[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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| 9 | !! OPA 9.0 , LODYC-IPSL (2003) |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | |
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| 12 | SUBROUTINE ldf_dyn_c2d( ld_print ) |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! *** ROUTINE ldf_dyn_c2d *** |
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| 15 | !! |
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| 16 | !! ** Purpose : initializations of the horizontal ocean physics |
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| 17 | !! |
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| 18 | !! ** Method : |
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| 19 | !! **** W A R N I N G **** |
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| 20 | !! ORCA OCEAN VERSION |
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| 21 | !! This method is relevant ONLY for the grid build by the method |
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| 22 | !! given in the 'Reference' section. |
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| 23 | !! **** W A R N I N G **** |
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| 24 | !! |
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| 25 | !! 2D eddy viscosity coefficients ( longitude, latitude ) |
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| 26 | !! |
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| 27 | !! harmonic operator : ahm1 is defined at t-point |
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| 28 | !! ahm2 is defined at f-point |
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| 29 | !! + isopycnal : ahm3 is defined at u-point |
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| 30 | !! or geopotential ahm4 is defined at v-point |
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| 31 | !! iso-model level : ahm3, ahm4 not used |
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| 32 | !! |
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| 33 | !! biharmonic operator : ahm1 is defined at u-point |
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| 34 | !! ahm2 is defined at v-point |
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| 35 | !! : ahm3, ahm4 not used |
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| 36 | !! |
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| 37 | !!---------------------------------------------------------------------- |
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| 38 | !! * Arguments |
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| 39 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
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| 40 | |
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| 41 | !! * Local variables |
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| 42 | REAL(wp) :: za00, zdx_max |
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| 43 | !!---------------------------------------------------------------------- |
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| 44 | |
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| 45 | IF(lwp) WRITE(numout,*) |
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| 46 | IF(lwp) WRITE(numout,*) 'ldf_dyn_c2d : 2d lateral eddy viscosity coefficient' |
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| 47 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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| 48 | IF(lwp) WRITE(numout,*) |
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| 49 | |
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| 50 | ! Set ahm1 and ahm2 ( T- and F- points) (used for laplacian operators |
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| 51 | ! ================= whatever its orientation is) |
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| 52 | IF( ln_dynldf_lap ) THEN |
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| 53 | ! define ahm1 and ahm2 at the right grid point position |
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| 54 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
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| 55 | |
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| 56 | zdx_max = MAXVAL( e1t(:,:) ) |
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| 57 | #if defined key_mpp |
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| 58 | CALL mpp_max( zdx_max ) |
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| 59 | #endif |
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| 60 | IF(lwp) WRITE(numout,*) ' laplacian operator: ahm proportional to e1' |
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| 61 | IF(lwp) WRITE(numout,*) ' Caution, here we assume your mesh is isotropic ...' |
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| 62 | IF(lwp) WRITE(numout,*) ' maximum grid-spacing = ', zdx_max, ' maximum value for ahm = ', ahm0 |
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| 63 | |
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| 64 | za00 = ahm0 / zdx_max |
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| 65 | ahm1(:,:) = za00 * e1t(:,:) |
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| 66 | ahm2(:,:) = za00 * e1f(:,:) |
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| 67 | |
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| 68 | IF( ln_dynldf_iso ) THEN |
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| 69 | IF(lwp) WRITE(numout,*) ' Caution, as implemented now, the isopycnal part of momentum' |
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| 70 | IF(lwp) WRITE(numout,*) ' mixing use aht0 as eddy viscosity coefficient. Thus, it is' |
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| 71 | IF(lwp) WRITE(numout,*) ' uniform and you must be sure that your ahm is greater than' |
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| 72 | IF(lwp) WRITE(numout,*) ' aht0 everywhere in the model domain.' |
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| 73 | ENDIF |
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| 74 | |
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| 75 | ! Special case for ORCA R2 and R4 configurations (overwrite the value of ahm1 ahm2) |
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| 76 | ! ============================================== |
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| 77 | IF( cp_cfg == "orca" .AND. ( jp_cfg == 2 .OR. jp_cfg == 4 ) ) CALL ldf_dyn_c2d_orca( ld_print ) |
