[5770] | 1 | MODULE traadv_mus |
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[503] | 2 | !!====================================================================== |
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[5770] | 3 | !! *** MODULE traadv_mus *** |
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[2528] | 4 | !! Ocean tracers: horizontal & vertical advective trend |
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[503] | 5 | !!====================================================================== |
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[2528] | 6 | !! History : ! 2000-06 (A.Estublier) for passive tracers |
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| 7 | !! ! 2001-08 (E.Durand, G.Madec) adapted for T & S |
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| 8 | !! NEMO 1.0 ! 2002-06 (G. Madec) F90: Free form and module |
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| 9 | !! 3.2 ! 2010-05 (C. Ethe, G. Madec) merge TRC-TRA + switch from velocity to transport |
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[3680] | 10 | !! 3.4 ! 2012-06 (P. Oddo, M. Vichi) include the upstream where needed |
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[5770] | 11 | !! 3.7 ! 2015-09 (G. Madec) add the ice-shelf cavities boundary condition |
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[503] | 12 | !!---------------------------------------------------------------------- |
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[3] | 13 | |
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| 14 | !!---------------------------------------------------------------------- |
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[5770] | 15 | !! tra_adv_mus : update the tracer trend with the horizontal |
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[3] | 16 | !! and vertical advection trends using MUSCL scheme |
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| 17 | !!---------------------------------------------------------------------- |
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[3625] | 18 | USE oce ! ocean dynamics and active tracers |
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[4990] | 19 | USE trc_oce ! share passive tracers/Ocean variables |
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[3625] | 20 | USE dom_oce ! ocean space and time domain |
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[4990] | 21 | USE trd_oce ! trends: ocean variables |
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| 22 | USE trdtra ! tracers trends manager |
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[5147] | 23 | USE sbcrnf ! river runoffs |
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[3625] | 24 | USE diaptr ! poleward transport diagnostics |
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[4990] | 25 | ! |
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[3625] | 26 | USE wrk_nemo ! Memory Allocation |
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| 27 | USE timing ! Timing |
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| 28 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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[4990] | 29 | USE in_out_manager ! I/O manager |
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| 30 | USE lib_mpp ! distribued memory computing |
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| 31 | USE lbclnk ! ocean lateral boundary condition (or mpp link) |
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[3] | 32 | |
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| 33 | IMPLICIT NONE |
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| 34 | PRIVATE |
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| 35 | |
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[5770] | 36 | PUBLIC tra_adv_mus ! routine called by traadv.F90 |
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[4990] | 37 | |
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| 38 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: upsmsk !: mixed upstream/centered scheme near some straits |
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| 39 | ! ! and in closed seas (orca 2 and 4 configurations) |
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| 40 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xind !: mixed upstream/centered index |
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| 41 | |
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[3] | 42 | !! * Substitutions |
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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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[1152] | 46 | !! $Id$ |
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[2528] | 47 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 48 | !!---------------------------------------------------------------------- |
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| 49 | CONTAINS |
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| 50 | |
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[5770] | 51 | SUBROUTINE tra_adv_mus( kt, kit000, cdtype, p2dt, pun, pvn, pwn, & |
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| 52 | & ptb, pta, kjpt, ld_msc_ups ) |
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[3] | 53 | !!---------------------------------------------------------------------- |
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[5770] | 54 | !! *** ROUTINE tra_adv_mus *** |
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[216] | 55 | !! |
