| 1 | !!---------------------------------------------------------------------- |
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| 2 | !! *** ldfdyn_c3d.h90 *** |
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| 3 | !!---------------------------------------------------------------------- |
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| 4 | |
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| 5 | !!---------------------------------------------------------------------- |
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| 6 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 7 | !! $Id$ |
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| 8 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | !! 'key_dynldf_c3d' 3D lateral eddy viscosity coefficients |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | |
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| 15 | SUBROUTINE ldf_dyn_c3d( ld_print ) |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | !! *** ROUTINE ldf_dyn_c3d *** |
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| 18 | !! |
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| 19 | !! ** Purpose : initializations of the horizontal ocean physics |
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| 20 | !! |
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| 21 | !! ** Method : 3D eddy viscosity coef. ( longitude, latitude, depth ) |
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| 22 | !! laplacian operator : ahm1, ahm2 defined at T- and F-points |
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| 23 | !! ahm2, ahm4 never used |
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| 24 | !! bilaplacian operator : ahm1, ahm2 never used |
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| 25 | !! : ahm3, ahm4 defined at U- and V-points |
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| 26 | !! ??? explanation of the default is missing |
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| 27 | !!---------------------------------------------------------------------- |
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| 28 | USE ldftra_oce, ONLY : aht0 |
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| 29 | USE iom |
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| 30 | !! |
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| 31 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
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| 32 | !! |
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| 33 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 34 | REAL(wp) :: zr = 0.2 ! maximum of the reduction factor at the bottom ocean ( 0 < zr < 1 ) |
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| 35 | REAL(wp) :: zh = 500. ! depth of at which start the reduction ( > dept(1) ) |
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| 36 | REAL(wp) :: zd_max ! maximum grid spacing over the global domain |
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| 37 | REAL(wp) :: za00, zc, zd, zetmax, zefmax, zeumax, zevmax ! local scalars |
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| 38 | REAL(wp), POINTER, DIMENSION(:) :: zcoef |
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| 39 | !!---------------------------------------------------------------------- |
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| 40 | ! |
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| 41 | CALL wrk_alloc( jpk, zcoef ) |
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| 42 | ! |
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| 43 | IF(lwp) WRITE(numout,*) |
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| 44 | IF(lwp) WRITE(numout,*) 'ldf_dyn_c3d : 3D lateral eddy viscosity coefficient' |
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| 45 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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| 46 | |
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| 47 | |
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| 48 | ! Set ahm1 and ahm2 ( T- and F- points) (used for laplacian operators |
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| 49 | ! ================= whatever its orientation is) |
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| 50 | IF( ln_dynldf_lap ) THEN |
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| 51 | ! define ahm1 and ahm2 at the right grid point position |
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| 52 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
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| 53 | |
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| 54 | zd_max = MAX( MAXVAL( e1t(:,:) ), MAXVAL( e2t(:,:) ) ) |
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| 55 | IF( lk_mpp ) CALL mpp_max( zd_max ) ! max over the global domain |
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| 56 | |
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| 57 | IF(lwp) WRITE(numout,*) ' laplacian operator: ahm proportional to e1' |
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| 58 | IF(lwp) WRITE(numout,*) ' maximum grid-spacing = ', zd_max, ' maximum value for ahm = ', ahm0 |
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| 59 | |
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| 60 | za00 = ahm0 / zd_max |
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| 61 | |
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| 62 | IF( ln_dynldf_iso ) THEN |
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| 63 | IF(lwp) WRITE(numout,*) ' Caution, as implemented now, the isopycnal part of momentum' |
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| 64 | IF(lwp) WRITE(numout,*) ' mixing use aht0 as eddy viscosity coefficient. Thus, it is' |
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| 65 | IF(lwp) WRITE(numout,*) ' uniform and you must be sure that your ahm is greater than' |
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| 66 | IF(lwp) WRITE(numout,*) ' aht0 everywhere in the model domain.' |
