[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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[1566] | 17 | USE trdmod_oce ! ocean variables trends |
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| 18 | USE trdmod ! ocean dynamics trends |
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[643] | 19 | USE in_out_manager ! I/O manager |
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[1129] | 20 | USE prtctl ! Print control |
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[643] | 21 | |
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| 22 | IMPLICIT NONE |
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| 23 | PRIVATE |
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| 24 | |
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[1566] | 25 | PUBLIC dyn_adv_cen2 ! routine called by step.F90 |
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[643] | 26 | |
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| 27 | !! * Substitutions |
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| 28 | # include "domzgr_substitute.h90" |
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| 29 | # include "vectopt_loop_substitute.h90" |
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| 30 | !!---------------------------------------------------------------------- |
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[1566] | 31 | !! NEMO/OPA 3.2 , LODYC-IPSL (2009) |
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[1152] | 32 | !! $Id$ |
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[2287] | 33 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[643] | 34 | !!---------------------------------------------------------------------- |
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| 35 | |
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| 36 | CONTAINS |
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| 37 | |
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| 38 | SUBROUTINE dyn_adv_cen2( kt ) |
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| 39 | !!---------------------------------------------------------------------- |
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| 40 | !! *** ROUTINE dyn_adv_cen2 *** |
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| 41 | !! |
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| 42 | !! ** Purpose : Compute the now momentum advection trend in flux form |
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[1566] | 43 | !! and the general trend of the momentum equation. |
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[643] | 44 | !! |
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| 45 | !! ** Method : Trend evaluated using now fields (centered in time) |
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| 46 | !! |
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[1566] | 47 | !! ** Action : (ua,va) updated with the now vorticity term trend |
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[643] | 48 | !!---------------------------------------------------------------------- |
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[1566] | 49 | USE oce, ONLY: zfu => ta ! use ta as 3D workspace |
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| 50 | USE oce, ONLY: zfv => sa ! use sa as 3D workspace |
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| 51 | !! |
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| 52 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 53 | !! |
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| 54 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 55 | REAL(wp) :: zbu, zbv ! temporary scalars |
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[643] | 56 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zfu_t, zfu_f, zfu_uw ! 3D workspace |
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[1566] | 57 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zfv_t, zfv_f, zfv_vw ! - - |
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| 58 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zfw ! - - |
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[643] | 59 | !!---------------------------------------------------------------------- |
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| 60 | |
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| 61 | IF( kt == nit000 ) THEN |
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| 62 | IF(lwp) WRITE(numout,*) |
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| 63 | IF(lwp) WRITE(numout,*) 'dyn_adv_cen2 : 2nd order flux form momentum advection' |
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| 64 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~' |
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| 65 | ENDIF |
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| 66 | |
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[1129] | 67 | IF( l_trddyn ) THEN ! Save ua and va trends |
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| 68 | zfu_uw(:,:,:) = ua(:,:,:) |
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| 69 | zfv_vw(:,:,:) = va(:,:,:) |
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| 70 | ENDIF |
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[643] | 71 | |
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[1566] | 72 | ! ! ====================== ! |
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| 73 | ! ! Horizontal advection ! |
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| 74 | DO jk = 1, jpkm1 ! ====================== ! |
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| 75 | ! ! horizontal volume fluxes |
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[643] | 76 | zfu(:,:,jk) = 0.25 * e2u(:,:) * fse3u(:,:,jk) * un(:,:,jk) |
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| 77 | zfv(:,:,jk) = 0.25 * e1v(:,:) * fse3v(:,:,jk) * vn(:,:,jk) |
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[1566] | 78 | ! |
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| 79 | DO jj = 1, jpjm1 ! horizontal momentum fluxes at T- and F-point |
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[643] | 80 | DO ji = 1, fs_jpim1 ! vector opt. |
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| 81 | 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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| 82 | 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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| 83 | 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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| 84 | 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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| 85 | END DO |
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| 86 | END DO |
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[1566] | 87 | DO jj = 2, jpjm1 ! divergence of horizontal momentum fluxes |
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[643] | 88 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 89 | zbu = e1u(ji,jj) * e2u(ji,jj) * fse3u(ji,jj,jk) |
