[3] | 1 | MODULE dynzad |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE dynzad *** |
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| 4 | !! Ocean dynamics : vertical advection trend |
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| 5 | !!====================================================================== |
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| 6 | |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! dyn_zad : vertical advection momentum trend |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! * Modules used |
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| 11 | USE oce ! ocean dynamics and tracers |
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| 12 | USE dom_oce ! ocean space and time domain |
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| 13 | USE in_out_manager ! I/O manager |
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| 14 | USE trddyn_oce ! dynamics trends diagnostics variables |
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| 15 | USE flxrnf ! ??? |
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| 16 | |
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| 17 | IMPLICIT NONE |
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| 18 | PRIVATE |
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| 19 | |
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| 20 | !! * Accessibility |
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| 21 | PUBLIC dyn_zad ! routine called by step.F90 |
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| 22 | |
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| 23 | !! * Substitutions |
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| 24 | # include "domzgr_substitute.h90" |
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| 25 | # include "vectopt_loop_substitute.h90" |
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| 26 | !!---------------------------------------------------------------------- |
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| 27 | !! OPA 9.0 , LODYC-IPSL (2003) |
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| 28 | !!---------------------------------------------------------------------- |
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| 29 | |
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| 30 | CONTAINS |
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| 31 | |
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| 32 | #if defined key_autotasking |
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| 33 | !!---------------------------------------------------------------------- |
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| 34 | !! 'key_autotasking' j-k-i loops (j-slab) |
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| 35 | !!---------------------------------------------------------------------- |
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| 36 | |
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| 37 | SUBROUTINE dyn_zad( kt ) |
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| 38 | !!---------------------------------------------------------------------- |
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| 39 | !! *** ROUTINE dynzad *** |
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| 40 | !! |
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| 41 | !! ** Purpose : Compute the now vertical momentum advection trend and |
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| 42 | !! add it to the general trend of momentum equation. |
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| 43 | !! |
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| 44 | !! ** Method : Use j-slab (j-k-i loops) for auto-tasking |
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| 45 | !! The now vertical advection of momentum is given by: |
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| 46 | !! w dz(u) = ua + 1/(e1u*e2u*e3u) mk+1[ mi(e1t*e2t*wn) dk(un) ] |
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| 47 | !! w dz(v) = va + 1/(e1v*e2v*e3v) mk+1[ mj(e1t*e2t*wn) dk(vn) ] |
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| 48 | !! Add this trend to the general trend (ua,va): |
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| 49 | !! (ua,va) = (ua,va) + w dz(u,v) |
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| 50 | !! |
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| 51 | !! ** Action : - Update (ua,va) with the vert. momentum advection trends |
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| 52 | !! - Save the trends in (utrd,vtrd) ('key_trddyn') |
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| 53 | !! |
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| 54 | !! History : |
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| 55 | !! 6.0 ! 91-01 (G. Madec) Original code |
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| 56 | !! 7.0 ! 91-11 (G. Madec) |
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| 57 | !! 7.5 ! 96-01 (G. Madec) statement function for e3 |
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| 58 | !! 8.5 ! 02-07 (G. Madec) Free form, F90 |
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| 59 | !!---------------------------------------------------------------------- |
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| 60 | !! * modules used |
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| 61 | USE oce, ONLY: zwuw => ta, & ! use ta as 3D workspace |
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| 62 | zwvw => sa ! use sa as 3D workspace |
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| 63 | |
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| 64 | !! * Arguments |
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| 65 | INTEGER, INTENT( in ) :: kt ! ocean time-step inedx |
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| 66 | |
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| 67 | !! * Local declarations |
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| 68 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 69 | REAL(wp) :: zvn, zua, zva ! temporary scalars |
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| 70 | REAL(wp), DIMENSION(jpi) :: & |
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| 71 | zww ! temporary workspace |
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| 72 | !!---------------------------------------------------------------------- |
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| 73 | |
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| 74 | IF( kt == nit000 ) THEN |
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| 75 | IF(lwp) WRITE(numout,*) |
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| 76 | IF(lwp) WRITE(numout,*) 'dyn_zad : arakawa advection scheme' |
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| 77 | IF(lwp) WRITE(numout,*) '~~~~~~~ Auto-tasking case, j-slab, no vector opt.' |
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| 78 | ENDIF |
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| 79 | |
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| 80 | ! ! =============== |
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| 81 | DO jj = 2, jpjm1 ! Vertical slab |
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| 82 | ! ! =============== |
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| 83 | |
