| 1 | MODULE ldfeiv |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE ldfeiv *** |
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| 4 | !! Ocean physics: variable eddy induced velocity coefficients |
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| 5 | !!====================================================================== |
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| 6 | #if defined key_traldf_eiv && defined key_traldf_c2d |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! 'key_traldf_eiv' and eddy induced velocity |
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| 9 | !! 'key_traldf_c2d' 2D tracer lateral mixing coef. |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! ldf_eiv : compute the eddy induced velocity coefficients |
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| 12 | !! Same results but not same routine if 'key_mpp_omp' |
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| 13 | !! is defined or not |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | !! * Modules used |
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| 16 | USE oce ! ocean dynamics and tracers |
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| 17 | USE dom_oce ! ocean space and time domain |
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| 18 | USE ldftra_oce ! ocean tracer lateral physics |
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| 19 | USE phycst ! physical constants |
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| 20 | USE ldfslp ! iso-neutral slopes |
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| 21 | USE flxrnf ! |
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| 22 | USE in_out_manager ! I/O manager |
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| 23 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 24 | USE prtctl ! Print control |
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| 25 | |
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| 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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| 29 | !! * Routine accessibility |
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| 30 | PUBLIC ldf_eiv ! routine called by step.F90 |
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| 31 | !!---------------------------------------------------------------------- |
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| 32 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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| 33 | !! $Header$ |
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| 34 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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| 35 | !!---------------------------------------------------------------------- |
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| 36 | !! * Substitutions |
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| 37 | # include "domzgr_substitute.h90" |
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| 38 | # include "vectopt_loop_substitute.h90" |
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| 39 | !!---------------------------------------------------------------------- |
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| 40 | |
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| 41 | CONTAINS |
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| 42 | |
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| 43 | # if defined key_mpp_omp |
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| 44 | !!---------------------------------------------------------------------- |
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| 45 | !! 'key_mpp_omp' : OpenMP / NEC autotasking (j-slab) |
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| 46 | !!---------------------------------------------------------------------- |
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| 47 | |
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| 48 | SUBROUTINE ldf_eiv( kt ) |
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| 49 | !!---------------------------------------------------------------------- |
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| 50 | !! *** ROUTINE ldf_eiv *** |
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| 51 | !! |
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| 52 | !! ** Purpose : Compute the eddy induced velocity coefficient from the |
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| 53 | !! growth rate of baroclinic instability. |
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| 54 | !! |
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| 55 | !! ** Method : |
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| 56 | !! |
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| 57 | !! ** Action : uslp(), : i- and j-slopes of neutral surfaces |
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| 58 | !! vslp() at u- and v-points, resp. |
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| 59 | !! wslpi(), : i- and j-slopes of neutral surfaces |
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| 60 | !! wslpj() at w-points. |
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| 61 | !! |
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| 62 | !! History : |
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| 63 | !! 8.1 ! 99-03 (G. Madec, A. Jouzeau) Original code |
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| 64 | !! 8.5 ! 02-06 (G. Madec) Free form, F90 |
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| 65 | !!---------------------------------------------------------------------- |
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| 66 | !! * Arguments |
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| 67 | INTEGER, INTENT( in ) :: kt ! ocean time-step inedx |
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| 68 | |