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[5770] | 56 | !! ** Purpose : Compute the now trend due to total advection of tracers |
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| 57 | !! using a MUSCL scheme (Monotone Upstream-centered Scheme for |
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| 58 | !! Conservation Laws) and add it to the general tracer trend. |
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[3] | 59 | !! |
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[216] | 60 | !! ** Method : MUSCL scheme plus centered scheme at ocean boundaries |
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[5770] | 61 | !! ld_msc_ups=T : |
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[3] | 62 | !! |
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[6140] | 63 | !! ** Action : - update pta with the now advective tracer trends |
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| 64 | !! - send trends to trdtra module for further diagnostcs (l_trdtra=T) |
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| 65 | !! - htr_adv, str_adv : poleward advective heat and salt transport (ln_diaptr=T) |
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[3] | 66 | !! |
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[503] | 67 | !! References : Estubier, A., and M. Levy, Notes Techn. Pole de Modelisation |
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| 68 | !! IPSL, Sept. 2000 (http://www.lodyc.jussieu.fr/opa) |
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| 69 | !!---------------------------------------------------------------------- |
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[2528] | 70 | INTEGER , INTENT(in ) :: kt ! ocean time-step index |
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[3294] | 71 | INTEGER , INTENT(in ) :: kit000 ! first time step index |
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[2528] | 72 | CHARACTER(len=3) , INTENT(in ) :: cdtype ! =TRA or TRC (tracer indicator) |
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| 73 | INTEGER , INTENT(in ) :: kjpt ! number of tracers |
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[3718] | 74 | LOGICAL , INTENT(in ) :: ld_msc_ups ! use upstream scheme within muscl |
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[6140] | 75 | REAL(wp) , INTENT(in ) :: p2dt ! tracer time-step |
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[2528] | 76 | REAL(wp), DIMENSION(jpi,jpj,jpk ), INTENT(in ) :: pun, pvn, pwn ! 3 ocean velocity components |
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| 77 | REAL(wp), DIMENSION(jpi,jpj,jpk,kjpt), INTENT(in ) :: ptb ! before tracer field |
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| 78 | REAL(wp), DIMENSION(jpi,jpj,jpk,kjpt), INTENT(inout) :: pta ! tracer trend |
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[2715] | 79 | ! |
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[5770] | 80 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
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| 81 | INTEGER :: ierr ! local integer |
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| 82 | REAL(wp) :: zu, z0u, zzwx, zw ! local scalars |
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| 83 | REAL(wp) :: zv, z0v, zzwy, z0w ! - - |
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[6140] | 84 | REAL(wp) :: zalpha ! - - |
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[4990] | 85 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zslpx, zslpy ! 3D workspace |
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| 86 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zwx , zwy ! - - |
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[3] | 87 | !!---------------------------------------------------------------------- |
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[3294] | 88 | ! |
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[5770] | 89 | IF( nn_timing == 1 ) CALL timing_start('tra_adv_mus') |
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[3294] | 90 | ! |
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[5770] | 91 | CALL wrk_alloc( jpi,jpj,jpk, zslpx, zslpy, zwx, zwy ) |
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[3294] | 92 | ! |
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| 93 | IF( kt == kit000 ) THEN |
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[2528] | 94 | IF(lwp) WRITE(numout,*) |
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| 95 | IF(lwp) WRITE(numout,*) 'tra_adv : MUSCL advection scheme on ', cdtype |
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[3718] | 96 | IF(lwp) WRITE(numout,*) ' : mixed up-stream ', ld_msc_ups |
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[2528] | 97 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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[3680] | 98 | IF(lwp) WRITE(numout,*) |
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[2528] | 99 | ! |
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[5770] | 100 | ! Upstream / MUSCL scheme indicator |
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[3680] | 101 | ! |
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[5770] | 102 | ALLOCATE( xind(jpi,jpj,jpk), STAT=ierr ) |
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| 103 | xind(:,:,:) = 1._wp ! set equal to 1 where up-stream is not needed |
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| 104 | ! |
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| 105 | IF( ld_msc_ups ) THEN ! define the upstream indicator (if asked) |
