[643] | 1 | MODULE dynadv_cen2 |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE dynadv *** |
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| 4 | !! Ocean dynamics: Update the momentum trend with the flux form advection |
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| 5 | !! using a 2nd order centred scheme |
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| 6 | !!====================================================================== |
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[1566] | 7 | !! History : 2.0 ! 2006-08 (G. Madec, S. Theetten) Original code |
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| 8 | !! 3.2 ! 2009-07 (R. Benshila) Suppression of rigid-lid option |
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[643] | 9 | !!---------------------------------------------------------------------- |
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| 10 | |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | !! dyn_adv_cen2 : flux form momentum advection (ln_dynadv_cen2=T) |
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| 13 | !! trends using a 2nd order centred scheme |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | USE oce ! ocean dynamics and tracers |
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| 16 | USE dom_oce ! ocean space and time domain |
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[4990] | 17 | USE trd_oce ! trends: ocean variables |
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| 18 | USE trddyn ! trend manager: dynamics |
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| 19 | ! |
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[643] | 20 | USE in_out_manager ! I/O manager |
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[2715] | 21 | USE lib_mpp ! MPP library |
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[1129] | 22 | USE prtctl ! Print control |
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[4990] | 23 | USE wrk_nemo ! Memory Allocation |
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| 24 | USE timing ! Timing |
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[643] | 25 | |
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| 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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[1566] | 29 | PUBLIC dyn_adv_cen2 ! routine called by step.F90 |
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[643] | 30 | |
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| 31 | !! * Substitutions |
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| 32 | # include "domzgr_substitute.h90" |
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| 33 | # include "vectopt_loop_substitute.h90" |
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| 34 | !!---------------------------------------------------------------------- |
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[2715] | 35 | !! NEMO/OPA 4.0 , NEMO Consortium (2011) |
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[1152] | 36 | !! $Id$ |
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[2715] | 37 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[643] | 38 | !!---------------------------------------------------------------------- |
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| 39 | CONTAINS |
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| 40 | |
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| 41 | SUBROUTINE dyn_adv_cen2( kt ) |
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| 42 | !!---------------------------------------------------------------------- |
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| 43 | !! *** ROUTINE dyn_adv_cen2 *** |
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| 44 | !! |
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| 45 | !! ** Purpose : Compute the now momentum advection trend in flux form |
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[1566] | 46 | !! and the general trend of the momentum equation. |
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[643] | 47 | !! |
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| 48 | !! ** Method : Trend evaluated using now fields (centered in time) |
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| 49 | !! |
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[1566] | 50 | !! ** Action : (ua,va) updated with the now vorticity term trend |
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[643] | 51 | !!---------------------------------------------------------------------- |
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[1566] | 52 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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[2715] | 53 | ! |
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[1566] | 54 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[2715] | 55 | REAL(wp) :: zbu, zbv ! local scalars |
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[3294] | 56 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zfu_t, zfv_t, zfu_f, zfv_f, zfu_uw, zfv_vw, zfw |
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| 57 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zfu, zfv |
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[643] | 58 | !!---------------------------------------------------------------------- |
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[3294] | 59 | ! |