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| 69 | !! * Local declarations |
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| 70 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 71 | REAL(wp) :: & |
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| 72 | zfw, ze3w, zn2, zf20, & ! temporary scalars |
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| 73 | zaht, zaht_min |
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| 74 | REAL(wp), DIMENSION(jpi,jpj) :: & |
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| 75 | zn, zah, zhw, zross ! workspace |
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| 76 | !!---------------------------------------------------------------------- |
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| 77 | |
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| 78 | IF( kt == nit000 ) THEN |
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| 79 | IF(lwp) WRITE(numout,*) |
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| 80 | IF(lwp) WRITE(numout,*) 'ldf_eiv : eddy induced velocity coefficients' |
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| 81 | IF(lwp) WRITE(numout,*) '~~~~~~~ NEC autotasking / OpenMP : j-slab' |
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| 82 | ENDIF |
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| 83 | |
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| 84 | ! ! =============== |
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| 85 | DO jj = 2, jpjm1 ! Vertical slab |
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| 86 | ! ! =============== |
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| 87 | |
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| 88 | ! 0. Local initialization |
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| 89 | ! ----------------------- |
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| 90 | zn (:,jj) = 0.e0 |
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| 91 | zhw (:,jj) = 5.e0 |
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| 92 | zah (:,jj) = 0.e0 |
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| 93 | zross(:,jj) = 0.e0 |
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| 94 | |
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| 95 | ! 1. Compute lateral diffusive coefficient |
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| 96 | ! ---------------------------------------- |
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| 97 | |
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| 98 | !CDIR NOVERRCHK |
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| 99 | DO jk = 1, jpk |
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| 100 | !CDIR NOVERRCHK |
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| 101 | DO ji = 2, jpim1 |
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| 102 | ! Take the max of N^2 and zero then take the vertical sum |
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| 103 | ! of the square root of the resulting N^2 ( required to compute |
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| 104 | ! internal Rossby radius Ro = .5 * sum_jpk(N) / f |
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| 105 | zn2 = MAX( rn2(ji,jj,jk), 0.e0 ) |
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| 106 | ze3w = fse3w(ji,jj,jk) * tmask(ji,jj,jk) |
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| 107 | zn(ji,jj) = zn(ji,jj) + SQRT( zn2 ) * fse3w(ji,jj,jk) |
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| 108 | ! Compute elements required for the inverse time scale of baroclinic |
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| 109 | ! eddies using the isopycnal slopes calculated in ldfslp.F : |
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| 110 | ! T^-1 = sqrt(m_jpk(N^2*(r1^2+r2^2)*e3w)) |
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| 111 | zah(ji,jj) = zah(ji,jj) + zn2 & |
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| 112 | * ( wslpi(ji,jj,jk) * wslpi(ji,jj,jk) & |
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| 113 | + wslpj(ji,jj,jk) * wslpj(ji,jj,jk) ) & |
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| 114 | * ze3w |
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| 115 | zhw(ji,jj) = zhw(ji,jj) + ze3w |
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| 116 | END DO |
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| 117 | END DO |
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| 118 | |
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| 119 | !CDIR NOVERRCHK |
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| 120 | DO ji = 2, jpim1 |
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| 121 | zfw = MAX( ABS( 2. * omega * SIN( rad * gphit(ji,jj) ) ) , 1.e-10 ) |
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| 122 | ! Rossby radius at w-point taken < 40km and > 2km |
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| 123 | zross(ji,jj) = MAX( MIN( .4 * zn(ji,jj) / zfw, 40.e3 ), 2.e3 ) |
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| 124 | ! Compute aeiw by multiplying Ro^2 and T^-1 |
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| 125 | aeiw(ji,jj) = zross(ji,jj) * zross(ji,jj) * SQRT( zah(ji,jj) / zhw(ji,jj) ) * tmask(ji,jj,1) |
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| 126 | IF( cp_cfg == "orca" .AND. jp_cfg == 2 ) THEN ! ORCA R02 |
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| 127 | ! Take the minimum between aeiw and aeiv0 for depth levels |
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| 128 | ! lower than 20 (21 in w- point) |
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| 129 | IF( mbathy(ji,jj) <= 21. ) aeiw(ji,jj) = MIN( aeiw(ji,jj), 1000. ) |
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| 130 | ENDIF |
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| 131 | END DO |
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| 132 | |
