[3] | 1 | !!---------------------------------------------------------------------- |
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| 2 | !! *** ldfdyn_c2d.h90 *** |
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| 3 | !!---------------------------------------------------------------------- |
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| 4 | !! ldf_dyn_c2d : set the lateral viscosity coefficients |
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| 5 | !! ldf_dyn_c2d_orca : specific case for orca r2 and r4 |
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| 6 | !!---------------------------------------------------------------------- |
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| 7 | |
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| 8 | !!---------------------------------------------------------------------- |
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[2528] | 9 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[6486] | 10 | !! $Id$ |
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[2528] | 11 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 12 | !!---------------------------------------------------------------------- |
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| 13 | |
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| 14 | SUBROUTINE ldf_dyn_c2d( ld_print ) |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | !! *** ROUTINE ldf_dyn_c2d *** |
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| 17 | !! |
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| 18 | !! ** Purpose : initializations of the horizontal ocean physics |
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| 19 | !! |
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| 20 | !! ** Method : |
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| 21 | !! 2D eddy viscosity coefficients ( longitude, latitude ) |
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| 22 | !! |
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| 23 | !! harmonic operator : ahm1 is defined at t-point |
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| 24 | !! ahm2 is defined at f-point |
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| 25 | !! + isopycnal : ahm3 is defined at u-point |
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| 26 | !! or geopotential ahm4 is defined at v-point |
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| 27 | !! iso-model level : ahm3, ahm4 not used |
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| 28 | !! |
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[2528] | 29 | !! biharmonic operator : ahm3 is defined at u-point |
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| 30 | !! ahm4 is defined at v-point |
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| 31 | !! : ahm1, ahm2 not used |
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[3] | 32 | !! |
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| 33 | !!---------------------------------------------------------------------- |
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| 34 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
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[2715] | 35 | ! |
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| 36 | INTEGER :: ji, jj |
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[901] | 37 | REAL(wp) :: za00, zd_max, zetmax, zeumax, zefmax, zevmax |
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[3] | 38 | !!---------------------------------------------------------------------- |
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| 39 | |
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| 40 | IF(lwp) WRITE(numout,*) |
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| 41 | IF(lwp) WRITE(numout,*) 'ldf_dyn_c2d : 2d lateral eddy viscosity coefficient' |
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| 42 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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[10774] | 43 | IF(lwp .AND. lflush) CALL flush(numout) |
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[3] | 44 | |
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[118] | 45 | ! harmonic operator (ahm1, ahm2) : ( T- and F- points) (used for laplacian operators |
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| 46 | ! =============================== whatever its orientation is) |
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[3] | 47 | IF( ln_dynldf_lap ) THEN |
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| 48 | ! define ahm1 and ahm2 at the right grid point position |
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| 49 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
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| 50 | |
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[901] | 51 | zd_max = MAX( MAXVAL( e1t(:,:) ), MAXVAL( e2t(:,:) ) ) |
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| 52 | IF( lk_mpp ) CALL mpp_max( zd_max ) ! max over the global domain |
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[32] | 53 | |
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[3] | 54 | IF(lwp) WRITE(numout,*) ' laplacian operator: ahm proportional to e1' |
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[901] | 55 | IF(lwp) WRITE(numout,*) ' maximum grid-spacing = ', zd_max, ' maximum value for ahm = ', ahm0 |
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[3] | 56 | |
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[901] | 57 | za00 = ahm0 / zd_max |
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| 58 | DO jj = 1, jpj |
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| 59 | DO ji = 1, jpi |
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| 60 | zetmax = MAX( e1t(ji,jj), e2t(ji,jj) ) |
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| 61 | zefmax = MAX( e1f(ji,jj), e2f(ji,jj) ) |
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| 62 | ahm1(ji,jj) = za00 * zetmax |
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| 63 | ahm2(ji,jj) = za00 * zefmax |