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| 67 | ENDIF |
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| 68 | |
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| 69 | CALL ldf_zpf( .TRUE. , 1000., 500., 0.25, fsdept(:,:,:), ahm1 ) ! vertical profile |
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| 70 | CALL ldf_zpf( .TRUE. , 1000., 500., 0.25, fsdept(:,:,:), ahm2 ) ! vertical profile |
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| 71 | DO jk = 1,jpk |
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| 72 | DO jj = 1, jpj |
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| 73 | DO ji = 1, jpi |
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| 74 | zetmax = MAX( e1t(ji,jj), e2t(ji,jj) ) |
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| 75 | zefmax = MAX( e1f(ji,jj), e2f(ji,jj) ) |
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| 76 | ahm1(ji,jj,jk) = za00 * zetmax * ahm1(ji,jj,jk) |
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| 77 | ahm2(ji,jj,jk) = za00 * zefmax * ahm2(ji,jj,jk) |
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| 78 | END DO |
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| 79 | END DO |
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| 80 | END DO |
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| 81 | |
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| 82 | |
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| 83 | ! Special case for ORCA R1, R2 and R4 configurations (overwrite the value of ahm1 ahm2) |
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| 84 | ! ============================================== |
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| 85 | IF( cp_cfg == "orca" .AND. ( jp_cfg == 1 .OR. jp_cfg == 2 .OR. jp_cfg == 4 ) ) THEN |
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| 86 | IF(lwp) WRITE(numout,*) |
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| 87 | IF(lwp) WRITE(numout,*) ' ORCA R1, R2 or R4: overwrite the previous definition of ahm' |
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| 88 | IF(lwp) WRITE(numout,*) ' =================' |
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| 89 | CALL ldf_dyn_c3d_orca( ld_print ) |
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| 90 | ENDIF |
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| 91 | |
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| 92 | ENDIF |
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| 93 | |
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| 94 | ! Control print |
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| 95 | IF(lwp .AND. ld_print ) THEN |
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| 96 | WRITE(numout,*) |
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| 97 | WRITE(numout,*) ' 3D ahm1 array (k=1)' |
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| 98 | CALL prihre( ahm1(:,:,1), jpi, jpj, 1, jpi, 20, 1, jpj, 20, 1.e-3, numout ) |
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| 99 | WRITE(numout,*) |
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| 100 | WRITE(numout,*) ' 3D ahm2 array (k=1)' |
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| 101 | CALL prihre( ahm2(:,:,1), jpi, jpj, 1, jpi, 20, 1, jpj, 20, 1.e-3, numout ) |
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| 102 | ENDIF |
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| 103 | |
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| 104 | |
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| 105 | ! ahm3 and ahm4 at U- and V-points (used for bilaplacian operator |
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| 106 | ! ================================ whatever its orientation is) |
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| 107 | ! (USER: modify ahm3 and ahm4 following your desiderata) |
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| 108 | ! Here: ahm is proportional to the cube of the maximum of the gridspacing |
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| 109 | ! in the to horizontal direction |
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| 110 | |
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| 111 | IF( ln_dynldf_bilap ) THEN |
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| 112 | |
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| 113 | zd_max = MAX( MAXVAL( e1u(:,:) ), MAXVAL( e2u(:,:) ) ) |
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| 114 | IF( lk_mpp ) CALL mpp_max( zd_max ) ! max over the global domain |
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| 115 | |
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| 116 | IF(lwp) WRITE(numout,*) ' bi-laplacian operator: ahm proportional to e1**3 ' |
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| 117 | IF(lwp) WRITE(numout,*) ' maximum grid-spacing = ', zd_max, ' maximum value for ahm = ', ahm0 |
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| 118 | |
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| 119 | za00 = ahm0_blp / ( zd_max * zd_max * zd_max ) |
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| 120 | DO jj = 1, jpj |
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| 121 | DO ji = 1, jpi |
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| 122 | zeumax = MAX( e1u(ji,jj), e2u(ji,jj) ) |
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| 123 | zevmax = MAX( e1v(ji,jj), e2v(ji,jj) ) |
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| 124 | ahm3(ji,jj,1) = za00 * zeumax * zeumax * zeumax |
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| 125 | ahm4(ji,jj,1) = za00 * zevmax * zevmax * zevmax |
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| 126 | END DO |
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| 127 | END DO |
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| 128 | |
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| 129 | zh = MAX( zh, fsdept(1,1,1) ) ! at least the first reach ahm0 |
