[186] | 1 | MODULE trcadv_tvd |
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| 2 | !!============================================================================== |
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| 3 | !! *** MODULE trcadv_tvd *** |
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| 4 | !! Ocean passive tracers: horizontal & vertical advective trend |
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| 5 | !!============================================================================== |
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| 6 | #if defined key_passivetrc |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! trc_adv_tvd : update the passive tracer trend with the horizontal |
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| 9 | !! and vertical advection trends using a TVD scheme |
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| 10 | !! nonosc : compute monotonic tracer fluxes by a nonoscillatory |
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| 11 | !! algorithm |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! * Modules used |
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[202] | 14 | USE oce_trc ! ocean dynamics and active tracers variables |
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| 15 | USE trc ! ocean passive tracers variables |
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| 16 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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[204] | 17 | USE trcbbl ! advective passive tracers in the BBL |
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[334] | 18 | USE prtctl_trc ! Print control for debbuging |
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[186] | 19 | |
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| 20 | IMPLICIT NONE |
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| 21 | PRIVATE |
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| 22 | |
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| 23 | !! * Accessibility |
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| 24 | PUBLIC trc_adv_tvd ! routine called by trcstp.F90 |
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| 25 | |
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| 26 | !! * Substitutions |
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| 27 | # include "passivetrc_substitute.h90" |
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| 28 | !!---------------------------------------------------------------------- |
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[349] | 29 | !! TOP 1.0 , LOCEAN-IPSL (2005) |
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[342] | 30 | !! $Header$ |
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| 31 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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[186] | 32 | !!---------------------------------------------------------------------- |
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| 33 | |
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| 34 | CONTAINS |
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| 35 | |
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| 36 | SUBROUTINE trc_adv_tvd( kt ) |
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| 37 | !!---------------------------------------------------------------------- |
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| 38 | !! *** ROUTINE trc_adv_tvd *** |
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| 39 | !! |
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| 40 | !! ** Purpose : Compute the now trend due to total advection of |
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| 41 | !! tracers and add it to the general trend of tracer equations |
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| 42 | !! |
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| 43 | !! ** Method : TVD scheme, i.e. 2nd order centered scheme with |
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| 44 | !! corrected flux (monotonic correction) |
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| 45 | !! note: - this advection scheme needs a leap-frog time scheme |
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| 46 | !! |
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| 47 | !! ** Action : - update tra with the now advective tracer trends |
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| 48 | !! - save the trends in trtrd ('key_trc_diatrd) |
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| 49 | !! |
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| 50 | !! History : |
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| 51 | !! ! 95-12 (L. Mortier) Original code |
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| 52 | !! ! 00-01 (H. Loukos) adapted to ORCA |
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| 53 | !! ! 00-10 (MA Foujols E.Kestenare) include file not routine |
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| 54 | !! ! 00-12 (E. Kestenare M. Levy) fix bug in trtrd indexes |
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| 55 | !! ! 01-07 (E. Durand G. Madec) adaptation to ORCA config |
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| 56 | !! 9.0 ! 02-06 (C. Ethe, G. Madec) F90: Free form and module |
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| 57 | !!---------------------------------------------------------------------- |
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| 58 | !! * Modules used |
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| 59 | #if defined key_trcbbl_adv |
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| 60 | USE oce_trc , zun => ua, & ! use ua as workspace |