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| 84 | ! Vertical momentum advection at level w and u- and v- vertical |
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| 85 | ! ---------------------------------------------------------------- |
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| 86 | DO jk = 2, jpkm1 |
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| 87 | ! vertical fluxes |
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| 88 | DO ji = 2, jpi |
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| 89 | zww(ji) = 0.25 * e1t(ji,jj) * e2t(ji,jj) * wn(ji,jj,jk) |
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| 90 | END DO |
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| 91 | ! vertical momentum advection at w-point |
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| 92 | DO ji = 2, jpim1 |
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| 93 | zvn = 0.25 * e1t(ji,jj+1) * e2t(ji,jj+1) * wn(ji,jj+1,jk) |
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| 94 | zwuw(ji,jj,jk) = ( zww(ji+1) + zww(ji) ) * ( un(ji,jj,jk-1)-un(ji,jj,jk) ) |
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| 95 | zwvw(ji,jj,jk) = ( zvn + zww(ji) ) * ( vn(ji,jj,jk-1)-vn(ji,jj,jk) ) |
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| 96 | END DO |
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| 97 | END DO |
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| 98 | |
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| 99 | ! Surface and bottom values set to zero |
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| 100 | DO ji = 2, jpim1 |
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| 101 | zwuw(ji,jj, 1 ) = 0.e0 |
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| 102 | zwvw(ji,jj, 1 ) = 0.e0 |
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| 103 | zwuw(ji,jj,jpk) = 0.e0 |
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| 104 | zwvw(ji,jj,jpk) = 0.e0 |
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| 105 | END DO |
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| 106 | |
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| 107 | ! Vertical momentum advection at u- and v-points |
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| 108 | ! ---------------------------------------------- |
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| 109 | DO jk = 1, jpkm1 |
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| 110 | DO ji = 2, jpim1 |
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| 111 | ! vertical momentum advective trends |
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| 112 | zua = - ( zwuw(ji,jj,jk) + zwuw(ji,jj,jk+1) ) / ( e1u(ji,jj) * e2u(ji,jj) * fse3u(ji,jj,jk) ) |
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| 113 | zva = - ( zwvw(ji,jj,jk) + zwvw(ji,jj,jk+1) ) / ( e1v(ji,jj) * e2v(ji,jj) * fse3v(ji,jj,jk) ) |
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| 114 | ! add the trends to the general momentum trends |
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| 115 | ua(ji,jj,jk) = ua(ji,jj,jk) + zua |
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| 116 | va(ji,jj,jk) = va(ji,jj,jk) + zva |
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| 117 | # if defined key_trddyn |
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| 118 | ! save the trends for diagnostics |
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| 119 | utrd(ji,jj,jk,6) = zua |
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| 120 | vtrd(ji,jj,jk,6) = zva |
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| 121 | # endif |
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| 122 | END DO |
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| 123 | END DO |
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| 124 | ! ! =============== |
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| 125 | END DO ! End of slab |
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| 126 | ! ! =============== |
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| 127 | |
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| 128 | IF( l_ctl .AND. lwp ) THEN ! print sum trends (used for debugging) |
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| 129 | zua = SUM( ua(2:jpim1,2:jpjm1,1:jpkm1) * umask(2:jpim1,2:jpjm1,1:jpkm1) ) |
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| 130 | zva = SUM( va(2:jpim1,2:jpjm1,1:jpkm1) * vmask(2:jpim1,2:jpjm1,1:jpkm1) ) |
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| 131 | WRITE(numout,*) ' zad - Ua: ', zua-u_ctl, ' Va: ', zva-v_ctl |
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| 132 | u_ctl = zua ; v_ctl = zva |
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| 133 | ENDIF |
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| 134 | |
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| 135 | END SUBROUTINE dyn_zad |
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| 136 | |
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| 137 | #else |
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| 138 | !!---------------------------------------------------------------------- |
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| 139 | !! Default option k-j-i loop (vector opt.) |
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| 140 | !!---------------------------------------------------------------------- |
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| 141 | |
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| 142 | SUBROUTINE dyn_zad ( kt ) |
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| 143 | !!---------------------------------------------------------------------- |
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| 144 | !! *** ROUTINE dynzad *** |
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| 145 | !! |
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| 146 | !! ** Purpose : Compute the now vertical momentum advection trend and |
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| 147 | !! add it to the general trend of momentum equation. |
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| 148 | !! |
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| 149 | !! ** Method : The now vertical advection of momentum is given by: |
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| 150 | !! w dz(u) = ua + 1/(e1u*e2u*e3u) mk+1[ mi(e1t*e2t*wn) dk(un) ] |
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| 151 | !! w dz(v) = va + 1/(e1v*e2v*e3v) mk+1[ mj(e1t*e2t*wn) dk(vn) ] |
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| 152 | !! Add this trend to the general trend (ua,va): |
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| 153 | !! (ua,va) = (ua,va) + w dz(u,v) |
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| 154 | !! |
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| 155 | !! ** Action : - Update (ua,va) with the vert. momentum adv. trends |
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| 156 | !! - Save the trends in (utrd,vtrd) ('key_trddyn') |
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| 157 | !! |
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| 158 | !! History : |
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| 159 | !! 8.5 ! 02-07 (G. Madec) Original code |