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| 130 | IF( ln_zco ) THEN ! z-coordinate, same profile everywhere |
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| 131 | IF(lwp) WRITE(numout,'(36x," ahm ", 7x)') |
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| 132 | DO jk = 1, jpk |
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| 133 | IF( fsdept(1,1,jk) <= zh ) THEN |
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| 134 | zcoef(jk) = 1.e0 |
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| 135 | ELSE |
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| 136 | zcoef(jk) = 1.e0 + ( zr - 1.e0 ) & |
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| 137 | & * ( 1. - EXP( ( fsdept(1,1,jk ) - zh ) / zh ) ) & |
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| 138 | & / ( 1. - EXP( ( fsdept(1,1,jpkm1) - zh ) / zh ) ) |
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| 139 | ENDIF |
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| 140 | ahm3(:,:,jk) = ahm3(:,:,1) * zcoef(jk) |
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| 141 | ahm4(:,:,jk) = ahm4(:,:,1) * zcoef(jk) |
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| 142 | IF(lwp) WRITE(numout,'(34x,E7.2,8x,i3)') zcoef(jk) * ahm0, jk |
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| 143 | END DO |
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| 144 | ELSE ! partial steps or s-ccordinate |
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| 145 | zc = MAXVAL( fsdept(:,:,jpkm1) ) |
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| 146 | IF( lk_mpp ) CALL mpp_max( zc ) ! max over the global domain |
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| 147 | |
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| 148 | zc = 1. / ( 1. - EXP( ( zc - zh ) / zh ) ) |
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| 149 | DO jk = 2, jpkm1 |
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| 150 | DO jj = 1, jpj |
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| 151 | DO ji = 1, jpi |
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| 152 | IF( fsdept(ji,jj,jk) <= zh ) THEN |
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| 153 | ahm3(ji,jj,jk) = ahm3(ji,jj,1) |
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| 154 | ahm4(ji,jj,jk) = ahm4(ji,jj,1) |
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| 155 | ELSE |
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| 156 | zd = 1.e0 + ( zr - 1.e0 ) * ( 1. - EXP( ( fsdept(ji,jj,jk) - zh ) / zh ) ) * zc |
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| 157 | ahm3(ji,jj,jk) = ahm3(ji,jj,1) * zd |
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| 158 | ahm4(ji,jj,jk) = ahm4(ji,jj,1) * zd |
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| 159 | ENDIF |
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| 160 | END DO |
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| 161 | END DO |
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| 162 | END DO |
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| 163 | ahm3(:,:,jpk) = ahm3(:,:,jpkm1) |
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| 164 | ahm4(:,:,jpk) = ahm4(:,:,jpkm1) |
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| 165 | IF(lwp) WRITE(numout,'(36x," ahm ", 7x)') |
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| 166 | DO jk = 1, jpk |
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| 167 | IF(lwp) WRITE(numout,'(30x,E10.2,8x,i3)') ahm3(1,1,jk), jk |
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| 168 | END DO |
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| 169 | ENDIF |
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| 170 | |
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| 171 | ! Control print |
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| 172 | IF( lwp .AND. ld_print ) THEN |
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| 173 | WRITE(numout,*) |
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| 174 | WRITE(numout,*) 'inildf: ahm3 array at level 1' |
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| 175 | CALL prihre(ahm3(:,:,1 ),jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 176 | WRITE(numout,*) |
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| 177 | WRITE(numout,*) 'inildf: ahm4 array at level 1' |
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| 178 | CALL prihre(ahm4(:,:,jpk),jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 179 | ENDIF |
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| 180 | ENDIF |
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| 181 | ! |
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| 182 | CALL wrk_dealloc( jpk, zcoef ) |
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| 183 | ! |
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| 184 | END SUBROUTINE ldf_dyn_c3d |
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| 185 | |
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| 186 | |
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| 187 | SUBROUTINE ldf_dyn_c3d_orca( ld_print ) |
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| 188 | !!---------------------------------------------------------------------- |
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| 189 | !! *** ROUTINE ldf_dyn_c3d *** |
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| 190 | !! |
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| 191 | !! ** Purpose : ORCA R1, R2 and R4 only |
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| 192 | !! |
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| 193 | !! ** Method : blah blah blah .... |
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| 194 | !!---------------------------------------------------------------------- |
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| 195 | USE ldftra_oce, ONLY: aht0 |
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| 196 | USE iom |
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| 197 | !! |