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| 61 | & zvn => va ! use va as workspace |
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| 62 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zwn |
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| 63 | #else |
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| 64 | USE oce_trc , zun => un, & ! When no bbl, zun == un |
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| 65 | zvn => vn, & ! zvn == vn |
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| 66 | zwn => wn ! zwn == wn |
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| 67 | #endif |
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| 68 | !! * Arguments |
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| 69 | INTEGER, INTENT( in ) :: kt ! ocean time-step |
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| 70 | |
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| 71 | !! * Local declarations |
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| 72 | INTEGER :: ji, jj, jk,jn ! dummy loop indices |
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| 73 | REAL(wp) :: ztra ! temporary scalar |
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| 74 | |
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| 75 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: & |
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| 76 | zti, ztu, ztv, ztw ! temporary workspace |
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| 77 | |
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| 78 | REAL(wp) :: & |
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| 79 | z2dtt, zbtr, zeu, zev, zew, z2, & ! temporary scalar |
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| 80 | zfp_ui, zfp_vj, zfp_wk, & ! " " |
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| 81 | zfm_ui, zfm_vj, zfm_wk ! " " |
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[334] | 82 | |
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[433] | 83 | #if defined key_trc_diatrd |
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| 84 | REAL(wp) :: & |
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| 85 | zgm, zgz |
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| 86 | #endif |
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| 87 | |
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[334] | 88 | CHARACTER (len=22) :: charout |
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[186] | 89 | !!---------------------------------------------------------------------- |
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| 90 | |
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[404] | 91 | zti(:,:,:) = 0.e0 |
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| 92 | |
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[186] | 93 | IF( kt == nittrc000 .AND. lwp ) THEN |
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| 94 | WRITE(numout,*) |
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| 95 | WRITE(numout,*) 'trc_adv_tvd : TVD advection scheme' |
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| 96 | WRITE(numout,*) '~~~~~~~~~~~' |
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| 97 | ENDIF |
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| 98 | |
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| 99 | IF( neuler == 0 .AND. kt == nittrc000 ) THEN |
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| 100 | z2=1. |
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| 101 | ELSE |
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| 102 | z2=2. |
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| 103 | ENDIF |
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| 104 | |
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| 105 | #if defined key_trcbbl_adv |
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| 106 | ! Advective Bottom boundary layer: add the velocity |
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| 107 | ! ------------------------------------------------- |
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| 108 | zun(:,:,:) = un (:,:,:) - u_trc_bbl(:,:,:) |
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| 109 | zvn(:,:,:) = vn (:,:,:) - v_trc_bbl(:,:,:) |
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| 110 | zwn(:,:,:) = wn (:,:,:) + w_trc_bbl(:,:,:) |
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| 111 | #endif |
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| 112 | |
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| 113 | DO jn = 1, jptra |
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| 114 | |
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| 115 | ! 1. Bottom value : flux set to zero |
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| 116 | ! --------------- |
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| 117 | ztu(:,:,jpk) = 0.e0 |
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| 118 | ztv(:,:,jpk) = 0.e0 |
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| 119 | ztw(:,:,jpk) = 0.e0 |
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| 120 | zti(:,:,jpk) = 0.e0 |
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| 121 | |
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| 122 | |
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| 123 | ! 2. upstream advection with initial mass fluxes & intermediate update |
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| 124 | ! -------------------------------------------------------------------- |
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| 125 | ! upstream tracer flux in the i and j direction |
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| 126 | DO jk = 1, jpkm1 |