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| 64 | END DO |
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| 65 | END DO |
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[3] | 66 | |
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| 67 | IF( ln_dynldf_iso ) THEN |
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| 68 | IF(lwp) WRITE(numout,*) ' Caution, as implemented now, the isopycnal part of momentum' |
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| 69 | IF(lwp) WRITE(numout,*) ' mixing use aht0 as eddy viscosity coefficient. Thus, it is' |
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| 70 | IF(lwp) WRITE(numout,*) ' uniform and you must be sure that your ahm is greater than' |
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| 71 | IF(lwp) WRITE(numout,*) ' aht0 everywhere in the model domain.' |
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| 72 | ENDIF |
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| 73 | |
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[2528] | 74 | ! Special case for ORCA R1, R2 and R4 configurations (overwrite the value of ahm1 ahm2) |
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[3] | 75 | ! ============================================== |
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| 76 | IF( cp_cfg == "orca" .AND. ( jp_cfg == 2 .OR. jp_cfg == 4 ) ) CALL ldf_dyn_c2d_orca( ld_print ) |
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[2528] | 77 | IF( cp_cfg == "orca" .AND. jp_cfg == 1) CALL ldf_dyn_c2d_orca_R1( ld_print ) |
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[3] | 78 | |
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| 79 | ! Control print |
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| 80 | IF( lwp .AND. ld_print ) THEN |
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| 81 | WRITE(numout,*) |
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| 82 | WRITE(numout,*) 'inildf: 2D ahm1 array' |
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| 83 | CALL prihre(ahm1,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 84 | WRITE(numout,*) |
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| 85 | WRITE(numout,*) 'inildf: 2D ahm2 array' |
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| 86 | CALL prihre(ahm2,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 87 | ENDIF |
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[10774] | 88 | IF(lwp .AND. lflush) CALL flush(numout) |
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[3] | 89 | ENDIF |
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| 90 | |
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[118] | 91 | ! biharmonic operator (ahm3, ahm4) : at U- and V-points (used for bilaplacian operator |
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| 92 | ! ================================= whatever its orientation is) |
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[3] | 93 | IF( ln_dynldf_bilap ) THEN |
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| 94 | ! (USER: modify ahm3 and ahm4 following your desiderata) |
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| 95 | ! Here: ahm is proportional to the cube of the maximum of the gridspacing |
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| 96 | ! in the to horizontal direction |
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| 97 | |
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[901] | 98 | zd_max = MAX( MAXVAL( e1u(:,:) ), MAXVAL( e2u(:,:) ) ) |
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| 99 | IF( lk_mpp ) CALL mpp_max( zd_max ) ! max over the global domain |
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[32] | 100 | |
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[3] | 101 | IF(lwp) WRITE(numout,*) ' bi-laplacian operator: ahm proportional to e1**3 ' |
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[901] | 102 | IF(lwp) WRITE(numout,*) ' maximum grid-spacing = ', zd_max, ' maximum value for ahm = ', ahm0 |
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[3] | 103 | |
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[2528] | 104 | za00 = ahm0_blp / ( zd_max * zd_max * zd_max ) |
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[901] | 105 | DO jj = 1, jpj |
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| 106 | DO ji = 1, jpi |
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| 107 | zeumax = MAX( e1u(ji,jj), e2u(ji,jj) ) |
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| 108 | zevmax = MAX( e1v(ji,jj), e2v(ji,jj) ) |
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| 109 | ahm3(ji,jj) = za00 * zeumax * zeumax * zeumax |
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| 110 | ahm4(ji,jj) = za00 * zevmax * zevmax * zevmax |
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| 111 | END DO |
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| 112 | END DO |
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[3] | 113 | |
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| 114 | ! Control print |
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| 115 | IF( lwp .AND. ld_print ) THEN |
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| 116 | WRITE(numout,*) |
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| 117 | WRITE(numout,*) 'inildf: ahm3 array' |
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| 118 | CALL prihre(ahm3,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 119 | WRITE(numout,*) |
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| 120 | WRITE(numout,*) 'inildf: ahm4 array' |
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| 121 | CALL prihre(ahm4,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 122 | ENDIF |
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[10774] | 123 | IF(lwp .AND. lflush) CALL flush(numout) |
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[3] | 124 | ENDIF |
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[2715] | 125 | ! |
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[3] | 126 | END SUBROUTINE ldf_dyn_c2d |