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| 133 | ! Decrease the coefficient in the tropics (20N-20S) |
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| 134 | zf20 = 2. * omega * sin( rad * 20. ) |
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| 135 | DO ji = 2, jpim1 |
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| 136 | aeiw(ji,jj) = MIN( 1., ABS( ff(ji,jj) / zf20 ) ) * aeiw(ji,jj) |
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| 137 | END DO |
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| 138 | |
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| 139 | ! ORCA R05: Take the minimum between aeiw and aeiv0 |
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| 140 | IF( cp_cfg == "orca" .AND. jp_cfg == 05 ) THEN ! ORCA R05 |
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| 141 | DO ji = 2, jpim1 |
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| 142 | aeiw(ji,jj) = MIN( aeiw(ji,jj), aeiv0 ) |
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| 143 | END DO |
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| 144 | ENDIF |
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| 145 | ! ! =============== |
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| 146 | END DO ! End of slab |
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| 147 | ! ! =============== |
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| 148 | |
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| 149 | !,,,,,,,,,,,,,,,,,,,,,,,,,,,,,synchro,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, |
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| 150 | |
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| 151 | ! lateral boundary condition on aeiw |
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| 152 | CALL lbc_lnk( aeiw, 'W', 1. ) |
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| 153 | |
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| 154 | ! Average the diffusive coefficient at u- v- points |
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| 155 | DO jj = 2, jpjm1 |
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| 156 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 157 | aeiu(ji,jj) = .5 * (aeiw(ji,jj) + aeiw(ji+1,jj )) |
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| 158 | aeiv(ji,jj) = .5 * (aeiw(ji,jj) + aeiw(ji ,jj+1)) |
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| 159 | END DO |
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| 160 | END DO |
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| 161 | !,,,,,,,,,,,,,,,,,,,,,,,,,,,,,synchro,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, |
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| 162 | |
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| 163 | ! lateral boundary condition on aeiu, aeiv |
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| 164 | CALL lbc_lnk( aeiu, 'U', 1. ) |
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| 165 | CALL lbc_lnk( aeiv, 'V', 1. ) |
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| 166 | |
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| 167 | IF(ln_ctl) THEN |
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| 168 | CALL prt_ctl(tab2d_1=aeiu, clinfo1=' eiv - u: ', ovlap=1) |
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| 169 | CALL prt_ctl(tab2d_1=aeiv, clinfo1=' eiv - v: ', ovlap=1) |
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| 170 | ENDIF |
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| 171 | |
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| 172 | ! ORCA R05: add a space variation on aht (=aeiv except at the equator and river mouth) |
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| 173 | IF( cp_cfg == "orca" .AND. jp_cfg == 05 ) THEN |
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| 174 | zf20 = 2. * omega * SIN( rad * 20. ) |
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| 175 | zaht_min = 100. ! minimum value for aht |
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| 176 | DO jj = 1, jpj |
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| 177 | DO ji = 1, jpi |
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| 178 | zaht = ( 1. - MIN( 1., ABS( ff(ji,jj) / zf20 ) ) ) * ( aht0 - zaht_min ) & |
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| 179 | & + aht0 * upsrnfh(ji,jj) ! enhanced near river mouths |
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| 180 | ahtu(ji,jj) = MAX( MAX( zaht_min, aeiu(ji,jj) ) + zaht, aht0 ) |
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| 181 | ahtv(ji,jj) = MAX( MAX( zaht_min, aeiv(ji,jj) ) + zaht, aht0 ) |
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| 182 | ahtw(ji,jj) = MAX( MAX( zaht_min, aeiw(ji,jj) ) + zaht, aht0 ) |
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| 183 | END DO |
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| 184 | END DO |
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| 185 | IF(ln_ctl) THEN |
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| 186 | CALL prt_ctl(tab2d_1=ahtu, clinfo1=' aht - u: ', ovlap=1) |
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| 187 | CALL prt_ctl(tab2d_1=ahtv, clinfo1=' aht - v: ', ovlap=1) |
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| 188 | CALL prt_ctl(tab2d_1=ahtw, clinfo1=' aht - w: ', ovlap=1) |
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| 189 | ENDIF |
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| 190 | ENDIF |
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| 191 | |
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| 192 | IF( aeiv0 == 0.e0 ) THEN |
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| 193 | aeiu(:,:) = 0.e0 |
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| 194 | aeiv(:,:) = 0.e0 |
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| 195 | aeiw(:,:) = 0.e0 |