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| 127 | DO jj = 1, jpjm1 |
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| 128 | DO ji = 1, fs_jpim1 ! vector opt. |
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| 129 | zeu = 0.5 * e2u(ji,jj) * fse3u(ji,jj,jk) * zun(ji,jj,jk) |
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| 130 | zev = 0.5 * e1v(ji,jj) * fse3v(ji,jj,jk) * zvn(ji,jj,jk) |
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| 131 | ! upstream scheme |
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| 132 | zfp_ui = zeu + ABS( zeu ) |
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| 133 | zfm_ui = zeu - ABS( zeu ) |
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| 134 | zfp_vj = zev + ABS( zev ) |
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| 135 | zfm_vj = zev - ABS( zev ) |
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| 136 | ztu(ji,jj,jk) = zfp_ui * trb(ji,jj,jk,jn) + zfm_ui * trb(ji+1,jj ,jk,jn) |
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| 137 | ztv(ji,jj,jk) = zfp_vj * trb(ji,jj,jk,jn) + zfm_vj * trb(ji ,jj+1,jk,jn) |
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| 138 | END DO |
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| 139 | END DO |
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| 140 | END DO |
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| 141 | |
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| 142 | ! upstream tracer flux in the k direction |
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| 143 | ! Surface value |
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[361] | 144 | IF( lk_dynspg_rl ) THEN ! rigid lid : flux set to zero |
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| 145 | ztw(:,:,1) = 0.e0 |
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| 146 | ELSE ! free surface |
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[202] | 147 | DO jj = 1, jpj |
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| 148 | DO ji = 1, jpi |
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| 149 | zew = e1t(ji,jj) * e2t(ji,jj) * zwn(ji,jj,1) |
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| 150 | ztw(ji,jj,1) = zew * trb(ji,jj,1,jn) |
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| 151 | END DO |
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[186] | 152 | END DO |
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[202] | 153 | ENDIF |
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[186] | 154 | |
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| 155 | ! Interior value |
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| 156 | DO jk = 2, jpkm1 |
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| 157 | DO jj = 1, jpj |
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| 158 | DO ji = 1, jpi |
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| 159 | zew = 0.5 * e1t(ji,jj) * e2t(ji,jj) * zwn(ji,jj,jk) |
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| 160 | zfp_wk = zew + ABS( zew ) |
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| 161 | zfm_wk = zew - ABS( zew ) |
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| 162 | ztw(ji,jj,jk) = zfp_wk * trb(ji,jj,jk,jn) + zfm_wk * trb(ji,jj,jk-1,jn) |
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| 163 | END DO |
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| 164 | END DO |
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| 165 | END DO |
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| 166 | |
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| 167 | ! total advective trend |
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| 168 | DO jk = 1, jpkm1 |
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| 169 | DO jj = 2, jpjm1 |
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| 170 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 171 | zbtr = 1./ ( e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) ) |
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| 172 | zti(ji,jj,jk) = - ( ztu(ji,jj,jk) - ztu(ji-1,jj ,jk ) & |
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| 173 | & + ztv(ji,jj,jk) - ztv(ji ,jj-1,jk ) & |
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| 174 | & + ztw(ji,jj,jk) - ztw(ji ,jj ,jk+1) ) * zbtr |
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[433] | 175 | |
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| 176 | #if defined key_trc_diatrd |
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| 177 | IF ( luttrd(jn) ) & |
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| 178 | trtrd(ji,jj,jk,ikeep(jn),1) = trtrd(ji,jj,jk,ikeep(jn),1) - & |
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| 179 | & zbtr * ( ztu(ji,jj,jk) - ztu(ji-1,jj,jk) ) |
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| 180 | IF ( luttrd(jn) ) & |
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| 181 | trtrd(ji,jj,jk,ikeep(jn),2) = trtrd(ji,jj,jk,ikeep(jn),2) - & |
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| 182 | & zbtr * ( ztv(ji,jj,jk) - ztv(ji,jj-1,jk) ) |
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| 183 | IF ( luttrd(jn) ) & |
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| 184 | trtrd(ji,jj,jk,ikeep(jn),3) = trtrd(ji,jj,jk,ikeep(jn),3) - & |
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| 185 | & zbtr * ( ztw(ji,jj,jk) - ztw(ji,jj,jk+1) ) |
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| 186 | #endif |
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[186] | 187 | END DO |
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| 188 | END DO |
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| 189 | END DO |
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| 190 | |