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| 127 | |
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| 128 | |
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| 129 | SUBROUTINE ldf_dyn_c2d_orca( ld_print ) |
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| 130 | !!---------------------------------------------------------------------- |
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| 131 | !! *** ROUTINE ldf_dyn_c2d *** |
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| 132 | !! |
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| 133 | !! **** W A R N I N G **** |
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| 134 | !! |
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| 135 | !! ORCA R2 and R4 configurations |
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| 136 | !! |
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| 137 | !! **** W A R N I N G **** |
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| 138 | !! |
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| 139 | !! ** Purpose : initializations of the lateral viscosity for orca R2 |
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| 140 | !! |
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| 141 | !! ** Method : blah blah blah... |
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| 142 | !! |
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| 143 | !!---------------------------------------------------------------------- |
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[2715] | 144 | USE ldftra_oce, ONLY: aht0 |
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[5396] | 145 | USE iom |
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[2715] | 146 | ! |
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[32] | 147 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
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[2715] | 148 | ! |
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| 149 | INTEGER :: ji, jj, jn ! dummy loop indices |
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| 150 | INTEGER :: inum, iim, ijm ! local integers |
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| 151 | INTEGER :: ifreq, il1, il2, ij, ii |
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[5040] | 152 | INTEGER :: ijpt0,ijpt1, ierror |
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[3] | 153 | REAL(wp) :: zahmeq, zcoft, zcoff, zmsk |
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| 154 | CHARACTER (len=15) :: clexp |
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[5040] | 155 | INTEGER, POINTER, DIMENSION(:,:) :: icof |
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[5396] | 156 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ztemp2d ! temporary array to read ahmcoef file |
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[3] | 157 | !!---------------------------------------------------------------------- |
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[3294] | 158 | ! |
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| 159 | CALL wrk_alloc( jpi , jpj , icof ) |
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| 160 | ! |
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[3] | 161 | IF(lwp) WRITE(numout,*) |
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| 162 | IF(lwp) WRITE(numout,*) 'inildf: 2d eddy viscosity coefficient' |
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| 163 | IF(lwp) WRITE(numout,*) '~~~~~~ --' |
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[2715] | 164 | IF(lwp) WRITE(numout,*) ' orca ocean configuration' |
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[10774] | 165 | IF(lwp .AND. lflush) CALL flush(numout) |
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[3] | 166 | |
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[4147] | 167 | IF( cp_cfg == "orca" .AND. cp_cfz == "antarctic" ) THEN |
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| 168 | ! |
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| 169 | ! 1.2 Modify ahm |
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| 170 | ! -------------- |
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| 171 | IF(lwp)WRITE(numout,*) ' inildf: Antarctic ocean' |
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| 172 | IF(lwp)WRITE(numout,*) ' no tropics, no reduction of ahm' |
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| 173 | IF(lwp)WRITE(numout,*) ' north boundary increase' |
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[3] | 174 | |
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[4147] | 175 | ahm1(:,:) = ahm0 |
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| 176 | ahm2(:,:) = ahm0 |
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| 177 | |
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| 178 | ijpt0=max(1,min(49 -njmpp+1,jpj)) |
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| 179 | ijpt1=max(0,min(49-njmpp+1,jpj-1)) |
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| 180 | DO jj=ijpt0,ijpt1 |
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| 181 | ahm2(:,jj)=ahm0*2. |
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| 182 | ahm1(:,jj)=ahm0*2. |
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| 183 | END DO |
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| 184 | ijpt0=max(1,min(48 -njmpp+1,jpj)) |
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| 185 | ijpt1=max(0,min(48-njmpp+1,jpj-1)) |
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| 186 | DO jj=ijpt0,ijpt1 |
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| 187 | ahm2(:,jj)=ahm0*1.9 |
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| 188 | ahm1(:,jj)=ahm0*1.75 |
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| 189 | END DO |
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| 190 | ijpt0=max(1,min(47 -njmpp+1,jpj)) |
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| 191 | ijpt1=max(0,min(47-njmpp+1,jpj-1)) |
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| 192 | DO jj=ijpt0,ijpt1 |