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| 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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| 88 | ENDIF |
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| 89 | |
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| 90 | ! ahm3 and ahm4 at U- and V-points (used for bilaplacian operator |
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| 91 | ! ================================ whatever its orientation is) |
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| 92 | IF( ln_dynldf_bilap ) THEN |
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| 93 | ! (USER: modify ahm3 and ahm4 following your desiderata) |
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| 94 | ! Here: ahm is proportional to the cube of the maximum of the gridspacing |
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| 95 | ! in the to horizontal direction |
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| 96 | |
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| 97 | zdx_max = MAXVAL( e1u(:,:) ) |
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| 98 | #if defined key_mpp |
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| 99 | CALL mpp_max( zdx_max ) |
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| 100 | #endif |
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| 101 | IF(lwp) WRITE(numout,*) ' bi-laplacian operator: ahm proportional to e1**3 ' |
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| 102 | IF(lwp) WRITE(numout,*) ' Caution, here we assume your mesh is isotropic ...' |
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| 103 | IF(lwp) WRITE(numout,*) ' maximum grid-spacing = ', zdx_max, ' maximum value for ahm = ', ahm0 |
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| 104 | |
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| 105 | za00 = ahm0 / ( zdx_max * zdx_max * zdx_max ) |
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| 106 | ahm3(:,:) = za00 * e1u(:,:) * e1u(:,:) * e1u(:,:) |
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| 107 | ahm4(:,:) = za00 * e1v(:,:) * e1v(:,:) * e1v(:,:) |
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| 108 | |
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| 109 | ! Control print |
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| 110 | IF( lwp .AND. ld_print ) THEN |
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| 111 | WRITE(numout,*) |
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| 112 | WRITE(numout,*) 'inildf: ahm3 array' |
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| 113 | CALL prihre(ahm3,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 114 | WRITE(numout,*) |
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| 115 | WRITE(numout,*) 'inildf: ahm4 array' |
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| 116 | CALL prihre(ahm4,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 117 | ENDIF |
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| 118 | ENDIF |
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| 119 | |
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| 120 | |
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| 121 | END SUBROUTINE ldf_dyn_c2d |
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| 122 | |
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| 123 | |
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| 124 | SUBROUTINE ldf_dyn_c2d_orca( ld_print ) |
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| 125 | !!---------------------------------------------------------------------- |
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| 126 | !! *** ROUTINE ldf_dyn_c2d *** |
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| 127 | !! |
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| 128 | !! **** W A R N I N G **** |
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| 129 | !! |
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| 130 | !! ORCA R2 and R4 configurations |
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| 131 | !! |
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| 132 | !! **** W A R N I N G **** |
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| 133 | !! |
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| 134 | !! ** Purpose : initializations of the lateral viscosity for orca R2 |
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| 135 | !! |
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| 136 | !! ** Method : blah blah blah... |
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| 137 | !! |
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| 138 | !!---------------------------------------------------------------------- |
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| 139 | !! * Modules used |
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| 140 | USE ldftra_oce, ONLY : aht0 |
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| 141 | |
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| 142 | !! * Arguments |
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| 143 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
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| 144 | |
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| 145 | !! * Local variables |
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| 146 | INTEGER :: ji, jj ! dummy loop indices |
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| 147 | INTEGER :: inumcf, iost, iim, ijm |
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| 148 | INTEGER :: jn |
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| 149 | INTEGER :: ifreq, il1, il2, ij, ii, inorth, isouth |
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| 150 | INTEGER :: ipi, ipj, iumout, iwork, icompt, ibtest, ikmax |
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| 151 | INTEGER :: ijpt0, ijpt1, iipt0, iipt1 |
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| 152 | INTEGER ,DIMENSION(jpidta,jpidta) :: idata |
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| 153 | INTEGER ,DIMENSION(jpi ,jpj ) :: icof |
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| 154 | |
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| 155 | REAL(wp) :: zahmeq, zcoft, zcoff, zmsk |
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| 156 | |
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| 157 | CHARACTER (len=15) :: clexp |