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| 196 | ENDIF |
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| 197 | |
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| 198 | END SUBROUTINE ldf_eiv |
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| 199 | |
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| 200 | # else |
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| 201 | !!---------------------------------------------------------------------- |
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| 202 | !! Default key k-j-i loops |
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| 203 | !!---------------------------------------------------------------------- |
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| 204 | |
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| 205 | SUBROUTINE ldf_eiv( kt ) |
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| 206 | !!---------------------------------------------------------------------- |
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| 207 | !! *** ROUTINE ldf_eiv *** |
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| 208 | !! |
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| 209 | !! ** Purpose : Compute the eddy induced velocity coefficient from the |
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| 210 | !! growth rate of baroclinic instability. |
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| 211 | !! |
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| 212 | !! ** Method : |
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| 213 | !! |
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| 214 | !! ** Action : - uslp(), : i- and j-slopes of neutral surfaces |
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| 215 | !! - vslp() at u- and v-points, resp. |
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| 216 | !! - wslpi(), : i- and j-slopes of neutral surfaces |
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| 217 | !! - wslpj() at w-points. |
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| 218 | !! |
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| 219 | !! History : |
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| 220 | !! 8.1 ! 99-03 (G. Madec, A. Jouzeau) Original code |
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| 221 | !! 8.5 ! 02-06 (G. Madec) Free form, F90 |
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| 222 | !!---------------------------------------------------------------------- |
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| 223 | !! * Arguments |
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| 224 | INTEGER, INTENT( in ) :: kt ! ocean time-step inedx |
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| 225 | |
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| 226 | !! * Local declarations |
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| 227 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 228 | REAL(wp) :: & |
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| 229 | zfw, ze3w, zn2, zf20, & ! temporary scalars |
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| 230 | zaht, zaht_min |
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| 231 | REAL(wp), DIMENSION(jpi,jpj) :: & |
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| 232 | zn, zah, zhw, zross ! workspace |
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| 233 | !!---------------------------------------------------------------------- |
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| 234 | |
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| 235 | IF( kt == nit000 ) THEN |
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| 236 | IF(lwp) WRITE(numout,*) |
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| 237 | IF(lwp) WRITE(numout,*) 'ldf_eiv : eddy induced velocity coefficients' |
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| 238 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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| 239 | ENDIF |
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| 240 | |
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| 241 | ! 0. Local initialization |
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| 242 | ! ----------------------- |
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| 243 | zn (:,:) = 0.e0 |
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| 244 | zhw (:,:) = 5.e0 |
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| 245 | zah (:,:) = 0.e0 |
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| 246 | zross(:,:) = 0.e0 |
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| 247 | |
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| 248 | |
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| 249 | ! 1. Compute lateral diffusive coefficient |
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| 250 | ! ---------------------------------------- |
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| 251 | |
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| 252 | DO jk = 1, jpk |
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| 253 | # if defined key_vectopt_loop && ! defined key_mpp_omp |
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| 254 | !CDIR NOVERRCHK |
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| 255 | DO ji = 1, jpij ! vector opt. |
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| 256 | ! Take the max of N^2 and zero then take the vertical sum |
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| 257 | ! of the square root of the resulting N^2 ( required to compute |
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| 258 | ! internal Rossby radius Ro = .5 * sum_jpk(N) / f |
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| 259 | zn2 = MAX( rn2(ji,1,jk), 0.e0 ) |
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| 260 | zn(ji,1) = zn(ji,1) + SQRT( zn2 ) * fse3w(ji,1,jk) |