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| 193 | ahm2(:,jj)=ahm0*1.5 |
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| 194 | ahm1(:,jj)=ahm0*1.25 |
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| 195 | END DO |
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| 196 | ijpt0=max(1,min(46 -njmpp+1,jpj)) |
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| 197 | ijpt1=max(0,min(46-njmpp+1,jpj-1)) |
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| 198 | DO jj=ijpt0,ijpt1 |
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| 199 | ahm2(:,jj)=ahm0*1.1 |
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| 200 | END DO |
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| 201 | |
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| 202 | ELSE IF( cp_cfg == "orca" .AND. cp_cfz == "arctic" ) THEN |
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| 203 | ! 1.2 Modify ahm |
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| 204 | ! -------------- |
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| 205 | IF(lwp)WRITE(numout,*) ' inildf: Arctic ocean' |
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| 206 | IF(lwp)WRITE(numout,*) ' no tropics, no reduction of ahm' |
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| 207 | IF(lwp)WRITE(numout,*) ' south and west boundary increase' |
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| 208 | |
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| 209 | |
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| 210 | ahm1(:,:) = ahm0 |
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| 211 | ahm2(:,:) = ahm0 |
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| 212 | |
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| 213 | ijpt0=max(1,min(98-jpjzoom+1-njmpp+1,jpj)) |
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| 214 | ijpt1=max(0,min(98-jpjzoom+1-njmpp+1,jpj-1)) |
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| 215 | DO jj=ijpt0,ijpt1 |
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| 216 | ahm2(:,jj)=ahm0*2. |
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| 217 | ahm1(:,jj)=ahm0*2. |
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| 218 | END DO |
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| 219 | ijpt0=max(1,min(99-jpjzoom+1-njmpp+1,jpj)) |
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| 220 | ijpt1=max(0,min(99-jpjzoom+1-njmpp+1,jpj-1)) |
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| 221 | DO jj=ijpt0,ijpt1 |
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| 222 | ahm2(:,jj)=ahm0*1.9 |
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| 223 | ahm1(:,jj)=ahm0*1.75 |
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| 224 | END DO |
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| 225 | ijpt0=max(1,min(100-jpjzoom+1-njmpp+1,jpj)) |
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| 226 | ijpt1=max(0,min(100-jpjzoom+1-njmpp+1,jpj-1)) |
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| 227 | DO jj=ijpt0,ijpt1 |
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| 228 | ahm2(:,jj)=ahm0*1.5 |
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| 229 | ahm1(:,jj)=ahm0*1.25 |
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| 230 | END DO |
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| 231 | ijpt0=max(1,min(101-jpjzoom+1-njmpp+1,jpj)) |
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| 232 | ijpt1=max(0,min(101-jpjzoom+1-njmpp+1,jpj-1)) |
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| 233 | DO jj=ijpt0,ijpt1 |
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| 234 | ahm2(:,jj)=ahm0*1.1 |
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| 235 | END DO |
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| 236 | ELSE |
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| 237 | ! Read 2d integer array to specify western boundary increase in the |
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| 238 | ! ===================== equatorial strip (20N-20S) defined at t-points |
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[5040] | 239 | ! |
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[5396] | 240 | ALLOCATE( ztemp2d(jpi,jpj) ) |
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| 241 | ztemp2d(:,:) = 0. |
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| 242 | CALL iom_open ( 'ahmcoef.nc', inum ) |
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| 243 | CALL iom_get ( inum, jpdom_data, 'icof', ztemp2d) |
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| 244 | icof(:,:) = NINT(ztemp2d(:,:)) |
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| 245 | CALL iom_close( inum ) |
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| 246 | DEALLOCATE(ztemp2d) |
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[4147] | 247 | |
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| 248 | ! Set ahm1 and ahm2 ( T- and F- points) (used for laplacian operator) |
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| 249 | ! ================= |
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| 250 | ! define ahm1 and ahm2 at the right grid point position |
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| 251 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
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[3] | 252 | |
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[4147] | 253 | |
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| 254 | ! Decrease ahm to zahmeq m2/s in the tropics |
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| 255 | ! (from 90 to 20 degre: ahm = constant |
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| 256 | ! from 20 to 2.5 degre: ahm = decrease in (1-cos)/2 |
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| 257 | ! from 2.5 to 0 degre: ahm = constant |
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| 258 | ! symmetric in the south hemisphere) |
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| 259 | |
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| 260 | zahmeq = aht0 |