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| 60 | IF( nn_timing == 1 ) CALL timing_start('dyn_adv_cen2') |
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| 61 | ! |
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| 62 | CALL wrk_alloc( jpi, jpj, jpk, zfu_t, zfv_t, zfu_f, zfv_f, zfu_uw, zfv_vw, zfu, zfv, zfw ) |
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| 63 | ! |
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[2715] | 64 | IF( kt == nit000 .AND. lwp ) THEN |
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| 65 | WRITE(numout,*) |
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| 66 | WRITE(numout,*) 'dyn_adv_cen2 : 2nd order flux form momentum advection' |
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| 67 | WRITE(numout,*) '~~~~~~~~~~~~' |
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[643] | 68 | ENDIF |
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[3294] | 69 | ! |
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[1129] | 70 | IF( l_trddyn ) THEN ! Save ua and va trends |
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| 71 | zfu_uw(:,:,:) = ua(:,:,:) |
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| 72 | zfv_vw(:,:,:) = va(:,:,:) |
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| 73 | ENDIF |
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[643] | 74 | |
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[1566] | 75 | ! ! ====================== ! |
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| 76 | ! ! Horizontal advection ! |
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| 77 | DO jk = 1, jpkm1 ! ====================== ! |
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| 78 | ! ! horizontal volume fluxes |
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[643] | 79 | zfu(:,:,jk) = 0.25 * e2u(:,:) * fse3u(:,:,jk) * un(:,:,jk) |
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| 80 | zfv(:,:,jk) = 0.25 * e1v(:,:) * fse3v(:,:,jk) * vn(:,:,jk) |
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[1566] | 81 | ! |
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| 82 | DO jj = 1, jpjm1 ! horizontal momentum fluxes at T- and F-point |
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[643] | 83 | DO ji = 1, fs_jpim1 ! vector opt. |
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| 84 | zfu_t(ji+1,jj ,jk) = ( zfu(ji,jj,jk) + zfu(ji+1,jj ,jk) ) * ( un(ji,jj,jk) + un(ji+1,jj ,jk) ) |
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| 85 | zfv_f(ji ,jj ,jk) = ( zfv(ji,jj,jk) + zfv(ji+1,jj ,jk) ) * ( un(ji,jj,jk) + un(ji ,jj+1,jk) ) |
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| 86 | zfu_f(ji ,jj ,jk) = ( zfu(ji,jj,jk) + zfu(ji ,jj+1,jk) ) * ( vn(ji,jj,jk) + vn(ji+1,jj ,jk) ) |
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| 87 | zfv_t(ji ,jj+1,jk) = ( zfv(ji,jj,jk) + zfv(ji ,jj+1,jk) ) * ( vn(ji,jj,jk) + vn(ji ,jj+1,jk) ) |
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| 88 | END DO |
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| 89 | END DO |
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[1566] | 90 | DO jj = 2, jpjm1 ! divergence of horizontal momentum fluxes |
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[643] | 91 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 92 | zbu = e1u(ji,jj) * e2u(ji,jj) * fse3u(ji,jj,jk) |
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| 93 | zbv = e1v(ji,jj) * e2v(ji,jj) * fse3v(ji,jj,jk) |
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[1566] | 94 | ! |
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| 95 | ua(ji,jj,jk) = ua(ji,jj,jk) - ( zfu_t(ji+1,jj ,jk) - zfu_t(ji ,jj ,jk) & |
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| 96 | & + zfv_f(ji ,jj ,jk) - zfv_f(ji ,jj-1,jk) ) / zbu |
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| 97 | va(ji,jj,jk) = va(ji,jj,jk) - ( zfu_f(ji ,jj ,jk) - zfu_f(ji-1,jj ,jk) & |
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| 98 | & + zfv_t(ji ,jj+1,jk) - zfv_t(ji ,jj ,jk) ) / zbv |
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[643] | 99 | END DO |
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| 100 | END DO |
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[1566] | 101 | END DO |
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| 102 | ! |
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| 103 | IF( l_trddyn ) THEN ! save the horizontal advection trend for diagnostic |
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[1129] | 104 | zfu_uw(:,:,:) = ua(:,:,:) - zfu_uw(:,:,:) |
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| 105 | zfv_vw(:,:,:) = va(:,:,:) - zfv_vw(:,:,:) |
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[4990] | 106 | CALL trd_dyn( zfu_uw, zfv_vw, jpdyn_keg, kt ) |
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[1129] | 107 | zfu_t(:,:,:) = ua(:,:,:) |
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| 108 | zfv_t(:,:,:) = va(:,:,:) |
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| 109 | ENDIF |
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[1566] | 110 | ! |
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[1129] | 111 | |
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[1566] | 112 | ! ! ==================== ! |
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| 113 | ! ! Vertical advection ! |
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| 114 | DO jk = 1, jpkm1 ! ==================== ! |