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| 160 | !!---------------------------------------------------------------------- |
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| 161 | !! * modules used |
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| 162 | USE oce, ONLY: zwuw => ta, & ! use ta as 3D workspace |
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| 163 | zwvw => sa ! use sa as 3D workspace |
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| 164 | !! * Arguments |
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| 165 | INTEGER, INTENT( in ) :: kt ! ocean time-step inedx |
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| 166 | |
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| 167 | !! * Local declarations |
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| 168 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 169 | REAL(wp) :: zua, zva ! temporary scalars |
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| 170 | REAL(wp), DIMENSION(jpi,jpj) :: & |
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| 171 | zww ! temporary workspace |
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| 172 | !!---------------------------------------------------------------------- |
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| 173 | |
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| 174 | IF( kt == nit000 ) THEN |
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| 175 | IF(lwp)WRITE(numout,*) |
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| 176 | IF(lwp)WRITE(numout,*) 'dyn_zad : arakawa advection scheme' |
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| 177 | IF(lwp)WRITE(numout,*) '~~~~~~~ vector optimization k-j-i loop' |
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| 178 | ENDIF |
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| 179 | |
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| 180 | ! Vertical momentum advection at level w and u- and v- vertical |
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| 181 | ! ------------------------------------------------------------- |
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| 182 | DO jk = 2, jpkm1 |
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| 183 | ! vertical fluxes |
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| 184 | DO jj = 2, jpj |
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| 185 | DO ji = fs_2, jpi ! vector opt. |
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| 186 | zww(ji,jj) = 0.25 * e1t(ji,jj) * e2t(ji,jj) * wn(ji,jj,jk) |
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| 187 | END DO |
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| 188 | END DO |
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| 189 | ! vertical momentum advection at w-point |
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| 190 | DO jj = 2, jpjm1 |
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| 191 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 192 | zwuw(ji,jj,jk) = ( zww(ji+1,jj ) + zww(ji,jj) ) * ( un(ji,jj,jk-1)-un(ji,jj,jk) ) |
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| 193 | zwvw(ji,jj,jk) = ( zww(ji ,jj+1) + zww(ji,jj) ) * ( vn(ji,jj,jk-1)-vn(ji,jj,jk) ) |
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| 194 | END DO |
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| 195 | END DO |
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| 196 | END DO |
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| 197 | |
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| 198 | ! Surface and bottom values set to zero |
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| 199 | DO jj = 2, jpjm1 |
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| 200 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 201 | zwuw(ji,jj, 1 ) = 0.e0 |
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| 202 | zwvw(ji,jj, 1 ) = 0.e0 |
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| 203 | zwuw(ji,jj,jpk) = 0.e0 |
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| 204 | zwvw(ji,jj,jpk) = 0.e0 |
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| 205 | END DO |
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| 206 | END DO |
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| 207 | |
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| 208 | |
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| 209 | ! Vertical momentum advection at u- and v-points |
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| 210 | ! ---------------------------------------------- |
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| 211 | DO jk = 1, jpkm1 |
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| 212 | DO jj = 2, jpjm1 |
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| 213 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 214 | ! vertical momentum advective trends |
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| 215 | zua = - ( zwuw(ji,jj,jk) + zwuw(ji,jj,jk+1) ) / ( e1u(ji,jj) * e2u(ji,jj) * fse3u(ji,jj,jk) ) |
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| 216 | zva = - ( zwvw(ji,jj,jk) + zwvw(ji,jj,jk+1) ) / ( e1v(ji,jj) * e2v(ji,jj) * fse3v(ji,jj,jk) ) |
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| 217 | ! add the trends to the general momentum trends |
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| 218 | ua(ji,jj,jk) = ua(ji,jj,jk) + zua |
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| 219 | va(ji,jj,jk) = va(ji,jj,jk) + zva |
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| 220 | # if defined key_trddyn |
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| 221 | ! save the trends for diagnostics |
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| 222 | utrd(ji,jj,jk,6) = zua |
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| 223 | vtrd(ji,jj,jk,6) = zva |
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| 224 | # endif |
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| 225 | END DO |
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| 226 | END DO |
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| 227 | END DO |
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| 228 | |
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| 229 | IF( l_ctl .AND. lwp ) THEN ! print sum trends (used for debugging) |
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| 230 | zua = SUM( ua(2:jpim1,2:jpjm1,1:jpkm1) * umask(2:jpim1,2:jpjm1,1:jpkm1) ) |
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| 231 | zva = SUM( va(2:jpim1,2:jpjm1,1:jpkm1) * vmask(2:jpim1,2:jpjm1,1:jpkm1) ) |
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| 232 | WRITE(numout,*) ' zad - Ua: ', zua-u_ctl, ' Va: ', zva-v_ctl |
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| 233 | u_ctl = zua ; v_ctl = zva |
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| 234 | ENDIF |
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| 235 | |
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| 236 | END SUBROUTINE dyn_zad |
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| 237 | #endif |
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| 238 | |
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| 239 | !!====================================================================== |
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| 240 | END MODULE dynzad |
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