[3] | 1 | MODULE traldf_iso |
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[503] | 2 | !!====================================================================== |
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[457] | 3 | !! *** MODULE traldf_iso *** |
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[2528] | 4 | !! Ocean tracers: horizontal component of the lateral tracer mixing trend |
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[503] | 5 | !!====================================================================== |
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[2528] | 6 | !! History : OPA ! 1994-08 (G. Madec, M. Imbard) |
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| 7 | !! 8.0 ! 1997-05 (G. Madec) split into traldf and trazdf |
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| 8 | !! NEMO ! 2002-08 (G. Madec) Free form, F90 |
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| 9 | !! 1.0 ! 2005-11 (G. Madec) merge traldf and trazdf :-) |
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| 10 | !! 3.3 ! 2010-09 (C. Ethe, G. Madec) Merge TRA-TRC |
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[503] | 11 | !!---------------------------------------------------------------------- |
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[457] | 12 | #if defined key_ldfslp || defined key_esopa |
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[3] | 13 | !!---------------------------------------------------------------------- |
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[457] | 14 | !! 'key_ldfslp' slope of the lateral diffusive direction |
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[3] | 15 | !!---------------------------------------------------------------------- |
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[457] | 16 | !! tra_ldf_iso : update the tracer trend with the horizontal |
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| 17 | !! component of a iso-neutral laplacian operator |
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| 18 | !! and with the vertical part of |
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| 19 | !! the isopycnal or geopotential s-coord. operator |
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[3] | 20 | !!---------------------------------------------------------------------- |
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[457] | 21 | USE oce ! ocean dynamics and active tracers |
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| 22 | USE dom_oce ! ocean space and time domain |
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[2528] | 23 | USE trc_oce ! share passive tracers/Ocean variables |
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| 24 | USE zdf_oce ! ocean vertical physics |
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[74] | 25 | USE ldftra_oce ! ocean active tracers: lateral physics |
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[3] | 26 | USE ldfslp ! iso-neutral slopes |
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[132] | 27 | USE diaptr ! poleward transport diagnostics |
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[2528] | 28 | USE in_out_manager ! I/O manager |
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| 29 | USE iom ! I/O library |
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[1756] | 30 | USE phycst ! physical constants |
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| 31 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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[3294] | 32 | USE wrk_nemo ! Memory Allocation |
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| 33 | USE timing ! Timing |
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[3] | 34 | |
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| 35 | IMPLICIT NONE |
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| 36 | PRIVATE |
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| 37 | |
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[503] | 38 | PUBLIC tra_ldf_iso ! routine called by step.F90 |
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[3] | 39 | |
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| 40 | !! * Substitutions |
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| 41 | # include "domzgr_substitute.h90" |
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| 42 | # include "ldftra_substitute.h90" |
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| 43 | # include "vectopt_loop_substitute.h90" |
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| 44 | !!---------------------------------------------------------------------- |
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[2528] | 45 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 46 | !! $Id$ |
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| 47 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[247] | 48 | !!---------------------------------------------------------------------- |
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[3] | 49 | CONTAINS |
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| 50 | |
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[3294] | 51 | SUBROUTINE tra_ldf_iso( kt, kit000, cdtype, pgu, pgv, & |
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[5832] | 52 | & pgui, pgvi, & |
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[2528] | 53 | & ptb, pta, kjpt, pahtb0 ) |
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[3] | 54 | !!---------------------------------------------------------------------- |
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| 55 | !! *** ROUTINE tra_ldf_iso *** |
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[457] | 56 | !! |