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| 198 | LOGICAL, INTENT(in) :: ld_print ! If true, output arrays on numout |
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| 199 | !! |
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| 200 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
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| 201 | INTEGER :: ii0, ii1, ij0, ij1 ! local integers |
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| 202 | INTEGER :: inum, iim, ijm ! |
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| 203 | INTEGER :: ifreq, il1, il2, ij, ii |
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| 204 | REAL(wp) :: zahmeq, zcoff, zcoft, zmsk ! local scalars |
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| 205 | REAL(wp) :: zemax , zemin, zetmax, zefmax, zeref, zahmm, zemax75 |
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| 206 | CHARACTER (len=15) :: clexp |
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| 207 | INTEGER , POINTER, DIMENSION(:,:) :: icof |
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| 208 | INTEGER , POINTER, DIMENSION(:,:) :: imsk |
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| 209 | REAL(wp), POINTER, DIMENSION(: ) :: zcoef |
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| 210 | REAL(wp), POINTER, DIMENSION(:,:) :: zahm0 |
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| 211 | ! |
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| 212 | REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ztemp2d ! temporary array to read ahmcoef file |
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| 213 | !!---------------------------------------------------------------------- |
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| 214 | ! |
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| 215 | CALL wrk_alloc( jpi , jpj , icof ) |
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| 216 | CALL wrk_alloc( jpi , jpj , imsk ) |
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| 217 | CALL wrk_alloc( jpk , zcoef ) |
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| 218 | CALL wrk_alloc( jpi , jpj , zahm0 ) |
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| 219 | ! |
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| 220 | IF(lwp) WRITE(numout,*) |
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| 221 | IF(lwp) WRITE(numout,*) 'ldfdyn_c3d_orca : 3D eddy viscosity coefficient' |
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| 222 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~~' |
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| 223 | IF(lwp) WRITE(numout,*) ' orca R1, R2 or R4 configuration: reduced in the surface Eq. strip ' |
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| 224 | |
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| 225 | ! Read 2d integer array to specify western boundary increase in the |
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| 226 | ! ===================== equatorial strip (20N-20S) defined at t-points |
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| 227 | ALLOCATE( ztemp2d(jpi,jpj) ) |
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| 228 | ztemp2d(:,:) = 0. |
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| 229 | CALL iom_open ( 'ahmcoef.nc', inum ) |
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| 230 | CALL iom_get ( inum, jpdom_data, 'icof', ztemp2d) |
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| 231 | icof(:,:) = NINT(ztemp2d(:,:)) |
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| 232 | CALL iom_close( inum ) |
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| 233 | DEALLOCATE(ztemp2d) |
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| 234 | |
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| 235 | ! Set ahm1 and ahm2 |
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| 236 | ! ================= |
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| 237 | |
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| 238 | ! define ahm1 and ahm2 at the right grid point position |
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| 239 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
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| 240 | ! biharmonic : ahm1 (ahm2) defined at u- (v-) point |
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| 241 | ! harmonic : ahm1 (ahm2) defined at t- (f-) point |
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| 242 | |
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| 243 | ! first level : as for 2D coefficients |
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| 244 | |
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| 245 | ! Decrease ahm to zahmeq m2/s in the tropics |
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| 246 | ! (from 90 to 20 degre: ahm = constant |
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| 247 | ! from 20 to 2.5 degre: ahm = decrease in (1-cos)/2 |
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| 248 | ! from 2.5 to 0 degre: ahm = constant |
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| 249 | ! symmetric in the south hemisphere) |
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| 250 | |
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| 251 | IF( jp_cfg == 4 ) THEN |
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| 252 | zahmeq = 5.0 * aht0 |
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| 253 | zahmm = min( 160000.0, ahm0) |
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| 254 | zemax = MAXVAL ( e1t(:,:) * e2t(:,:), ssmask(:,:) .GE. 0.5 ) |
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| 255 | zemin = MINVAL ( e1t(:,:) * e2t(:,:), ssmask(:,:) .GE. 0.5 ) |
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| 256 | zeref = MAXVAL ( e1t(:,:) * e2t(:,:), & |
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| 257 | & ssmask(:,:) .GE. 0.5 .AND. ABS(gphit(:,:)) .GT. 50. ) |