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| 261 | |
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| 262 | DO jj = 1, jpj |
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| 263 | DO ji = 1, jpi |
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| 264 | IF( ABS( gphif(ji,jj) ) >= 20. ) THEN |
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| 265 | ahm2(ji,jj) = ahm0 |
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| 266 | ELSEIF( ABS( gphif(ji,jj) ) <= 2.5 ) THEN |
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| 267 | ahm2(ji,jj) = zahmeq |
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| 268 | ELSE |
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| 269 | ahm2(ji,jj) = zahmeq + (ahm0-zahmeq)/2. & |
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| 270 | * ( 1. - COS( rad * ( ABS(gphif(ji,jj))-2.5 ) * 180. / 17.5 ) ) |
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| 271 | ENDIF |
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| 272 | IF( ABS( gphit(ji,jj) ) >= 20. ) THEN |
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| 273 | ahm1(ji,jj) = ahm0 |
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| 274 | ELSEIF( ABS( gphit(ji,jj) ) <= 2.5 ) THEN |
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| 275 | ahm1(ji,jj) = zahmeq |
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| 276 | ELSE |
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| 277 | ahm1(ji,jj) = zahmeq + (ahm0-zahmeq)/2. & |
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| 278 | * ( 1. - COS( rad * ( ABS(gphit(ji,jj))-2.5 ) * 180. / 17.5 ) ) |
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| 279 | ENDIF |
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| 280 | END DO |
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[3] | 281 | END DO |
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| 282 | |
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[4147] | 283 | ! increase along western boundaries of equatorial strip |
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| 284 | ! t-point |
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| 285 | DO jj = 1, jpjm1 |
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| 286 | DO ji = 1, jpim1 |
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| 287 | zcoft = FLOAT( icof(ji,jj) ) / 100. |
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| 288 | ahm1(ji,jj) = zcoft * ahm0 + (1.-zcoft) * ahm1(ji,jj) |
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| 289 | END DO |
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[3] | 290 | END DO |
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[4147] | 291 | ! f-point |
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| 292 | icof(:,:) = icof(:,:) * tmask(:,:,1) |
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| 293 | DO jj = 1, jpjm1 |
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| 294 | DO ji = 1, jpim1 ! NO vector opt. |
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| 295 | zmsk = tmask(ji,jj+1,1) + tmask(ji+1,jj+1,1) + tmask(ji,jj,1) + tmask(ji,jj+1,1) |
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| 296 | IF( zmsk == 0. ) THEN |
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| 297 | zcoff = 1. |
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| 298 | ELSE |
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| 299 | zcoff = FLOAT( icof(ji,jj+1) + icof(ji+1,jj+1) + icof(ji,jj) + icof(ji,jj+1) ) & |
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[3] | 300 | / (zmsk * 100.) |
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[4147] | 301 | ENDIF |
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| 302 | ahm2(ji,jj) = zcoff * ahm0 + (1.-zcoff) * ahm2(ji,jj) |
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| 303 | END DO |
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[3] | 304 | END DO |
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[4147] | 305 | ENDIF |
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[3] | 306 | |
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| 307 | ! Lateral boundary conditions on ( ahm1, ahm2 ) |
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| 308 | ! ============== |
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| 309 | CALL lbc_lnk( ahm1, 'T', 1. ) ! T-point, unchanged sign |
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| 310 | CALL lbc_lnk( ahm2, 'F', 1. ) ! F-point, unchanged sign |
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| 311 | |
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| 312 | ! Control print |
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| 313 | IF( lwp .AND. ld_print ) THEN |
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| 314 | WRITE(numout,*) |
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| 315 | WRITE(numout,*) 'inildf: 2D ahm1 array' |
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| 316 | CALL prihre(ahm1,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 317 | WRITE(numout,*) |
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| 318 | WRITE(numout,*) 'inildf: 2D ahm2 array' |
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| 319 | CALL prihre(ahm2,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 320 | ENDIF |
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[2715] | 321 | ! |
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[10774] | 322 | IF(lwp .AND. lflush) CALL flush(numout) |
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| 323 | ! |
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[3294] | 324 | CALL wrk_dealloc( jpi , jpj , icof ) |
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| 325 | ! |
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[3] | 326 | END SUBROUTINE ldf_dyn_c2d_orca |
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[2528] | 327 | |
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[2715] | 328 | |
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[2528] | 329 | SUBROUTINE ldf_dyn_c2d_orca_R1( ld_print ) |
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| 330 | !!---------------------------------------------------------------------- |