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| 158 | !!---------------------------------------------------------------------- |
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| 159 | |
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| 160 | IF(lwp) WRITE(numout,*) |
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| 161 | IF(lwp) WRITE(numout,*) 'inildf: 2d eddy viscosity coefficient' |
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| 162 | IF(lwp) WRITE(numout,*) '~~~~~~ --' |
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| 163 | IF(lwp) WRITE(numout,*) |
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| 164 | IF(lwp) WRITE(numout,*) ' orca ocean model' |
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| 165 | IF(lwp) WRITE(numout,*) |
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| 166 | |
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| 167 | #if defined key_antarctic |
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| 168 | # include "ldfdyn_antarctic.h90" |
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| 169 | #elif defined key_arctic |
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| 170 | # include "ldfdyn_arctic.h90" |
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| 171 | #else |
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| 172 | ! Read 2d integer array to specify western boundary increase in the |
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| 173 | ! ===================== equatorial strip (20N-20S) defined at t-points |
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| 174 | |
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| 175 | inumcf = 15 |
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| 176 | OPEN( UNIT=inumcf,FILE='ahmcoef',STATUS='OLD', & |
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| 177 | FORM='FORMATTED', ACCESS='SEQUENTIAL', ERR=111 , & |
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| 178 | IOSTAT= iost) |
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| 179 | IF( iost == 0 ) THEN |
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| 180 | IF(lwp) WRITE(numout,*) ' file : ahmcoef open ok' |
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| 181 | IF(lwp) WRITE(numout,*) ' unit = ', inumcf |
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| 182 | IF(lwp) WRITE(numout,*) ' status = OLD' |
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| 183 | IF(lwp) WRITE(numout,*) ' form = FORMATTED' |
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| 184 | IF(lwp) WRITE(numout,*) ' access = SEQUENTIAL' |
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| 185 | IF(lwp) WRITE(numout,*) |
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| 186 | ENDIF |
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| 187 | 111 CONTINUE |
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| 188 | IF( iost /= 0 ) THEN |
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| 189 | IF(lwp) WRITE(numout,*) |
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| 190 | IF(lwp) WRITE(numout,*) ' ===>>>> : bad opening file: ahmcoef' |
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| 191 | IF(lwp) WRITE(numout,*) ' ======= === ' |
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| 192 | IF(lwp) WRITE(numout,*) ' we stop. verify the file ' |
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| 193 | IF(lwp) WRITE(numout,*) |
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| 194 | STOP 'ldfdyn_c2d.h90' |
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| 195 | ENDIF |
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| 196 | |
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| 197 | REWIND inumcf |
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| 198 | READ(inumcf,9101) clexp, iim, ijm |
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| 199 | READ(inumcf,'(/)') |
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| 200 | ifreq = 40 |
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| 201 | il1 = 1 |
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| 202 | DO jn = 1, jpidta/ifreq+1 |
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| 203 | READ(inumcf,'(/)') |
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| 204 | il2 = MIN( jpidta, il1+ifreq-1 ) |
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| 205 | READ(inumcf,9201) ( ii, ji = il1, il2, 5 ) |
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| 206 | READ(inumcf,'(/)') |
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| 207 | DO jj = jpjdta, 1, -1 |
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| 208 | READ(inumcf,9202) ij, ( idata(ji,jj), ji = il1, il2 ) |
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| 209 | END DO |
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| 210 | il1 = il1 + ifreq |
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| 211 | END DO |
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| 212 | |
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| 213 | DO jj = 1, nlcj |
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| 214 | DO ji = 1, nlci |
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| 215 | icof(ji,jj) = idata( mig(ji), mjg(jj) ) |
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| 216 | END DO |
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| 217 | END DO |
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| 218 | DO jj = nlcj+1, jpj |
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| 219 | DO ji = 1, nlci |
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| 220 | icof(ji,jj) = icof(ji,nlcj) |
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| 221 | END DO |
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| 222 | END DO |
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| 223 | DO jj = 1, jpj |
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| 224 | DO ji = nlci+1, jpi |
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| 225 | icof(ji,jj) = icof(nlci,jj) |
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| 226 | END DO |
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| 227 | END DO |
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| 228 | |
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| 229 | 9101 FORMAT(1x,a15,2i8) |
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| 230 | 9201 FORMAT(3x,13(i3,12x)) |
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| 231 | 9202 FORMAT(i3,41i3) |
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| 232 | |