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| 258 | |
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| 259 | DO jj = 1, jpj |
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| 260 | DO ji = 1, jpi |
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| 261 | zmsk = e1t(ji,jj) * e2t(ji,jj) |
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| 262 | IF( abs(gphit(ji,jj)) .LE. 15 ) THEN |
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| 263 | zahm0(ji,jj) = ahm0 |
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| 264 | ELSE |
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| 265 | IF( zmsk .GE. zeref ) THEN |
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| 266 | zahm0(ji,jj) = ahm0 |
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| 267 | ELSE |
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| 268 | zahm0(ji,jj) = zahmm + (ahm0-zahmm)*(1.0 - & |
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| 269 | & cos((rpi*0.5*(zmsk-zemin)/(zeref-zemin)))) |
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| 270 | ENDIF |
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| 271 | ENDIF |
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| 272 | END DO |
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| 273 | END DO |
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| 274 | ENDIF |
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| 275 | |
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| 276 | IF( jp_cfg == 2 ) THEN |
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| 277 | zahmeq = aht0 |
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| 278 | zahmm = ahm0 |
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| 279 | zahm0(:,:) = ahm0 |
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| 280 | ENDIF |
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| 281 | |
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| 282 | IF( jp_cfg == 1 ) THEN |
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| 283 | zahmeq = aht0 ! reduced to aht0 on equator; set to ahm0 if no tropical reduction is required |
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| 284 | zahmm = ahm0 |
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| 285 | zahm0(:,:) = ahm0 |
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| 286 | ENDIF |
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| 287 | |
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| 288 | DO jj = 1, jpj |
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| 289 | DO ji = 1, jpi |
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| 290 | IF( ABS(gphif(ji,jj)) >= 20.) THEN |
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| 291 | ahm2(ji,jj,1) = zahm0(ji,jj) |
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| 292 | ELSEIF( ABS(gphif(ji,jj)) <= 2.5) THEN |
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| 293 | ahm2(ji,jj,1) = zahmeq |
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| 294 | ELSE |
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| 295 | ahm2(ji,jj,1) = zahmeq + (zahm0(ji,jj)-zahmeq)/2. & |
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| 296 | & *(1.-COS( rad*(ABS(gphif(ji,jj))-2.5)*180./17.5 ) ) |
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| 297 | ENDIF |
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| 298 | IF( ABS(gphit(ji,jj)) >= 20.) THEN |
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| 299 | ahm1(ji,jj,1) = zahm0(ji,jj) |
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| 300 | ELSEIF( ABS(gphit(ji,jj)) <= 2.5) THEN |
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| 301 | ahm1(ji,jj,1) = zahmeq |
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| 302 | ELSE |
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| 303 | ahm1(ji,jj,1) = zahmeq + (zahm0(ji,jj)-zahmeq)/2. & |
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| 304 | & *(1.-COS( rad*(ABS(gphit(ji,jj))-2.5)*180./17.5 ) ) |
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| 305 | ENDIF |
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| 306 | END DO |
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| 307 | END DO |
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| 308 | |
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| 309 | ! increase along western boundaries of equatorial strip |
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| 310 | ! t-point |
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| 311 | DO jj = 1, jpjm1 |
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| 312 | DO ji = 1, jpim1 |
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| 313 | zcoft = float( icof(ji,jj) ) / 100. |
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| 314 | ahm1(ji,jj,1) = zcoft * zahm0(ji,jj) + (1.-zcoft) * ahm1(ji,jj,1) |
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| 315 | END DO |
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| 316 | END DO |
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| 317 | ! f-point |
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| 318 | icof(:,:) = icof(:,:) * ssmask(:,:) |
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| 319 | DO jj = 1, jpjm1 |
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| 320 | DO ji = 1, jpim1 ! NO vector opt. |
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| 321 | zmsk = ssmask(ji,jj+1) + ssmask(ji+1,jj+1) + ssmask(ji,jj) + ssmask(ji,jj+1) |
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| 322 | IF( zmsk == 0. ) THEN |
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| 323 | zcoff = 1. |
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| 324 | ELSE |
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| 325 | zcoff = FLOAT( icof(ji,jj+1) + icof(ji+1,jj+1) + icof(ji,jj) + icof(ji,jj+1) ) & |
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| 326 | / (zmsk * 100.) |
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| 327 | ENDIF |
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| 328 | ahm2(ji,jj,1) = zcoff * zahm0(ji,jj) + (1.-zcoff) * ahm2(ji,jj,1) |