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| 106 | ALLOCATE( upsmsk(jpi,jpj), STAT=ierr ) |
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[3718] | 107 | upsmsk(:,:) = 0._wp ! not upstream by default |
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[5770] | 108 | ! |
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[4990] | 109 | DO jk = 1, jpkm1 |
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| 110 | xind(:,:,jk) = 1._wp & ! =>1 where up-stream is not needed |
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| 111 | & - MAX ( rnfmsk(:,:) * rnfmsk_z(jk), & ! =>0 near runoff mouths (& closed sea outflows) |
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[5770] | 112 | & upsmsk(:,:) ) * tmask(:,:,jk) ! =>0 in some user defined area |
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[3718] | 113 | END DO |
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[3680] | 114 | ENDIF |
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[3718] | 115 | ! |
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| 116 | ENDIF |
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[4990] | 117 | ! |
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[6140] | 118 | DO jn = 1, kjpt !== loop over the tracers ==! |
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| 119 | ! |
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| 120 | ! !* Horizontal advective fluxes |
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| 121 | ! |
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| 122 | ! !-- first guess of the slopes |
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| 123 | zwx(:,:,jpk) = 0._wp ! bottom values |
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| 124 | zwy(:,:,jpk) = 0._wp |
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| 125 | DO jk = 1, jpkm1 ! interior values |
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[2528] | 126 | DO jj = 1, jpjm1 |
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| 127 | DO ji = 1, fs_jpim1 ! vector opt. |
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| 128 | zwx(ji,jj,jk) = umask(ji,jj,jk) * ( ptb(ji+1,jj,jk,jn) - ptb(ji,jj,jk,jn) ) |
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| 129 | zwy(ji,jj,jk) = vmask(ji,jj,jk) * ( ptb(ji,jj+1,jk,jn) - ptb(ji,jj,jk,jn) ) |
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| 130 | END DO |
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| 131 | END DO |
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[3] | 132 | END DO |
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[6140] | 133 | CALL lbc_lnk( zwx, 'U', -1. ) ! lateral boundary conditions (changed sign) |
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[2528] | 134 | CALL lbc_lnk( zwy, 'V', -1. ) |
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[6140] | 135 | ! !-- Slopes of tracer |
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| 136 | zslpx(:,:,jpk) = 0._wp ! bottom values |
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| 137 | zslpy(:,:,jpk) = 0._wp |
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| 138 | DO jk = 1, jpkm1 ! interior values |
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[2528] | 139 | DO jj = 2, jpj |
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| 140 | DO ji = fs_2, jpi ! vector opt. |
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| 141 | zslpx(ji,jj,jk) = ( zwx(ji,jj,jk) + zwx(ji-1,jj ,jk) ) & |
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| 142 | & * ( 0.25 + SIGN( 0.25, zwx(ji,jj,jk) * zwx(ji-1,jj ,jk) ) ) |
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| 143 | zslpy(ji,jj,jk) = ( zwy(ji,jj,jk) + zwy(ji ,jj-1,jk) ) & |
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| 144 | & * ( 0.25 + SIGN( 0.25, zwy(ji,jj,jk) * zwy(ji ,jj-1,jk) ) ) |
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| 145 | END DO |
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[3] | 146 | END DO |
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| 147 | END DO |
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[503] | 148 | ! |
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[6140] | 149 | DO jk = 1, jpkm1 !-- Slopes limitation |
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[2528] | 150 | DO jj = 2, jpj |
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| 151 | DO ji = fs_2, jpi ! vector opt. |
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| 152 | zslpx(ji,jj,jk) = SIGN( 1., zslpx(ji,jj,jk) ) * MIN( ABS( zslpx(ji ,jj,jk) ), & |
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| 153 | & 2.*ABS( zwx (ji-1,jj,jk) ), & |
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| 154 | & 2.*ABS( zwx (ji ,jj,jk) ) ) |
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| 155 | zslpy(ji,jj,jk) = SIGN( 1., zslpy(ji,jj,jk) ) * MIN( ABS( zslpy(ji,jj ,jk) ), & |
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| 156 | & 2.*ABS( zwy (ji,jj-1,jk) ), & |
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| 157 | & 2.*ABS( zwy (ji,jj ,jk) ) ) |
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[503] | 158 | END DO |
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[2528] | 159 | END DO |
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[5770] | 160 | END DO |
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| 161 | ! |
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[6140] | 162 | DO jk = 1, jpkm1 !-- MUSCL horizontal advective fluxes |
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[503] | 163 | DO jj = 2, jpjm1 |
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| 164 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[2528] | 165 | ! MUSCL fluxes |