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| 115 | ! ! Vertical volume fluxesÊ |
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[643] | 116 | zfw(:,:,jk) = 0.25 * e1t(:,:) * e2t(:,:) * wn(:,:,jk) |
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[1566] | 117 | ! |
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| 118 | IF( jk == 1 ) THEN ! surface/bottom advective fluxes |
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| 119 | zfu_uw(:,:,jpk) = 0.e0 ! Bottom value : flux set to zero |
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[643] | 120 | zfv_vw(:,:,jpk) = 0.e0 |
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[1566] | 121 | ! ! Surface value : |
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| 122 | IF( lk_vvl ) THEN ! variable volume : flux set to zero |
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[643] | 123 | zfu_uw(:,:, 1 ) = 0.e0 |
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| 124 | zfv_vw(:,:, 1 ) = 0.e0 |
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[1566] | 125 | ELSE ! constant volume : advection through the surface |
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[643] | 126 | DO jj = 2, jpjm1 |
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| 127 | DO ji = fs_2, fs_jpim1 |
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| 128 | zfu_uw(ji,jj, 1 ) = 2.e0 * ( zfw(ji,jj,1) + zfw(ji+1,jj ,1) ) * un(ji,jj,1) |
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| 129 | zfv_vw(ji,jj, 1 ) = 2.e0 * ( zfw(ji,jj,1) + zfw(ji ,jj+1,1) ) * vn(ji,jj,1) |
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| 130 | END DO |
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| 131 | END DO |
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| 132 | ENDIF |
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[1566] | 133 | ELSE ! interior fluxes |
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[643] | 134 | DO jj = 2, jpjm1 |
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| 135 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 136 | zfu_uw(ji,jj,jk) = ( zfw(ji,jj,jk)+ zfw(ji+1,jj ,jk) ) * ( un(ji,jj,jk) + un(ji,jj,jk-1) ) |
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| 137 | zfv_vw(ji,jj,jk) = ( zfw(ji,jj,jk)+ zfw(ji ,jj+1,jk) ) * ( vn(ji,jj,jk) + vn(ji,jj,jk-1) ) |
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| 138 | END DO |
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| 139 | END DO |
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| 140 | ENDIF |
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| 141 | END DO |
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[1566] | 142 | DO jk = 1, jpkm1 ! divergence of vertical momentum flux divergence |
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[643] | 143 | DO jj = 2, jpjm1 |
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| 144 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[1566] | 145 | ua(ji,jj,jk) = ua(ji,jj,jk) - ( zfu_uw(ji,jj,jk) - zfu_uw(ji,jj,jk+1) ) & |
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[643] | 146 | & / ( e1u(ji,jj) * e2u(ji,jj) * fse3u(ji,jj,jk) ) |
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[1566] | 147 | va(ji,jj,jk) = va(ji,jj,jk) - ( zfv_vw(ji,jj,jk) - zfv_vw(ji,jj,jk+1) ) & |
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[643] | 148 | & / ( e1v(ji,jj) * e2v(ji,jj) * fse3v(ji,jj,jk) ) |
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| 149 | END DO |
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| 150 | END DO |
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| 151 | END DO |
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[1566] | 152 | ! |
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| 153 | IF( l_trddyn ) THEN ! save the vertical advection trend for diagnostic |
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[1129] | 154 | zfu_t(:,:,:) = ua(:,:,:) - zfu_t(:,:,:) |
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| 155 | zfv_t(:,:,:) = va(:,:,:) - zfv_t(:,:,:) |
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[4990] | 156 | CALL trd_dyn( zfu_t, zfv_t, jpdyn_zad, kt ) |
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[1129] | 157 | ENDIF |
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[1566] | 158 | ! ! Control print |
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[1129] | 159 | IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' cen2 adv - Ua: ', mask1=umask, & |
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| 160 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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| 161 | ! |
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[3294] | 162 | CALL wrk_dealloc( jpi, jpj, jpk, zfu_t, zfv_t, zfu_f, zfv_f, zfu_uw, zfv_vw, zfu, zfv, zfw ) |
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[2715] | 163 | ! |
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[3294] | 164 | IF( nn_timing == 1 ) CALL timing_stop('dyn_adv_cen2') |
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| 165 | ! |
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[643] | 166 | END SUBROUTINE dyn_adv_cen2 |
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| 167 | |
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| 168 | !!============================================================================== |
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| 169 | END MODULE dynadv_cen2 |
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