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| 191 | |
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| 192 | ! update and guess with monotonic sheme |
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| 193 | DO jk = 1, jpkm1 |
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| 194 | z2dtt = z2 * rdttra(jk) * FLOAT(ndttrc) |
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| 195 | DO jj = 2, jpjm1 |
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| 196 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 197 | tra(ji,jj,jk,jn) = tra(ji,jj,jk,jn) + zti(ji,jj,jk) |
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| 198 | zti (ji,jj,jk) = ( trb(ji,jj,jk,jn) + z2dtt * zti(ji,jj,jk) ) * tmask(ji,jj,jk) |
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| 199 | END DO |
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| 200 | END DO |
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| 201 | END DO |
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| 202 | |
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| 203 | ! Lateral boundary conditions on zti, zsi (unchanged sign) |
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| 204 | CALL lbc_lnk( zti, 'T', 1. ) |
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| 205 | |
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| 206 | ! 3. antidiffusive flux : high order minus low order |
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| 207 | ! -------------------------------------------------- |
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| 208 | ! antidiffusive flux on i and j |
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| 209 | DO jk = 1, jpkm1 |
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| 210 | DO jj = 1, jpjm1 |
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| 211 | DO ji = 1, fs_jpim1 ! vector opt. |
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| 212 | zeu = 0.5 * e2u(ji,jj) * fse3u(ji,jj,jk) * zun(ji,jj,jk) |
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| 213 | zev = 0.5 * e1v(ji,jj) * fse3v(ji,jj,jk) * zvn(ji,jj,jk) |
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| 214 | ztu(ji,jj,jk) = zeu * ( trn(ji,jj,jk,jn) + trn(ji+1,jj,jk,jn) ) - ztu(ji,jj,jk) |
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| 215 | ztv(ji,jj,jk) = zev * ( trn(ji,jj,jk,jn) + trn(ji,jj+1,jk,jn) ) - ztv(ji,jj,jk) |
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| 216 | END DO |
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| 217 | END DO |
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| 218 | END DO |
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| 219 | |
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| 220 | ! antidiffusive flux on k |
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| 221 | ! Surface value |
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| 222 | ztw(:,:,1) = 0. |
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| 223 | |
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| 224 | ! Interior value |
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| 225 | DO jk = 2, jpkm1 |
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| 226 | DO jj = 1, jpj |
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| 227 | DO ji = 1, jpi |
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| 228 | zew = 0.5 * e1t(ji,jj) * e2t(ji,jj) * zwn(ji,jj,jk) |
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| 229 | ztw(ji,jj,jk) = zew * ( trn(ji,jj,jk,jn) + trn(ji,jj,jk-1,jn) ) - ztw(ji,jj,jk) |
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| 230 | END DO |
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| 231 | END DO |
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| 232 | END DO |
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| 233 | |
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| 234 | ! Lateral bondary conditions |
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| 235 | CALL lbc_lnk( ztu, 'U', -1. ) |
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| 236 | CALL lbc_lnk( ztv, 'V', -1. ) |
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| 237 | CALL lbc_lnk( ztw, 'W', 1. ) |
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| 238 | |
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| 239 | ! 4. monotonicity algorithm |
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| 240 | ! ------------------------- |
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[404] | 241 | CALL nonosc( trb(:,:,:,jn), ztu, ztv, ztw, zti, z2 ) |
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[186] | 242 | |
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| 243 | |
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| 244 | ! 5. final trend with corrected fluxes |
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| 245 | ! ------------------------------------ |
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| 246 | DO jk = 1, jpkm1 |
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| 247 | DO jj = 2, jpjm1 |
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| 248 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 249 | zbtr = 1. / ( e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) ) |
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[433] | 250 | #if defined key_trc_diatrd |
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| 251 | IF ( luttrd(jn) ) & |
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| 252 | trtrd(ji,jj,jk,ikeep(jn),1) = trtrd(ji,jj,jk,ikeep(jn),1) - & |
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| 253 | & zbtr * ( ztu(ji,jj,jk) - ztu(ji-1,jj,jk) ) |
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| 254 | IF ( luttrd(jn) ) & |