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| 166 | z0u = SIGN( 0.5, pun(ji,jj,jk) ) |
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| 167 | zalpha = 0.5 - z0u |
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[6140] | 168 | zu = z0u - 0.5 * pun(ji,jj,jk) * p2dt * r1_e1e2u(ji,jj) / e3u_n(ji,jj,jk) |
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[4990] | 169 | zzwx = ptb(ji+1,jj,jk,jn) + xind(ji,jj,jk) * zu * zslpx(ji+1,jj,jk) |
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| 170 | zzwy = ptb(ji ,jj,jk,jn) + xind(ji,jj,jk) * zu * zslpx(ji ,jj,jk) |
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[2528] | 171 | zwx(ji,jj,jk) = pun(ji,jj,jk) * ( zalpha * zzwx + (1.-zalpha) * zzwy ) |
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| 172 | ! |
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| 173 | z0v = SIGN( 0.5, pvn(ji,jj,jk) ) |
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| 174 | zalpha = 0.5 - z0v |
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[6140] | 175 | zv = z0v - 0.5 * pvn(ji,jj,jk) * p2dt * r1_e1e2v(ji,jj) / e3v_n(ji,jj,jk) |
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[4990] | 176 | zzwx = ptb(ji,jj+1,jk,jn) + xind(ji,jj,jk) * zv * zslpy(ji,jj+1,jk) |
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| 177 | zzwy = ptb(ji,jj ,jk,jn) + xind(ji,jj,jk) * zv * zslpy(ji,jj ,jk) |
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[2528] | 178 | zwy(ji,jj,jk) = pvn(ji,jj,jk) * ( zalpha * zzwx + (1.-zalpha) * zzwy ) |
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[503] | 179 | END DO |
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| 180 | END DO |
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| 181 | END DO |
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[5770] | 182 | CALL lbc_lnk( zwx, 'U', -1. ) ; CALL lbc_lnk( zwy, 'V', -1. ) ! lateral boundary conditions (changed sign) |
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[503] | 183 | ! |
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[6140] | 184 | DO jk = 1, jpkm1 !-- Tracer advective trend |
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[2528] | 185 | DO jj = 2, jpjm1 |
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| 186 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[5770] | 187 | pta(ji,jj,jk,jn) = pta(ji,jj,jk,jn) - ( zwx(ji,jj,jk) - zwx(ji-1,jj ,jk ) & |
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| 188 | & + zwy(ji,jj,jk) - zwy(ji ,jj-1,jk ) ) & |
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[6140] | 189 | & * r1_e1e2t(ji,jj) / e3t_n(ji,jj,jk) |
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[3] | 190 | END DO |
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[2528] | 191 | END DO |
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| 192 | END DO |
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[6140] | 193 | ! ! trend diagnostics |
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[4990] | 194 | IF( ( cdtype == 'TRA' .AND. l_trdtra ) .OR. & |
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| 195 | &( cdtype == 'TRC' .AND. l_trdtrc ) ) THEN |
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| 196 | CALL trd_tra( kt, cdtype, jn, jptra_xad, zwx, pun, ptb(:,:,:,jn) ) |
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| 197 | CALL trd_tra( kt, cdtype, jn, jptra_yad, zwy, pvn, ptb(:,:,:,jn) ) |
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[2528] | 198 | END IF |
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[6140] | 199 | ! ! "Poleward" heat and salt transports |
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[5147] | 200 | IF( cdtype == 'TRA' .AND. ln_diaptr ) THEN |
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| 201 | IF( jn == jp_tem ) htr_adv(:) = ptr_sj( zwy(:,:,:) ) |
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| 202 | IF( jn == jp_sal ) str_adv(:) = ptr_sj( zwy(:,:,:) ) |
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[457] | 203 | ENDIF |
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[6140] | 204 | ! |
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| 205 | ! !* Vertical advective fluxes |
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| 206 | ! |
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[5770] | 207 | ! !-- first guess of the slopes |
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| 208 | zwx(:,:, 1 ) = 0._wp ! surface & bottom boundary conditions |
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[6140] | 209 | zwx(:,:,jpk) = 0._wp |
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| 210 | DO jk = 2, jpkm1 ! interior values |
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[2528] | 211 | zwx(:,:,jk) = tmask(:,:,jk) * ( ptb(:,:,jk-1,jn) - ptb(:,:,jk,jn) ) |
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[3] | 212 | END DO |
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[5770] | 213 | ! !-- Slopes of tracer |
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| 214 | zslpx(:,:,1) = 0._wp ! surface values |
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| 215 | DO jk = 2, jpkm1 ! interior value |
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[2528] | 216 | DO jj = 1, jpj |
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| 217 | DO ji = 1, jpi |
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[6140] | 218 | zslpx(ji,jj,jk) = ( zwx(ji,jj,jk) + zwx(ji,jj,jk+1) ) & |
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| 219 | & * ( 0.25 + SIGN( 0.25, zwx(ji,jj,jk) * zwx(ji,jj,jk+1) ) ) |