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[3] | 57 | !! ** Purpose : Compute the before horizontal tracer (t & s) diffusive |
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[457] | 58 | !! trend for a laplacian tensor (ezxcept the dz[ dz[.] ] term) and |
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| 59 | !! add it to the general trend of tracer equation. |
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[3] | 60 | !! |
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| 61 | !! ** Method : The horizontal component of the lateral diffusive trends |
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| 62 | !! is provided by a 2nd order operator rotated along neural or geopo- |
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| 63 | !! tential surfaces to which an eddy induced advection can be added |
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| 64 | !! It is computed using before fields (forward in time) and isopyc- |
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| 65 | !! nal or geopotential slopes computed in routine ldfslp. |
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| 66 | !! |
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[2528] | 67 | !! 1st part : masked horizontal derivative of T ( di[ t ] ) |
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[457] | 68 | !! ======== with partial cell update if ln_zps=T. |
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| 69 | !! |
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| 70 | !! 2nd part : horizontal fluxes of the lateral mixing operator |
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| 71 | !! ======== |
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[3] | 72 | !! zftu = (aht+ahtb0) e2u*e3u/e1u di[ tb ] |
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| 73 | !! - aht e2u*uslp dk[ mi(mk(tb)) ] |
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| 74 | !! zftv = (aht+ahtb0) e1v*e3v/e2v dj[ tb ] |
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| 75 | !! - aht e2u*vslp dk[ mj(mk(tb)) ] |
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| 76 | !! take the horizontal divergence of the fluxes: |
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| 77 | !! difft = 1/(e1t*e2t*e3t) { di-1[ zftu ] + dj-1[ zftv ] } |
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| 78 | !! Add this trend to the general trend (ta,sa): |
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| 79 | !! ta = ta + difft |
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| 80 | !! |
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[457] | 81 | !! 3rd part: vertical trends of the lateral mixing operator |
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| 82 | !! ======== (excluding the vertical flux proportional to dk[t] ) |
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| 83 | !! vertical fluxes associated with the rotated lateral mixing: |
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| 84 | !! zftw =-aht { e2t*wslpi di[ mi(mk(tb)) ] |
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| 85 | !! + e1t*wslpj dj[ mj(mk(tb)) ] } |
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| 86 | !! take the horizontal divergence of the fluxes: |
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| 87 | !! difft = 1/(e1t*e2t*e3t) dk[ zftw ] |
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| 88 | !! Add this trend to the general trend (ta,sa): |
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[2528] | 89 | !! pta = pta + difft |
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[3] | 90 | !! |
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[2528] | 91 | !! ** Action : Update pta arrays with the before rotated diffusion |
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[503] | 92 | !!---------------------------------------------------------------------- |
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[2715] | 93 | USE oce , ONLY: zftu => ua , zftv => va ! (ua,va) used as workspace |
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| 94 | ! |
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[2528] | 95 | INTEGER , INTENT(in ) :: kt ! ocean time-step index |
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[3294] | 96 | INTEGER , INTENT(in ) :: kit000 ! first time step index |
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[2528] | 97 | CHARACTER(len=3) , INTENT(in ) :: cdtype ! =TRA or TRC (tracer indicator) |
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| 98 | INTEGER , INTENT(in ) :: kjpt ! number of tracers |
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[5832] | 99 | REAL(wp), DIMENSION(jpi,jpj ,kjpt), INTENT(in ) :: pgu , pgv ! tracer gradient at pstep levels |
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| 100 | REAL(wp), DIMENSION(jpi,jpj ,kjpt), INTENT(in ) :: pgui, pgvi ! tracer gradient at pstep levels |
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[2528] | 101 | REAL(wp), DIMENSION(jpi,jpj,jpk,kjpt), INTENT(in ) :: ptb ! before and now tracer fields |
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| 102 | REAL(wp), DIMENSION(jpi,jpj,jpk,kjpt), INTENT(inout) :: pta ! tracer trend |
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| 103 | REAL(wp) , INTENT(in ) :: pahtb0 ! background diffusion coef |
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[2715] | 104 | ! |
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[2528] | 105 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
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[5832] | 106 | INTEGER :: ikt |
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[2528] | 107 | REAL(wp) :: zmsku, zabe1, zcof1, zcoef3 ! local scalars |
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| 108 | REAL(wp) :: zmskv, zabe2, zcof2, zcoef4 ! - - |