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| 331 | !! *** ROUTINE ldf_dyn_c2d *** |
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| 332 | !! |
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| 333 | !! **** W A R N I N G **** |
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| 334 | !! |
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| 335 | !! ORCA R1 configuration |
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| 336 | !! |
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| 337 | !! **** W A R N I N G **** |
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| 338 | !! |
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| 339 | !! ** Purpose : initializations of the lateral viscosity for orca R1 |
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| 340 | !! |
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| 341 | !! ** Method : blah blah blah... |
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| 342 | !! |
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| 343 | !!---------------------------------------------------------------------- |
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[2715] | 344 | USE ldftra_oce, ONLY: aht0 |
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[5400] | 345 | USE iom |
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[2715] | 346 | ! |
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[2528] | 347 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
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[2715] | 348 | ! |
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[2528] | 349 | INTEGER :: ji, jj, jn ! dummy loop indices |
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| 350 | INTEGER :: inum ! temporary logical unit |
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| 351 | INTEGER :: iim, ijm |
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| 352 | INTEGER :: ifreq, il1, il2, ij, ii |
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[5040] | 353 | INTEGER :: ijpt0,ijpt1, ierror |
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[2528] | 354 | REAL(wp) :: zahmeq, zcoft, zcoff, zmsk, zam20s |
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| 355 | CHARACTER (len=15) :: clexp |
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[5040] | 356 | INTEGER, POINTER, DIMENSION(:,:) :: icof |
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[5396] | 357 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ztemp2d ! temporary array to read ahmcoef file |
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[2528] | 358 | !!---------------------------------------------------------------------- |
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[3294] | 359 | ! |
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| 360 | CALL wrk_alloc( jpi , jpj , icof ) |
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| 361 | ! |
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[2528] | 362 | IF(lwp) WRITE(numout,*) |
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| 363 | IF(lwp) WRITE(numout,*) 'inildf: 2d eddy viscosity coefficient' |
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| 364 | IF(lwp) WRITE(numout,*) '~~~~~~ --' |
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[2715] | 365 | IF(lwp) WRITE(numout,*) ' orca_r1 configuration' |
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[10774] | 366 | IF(lwp .AND. lflush) CALL flush(numout) |
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[2528] | 367 | |
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[4147] | 368 | IF( cp_cfg == "orca" .AND. cp_cfz == "antarctic" ) THEN |
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| 369 | ! |
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| 370 | ! 1.2 Modify ahm |
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| 371 | ! -------------- |
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| 372 | IF(lwp)WRITE(numout,*) ' inildf: Antarctic ocean' |
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| 373 | IF(lwp)WRITE(numout,*) ' no tropics, no reduction of ahm' |
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| 374 | IF(lwp)WRITE(numout,*) ' north boundary increase' |
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[2528] | 375 | |
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[4147] | 376 | ahm1(:,:) = ahm0 |
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| 377 | ahm2(:,:) = ahm0 |
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| 378 | |
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| 379 | ijpt0=max(1,min(49 -njmpp+1,jpj)) |
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| 380 | ijpt1=max(0,min(49-njmpp+1,jpj-1)) |
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| 381 | DO jj=ijpt0,ijpt1 |
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| 382 | ahm2(:,jj)=ahm0*2. |
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| 383 | ahm1(:,jj)=ahm0*2. |
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| 384 | END DO |
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| 385 | ijpt0=max(1,min(48 -njmpp+1,jpj)) |
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| 386 | ijpt1=max(0,min(48-njmpp+1,jpj-1)) |
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| 387 | DO jj=ijpt0,ijpt1 |
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| 388 | ahm2(:,jj)=ahm0*1.9 |
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| 389 | ahm1(:,jj)=ahm0*1.75 |
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| 390 | END DO |
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| 391 | ijpt0=max(1,min(47 -njmpp+1,jpj)) |
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| 392 | ijpt1=max(0,min(47-njmpp+1,jpj-1)) |
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| 393 | DO jj=ijpt0,ijpt1 |
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| 394 | ahm2(:,jj)=ahm0*1.5 |
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| 395 | ahm1(:,jj)=ahm0*1.25 |
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| 396 | END DO |
