
|---|
| 1144 | jpit = jn |
|---|
| 1145 | ENDIF |
|---|
| 1146 | ENDDO |
|---|
| 1147 | CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for nn_bt_flt' ) |
|---|
| 1148 | END SELECT |
|---|
| 1149 | |
|---|
| 1150 | ELSE ! No time averaging |
|---|
| 1151 | zwgt1(jic) = 1._wp |
|---|
| 1152 | jpit = jic |
|---|
| 1153 | ENDIF |
|---|
| 1154 | |
|---|
| 1155 | ! Set secondary weights |
|---|
| 1156 | DO jn = 1, jpit |
|---|
| 1157 | DO ji = jn, jpit |
|---|
| 1158 | zwgt2(jn) = zwgt2(jn) + zwgt1(ji) |
|---|
| 1159 | END DO |
|---|
| 1160 | END DO |
|---|
| 1161 | |
|---|
| 1162 | ! Normalize weigths: |
|---|
| 1163 | za1 = 1._wp / SUM(zwgt1(1:jpit)) |
|---|
| 1164 | za2 = 1._wp / SUM(zwgt2(1:jpit)) |
|---|
| 1165 | DO jn = 1, jpit |
|---|
| 1166 | zwgt1(jn) = zwgt1(jn) * za1 |
|---|
| 1167 | zwgt2(jn) = zwgt2(jn) * za2 |
|---|
| 1168 | END DO |
|---|
| 1169 | ! |
|---|
| 1170 | END SUBROUTINE ts_wgt |
|---|
| 1171 | |
|---|
| 1172 | |
|---|
| 1173 | SUBROUTINE ts_rst( kt, cdrw ) |
|---|
| 1174 | !!--------------------------------------------------------------------- |
|---|
| 1175 | !! *** ROUTINE ts_rst *** |
|---|
| 1176 | !! |
|---|
| 1177 | !! ** Purpose : Read or write time-splitting arrays in restart file |
|---|
| 1178 | !!---------------------------------------------------------------------- |
|---|
| 1179 | INTEGER , INTENT(in) :: kt ! ocean time-step |
|---|
| 1180 | CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag |
|---|
| 1181 | ! |
|---|
| 1182 | !!---------------------------------------------------------------------- |
|---|
| 1183 | ! |
|---|
| 1184 | IF( TRIM(cdrw) == 'READ' ) THEN |
|---|
| 1185 | CALL iom_get( numror, jpdom_autoglo, 'ub2_b' , ub2_b (:,:) ) |
|---|
| 1186 | CALL iom_get( numror, jpdom_autoglo, 'vb2_b' , vb2_b (:,:) ) |
|---|
| 1187 | IF( .NOT.ln_bt_av ) THEN |
|---|
| 1188 | CALL iom_get( numror, jpdom_autoglo, 'sshbb_e' , sshbb_e(:,:) ) |
|---|
| 1189 | CALL iom_get( numror, jpdom_autoglo, 'ubb_e' , ubb_e(:,:) ) |
|---|
| 1190 | CALL iom_get( numror, jpdom_autoglo, 'vbb_e' , vbb_e(:,:) ) |
|---|
| 1191 | CALL iom_get( numror, jpdom_autoglo, 'sshb_e' , sshb_e(:,:) ) |
|---|
| 1192 | CALL iom_get( numror, jpdom_autoglo, 'ub_e' , ub_e(:,:) ) |
|---|
| 1193 | CALL iom_get( numror, jpdom_autoglo, 'vb_e' , vb_e(:,:) ) |
|---|
| 1194 | ENDIF |
|---|
| 1195 | #if defined key_agrif |
|---|
| 1196 | ! Read time integrated fluxes |
|---|
| 1197 | IF ( .NOT.Agrif_Root() ) THEN |
|---|
| 1198 | CALL iom_get( numror, jpdom_autoglo, 'ub2_i_b' , ub2_i_b(:,:) ) |
|---|
| 1199 | CALL iom_get( numror, jpdom_autoglo, 'vb2_i_b' , vb2_i_b(:,:) ) |
|---|
| 1200 | ENDIF |
|---|
| 1201 | #endif |
|---|
| 1202 | ! |
|---|
| 1203 | ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN |
|---|
| 1204 | CALL iom_rstput( kt, nitrst, numrow, 'ub2_b' , ub2_b (:,:) ) |