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| 109 | REAL(wp) :: zcoef0, zbtr, ztra ! - - |
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[5832] | 110 | REAL(wp), POINTER, DIMENSION(:,: ) :: z2d |
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| 111 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zdkt, zdk1t, zdit, zdjt, ztfw |
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[3] | 112 | !!---------------------------------------------------------------------- |
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[3294] | 113 | ! |
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| 114 | IF( nn_timing == 1 ) CALL timing_start('tra_ldf_iso') |
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| 115 | ! |
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[5832] | 116 | CALL wrk_alloc( jpi, jpj, z2d ) |
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| 117 | CALL wrk_alloc( jpi, jpj, jpk, zdit, zdjt, ztfw, zdkt, zdk1t ) |
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[3294] | 118 | ! |
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[3] | 119 | |
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[3294] | 120 | IF( kt == kit000 ) THEN |
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[3] | 121 | IF(lwp) WRITE(numout,*) |
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[2528] | 122 | IF(lwp) WRITE(numout,*) 'tra_ldf_iso : rotated laplacian diffusion operator on ', cdtype |
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[457] | 123 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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[3] | 124 | ENDIF |
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[2528] | 125 | ! |
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| 126 | ! ! =========== |
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| 127 | DO jn = 1, kjpt ! tracer loop |
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| 128 | ! ! =========== |
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| 129 | ! |
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| 130 | !!---------------------------------------------------------------------- |
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| 131 | !! I - masked horizontal derivative |
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| 132 | !!---------------------------------------------------------------------- |
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| 133 | !!bug ajout.... why? ( 1,jpj,:) and (jpi,1,:) should be sufficient.... |
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| 134 | zdit (1,:,:) = 0.e0 ; zdit (jpi,:,:) = 0.e0 |
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| 135 | zdjt (1,:,:) = 0.e0 ; zdjt (jpi,:,:) = 0.e0 |
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| 136 | !!end |
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[3] | 137 | |
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[2528] | 138 | ! Horizontal tracer gradient |
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| 139 | DO jk = 1, jpkm1 |
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| 140 | DO jj = 1, jpjm1 |
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| 141 | DO ji = 1, fs_jpim1 ! vector opt. |
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| 142 | zdit(ji,jj,jk) = ( ptb(ji+1,jj ,jk,jn) - ptb(ji,jj,jk,jn) ) * umask(ji,jj,jk) |
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| 143 | zdjt(ji,jj,jk) = ( ptb(ji ,jj+1,jk,jn) - ptb(ji,jj,jk,jn) ) * vmask(ji,jj,jk) |
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| 144 | END DO |
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[457] | 145 | END DO |
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| 146 | END DO |
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[5832] | 147 | |
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| 148 | ! partial cell correction |
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[2528] | 149 | IF( ln_zps ) THEN ! partial steps correction at the last ocean level |
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| 150 | DO jj = 1, jpjm1 |
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| 151 | DO ji = 1, fs_jpim1 ! vector opt. |
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[5832] | 152 | ! IF useless if zpshde defines pgu everywhere |
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[2528] | 153 | zdit(ji,jj,mbku(ji,jj)) = pgu(ji,jj,jn) |
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[5832] | 154 | zdjt(ji,jj,mbkv(ji,jj)) = pgv(ji,jj,jn) |
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[2528] | 155 | END DO |
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[457] | 156 | END DO |
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[3] | 157 | ENDIF |
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[5832] | 158 | IF( ln_zps .AND. ln_isfcav ) THEN ! partial steps correction at the first wet level beneath a cavity |
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| 159 | DO jj = 1, jpjm1 |
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| 160 | DO ji = 1, fs_jpim1 ! vector opt. |
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| 161 | IF (miku(ji,jj) > 1) zdit(ji,jj,miku(ji,jj)) = pgui(ji,jj,jn) |
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| 162 | IF (mikv(ji,jj) > 1) zdjt(ji,jj,mikv(ji,jj)) = pgvi(ji,jj,jn) |
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| 163 | END DO |
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| 164 | END DO |
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| 165 | END IF |
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[3] | 166 | |
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[2528] | 167 | !!---------------------------------------------------------------------- |