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| 397 | ijpt0=max(1,min(46 -njmpp+1,jpj)) |
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| 398 | ijpt1=max(0,min(46-njmpp+1,jpj-1)) |
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| 399 | DO jj=ijpt0,ijpt1 |
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| 400 | ahm2(:,jj)=ahm0*1.1 |
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| 401 | END DO |
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| 402 | |
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| 403 | ELSE IF( cp_cfg == "orca" .AND. cp_cfz == "arctic" ) THEN |
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| 404 | ! 1.2 Modify ahm |
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| 405 | ! -------------- |
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| 406 | IF(lwp)WRITE(numout,*) ' inildf: Arctic ocean' |
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| 407 | IF(lwp)WRITE(numout,*) ' no tropics, no reduction of ahm' |
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| 408 | IF(lwp)WRITE(numout,*) ' south and west boundary increase' |
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| 409 | |
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| 410 | |
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| 411 | ahm1(:,:) = ahm0 |
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| 412 | ahm2(:,:) = ahm0 |
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| 413 | |
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| 414 | ijpt0=max(1,min(98-jpjzoom+1-njmpp+1,jpj)) |
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| 415 | ijpt1=max(0,min(98-jpjzoom+1-njmpp+1,jpj-1)) |
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| 416 | DO jj=ijpt0,ijpt1 |
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| 417 | ahm2(:,jj)=ahm0*2. |
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| 418 | ahm1(:,jj)=ahm0*2. |
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| 419 | END DO |
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| 420 | ijpt0=max(1,min(99-jpjzoom+1-njmpp+1,jpj)) |
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| 421 | ijpt1=max(0,min(99-jpjzoom+1-njmpp+1,jpj-1)) |
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| 422 | DO jj=ijpt0,ijpt1 |
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| 423 | ahm2(:,jj)=ahm0*1.9 |
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| 424 | ahm1(:,jj)=ahm0*1.75 |
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| 425 | END DO |
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| 426 | ijpt0=max(1,min(100-jpjzoom+1-njmpp+1,jpj)) |
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| 427 | ijpt1=max(0,min(100-jpjzoom+1-njmpp+1,jpj-1)) |
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| 428 | DO jj=ijpt0,ijpt1 |
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| 429 | ahm2(:,jj)=ahm0*1.5 |
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| 430 | ahm1(:,jj)=ahm0*1.25 |
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| 431 | END DO |
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| 432 | ijpt0=max(1,min(101-jpjzoom+1-njmpp+1,jpj)) |
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| 433 | ijpt1=max(0,min(101-jpjzoom+1-njmpp+1,jpj-1)) |
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| 434 | DO jj=ijpt0,ijpt1 |
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| 435 | ahm2(:,jj)=ahm0*1.1 |
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| 436 | END DO |
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| 437 | ELSE |
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| 438 | |
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| 439 | ! Read 2d integer array to specify western boundary increase in the |
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| 440 | ! ===================== equatorial strip (20N-20S) defined at t-points |
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[5396] | 441 | ALLOCATE( ztemp2d(jpi,jpj) ) |
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| 442 | ztemp2d(:,:) = 0. |
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| 443 | CALL iom_open ( 'ahmcoef.nc', inum ) |
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| 444 | CALL iom_get ( inum, jpdom_data, 'icof', ztemp2d) |
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| 445 | icof(:,:) = NINT(ztemp2d(:,:)) |
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| 446 | CALL iom_close( inum ) |
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| 447 | DEALLOCATE(ztemp2d) |
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[4147] | 448 | |
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| 449 | ! Set ahm1 and ahm2 ( T- and F- points) (used for laplacian operator) |
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| 450 | ! ================= |
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| 451 | ! define ahm1 and ahm2 at the right grid point position |
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| 452 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
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[2528] | 453 | |
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[4147] | 454 | |
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| 455 | ! Decrease ahm to zahmeq m2/s in the tropics |
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| 456 | ! (from 90 to 20 degrees: ahm = scaled by local metrics |
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| 457 | ! from 20 to 2.5 degrees: ahm = decrease in (1-cos)/2 |
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| 458 | ! from 2.5 to 0 degrees: ahm = constant |
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| 459 | ! symmetric in the south hemisphere) |
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| 460 | |
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| 461 | zahmeq = aht0 |
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| 462 | zam20s = ahm0*COS( rad * 20. ) |
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| 463 | |
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| 464 | DO jj = 1, jpj |