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[2528] | 220 | END DO |
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[3] | 221 | END DO |
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| 222 | END DO |
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[6140] | 223 | DO jk = 2, jpkm1 !-- Slopes limitation |
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| 224 | DO jj = 1, jpj ! interior values |
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[2528] | 225 | DO ji = 1, jpi |
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| 226 | zslpx(ji,jj,jk) = SIGN( 1., zslpx(ji,jj,jk) ) * MIN( ABS( zslpx(ji,jj,jk ) ), & |
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| 227 | & 2.*ABS( zwx (ji,jj,jk+1) ), & |
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| 228 | & 2.*ABS( zwx (ji,jj,jk ) ) ) |
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| 229 | END DO |
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[3] | 230 | END DO |
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| 231 | END DO |
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[6140] | 232 | DO jk = 1, jpk-2 !-- vertical advective flux |
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[2528] | 233 | DO jj = 2, jpjm1 |
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| 234 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 235 | z0w = SIGN( 0.5, pwn(ji,jj,jk+1) ) |
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| 236 | zalpha = 0.5 + z0w |
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[6140] | 237 | zw = z0w - 0.5 * pwn(ji,jj,jk+1) * p2dt * r1_e1e2t(ji,jj) / e3w_n(ji,jj,jk+1) |
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[4990] | 238 | zzwx = ptb(ji,jj,jk+1,jn) + xind(ji,jj,jk) * zw * zslpx(ji,jj,jk+1) |
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| 239 | zzwy = ptb(ji,jj,jk ,jn) + xind(ji,jj,jk) * zw * zslpx(ji,jj,jk ) |
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[5770] | 240 | zwx(ji,jj,jk+1) = pwn(ji,jj,jk+1) * ( zalpha * zzwx + (1.-zalpha) * zzwy ) * wmask(ji,jj,jk) |
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[2528] | 241 | END DO |
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[3] | 242 | END DO |
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| 243 | END DO |
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[6140] | 244 | IF( ln_linssh ) THEN ! top values, linear free surface only |
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| 245 | IF( ln_isfcav ) THEN ! ice-shelf cavities (top of the ocean) |
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[5770] | 246 | DO jj = 1, jpj |
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| 247 | DO ji = 1, jpi |
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| 248 | zwx(ji,jj, mikt(ji,jj) ) = pwn(ji,jj,mikt(ji,jj)) * ptb(ji,jj,mikt(ji,jj),jn) |
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| 249 | END DO |
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| 250 | END DO |
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[6140] | 251 | ELSE ! no cavities: only at the ocean surface |
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[5770] | 252 | zwx(:,:,1) = pwn(:,:,1) * ptb(:,:,1,jn) |
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| 253 | ENDIF |
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| 254 | ENDIF |
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| 255 | ! |
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[6140] | 256 | DO jk = 1, jpkm1 !-- vertical advective trend |
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[2528] | 257 | DO jj = 2, jpjm1 |
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[503] | 258 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[6140] | 259 | pta(ji,jj,jk,jn) = pta(ji,jj,jk,jn) - ( zwx(ji,jj,jk) - zwx(ji,jj,jk+1) ) * r1_e1e2t(ji,jj) / e3t_n(ji,jj,jk) |
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[503] | 260 | END DO |
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| 261 | END DO |
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| 262 | END DO |
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[6140] | 263 | ! ! send trends for diagnostic |
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[4990] | 264 | IF( ( cdtype == 'TRA' .AND. l_trdtra ) .OR. & |
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| 265 | &( cdtype == 'TRC' .AND. l_trdtrc ) ) & |
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| 266 | CALL trd_tra( kt, cdtype, jn, jptra_zad, zwx, pwn, ptb(:,:,:,jn) ) |
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[503] | 267 | ! |
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[6140] | 268 | END DO ! end of tracer loop |
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[503] | 269 | ! |
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[5770] | 270 | CALL wrk_dealloc( jpi,jpj,jpk, zslpx, zslpy, zwx, zwy ) |
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[2715] | 271 | ! |
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[5770] | 272 | IF( nn_timing == 1 ) CALL timing_stop('tra_adv_mus') |
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[3294] | 273 | ! |
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[5770] | 274 | END SUBROUTINE tra_adv_mus |
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[3] | 275 | |
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| 276 | !!====================================================================== |
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[5770] | 277 | END MODULE traadv_mus |
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