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| 168 | !! II - horizontal trend (full) |
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| 169 | !!---------------------------------------------------------------------- |
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[5832] | 170 | !!!!!!!!!!CDIR PARALLEL DO PRIVATE( zdk1t ) |
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[2528] | 171 | ! 1. Vertical tracer gradient at level jk and jk+1 |
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| 172 | ! ------------------------------------------------ |
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[5832] | 173 | ! |
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| 174 | ! interior value |
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| 175 | DO jk = 2, jpkm1 |
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| 176 | DO jj = 1, jpj |
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| 177 | DO ji = 1, jpi ! vector opt. |
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| 178 | zdk1t(ji,jj,jk) = ( ptb(ji,jj,jk,jn ) - ptb(ji,jj,jk+1,jn) ) * wmask(ji,jj,jk+1) |
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| 179 | ! |
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| 180 | zdkt(ji,jj,jk) = ( ptb(ji,jj,jk-1,jn) - ptb(ji,jj,jk,jn ) ) * wmask(ji,jj,jk) |
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| 181 | END DO |
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| 182 | END DO |
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| 183 | END DO |
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| 184 | ! surface boundary condition: zdkt(jk=1)=zdkt(jk=2) |
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| 185 | zdk1t(:,:,1) = ( ptb(:,:,1,jn ) - ptb(:,:,2,jn) ) * wmask(:,:,2) |
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| 186 | zdkt (:,:,1) = zdk1t(:,:,1) |
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| 187 | IF ( ln_isfcav ) THEN |
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| 188 | DO jj = 1, jpj |
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| 189 | DO ji = 1, jpi ! vector opt. |
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| 190 | ikt = mikt(ji,jj) ! surface level |
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| 191 | zdk1t(ji,jj,ikt) = ( ptb(ji,jj,ikt,jn ) - ptb(ji,jj,ikt+1,jn) ) * wmask(ji,jj,ikt+1) |
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| 192 | zdkt (ji,jj,ikt) = zdk1t(ji,jj,ikt) |
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| 193 | END DO |
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| 194 | END DO |
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| 195 | END IF |
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[3] | 196 | |
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[5832] | 197 | ! 2. Horizontal fluxes |
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| 198 | ! -------------------- |
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| 199 | DO jk = 1, jpkm1 |
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[2528] | 200 | DO jj = 1 , jpjm1 |
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| 201 | DO ji = 1, fs_jpim1 ! vector opt. |
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[4292] | 202 | zabe1 = ( fsahtu(ji,jj,jk) + pahtb0 ) * re2u_e1u(ji,jj) * fse3u_n(ji,jj,jk) |
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| 203 | zabe2 = ( fsahtv(ji,jj,jk) + pahtb0 ) * re1v_e2v(ji,jj) * fse3v_n(ji,jj,jk) |
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[2528] | 204 | ! |
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| 205 | zmsku = 1. / MAX( tmask(ji+1,jj,jk ) + tmask(ji,jj,jk+1) & |
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| 206 | & + tmask(ji+1,jj,jk+1) + tmask(ji,jj,jk ), 1. ) |
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| 207 | ! |
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| 208 | zmskv = 1. / MAX( tmask(ji,jj+1,jk ) + tmask(ji,jj,jk+1) & |
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| 209 | & + tmask(ji,jj+1,jk+1) + tmask(ji,jj,jk ), 1. ) |
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| 210 | ! |
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| 211 | zcof1 = - fsahtu(ji,jj,jk) * e2u(ji,jj) * uslp(ji,jj,jk) * zmsku |
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| 212 | zcof2 = - fsahtv(ji,jj,jk) * e1v(ji,jj) * vslp(ji,jj,jk) * zmskv |
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| 213 | ! |
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| 214 | zftu(ji,jj,jk ) = ( zabe1 * zdit(ji,jj,jk) & |
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[5832] | 215 | & + zcof1 * ( zdkt (ji+1,jj,jk) + zdk1t(ji,jj,jk) & |
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| 216 | & + zdk1t(ji+1,jj,jk) + zdkt (ji,jj,jk) ) ) * umask(ji,jj,jk) |
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[2528] | 217 | zftv(ji,jj,jk) = ( zabe2 * zdjt(ji,jj,jk) & |
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[5832] | 218 | & + zcof2 * ( zdkt (ji,jj+1,jk) + zdk1t(ji,jj,jk) & |
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| 219 | & + zdk1t(ji,jj+1,jk) + zdkt (ji,jj,jk) ) ) * vmask(ji,jj,jk) |
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[2528] | 220 | END DO |
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[3] | 221 | END DO |
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| 222 | |
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[2528] | 223 | ! II.4 Second derivative (divergence) and add to the general trend |
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| 224 | ! ---------------------------------------------------------------- |
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| 225 | DO jj = 2 , jpjm1 |
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| 226 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[4292] | 227 | zbtr = 1.0 / ( e12t(ji,jj) * fse3t_n(ji,jj,jk) ) |