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| 255 | trtrd(ji,jj,jk,ikeep(jn),2) = trtrd(ji,jj,jk,ikeep(jn),2) - & |
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| 256 | & zbtr * ( ztv(ji,jj,jk) - ztv(ji,jj-1,jk) ) |
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| 257 | IF ( luttrd(jn) ) & |
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| 258 | trtrd(ji,jj,jk,ikeep(jn),3) = trtrd(ji,jj,jk,ikeep(jn),3) - & |
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| 259 | & zbtr * ( ztw(ji,jj,jk) - ztw(ji,jj,jk+1) ) |
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| 260 | #endif |
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[186] | 261 | tra(ji,jj,jk,jn) = tra(ji,jj,jk,jn) & |
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| 262 | & - ( ztu(ji,jj,jk) - ztu(ji-1,jj ,jk ) & |
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| 263 | & + ztv(ji,jj,jk) - ztv(ji ,jj-1,jk ) & |
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| 264 | & + ztw(ji,jj,jk) - ztw(ji ,jj ,jk+1) ) * zbtr |
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| 265 | END DO |
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| 266 | END DO |
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| 267 | END DO |
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[433] | 268 | ! 6.0 convert the transport trend into advection trend |
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| 269 | ! ---------------------------------------------------- |
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| 270 | |
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| 271 | #if defined key_trc_diatrd |
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| 272 | DO jk = 1,jpk |
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| 273 | DO jj = 2,jpjm1 |
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| 274 | DO ji = 2,jpim1 |
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| 275 | zbtr = 1. / ( e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) ) |
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| 276 | zgm = zbtr * trn(ji,jj,jk,jn) * & |
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| 277 | & ( zun(ji ,jj,jk) * e2u(ji ,jj) * fse3u(ji ,jj,jk) & |
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| 278 | & - zun(ji-1,jj,jk) * e2u(ji-1,jj) * fse3u(ji-1,jj,jk) ) |
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| 279 | |
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| 280 | zgz = zbtr * trn(ji,jj,jk,jn) * & |
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| 281 | & ( zvn(ji,jj ,jk) * e1v(ji,jj ) * fse3v(ji,jj ,jk) & |
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| 282 | & - zvn(ji,jj-1,jk) * e1v(ji,jj-1) * fse3v(ji,jj-1,jk) ) |
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| 283 | |
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| 284 | IF (luttrd(jn)) trtrd(ji,jj,jk,ikeep(jn),1) = trtrd(ji,jj,jk,ikeep(jn),1) + zgm |
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| 285 | IF (luttrd(jn)) trtrd(ji,jj,jk,ikeep(jn),2) = trtrd(ji,jj,jk,ikeep(jn),2) + zgz |
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| 286 | IF (luttrd(jn)) trtrd(ji,jj,jk,ikeep(jn),3) = trtrd(ji,jj,jk,ikeep(jn),3) & |
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| 287 | & - trn(ji,jj,jk,jn) * hdivn(ji,jj,jk) |
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| 288 | END DO |
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| 289 | END DO |
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| 290 | END DO |
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| 291 | |
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| 292 | ! Lateral boundary conditions on trtrd: |
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| 293 | |
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| 294 | IF (luttrd(jn)) CALL lbc_lnk( trtrd(:,:,:,ikeep(jn),1), 'T', 1. ) |
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| 295 | IF (luttrd(jn)) CALL lbc_lnk( trtrd(:,:,:,ikeep(jn),2), 'T', 1. ) |
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| 296 | IF (luttrd(jn)) CALL lbc_lnk( trtrd(:,:,:,ikeep(jn),3), 'T', 1. ) |
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| 297 | #endif |
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[186] | 298 | |
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| 299 | END DO |
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| 300 | |
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[334] | 301 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 302 | WRITE(charout, FMT="('tvd - adv')") |
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| 303 | CALL prt_ctl_trc_info(charout) |
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| 304 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm,clinfo2='trd') |
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| 305 | ENDIF |
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| 306 | |
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[186] | 307 | END SUBROUTINE trc_adv_tvd |
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| 308 | |
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| 309 | |
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| 310 | SUBROUTINE nonosc( pbef, paa, pbb, pcc, paft, prdt ) |
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| 311 | !!--------------------------------------------------------------------- |
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| 312 | !! *** ROUTINE nonosc *** |
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| 313 | !! |
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| 314 | !! ** Purpose : compute monotonic tracer fluxes from the upstream |