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| 90 | zbv = e1v(ji,jj) * e2v(ji,jj) * fse3v(ji,jj,jk) |
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[1566] | 91 | ! |
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| 92 | ua(ji,jj,jk) = ua(ji,jj,jk) - ( zfu_t(ji+1,jj ,jk) - zfu_t(ji ,jj ,jk) & |
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| 93 | & + zfv_f(ji ,jj ,jk) - zfv_f(ji ,jj-1,jk) ) / zbu |
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| 94 | va(ji,jj,jk) = va(ji,jj,jk) - ( zfu_f(ji ,jj ,jk) - zfu_f(ji-1,jj ,jk) & |
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| 95 | & + zfv_t(ji ,jj+1,jk) - zfv_t(ji ,jj ,jk) ) / zbv |
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[643] | 96 | END DO |
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| 97 | END DO |
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[1566] | 98 | END DO |
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| 99 | ! |
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| 100 | IF( l_trddyn ) THEN ! save the horizontal advection trend for diagnostic |
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[1129] | 101 | zfu_uw(:,:,:) = ua(:,:,:) - zfu_uw(:,:,:) |
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| 102 | zfv_vw(:,:,:) = va(:,:,:) - zfv_vw(:,:,:) |
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| 103 | CALL trd_mod( zfu_uw, zfv_vw, jpdyn_trd_had, 'DYN', kt ) |
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| 104 | zfu_t(:,:,:) = ua(:,:,:) |
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| 105 | zfv_t(:,:,:) = va(:,:,:) |
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| 106 | ENDIF |
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[1566] | 107 | ! |
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[1129] | 108 | |
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[1566] | 109 | ! ! ==================== ! |
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| 110 | ! ! Vertical advection ! |
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| 111 | DO jk = 1, jpkm1 ! ==================== ! |
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| 112 | ! ! Vertical volume fluxesÊ |
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[643] | 113 | zfw(:,:,jk) = 0.25 * e1t(:,:) * e2t(:,:) * wn(:,:,jk) |
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[1566] | 114 | ! |
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| 115 | IF( jk == 1 ) THEN ! surface/bottom advective fluxes |
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| 116 | zfu_uw(:,:,jpk) = 0.e0 ! Bottom value : flux set to zero |
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[643] | 117 | zfv_vw(:,:,jpk) = 0.e0 |
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[1566] | 118 | ! ! Surface value : |
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| 119 | IF( lk_vvl ) THEN ! variable volume : flux set to zero |
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[643] | 120 | zfu_uw(:,:, 1 ) = 0.e0 |
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| 121 | zfv_vw(:,:, 1 ) = 0.e0 |
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[1566] | 122 | ELSE ! constant volume : advection through the surface |
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[643] | 123 | DO jj = 2, jpjm1 |
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| 124 | DO ji = fs_2, fs_jpim1 |
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| 125 | zfu_uw(ji,jj, 1 ) = 2.e0 * ( zfw(ji,jj,1) + zfw(ji+1,jj ,1) ) * un(ji,jj,1) |
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| 126 | zfv_vw(ji,jj, 1 ) = 2.e0 * ( zfw(ji,jj,1) + zfw(ji ,jj+1,1) ) * vn(ji,jj,1) |
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| 127 | END DO |
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| 128 | END DO |
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| 129 | ENDIF |
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[1566] | 130 | ELSE ! interior fluxes |
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[643] | 131 | DO jj = 2, jpjm1 |
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| 132 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 133 | 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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| 134 | 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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| 135 | END DO |
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| 136 | END DO |
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| 137 | ENDIF |
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| 138 | END DO |
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[1566] | 139 | DO jk = 1, jpkm1 ! divergence of vertical momentum flux divergence |
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[643] | 140 | DO jj = 2, jpjm1 |
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| 141 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[1566] | 142 | ua(ji,jj,jk) = ua(ji,jj,jk) - ( zfu_uw(ji,jj,jk) - zfu_uw(ji,jj,jk+1) ) & |
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[643] | 143 | & / ( e1u(ji,jj) * e2u(ji,jj) * fse3u(ji,jj,jk) ) |
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[1566] | 144 | va(ji,jj,jk) = va(ji,jj,jk) - ( zfv_vw(ji,jj,jk) - zfv_vw(ji,jj,jk+1) ) & |
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[643] | 145 | & / ( e1v(ji,jj) * e2v(ji,jj) * fse3v(ji,jj,jk) ) |
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| 146 | END DO |
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| 147 | END DO |
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| 148 | END DO |
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[1566] | 149 | ! |
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| 150 | IF( l_trddyn ) THEN ! save the vertical advection trend for diagnostic |
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[1129] | 151 | zfu_t(:,:,:) = ua(:,:,:) - zfu_t(:,:,:) |
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| 152 | zfv_t(:,:,:) = va(:,:,:) - zfv_t(:,:,:) |
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| 153 | CALL trd_mod( zfu_t, zfv_t, jpdyn_trd_zad, 'DYN', kt ) |
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| 154 | ENDIF |
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[1566] | 155 | ! ! Control print |
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[1129] | 156 | IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' cen2 adv - Ua: ', mask1=umask, & |
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| 157 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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| 158 | ! |
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[643] | 159 | END SUBROUTINE dyn_adv_cen2 |
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| 160 | |
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| 161 | !!============================================================================== |
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| 162 | END MODULE dynadv_cen2 |
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