Changeset 12059 for NEMO/branches/2019/dev_r10742_ENHANCE-12_SimonM-Tides/src/OCE/BDY/bdytides.F90

Timestamp:

2019-12-05T09:34:39+01:00 (4 years ago)

Author:

smueller

Message:

Reversal of changeset [10865] to avoid a conflict in the upcoming sync merge with the trunk; a new version of the modification implemented by changeset [10865] will be applied following the upcoming sync merge with the trunk (ticket #2194)

File:

• NEMO/branches/2019/dev_r10742_ENHANCE-12_SimonM-Tides/src/OCE/BDY/bdytides.F90 (modified) (2 diffs)

NEMO/branches/2019/dev_r10742_ENHANCE-12_SimonM-Tides/src/OCE/BDY/bdytides.F90

@@ -30 +30 @@
 
    PUBLIC   bdytide_init     ! routine called in bdy_init
+   PUBLIC   bdytide_update   ! routine called in bdy_dta
    PUBLIC   bdy_dta_tides    ! routine called in dyn_spg_ts
 
@@ -262 +263 @@
 
 
+   SUBROUTINE bdytide_update( kt, idx, dta, td, jit, time_offset )
+      !!----------------------------------------------------------------------
+      !!                 ***  SUBROUTINE bdytide_update  ***
+      !!                
+      !! ** Purpose : - Add tidal forcing to ssh, u2d and v2d OBC data arrays. 
+      !!                
+      !!----------------------------------------------------------------------
+      INTEGER          , INTENT(in   ) ::   kt          ! Main timestep counter
+      TYPE(OBC_INDEX)  , INTENT(in   ) ::   idx         ! OBC indices
+      TYPE(OBC_DATA)   , INTENT(inout) ::   dta         ! OBC external data
+      TYPE(TIDES_DATA) , INTENT(inout) ::   td          ! tidal harmonics data
+      INTEGER, OPTIONAL, INTENT(in   ) ::   jit         ! Barotropic timestep counter (for timesplitting option)
+      INTEGER, OPTIONAL, INTENT(in   ) ::   time_offset ! time offset in units of timesteps. NB. if jit
+      !                                                 ! is present then units = subcycle timesteps.
+      !                                                 ! time_offset = 0  => get data at "now"    time level
+      !                                                 ! time_offset = -1 => get data at "before" time level
+      !                                                 ! time_offset = +1 => get data at "after"  time level
+      !                                                 ! etc.
+      !
+      INTEGER  ::   itide, igrd, ib       ! dummy loop indices
+      INTEGER  ::   time_add              ! time offset in units of timesteps
+      INTEGER, DIMENSION(3) ::   ilen0    ! length of boundary data (from OBC arrays)
+      REAL(wp) ::   z_arg, z_sarg, zflag, zramp   ! local scalars    
+      REAL(wp), DIMENSION(jpmax_harmo) :: z_sist, z_cost
+      !!----------------------------------------------------------------------
+      !
+      ilen0(1) =  SIZE(td%ssh(:,1,1))
+      ilen0(2) =  SIZE(td%u(:,1,1))
+      ilen0(3) =  SIZE(td%v(:,1,1))
+
+      zflag=1
+      IF ( PRESENT(jit) ) THEN
+        IF ( jit /= 1 ) zflag=0
+      ENDIF
+
+      IF ( (nsec_day == NINT(0.5_wp * rdt) .OR. kt==nit000) .AND. zflag==1 ) THEN
+        !
+        kt_tide = kt - (nsec_day - 0.5_wp * rdt)/rdt
+        !
+        IF(lwp) THEN
+           WRITE(numout,*)
+           WRITE(numout,*) 'bdytide_update : (re)Initialization of the tidal bdy forcing at kt=',kt
+           WRITE(numout,*) '~~~~~~~~~~~~~~ '
+        ENDIF
+        !
+        CALL tide_init_elevation ( idx, td )
+        CALL tide_init_velocities( idx, td )
+        !
+      ENDIF 
+
+      time_add = 0
+      IF( PRESENT(time_offset) ) THEN
+         time_add = time_offset
+      ENDIF
+         
+      IF( PRESENT(jit) ) THEN  
+         z_arg = ((kt-kt_tide) * rdt + (jit+0.5_wp*(time_add-1)) * rdt / REAL(nn_baro,wp) )
+      ELSE                              
+         z_arg = ((kt-kt_tide)+time_add) * rdt
+      ENDIF
+
+      ! Linear ramp on tidal component at open boundaries 
+      zramp = 1._wp
+      IF (ln_tide_ramp) zramp = MIN(MAX( (z_arg + (kt_tide-nit000)*rdt)/(rn_tide_ramp_dt*rday),0._wp),1._wp)
+
+      DO itide = 1, nb_harmo
+         z_sarg = z_arg * tide_harmonics(itide)%omega
+         z_cost(itide) = COS( z_sarg )
+         z_sist(itide) = SIN( z_sarg )
+      END DO
+
+      DO itide = 1, nb_harmo
+         igrd=1                              ! SSH on tracer grid
+         DO ib = 1, ilen0(igrd)
+            dta%ssh(ib) = dta%ssh(ib) + zramp*(td%ssh(ib,itide,1)*z_cost(itide) + td%ssh(ib,itide,2)*z_sist(itide))
+         END DO
+         igrd=2                              ! U grid
+         DO ib = 1, ilen0(igrd)
+            dta%u2d(ib) = dta%u2d(ib) + zramp*(td%u  (ib,itide,1)*z_cost(itide) + td%u  (ib,itide,2)*z_sist(itide))
+         END DO
+         igrd=3                              ! V grid
+         DO ib = 1, ilen0(igrd) 
+            dta%v2d(ib) = dta%v2d(ib) + zramp*(td%v  (ib,itide,1)*z_cost(itide) + td%v  (ib,itide,2)*z_sist(itide))
+         END DO
+      END DO
+      !
+   END SUBROUTINE bdytide_update
+
+
    SUBROUTINE bdy_dta_tides( kt, kit, time_offset )
       !!----------------------------------------------------------------------