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| 465 | DO ji = 1, jpi |
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| 466 | IF( ABS( gphif(ji,jj) ) >= 20. ) THEN |
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| 467 | ! leave as set in ldf_dyn_c2d |
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| 468 | ELSEIF( ABS( gphif(ji,jj) ) <= 2.5 ) THEN |
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| 469 | ahm2(ji,jj) = zahmeq |
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| 470 | ELSE |
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| 471 | ahm2(ji,jj) = zahmeq + (zam20s-zahmeq)/2. & |
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| 472 | * ( 1. - COS( rad * ( ABS(gphif(ji,jj))-2.5 ) * 180. / 17.5 ) ) |
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| 473 | ENDIF |
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| 474 | IF( ABS( gphit(ji,jj) ) >= 20. ) THEN |
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| 475 | ! leave as set in ldf_dyn_c2d |
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| 476 | ELSEIF( ABS( gphit(ji,jj) ) <= 2.5 ) THEN |
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| 477 | ahm1(ji,jj) = zahmeq |
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| 478 | ELSE |
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| 479 | ahm1(ji,jj) = zahmeq + (zam20s-zahmeq)/2. & |
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| 480 | * ( 1. - COS( rad * ( ABS(gphit(ji,jj))-2.5 ) * 180. / 17.5 ) ) |
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| 481 | ENDIF |
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| 482 | END DO |
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[2528] | 483 | END DO |
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| 484 | |
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[4147] | 485 | ! increase along western boundaries of equatorial strip |
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| 486 | ! t-point |
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| 487 | DO jj = 1, jpjm1 |
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| 488 | DO ji = 1, jpim1 |
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| 489 | IF( ABS( gphit(ji,jj) ) < 20. ) THEN |
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| 490 | zcoft = FLOAT( icof(ji,jj) ) / 100. |
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| 491 | ahm1(ji,jj) = zcoft * ahm0 + (1.-zcoft) * ahm1(ji,jj) |
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| 492 | ENDIF |
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| 493 | END DO |
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[2528] | 494 | END DO |
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[4147] | 495 | ! f-point |
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| 496 | icof(:,:) = icof(:,:) * tmask(:,:,1) |
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| 497 | DO jj = 1, jpjm1 |
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| 498 | DO ji = 1, jpim1 |
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| 499 | IF( ABS( gphif(ji,jj) ) < 20. ) THEN |
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| 500 | zmsk = tmask(ji,jj+1,1) + tmask(ji+1,jj+1,1) + tmask(ji,jj,1) + tmask(ji,jj+1,1) |
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| 501 | IF( zmsk == 0. ) THEN |
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| 502 | zcoff = 1. |
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| 503 | ELSE |
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| 504 | zcoff = FLOAT( icof(ji,jj+1) + icof(ji+1,jj+1) + icof(ji,jj) + icof(ji,jj+1) ) & |
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| 505 | / (zmsk * 100.) |
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| 506 | ENDIF |
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| 507 | ahm2(ji,jj) = zcoff * ahm0 + (1.-zcoff) * ahm2(ji,jj) |
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| 508 | ENDIF |
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| 509 | END DO |
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[2528] | 510 | END DO |
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[4147] | 511 | ENDIF |
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[2528] | 512 | |
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| 513 | ! Lateral boundary conditions on ( ahm1, ahm2 ) |
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| 514 | ! ============== |
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| 515 | CALL lbc_lnk( ahm1, 'T', 1. ) ! T-point, unchanged sign |
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| 516 | CALL lbc_lnk( ahm2, 'F', 1. ) ! F-point, unchanged sign |
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| 517 | |
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| 518 | ! Control print |
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| 519 | IF( lwp .AND. ld_print ) THEN |
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| 520 | WRITE(numout,*) |
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| 521 | WRITE(numout,*) 'inildf: 2D ahm1 array' |
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| 522 | CALL prihre(ahm1,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 523 | WRITE(numout,*) |
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| 524 | WRITE(numout,*) 'inildf: 2D ahm2 array' |
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| 525 | CALL prihre(ahm2,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 526 | ENDIF |
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[2715] | 527 | ! |
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[10774] | 528 | IF(lwp .AND. lflush) CALL flush(numout) |
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| 529 | ! |
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[3294] | 530 | CALL wrk_dealloc( jpi , jpj , icof ) |
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| 531 | ! |
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[2528] | 532 | END SUBROUTINE ldf_dyn_c2d_orca_R1 |
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