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| 315 | !! scheme and the before field by a nonoscillatory algorithm |
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| 316 | !! |
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| 317 | !! ** Method : ... ??? |
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| 318 | !! warning : pbef and paft must be masked, but the boundaries |
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| 319 | !! conditions on the fluxes are not necessary zalezak (1979) |
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| 320 | !! drange (1995) multi-dimensional forward-in-time and upstream- |
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| 321 | !! in-space based differencing for fluid |
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| 322 | !! |
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| 323 | !! History : |
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| 324 | !! ! 97-04 (L. Mortier) Original code |
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| 325 | !! ! 00-02 (H. Loukos) rewritting for opa8 |
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| 326 | !! ! 00-10 (M.A Foujols, E. Kestenare) lateral b.c. |
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| 327 | !! ! 01-03 (E. Kestenare) add key_passivetrc |
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| 328 | !! ! 01-07 (E. Durand G. Madec) adapted for T & S |
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| 329 | !! 8.5 ! 02-06 (G. Madec) F90: Free form and module |
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| 330 | !!---------------------------------------------------------------------- |
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| 331 | !! * Arguments |
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| 332 | REAL(wp), INTENT( in ) :: & |
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| 333 | prdt ! ??? |
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| 334 | REAL(wp), DIMENSION (jpi,jpj,jpk), INTENT( inout ) :: & |
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| 335 | pbef, & ! before field |
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| 336 | paft, & ! after field |
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| 337 | paa, & ! monotonic flux in the i direction |
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| 338 | pbb, & ! monotonic flux in the j direction |
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| 339 | pcc ! monotonic flux in the k direction |
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| 340 | |
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| 341 | !! * Local declarations |
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| 342 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 343 | INTEGER :: ikm1 |
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| 344 | REAL(wp), DIMENSION (jpi,jpj,jpk) :: zbetup, zbetdo |
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| 345 | REAL(wp) :: zpos, zneg, zbt, za, zb, zc, zbig, zrtrn, z2dtt |
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| 346 | !!---------------------------------------------------------------------- |
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| 347 | |
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| 348 | zbig = 1.e+40 |
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| 349 | zrtrn = 1.e-15 |
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[404] | 350 | zbetup(:,:,:) = 0.e0 ; zbetdo(:,:,:) = 0.e0 |
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[186] | 351 | |
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| 352 | ! Search local extrema |
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| 353 | ! -------------------- |
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| 354 | ! large negative value (-zbig) inside land |
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[334] | 355 | ! large negative value (-zbig) inside land |
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| 356 | pbef(:,:,:) = pbef(:,:,:) * tmask(:,:,:) - zbig * ( 1.e0 - tmask(:,:,:) ) |
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| 357 | paft(:,:,:) = paft(:,:,:) * tmask(:,:,:) - zbig * ( 1.e0 - tmask(:,:,:) ) |
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[186] | 358 | ! search maximum in neighbourhood |
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| 359 | DO jk = 1, jpkm1 |
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| 360 | ikm1 = MAX(jk-1,1) |
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| 361 | DO jj = 2, jpjm1 |
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| 362 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 363 | zbetup(ji,jj,jk) = MAX( pbef(ji ,jj ,jk ), paft(ji ,jj ,jk ), & |
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| 364 | & pbef(ji-1,jj ,jk ), pbef(ji+1,jj ,jk ), & |
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| 365 | & paft(ji-1,jj ,jk ), paft(ji+1,jj ,jk ), & |
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| 366 | & pbef(ji ,jj-1,jk ), pbef(ji ,jj+1,jk ), & |
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| 367 | & paft(ji ,jj-1,jk ), paft(ji ,jj+1,jk ), & |
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| 368 | & pbef(ji ,jj ,ikm1), pbef(ji ,jj ,jk+1), & |
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| 369 | & paft(ji ,jj ,ikm1), paft(ji ,jj ,jk+1) ) |
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| 370 | END DO |
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| 371 | END DO |
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| 372 | END DO |
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| 373 | ! large positive value (+zbig) inside land |