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| 261 | ! Compute elements required for the inverse time scale of baroclinic |
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| 262 | ! eddies using the isopycnal slopes calculated in ldfslp.F : |
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| 263 | ! T^-1 = sqrt(m_jpk(N^2*(r1^2+r2^2)*e3w)) |
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| 264 | ze3w = fse3w(ji,1,jk) * tmask(ji,1,jk) |
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| 265 | zah(ji,1) = zah(ji,1) + zn2 & |
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| 266 | * ( wslpi(ji,1,jk) * wslpi(ji,1,jk) & |
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| 267 | + wslpj(ji,1,jk) * wslpj(ji,1,jk) ) & |
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| 268 | * ze3w |
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| 269 | zhw(ji,1) = zhw(ji,1) + ze3w |
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| 270 | END DO |
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| 271 | # else |
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| 272 | DO jj = 2, jpjm1 |
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| 273 | !CDIR NOVERRCHK |
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| 274 | DO ji = 2, jpim1 |
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| 275 | ! Take the max of N^2 and zero then take the vertical sum |
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| 276 | ! of the square root of the resulting N^2 ( required to compute |
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| 277 | ! internal Rossby radius Ro = .5 * sum_jpk(N) / f |
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| 278 | zn2 = MAX( rn2(ji,jj,jk), 0.e0 ) |
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| 279 | zn(ji,jj) = zn(ji,jj) + SQRT( zn2 ) * fse3w(ji,jj,jk) |
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| 280 | ! Compute elements required for the inverse time scale of baroclinic |
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| 281 | ! eddies using the isopycnal slopes calculated in ldfslp.F : |
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| 282 | ! T^-1 = sqrt(m_jpk(N^2*(r1^2+r2^2)*e3w)) |
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| 283 | ze3w = fse3w(ji,jj,jk) * tmask(ji,jj,jk) |
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| 284 | zah(ji,jj) = zah(ji,jj) + zn2 & |
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| 285 | * ( wslpi(ji,jj,jk) * wslpi(ji,jj,jk) & |
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| 286 | + wslpj(ji,jj,jk) * wslpj(ji,jj,jk) ) & |
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| 287 | * ze3w |
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| 288 | zhw(ji,jj) = zhw(ji,jj) + ze3w |
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| 289 | END DO |
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| 290 | END DO |
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| 291 | # endif |
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| 292 | END DO |
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| 293 | |
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| 294 | DO jj = 2, jpjm1 |
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| 295 | !CDIR NOVERRCHK |
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| 296 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 297 | zfw = MAX( ABS( 2. * omega * SIN( rad * gphit(ji,jj) ) ) , 1.e-10 ) |
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| 298 | ! Rossby radius at w-point taken < 40km and > 2km |
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| 299 | zross(ji,jj) = MAX( MIN( .4 * zn(ji,jj) / zfw, 40.e3 ), 2.e3 ) |
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| 300 | ! Compute aeiw by multiplying Ro^2 and T^-1 |
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| 301 | aeiw(ji,jj) = zross(ji,jj) * zross(ji,jj) * SQRT( zah(ji,jj) / zhw(ji,jj) ) * tmask(ji,jj,1) |
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| 302 | IF( cp_cfg == "orca" .AND. jp_cfg == 2 ) THEN ! ORCA R02 |
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| 303 | ! Take the minimum between aeiw and aeiv0 for depth levels |
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| 304 | ! lower than 20 (21 in w- point) |
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| 305 | IF( mbathy(ji,jj) <= 21. ) aeiw(ji,jj) = MIN( aeiw(ji,jj), 1000. ) |
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| 306 | ENDIF |
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| 307 | END DO |
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| 308 | END DO |
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| 309 | |
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| 310 | ! Decrease the coefficient in the tropics (20N-20S) |
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| 311 | zf20 = 2. * omega * sin( rad * 20. ) |
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| 312 | DO jj = 2, jpjm1 |
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| 313 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 314 | aeiw(ji,jj) = MIN( 1., ABS( ff(ji,jj) / zf20 ) ) * aeiw(ji,jj) |
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| 315 | END DO |
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| 316 | END DO |
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| 317 | |
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| 318 | ! ORCA R05: Take the minimum between aeiw and aeiv0 |
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| 319 | IF( cp_cfg == "orca" .AND. jp_cfg == 05 ) THEN |
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| 320 | DO jj = 2, jpjm1 |
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| 321 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 322 | aeiw(ji,jj) = MIN( aeiw(ji,jj), aeiv0 ) |
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| 323 | END DO |