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| 329 | END DO |
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| 330 | END DO |
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| 331 | |
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| 332 | ! other level: re-increase the coef in the deep ocean |
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| 333 | !================================================================== |
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| 334 | ! Prior to v3.3, zcoeff was hardwired according to k-index jk. |
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| 335 | ! |
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| 336 | ! From v3.3 onwards this has been generalised to a function of |
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| 337 | ! depth so that it can be used with any number of levels. |
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| 338 | ! |
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| 339 | ! The function has been chosen to match the original values (shown |
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| 340 | ! in the following comments) when using the standard 31 ORCA levels. |
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| 341 | ! DO jk = 1, 21 |
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| 342 | ! zcoef(jk) = 1._wp |
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| 343 | ! END DO |
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| 344 | ! zcoef(22) = 2._wp |
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| 345 | ! zcoef(23) = 3._wp |
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| 346 | ! zcoef(24) = 5._wp |
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| 347 | ! zcoef(25) = 7._wp |
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| 348 | ! zcoef(26) = 9._wp |
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| 349 | ! DO jk = 27, jpk |
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| 350 | ! zcoef(jk) = 10._wp |
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| 351 | ! END DO |
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| 352 | !================================================================== |
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| 353 | |
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| 354 | IF(lwp) THEN |
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| 355 | WRITE(numout,*) |
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| 356 | WRITE(numout,*) ' 1D zcoef array ' |
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| 357 | WRITE(numout,*) ' ~~~~~~~~~~~~~~ ' |
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| 358 | WRITE(numout,*) |
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| 359 | WRITE(numout,*) ' jk zcoef ' |
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| 360 | ENDIF |
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| 361 | |
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| 362 | DO jk=1, jpk |
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| 363 | zcoef(jk) = 1.0_wp + NINT(9.0_wp*(gdept_1d(jk)-800.0_wp)/(3000.0_wp-800.0_wp)) |
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| 364 | zcoef(jk) = MIN(10.0_wp, MAX(1.0_wp, zcoef(jk))) |
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| 365 | IF(lwp) WRITE(numout,'(4x,i3,6x,f7.3)') jk,zcoef(jk) |
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| 366 | END DO |
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| 367 | |
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| 368 | DO jk = 2, jpk |
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| 369 | ahm1(:,:,jk) = MIN( zahm0(:,:), zcoef(jk) * ahm1(:,:,1) ) |
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| 370 | ahm2(:,:,jk) = MIN( zahm0(:,:), zcoef(jk) * ahm2(:,:,1) ) |
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| 371 | END DO |
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| 372 | |
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| 373 | IF( jp_cfg == 4 ) THEN ! Limit AHM in Gibraltar strait |
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| 374 | ij0 = 50 ; ij1 = 53 |
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| 375 | ii0 = 69 ; ii1 = 71 |
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| 376 | DO jk = 1, jpk |
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| 377 | ahm1(mi0(ii0):mi1(ii1),mj0(ij0):mj1(ij1),jk) = MIN( zahmm, ahm1(mi0(ii0):mi1(ii1),mj0(ij0):mj1(ij1),jk) ) |
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| 378 | ahm2(mi0(ii0):mi1(ii1),mj0(ij0):mj1(ij1),jk) = MIN( zahmm, ahm2(mi0(ii0):mi1(ii1),mj0(ij0):mj1(ij1),jk) ) |
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| 379 | END DO |
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| 380 | ENDIF |
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| 381 | CALL lbc_lnk( ahm1, 'T', 1. ) ! Lateral boundary conditions (unchanged sign) |
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| 382 | CALL lbc_lnk( ahm2, 'F', 1. ) |
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| 383 | |
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| 384 | IF( jp_cfg == 1 ) THEN ! Limit AHM south of -75 (critical for Giant ice shelves with small e1/e2) |
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| 385 | ! special orca1 treatment remove the grid size scaling. Need to restore it south of -75N |
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| 386 | ! define max grid size south of -75 |
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| 387 | imsk(:,:) = 0 |
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| 388 | WHERE( gphit(:,:) < -75.0 ) imsk(:,:) = 1 |
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| 389 | zemax75 = MAX( MAXVAL( e1t(:,:)*imsk(:,:) ), MAXVAL( e2t(:,:)*imsk(:,:) ) ) |
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| 390 | IF( lk_mpp ) CALL mpp_max(zemax75) |
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| 391 | ! |