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| 233 | |
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| 234 | ! Set ahm1 and ahm2 ( T- and F- points) (used for laplacian operator) |
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| 235 | ! ================= |
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| 236 | ! define ahm1 and ahm2 at the right grid point position |
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| 237 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
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| 238 | |
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| 239 | |
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| 240 | ! Decrease ahm to zahmeq m2/s in the tropics |
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| 241 | ! (from 90 to 20 degre: ahm = constant |
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| 242 | ! from 20 to 2.5 degre: ahm = decrease in (1-cos)/2 |
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| 243 | ! from 2.5 to 0 degre: ahm = constant |
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| 244 | ! symmetric in the south hemisphere) |
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| 245 | |
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| 246 | zahmeq = aht0 |
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| 247 | |
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| 248 | DO jj = 1, jpj |
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| 249 | DO ji = 1, jpi |
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| 250 | IF( ABS( gphif(ji,jj) ) >= 20. ) THEN |
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| 251 | ahm2(ji,jj) = ahm0 |
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| 252 | ELSEIF( ABS( gphif(ji,jj) ) <= 2.5 ) THEN |
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| 253 | ahm2(ji,jj) = zahmeq |
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| 254 | ELSE |
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| 255 | ahm2(ji,jj) = zahmeq + (ahm0-zahmeq)/2. & |
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| 256 | * ( 1. - COS( rad * ( ABS(gphif(ji,jj))-2.5 ) * 180. / 17.5 ) ) |
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| 257 | ENDIF |
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| 258 | IF( ABS( gphit(ji,jj) ) >= 20. ) THEN |
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| 259 | ahm1(ji,jj) = ahm0 |
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| 260 | ELSEIF( ABS( gphit(ji,jj) ) <= 2.5 ) THEN |
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| 261 | ahm1(ji,jj) = zahmeq |
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| 262 | ELSE |
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| 263 | ahm1(ji,jj) = zahmeq + (ahm0-zahmeq)/2. & |
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| 264 | * ( 1. - COS( rad * ( ABS(gphit(ji,jj))-2.5 ) * 180. / 17.5 ) ) |
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| 265 | ENDIF |
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| 266 | END DO |
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| 267 | END DO |
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| 268 | |
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| 269 | ! increase along western boundaries of equatorial strip |
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| 270 | ! t-point |
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| 271 | DO jj = 1, jpjm1 |
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| 272 | DO ji = 1, jpim1 |
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| 273 | zcoft = FLOAT( icof(ji,jj) ) / 100. |
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| 274 | ahm1(ji,jj) = zcoft * ahm0 + (1.-zcoft) * ahm1(ji,jj) |
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| 275 | END DO |
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| 276 | END DO |
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| 277 | ! f-point |
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| 278 | icof(:,:) = icof(:,:) * tmask(:,:,1) |
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| 279 | DO jj = 1, jpjm1 |
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| 280 | DO ji = 1, jpim1 |
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| 281 | 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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| 282 | IF( zmsk == 0. ) THEN |
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| 283 | zcoff = 1. |
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| 284 | ELSE |
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| 285 | zcoff = FLOAT( icof(ji,jj+1) + icof(ji+1,jj+1) + icof(ji,jj) + icof(ji,jj+1) ) & |
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| 286 | / (zmsk * 100.) |
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| 287 | ENDIF |
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| 288 | ahm2(ji,jj) = zcoff * ahm0 + (1.-zcoff) * ahm2(ji,jj) |
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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 | |
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| 293 | ! Lateral boundary conditions on ( ahm1, ahm2 ) |
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| 294 | ! ============== |
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| 295 | CALL lbc_lnk( ahm1, 'T', 1. ) ! T-point, unchanged sign |
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| 296 | CALL lbc_lnk( ahm2, 'F', 1. ) ! F-point, unchanged sign |
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| 297 | |
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| 298 | ! Control print |
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| 299 | IF( lwp .AND. ld_print ) THEN |
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| 300 | WRITE(numout,*) |
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| 301 | WRITE(numout,*) 'inildf: 2D ahm1 array' |
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| 302 | CALL prihre(ahm1,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 303 | WRITE(numout,*) |
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| 304 | WRITE(numout,*) 'inildf: 2D ahm2 array' |
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| 305 | CALL prihre(ahm2,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 306 | ENDIF |
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| 307 | |
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| 308 | END SUBROUTINE ldf_dyn_c2d_orca |
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