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[334] | 374 | pbef(:,:,:) = pbef(:,:,:) * tmask(:,:,:) + zbig * ( 1.e0 - tmask(:,:,:) ) |
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| 375 | paft(:,:,:) = paft(:,:,:) * tmask(:,:,:) + zbig * ( 1.e0 - tmask(:,:,:) ) |
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[186] | 376 | ! search minimum in neighbourhood |
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| 377 | DO jk = 1, jpkm1 |
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| 378 | ikm1 = MAX(jk-1,1) |
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| 379 | DO jj = 2, jpjm1 |
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| 380 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 381 | zbetdo(ji,jj,jk) = MIN( pbef(ji ,jj ,jk ), paft(ji ,jj ,jk ), & |
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| 382 | & pbef(ji-1,jj ,jk ), pbef(ji+1,jj ,jk ), & |
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| 383 | & paft(ji-1,jj ,jk ), paft(ji+1,jj ,jk ), & |
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| 384 | & pbef(ji ,jj-1,jk ), pbef(ji ,jj+1,jk ), & |
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| 385 | & paft(ji ,jj-1,jk ), paft(ji ,jj+1,jk ), & |
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| 386 | & pbef(ji ,jj ,ikm1), pbef(ji ,jj ,jk+1), & |
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| 387 | & paft(ji ,jj ,ikm1), paft(ji ,jj ,jk+1) ) |
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| 388 | END DO |
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| 389 | END DO |
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| 390 | END DO |
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| 391 | |
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| 392 | ! restore masked values to zero |
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| 393 | pbef(:,:,:) = pbef(:,:,:) * tmask(:,:,:) |
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| 394 | paft(:,:,:) = paft(:,:,:) * tmask(:,:,:) |
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| 395 | |
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| 396 | |
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| 397 | ! 2. Positive and negative part of fluxes and beta terms |
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| 398 | ! ------------------------------------------------------ |
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| 399 | |
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| 400 | DO jk = 1, jpkm1 |
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| 401 | z2dtt = prdt * rdttra(jk) * FLOAT(ndttrc) |
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| 402 | DO jj = 2, jpjm1 |
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| 403 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 404 | ! positive & negative part of the flux |
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| 405 | zpos = MAX( 0., paa(ji-1,jj ,jk ) ) - MIN( 0., paa(ji ,jj ,jk ) ) & |
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| 406 | & + MAX( 0., pbb(ji ,jj-1,jk ) ) - MIN( 0., pbb(ji ,jj ,jk ) ) & |
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| 407 | & + MAX( 0., pcc(ji ,jj ,jk+1) ) - MIN( 0., pcc(ji ,jj ,jk ) ) |
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| 408 | zneg = MAX( 0., paa(ji ,jj ,jk ) ) - MIN( 0., paa(ji-1,jj ,jk ) ) & |
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| 409 | & + MAX( 0., pbb(ji ,jj ,jk ) ) - MIN( 0., pbb(ji ,jj-1,jk ) ) & |
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| 410 | & + MAX( 0., pcc(ji ,jj ,jk ) ) - MIN( 0., pcc(ji ,jj ,jk+1) ) |
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| 411 | ! up & down beta terms |
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| 412 | zbt = e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) / z2dtt |
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| 413 | zbetup(ji,jj,jk) = ( zbetup(ji,jj,jk) - paft(ji,jj,jk) ) / (zpos+zrtrn) * zbt |
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| 414 | zbetdo(ji,jj,jk) = ( paft(ji,jj,jk) - zbetdo(ji,jj,jk) ) / (zneg+zrtrn) * zbt |
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| 415 | END DO |
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| 416 | END DO |
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| 417 | END DO |
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| 418 | |
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| 419 | ! lateral boundary condition on zbetup & zbetdo (unchanged sign) |
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| 420 | CALL lbc_lnk( zbetup, 'T', 1. ) |
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| 421 | CALL lbc_lnk( zbetdo, 'T', 1. ) |
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| 422 | |
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| 423 | |
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| 424 | ! 3. monotonic flux in the i direction, i.e. paa |
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| 425 | ! ---------------------------------------------- |
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| 426 | DO jk = 1, jpkm1 |
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| 427 | DO jj = 2, jpjm1 |
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| 428 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 429 | zc = paa(ji,jj,jk) |
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| 430 | IF( zc >= 0. ) THEN |
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| 431 | za = MIN( 1., zbetdo(ji,jj,jk), zbetup(ji+1,jj,jk) ) |
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| 432 | paa(ji,jj,jk) = za * zc |
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| 433 | ELSE |