|---|
| 1205 | CALL iom_rstput( kt, nitrst, numrow, 'vb2_b' , vb2_b (:,:) ) |
|---|
| 1206 | ! |
|---|
| 1207 | IF (.NOT.ln_bt_av) THEN |
|---|
| 1208 | CALL iom_rstput( kt, nitrst, numrow, 'sshbb_e' , sshbb_e(:,:) ) |
|---|
| 1209 | CALL iom_rstput( kt, nitrst, numrow, 'ubb_e' , ubb_e(:,:) ) |
|---|
| 1210 | CALL iom_rstput( kt, nitrst, numrow, 'vbb_e' , vbb_e(:,:) ) |
|---|
| 1211 | CALL iom_rstput( kt, nitrst, numrow, 'sshb_e' , sshb_e(:,:) ) |
|---|
| 1212 | CALL iom_rstput( kt, nitrst, numrow, 'ub_e' , ub_e(:,:) ) |
|---|
| 1213 | CALL iom_rstput( kt, nitrst, numrow, 'vb_e' , vb_e(:,:) ) |
|---|
| 1214 | ENDIF |
|---|
| 1215 | #if defined key_agrif |
|---|
| 1216 | ! Save time integrated fluxes |
|---|
| 1217 | IF ( .NOT.Agrif_Root() ) THEN |
|---|
| 1218 | CALL iom_rstput( kt, nitrst, numrow, 'ub2_i_b' , ub2_i_b(:,:) ) |
|---|
| 1219 | CALL iom_rstput( kt, nitrst, numrow, 'vb2_i_b' , vb2_i_b(:,:) ) |
|---|
| 1220 | ENDIF |
|---|
| 1221 | #endif |
|---|
| 1222 | ENDIF |
|---|
| 1223 | ! |
|---|
| 1224 | END SUBROUTINE ts_rst |
|---|
| 1225 | |
|---|
| 1226 | |
|---|
| 1227 | SUBROUTINE dyn_spg_ts_init |
|---|
| 1228 | !!--------------------------------------------------------------------- |
|---|
| 1229 | !! *** ROUTINE dyn_spg_ts_init *** |
|---|
| 1230 | !! |
|---|
| 1231 | !! ** Purpose : Set time splitting options |
|---|
| 1232 | !!---------------------------------------------------------------------- |
|---|
| 1233 | INTEGER :: ji ,jj ! dummy loop indices |
|---|
| 1234 | REAL(wp) :: zxr2, zyr2, zcmax ! local scalar |
|---|
| 1235 | REAL(wp), POINTER, DIMENSION(:,:) :: zcu |
|---|
| 1236 | !!---------------------------------------------------------------------- |
|---|
| 1237 | ! |
|---|
| 1238 | ! Max courant number for ext. grav. waves |
|---|
| 1239 | ! |
|---|
| 1240 | CALL wrk_alloc( jpi,jpj, zcu ) |
|---|
| 1241 | ! |
|---|
| 1242 | DO jj = 1, jpj |
|---|
| 1243 | DO ji =1, jpi |
|---|
| 1244 | zxr2 = r1_e1t(ji,jj) * r1_e1t(ji,jj) |
|---|
| 1245 | zyr2 = r1_e2t(ji,jj) * r1_e2t(ji,jj) |
|---|
| 1246 | zcu(ji,jj) = SQRT( grav * ht_0(ji,jj) * (zxr2 + zyr2) ) |
|---|
| 1247 | END DO |
|---|
| 1248 | END DO |
|---|
| 1249 | ! |
|---|
| 1250 | zcmax = MAXVAL( zcu(:,:) ) |
|---|
| 1251 | IF( lk_mpp ) CALL mpp_max( zcmax ) |
|---|
| 1252 | |
|---|
| 1253 | ! Estimate number of iterations to satisfy a max courant number= rn_bt_cmax |
|---|
| 1254 | IF( ln_bt_auto ) nn_baro = CEILING( rdt / rn_bt_cmax * zcmax) |
|---|
| 1255 | |
|---|
| 1256 | rdtbt = rdt / REAL( nn_baro , wp ) |
|---|
| 1257 | zcmax = zcmax * rdtbt |
|---|
| 1258 | ! Print results |
|---|
| 1259 | IF(lwp) WRITE(numout,*) |
|---|
| 1260 | IF(lwp) WRITE(numout,*) 'dyn_spg_ts : split-explicit free surface' |
|---|
| 1261 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