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| 324 | END DO |
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| 325 | ENDIF |
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| 326 | |
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| 327 | ! lateral boundary condition on aeiw |
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| 328 | CALL lbc_lnk( aeiw, 'W', 1. ) |
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| 329 | |
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| 330 | ! Average the diffusive coefficient at u- v- points |
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| 331 | DO jj = 2, jpjm1 |
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| 332 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 333 | aeiu(ji,jj) = .5 * ( aeiw(ji,jj) + aeiw(ji+1,jj ) ) |
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| 334 | aeiv(ji,jj) = .5 * ( aeiw(ji,jj) + aeiw(ji ,jj+1) ) |
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| 335 | END DO |
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| 336 | END DO |
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| 337 | |
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| 338 | ! lateral boundary condition on aeiu, aeiv |
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| 339 | CALL lbc_lnk( aeiu, 'U', 1. ) |
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| 340 | CALL lbc_lnk( aeiv, 'V', 1. ) |
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| 341 | |
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| 342 | IF(ln_ctl) THEN |
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| 343 | CALL prt_ctl(tab2d_1=aeiu, clinfo1=' eiv - u: ', ovlap=1) |
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| 344 | CALL prt_ctl(tab2d_1=aeiv, clinfo1=' eiv - v: ', ovlap=1) |
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| 345 | ENDIF |
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| 346 | |
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| 347 | ! ORCA R05: add a space variation on aht (=aeiv except at the equator and river mouth) |
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| 348 | IF( cp_cfg == "orca" .AND. jp_cfg == 05 ) THEN |
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| 349 | zf20 = 2. * omega * SIN( rad * 20. ) |
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| 350 | zaht_min = 100. ! minimum value for aht |
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| 351 | DO jj = 1, jpj |
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| 352 | DO ji = 1, jpi |
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| 353 | zaht = ( 1. - MIN( 1., ABS( ff(ji,jj) / zf20 ) ) ) * ( aht0 - zaht_min ) & |
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| 354 | & + aht0 * upsrnfh(ji,jj) ! enhanced near river mouths |
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| 355 | ahtu(ji,jj) = MAX( MAX( zaht_min, aeiu(ji,jj) ) + zaht, aht0 ) |
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| 356 | ahtv(ji,jj) = MAX( MAX( zaht_min, aeiv(ji,jj) ) + zaht, aht0 ) |
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| 357 | ahtw(ji,jj) = MAX( MAX( zaht_min, aeiw(ji,jj) ) + zaht, aht0 ) |
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| 358 | END DO |
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| 359 | END DO |
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| 360 | IF(ln_ctl) THEN |
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| 361 | CALL prt_ctl(tab2d_1=ahtu, clinfo1=' aht - u: ', ovlap=1) |
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| 362 | CALL prt_ctl(tab2d_1=ahtv, clinfo1=' aht - v: ', ovlap=1) |
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| 363 | CALL prt_ctl(tab2d_1=ahtw, clinfo1=' aht - w: ', ovlap=1) |
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| 364 | ENDIF |
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| 365 | ENDIF |
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| 366 | |
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| 367 | IF( aeiv0 == 0.e0 ) THEN |
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| 368 | aeiu(:,:) = 0.e0 |
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| 369 | aeiv(:,:) = 0.e0 |
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| 370 | aeiw(:,:) = 0.e0 |
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| 371 | ENDIF |
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| 372 | |
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| 373 | END SUBROUTINE ldf_eiv |
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| 374 | |
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| 375 | # endif |
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| 376 | |
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| 377 | #else |
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| 378 | !!---------------------------------------------------------------------- |
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| 379 | !! Default option Dummy module |
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| 380 | !!---------------------------------------------------------------------- |
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| 381 | CONTAINS |
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| 382 | SUBROUTINE ldf_eiv( kt ) ! Empty routine |
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| 383 | WRITE(*,*) 'ldf_eiv: You should not have seen this print! error?', kt |
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| 384 | END SUBROUTINE ldf_eiv |
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| 385 | #endif |
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| 386 | |
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| 387 | !!====================================================================== |
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| 388 | END MODULE ldfeiv |
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