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| 434 | zb = MIN( 1., zbetup(ji,jj,jk), zbetdo(ji+1,jj,jk) ) |
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| 435 | paa(ji,jj,jk) = zb * zc |
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| 436 | ENDIF |
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| 437 | END DO |
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| 438 | END DO |
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| 439 | END DO |
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| 440 | |
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| 441 | ! lateral boundary condition on paa (changed sign) |
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| 442 | CALL lbc_lnk( paa, 'U', -1. ) |
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| 443 | |
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| 444 | |
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| 445 | ! 4. monotonic flux in the j direction, i.e. pbb |
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| 446 | ! ---------------------------------------------- |
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| 447 | DO jk = 1, jpkm1 |
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| 448 | DO jj = 2, jpjm1 |
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| 449 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 450 | zc = pbb(ji,jj,jk) |
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| 451 | IF( zc >= 0. ) THEN |
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| 452 | za = MIN( 1., zbetdo(ji,jj,jk), zbetup(ji,jj+1,jk) ) |
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| 453 | pbb(ji,jj,jk) = za * zc |
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| 454 | ELSE |
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| 455 | zb = MIN( 1., zbetup(ji,jj,jk), zbetdo(ji,jj+1,jk) ) |
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| 456 | pbb(ji,jj,jk) = zb * zc |
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| 457 | ENDIF |
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| 458 | END DO |
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| 459 | END DO |
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| 460 | END DO |
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| 461 | |
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| 462 | ! lateral boundary condition on pbb (changed sign) |
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| 463 | CALL lbc_lnk( pbb, 'V', -1. ) |
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| 464 | |
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| 465 | |
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| 466 | ! monotonic flux in the k direction, i.e. pcc |
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| 467 | ! ------------------------------------------- |
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| 468 | DO jk = 2, jpkm1 |
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| 469 | DO jj = 2, jpjm1 |
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| 470 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 471 | zc = pcc(ji,jj,jk) |
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| 472 | IF( zc >= 0. ) THEN |
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| 473 | za = MIN( 1., zbetdo(ji,jj,jk), zbetup(ji,jj,jk-1) ) |
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| 474 | pcc(ji,jj,jk) = za * zc |
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| 475 | ELSE |
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| 476 | zb = MIN( 1., zbetup(ji,jj,jk), zbetdo(ji,jj,jk-1) ) |
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| 477 | pcc(ji,jj,jk) = zb * zc |
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| 478 | ENDIF |
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| 479 | END DO |
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| 480 | END DO |
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| 481 | END DO |
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| 482 | |
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| 483 | ! lateral boundary condition on pcc (unchanged sign) |
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| 484 | CALL lbc_lnk( pcc, 'W', 1. ) |
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| 485 | |
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| 486 | END SUBROUTINE nonosc |
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| 487 | |
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| 488 | #else |
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| 489 | !!---------------------------------------------------------------------- |
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| 490 | !! Default option Empty module |
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| 491 | !!---------------------------------------------------------------------- |
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| 492 | CONTAINS |
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| 493 | SUBROUTINE trc_adv_tvd( kt ) |
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| 494 | INTEGER, INTENT(in) :: kt |
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| 495 | WRITE(*,*) 'trc_adv_tvd: You should not have seen this print! error?', kt |
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| 496 | END SUBROUTINE trc_adv_tvd |
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| 497 | #endif |
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| 498 | |
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| 499 | !!====================================================================== |
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| 500 | END MODULE trcadv_tvd |
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