|---|
| 1262 | IF( ln_bt_auto ) THEN |
|---|
| 1263 | IF(lwp) WRITE(numout,*) ' ln_ts_auto=.true. Automatically set nn_baro ' |
|---|
| 1264 | IF(lwp) WRITE(numout,*) ' Max. courant number allowed: ', rn_bt_cmax |
|---|
| 1265 | ELSE |
|---|
| 1266 | IF(lwp) WRITE(numout,*) ' ln_ts_auto=.false.: Use nn_baro in namelist ' |
|---|
| 1267 | ENDIF |
|---|
| 1268 | |
|---|
| 1269 | IF(ln_bt_av) THEN |
|---|
| 1270 | IF(lwp) WRITE(numout,*) ' ln_bt_av=.true. => Time averaging over nn_baro time steps is on ' |
|---|
| 1271 | ELSE |
|---|
| 1272 | IF(lwp) WRITE(numout,*) ' ln_bt_av=.false. => No time averaging of barotropic variables ' |
|---|
| 1273 | ENDIF |
|---|
| 1274 | ! |
|---|
| 1275 | ! |
|---|
| 1276 | IF(ln_bt_fw) THEN |
|---|
| 1277 | IF(lwp) WRITE(numout,*) ' ln_bt_fw=.true. => Forward integration of barotropic variables ' |
|---|
| 1278 | ELSE |
|---|
| 1279 | IF(lwp) WRITE(numout,*) ' ln_bt_fw =.false.=> Centred integration of barotropic variables ' |
|---|
| 1280 | ENDIF |
|---|
| 1281 | ! |
|---|
| 1282 | #if defined key_agrif |
|---|
| 1283 | ! Restrict the use of Agrif to the forward case only |
|---|
| 1284 | IF( .NOT.ln_bt_fw .AND. .NOT.Agrif_Root() ) CALL ctl_stop( 'AGRIF not implemented if ln_bt_fw=.FALSE.' ) |
|---|
| 1285 | #endif |
|---|
| 1286 | ! |
|---|
| 1287 | IF(lwp) WRITE(numout,*) ' Time filter choice, nn_bt_flt: ', nn_bt_flt |
|---|
| 1288 | SELECT CASE ( nn_bt_flt ) |
|---|
| 1289 | CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' Dirac' |
|---|
| 1290 | CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' Boxcar: width = nn_baro' |
|---|
| 1291 | CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' Boxcar: width = 2*nn_baro' |
|---|
| 1292 | CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for nn_bt_flt: should 0,1,2' ) |
|---|
| 1293 | END SELECT |
|---|
| 1294 | ! |
|---|
| 1295 | IF(lwp) WRITE(numout,*) ' ' |
|---|
| 1296 | IF(lwp) WRITE(numout,*) ' nn_baro = ', nn_baro |
|---|
| 1297 | IF(lwp) WRITE(numout,*) ' Barotropic time step [s] is :', rdtbt |
|---|
| 1298 | IF(lwp) WRITE(numout,*) ' Maximum Courant number is :', zcmax |
|---|
| 1299 | ! |
|---|
| 1300 | IF( .NOT.ln_bt_av .AND. .NOT.ln_bt_fw ) THEN |
|---|
| 1301 | CALL ctl_stop( 'dynspg_ts ERROR: No time averaging => only forward integration is possible' ) |
|---|
| 1302 | ENDIF |
|---|
| 1303 | IF( zcmax>0.9_wp ) THEN |
|---|
| 1304 | CALL ctl_stop( 'dynspg_ts ERROR: Maximum Courant number is greater than 0.9: Inc. nn_baro !' ) |
|---|
| 1305 | ENDIF |
|---|
| 1306 | ! |
|---|
| 1307 | CALL wrk_dealloc( jpi,jpj, zcu ) |
|---|
| 1308 | ! |
|---|
| 1309 | END SUBROUTINE dyn_spg_ts_init |
|---|
| 1310 | |
|---|
| 1311 | !!====================================================================== |
|---|
| 1312 | END MODULE dynspg_ts |
|---|