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[2528] | 228 | ztra = zbtr * ( zftu(ji,jj,jk) - zftu(ji-1,jj,jk) + zftv(ji,jj,jk) - zftv(ji,jj-1,jk) ) |
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| 229 | pta(ji,jj,jk,jn) = pta(ji,jj,jk,jn) + ztra |
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| 230 | END DO |
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[3] | 231 | END DO |
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[2528] | 232 | ! ! =============== |
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| 233 | END DO ! End of slab |
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| 234 | ! ! =============== |
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| 235 | ! |
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| 236 | ! "Poleward" diffusive heat or salt transports (T-S case only) |
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[5832] | 237 | IF( cdtype == 'TRA' .AND. ln_diaptr ) THEN |
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[3805] | 238 | ! note sign is reversed to give down-gradient diffusive transports (#1043) |
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[5832] | 239 | IF( jn == jp_tem) htr_ldf(:) = ptr_sj( -zftv(:,:,:) ) |
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| 240 | IF( jn == jp_sal) str_ldf(:) = ptr_sj( -zftv(:,:,:) ) |
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[2528] | 241 | ENDIF |
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| 242 | |
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[5832] | 243 | IF( iom_use("udiff_heattr") .OR. iom_use("vdiff_heattr") ) THEN |
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| 244 | ! |
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| 245 | IF( cdtype == 'TRA' .AND. jn == jp_tem ) THEN |
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| 246 | z2d(:,:) = 0._wp |
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| 247 | DO jk = 1, jpkm1 |
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| 248 | DO jj = 2, jpjm1 |
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| 249 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 250 | z2d(ji,jj) = z2d(ji,jj) + zftu(ji,jj,jk) |
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| 251 | END DO |
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[2528] | 252 | END DO |
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| 253 | END DO |
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[5832] | 254 | z2d(:,:) = - rau0_rcp * z2d(:,:) ! note sign is reversed to give down-gradient diffusive transports (#1043) |
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| 255 | CALL lbc_lnk( z2d, 'U', -1. ) |
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| 256 | CALL iom_put( "udiff_heattr", z2d ) ! heat transport in i-direction |
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| 257 | ! |
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| 258 | z2d(:,:) = 0._wp |
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| 259 | DO jk = 1, jpkm1 |
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| 260 | DO jj = 2, jpjm1 |
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| 261 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 262 | z2d(ji,jj) = z2d(ji,jj) + zftv(ji,jj,jk) |
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| 263 | END DO |
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[2528] | 264 | END DO |
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| 265 | END DO |
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[5832] | 266 | z2d(:,:) = - rau0_rcp * z2d(:,:) ! note sign is reversed to give down-gradient diffusive transports (#1043) |
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| 267 | CALL lbc_lnk( z2d, 'V', -1. ) |
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| 268 | CALL iom_put( "vdiff_heattr", z2d ) ! heat transport in i-direction |
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| 269 | END IF |
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| 270 | ! |
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| 271 | ENDIF |
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[3] | 272 | |
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[2528] | 273 | !!---------------------------------------------------------------------- |
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| 274 | !! III - vertical trend of T & S (extra diagonal terms only) |
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| 275 | !!---------------------------------------------------------------------- |
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| 276 | |
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| 277 | ! Local constant initialization |
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| 278 | ! ----------------------------- |
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| 279 | ztfw(1,:,:) = 0.e0 ; ztfw(jpi,:,:) = 0.e0 |
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| 280 | |
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| 281 | ! Vertical fluxes |
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| 282 | ! --------------- |
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| 283 | |
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| 284 | ! Surface and bottom vertical fluxes set to zero |
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| 285 | ztfw(:,:, 1 ) = 0.e0 ; ztfw(:,:,jpk) = 0.e0 |
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| 286 | |
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| 287 | ! interior (2=<jk=<jpk-1) |
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| 288 | DO jk = 2, jpkm1 |
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| 289 | DO jj = 2, jpjm1 |