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| 392 | ! apply grid size scaling of ahm south of -75 (no change north of it) |
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| 393 | DO jj = 1, jpj |
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| 394 | DO ji = 1, jpi |
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| 395 | IF ( gphit(ji,jj) < -75.0 ) THEN |
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| 396 | zetmax = MAX( e1t(ji,jj), e2t(ji,jj) ) |
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| 397 | zefmax = MAX( e1f(ji,jj), e2f(ji,jj) ) |
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| 398 | ahm1(ji,jj,:) = zetmax / zemax75 * ahm1(ji,jj,:) |
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| 399 | ahm2(ji,jj,:) = zefmax / zemax75 * ahm2(ji,jj,:) |
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| 400 | END IF |
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| 401 | END DO |
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| 402 | END DO |
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| 403 | END IF |
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| 404 | |
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| 405 | |
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| 406 | IF(lwp) THEN ! Control print |
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| 407 | WRITE(numout,*) |
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| 408 | WRITE(numout,*) ' 3D ahm1 array (k=1)' |
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| 409 | CALL prihre( ahm1(:,:,1), jpi, jpj, 1, jpi, 20, 1, jpj, 20, 1.e-3, numout ) |
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| 410 | WRITE(numout,*) |
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| 411 | WRITE(numout,*) ' 3D ahm2 array (k=1)' |
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| 412 | CALL prihre( ahm2(:,:,1), jpi, jpj, 1, jpi, 20, 1, jpj, 20, 1.e-3, numout ) |
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| 413 | WRITE(numout,*) |
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| 414 | WRITE(numout,*) ' 3D ahm2 array (k=jpk)' |
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| 415 | CALL prihre( ahm2(:,:,jpk), jpi, jpj, 1, jpi, 20, 1, jpj, 20, 1.e-3, numout ) |
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| 416 | ENDIF |
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| 417 | |
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| 418 | |
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| 419 | ! Set ahm3 and ahm4 |
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| 420 | ! ================= |
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| 421 | |
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| 422 | ! define ahm3 and ahm4 at the right grid point position |
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| 423 | ! initialization to a constant value |
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| 424 | ! (USER: modify ahm3 and ahm4 following your desiderata) |
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| 425 | ! harmonic isopycnal or geopotential: |
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| 426 | ! ahm3 (ahm4) defined at u- (v-) point |
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| 427 | DO jk = 1, jpk |
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| 428 | DO jj = 2, jpj |
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| 429 | DO ji = 2, jpi |
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| 430 | ahm3(ji,jj,jk) = 0.5 * ( ahm2(ji,jj,jk) + ahm2(ji ,jj-1,jk) ) |
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| 431 | ahm4(ji,jj,jk) = 0.5 * ( ahm2(ji,jj,jk) + ahm2(ji-1,jj ,jk) ) |
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| 432 | END DO |
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| 433 | END DO |
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| 434 | END DO |
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| 435 | ahm3 ( :, 1, :) = ahm3 ( :, 2, :) |
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| 436 | ahm4 ( :, 1, :) = ahm4 ( :, 2, :) |
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| 437 | |
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| 438 | CALL lbc_lnk( ahm3, 'U', 1. ) ! Lateral boundary conditions (unchanged sign) |
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| 439 | CALL lbc_lnk( ahm4, 'V', 1. ) |
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| 440 | |
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| 441 | ! Control print |
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| 442 | |
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| 443 | IF( lwp .AND. ld_print ) THEN |
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| 444 | WRITE(numout,*) |
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| 445 | WRITE(numout,*) ' ahm3 array level 1' |
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| 446 | CALL prihre(ahm3(:,:,1),jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 447 | WRITE(numout,*) |
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| 448 | WRITE(numout,*) ' ahm4 array level 1' |
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| 449 | CALL prihre(ahm4(:,:,1),jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
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| 450 | ENDIF |
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| 451 | ! |
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| 452 | CALL wrk_dealloc( jpi , jpj , icof ) |
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| 453 | CALL wrk_dealloc( jpi , jpj , imsk ) |
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| 454 | CALL wrk_dealloc( jpk , zcoef ) |
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| 455 | CALL wrk_dealloc( jpi , jpj , zahm0 ) |
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| 456 | ! |
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| 457 | END SUBROUTINE ldf_dyn_c3d_orca |
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