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| 290 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[5832] | 291 | zcoef0 = - fsahtw(ji,jj,jk) * wmask(ji,jj,jk) |
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[2528] | 292 | ! |
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| 293 | zmsku = 1./MAX( umask(ji ,jj,jk-1) + umask(ji-1,jj,jk) & |
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| 294 | & + umask(ji-1,jj,jk-1) + umask(ji ,jj,jk), 1. ) |
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| 295 | zmskv = 1./MAX( vmask(ji,jj ,jk-1) + vmask(ji,jj-1,jk) & |
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| 296 | & + vmask(ji,jj-1,jk-1) + vmask(ji,jj ,jk), 1. ) |
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| 297 | ! |
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| 298 | zcoef3 = zcoef0 * e2t(ji,jj) * zmsku * wslpi (ji,jj,jk) |
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| 299 | zcoef4 = zcoef0 * e1t(ji,jj) * zmskv * wslpj (ji,jj,jk) |
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| 300 | ! |
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| 301 | ztfw(ji,jj,jk) = zcoef3 * ( zdit(ji ,jj ,jk-1) + zdit(ji-1,jj ,jk) & |
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| 302 | & + zdit(ji-1,jj ,jk-1) + zdit(ji ,jj ,jk) ) & |
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| 303 | & + zcoef4 * ( zdjt(ji ,jj ,jk-1) + zdjt(ji ,jj-1,jk) & |
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| 304 | & + zdjt(ji ,jj-1,jk-1) + zdjt(ji ,jj ,jk) ) |
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| 305 | END DO |
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[457] | 306 | END DO |
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| 307 | END DO |
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[2528] | 308 | |
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| 309 | |
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| 310 | ! I.5 Divergence of vertical fluxes added to the general tracer trend |
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| 311 | ! ------------------------------------------------------------------- |
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| 312 | DO jk = 1, jpkm1 |
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| 313 | DO jj = 2, jpjm1 |
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| 314 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[4292] | 315 | zbtr = 1.0 / ( e12t(ji,jj) * fse3t_n(ji,jj,jk) ) |
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[2528] | 316 | ztra = ( ztfw(ji,jj,jk) - ztfw(ji,jj,jk+1) ) * zbtr |
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| 317 | pta(ji,jj,jk,jn) = pta(ji,jj,jk,jn) + ztra |
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| 318 | END DO |
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[457] | 319 | END DO |
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| 320 | END DO |
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[2528] | 321 | ! |
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[457] | 322 | END DO |
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[503] | 323 | ! |
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[5832] | 324 | CALL wrk_dealloc( jpi, jpj, z2d ) |
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| 325 | CALL wrk_dealloc( jpi, jpj, jpk, zdit, zdjt, ztfw, zdkt, zdk1t ) |
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[2715] | 326 | ! |
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[3294] | 327 | IF( nn_timing == 1 ) CALL timing_stop('tra_ldf_iso') |
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| 328 | ! |
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[3] | 329 | END SUBROUTINE tra_ldf_iso |
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| 330 | |
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| 331 | #else |
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| 332 | !!---------------------------------------------------------------------- |
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[457] | 333 | !! default option : Dummy code NO rotation of the diffusive tensor |
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[3] | 334 | !!---------------------------------------------------------------------- |
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| 335 | CONTAINS |
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[5832] | 336 | SUBROUTINE tra_ldf_iso( kt, kit000,cdtype, pgu, pgv, pgui, pgvi, ptb, pta, kjpt, pahtb0 ) ! Empty routine |
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[3294] | 337 | INTEGER:: kt, kit000 |
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[2528] | 338 | CHARACTER(len=3) :: cdtype |
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[5832] | 339 | REAL, DIMENSION(:,:,:) :: pgu, pgv, pgui, pgvi ! tracer gradient at pstep levels |
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[2528] | 340 | REAL, DIMENSION(:,:,:,:) :: ptb, pta |
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[3294] | 341 | WRITE(*,*) 'tra_ldf_iso: You should not have seen this print! error?', kt, kit000, cdtype, & |
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| 342 | & pgu(1,1,1), pgv(1,1,1), ptb(1,1,1,1), pta(1,1,1,1), kjpt, pahtb0 |
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[3] | 343 | END SUBROUTINE tra_ldf_iso |
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| 344 | #endif |
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| 345 | |
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| 346 | !!============================================================================== |
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| 347 | END MODULE traldf_iso |
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