[2990] | 1 | MODULE sbcwave |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE sbcwave *** |
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| 4 | !! Wave module |
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| 5 | !!====================================================================== |
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[3680] | 6 | !! History : 3.3.1 ! 2011-09 (Adani M) Original code: Drag Coefficient |
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| 7 | !! : 3.4 ! 2012-10 (Adani M) Stokes Drift |
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[2990] | 8 | !!---------------------------------------------------------------------- |
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| 9 | USE iom ! I/O manager library |
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| 10 | USE in_out_manager ! I/O manager |
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| 11 | USE lib_mpp ! distribued memory computing library |
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| 12 | USE fldread ! read input fields |
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[3680] | 13 | USE oce |
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[2990] | 14 | USE sbc_oce ! Surface boundary condition: ocean fields |
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[3680] | 15 | USE domvvl |
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[2990] | 16 | |
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| 17 | |
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| 18 | !!---------------------------------------------------------------------- |
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| 19 | !! sbc_wave : read drag coefficient from wave model in netcdf files |
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| 20 | !!---------------------------------------------------------------------- |
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| 21 | |
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| 22 | IMPLICIT NONE |
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| 23 | PRIVATE |
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| 24 | |
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[3105] | 25 | PUBLIC sbc_wave ! routine called in sbc_blk_core or sbc_blk_mfs |
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[2990] | 26 | |
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[3680] | 27 | INTEGER , PARAMETER :: jpfld = 3 ! maximum number of files to read for srokes drift |
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| 28 | INTEGER , PARAMETER :: jp_usd = 1 ! index of stokes drift (i-component) (m/s) at T-point |
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| 29 | INTEGER , PARAMETER :: jp_vsd = 2 ! index of stokes drift (j-component) (m/s) at T-point |
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| 30 | INTEGER , PARAMETER :: jp_wn = 3 ! index of wave number (1/m) at T-point |
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| 31 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_cd ! structure of input fields (file informations, fields read) Drag Coefficient |
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| 32 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_sd ! structure of input fields (file informations, fields read) Stokes Drift |
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[2990] | 33 | REAL(wp),PUBLIC,ALLOCATABLE,DIMENSION (:,:) :: cdn_wave |
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[3680] | 34 | REAL(wp),ALLOCATABLE,DIMENSION (:,:) :: usd2d,vsd2d,uwavenum,vwavenum |
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| 35 | REAL(wp),PUBLIC,ALLOCATABLE,DIMENSION (:,:,:) :: usd3d,vsd3d,wsd3d |
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[2990] | 36 | |
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[3680] | 37 | !! * Substitutions |
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| 38 | # include "domzgr_substitute.h90" |
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[2990] | 39 | !!---------------------------------------------------------------------- |
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| 40 | !! NEMO/OPA 4.0 , NEMO Consortium (2011) |
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| 41 | !! $Id: $ |
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| 42 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 43 | !!---------------------------------------------------------------------- |
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| 44 | CONTAINS |
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| 45 | |
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| 46 | SUBROUTINE sbc_wave( kt ) |
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| 47 | !!--------------------------------------------------------------------- |
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| 48 | !! *** ROUTINE sbc_apr *** |
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| 49 | !! |
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| 50 | !! ** Purpose : read drag coefficient from wave model in netcdf files. |
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| 51 | !! |
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| 52 | !! ** Method : - Read namelist namsbc_wave |
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| 53 | !! - Read Cd_n10 fields in netcdf files |
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[3680] | 54 | !! - Read stokes drift 2d in netcdf files |
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| 55 | !! - Read wave number in netcdf files |
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| 56 | !! - Compute 3d stokes drift using monochromatic |
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[2990] | 57 | !! ** action : |
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| 58 | !! |
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| 59 | !!--------------------------------------------------------------------- |
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[3680] | 60 | USE oce, ONLY : un,vn,hdivn,rotn |
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| 61 | USE divcur |
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| 62 | USE wrk_nemo |
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| 63 | #if defined key_bdy |
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| 64 | USE bdy_oce, ONLY : bdytmask |
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| 65 | #endif |
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| 66 | INTEGER, INTENT( in ) :: kt ! ocean time step |
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[2990] | 67 | INTEGER :: ierror ! return error code |
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[3680] | 68 | INTEGER :: ifpr, jj,ji,jk |
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| 69 | REAL(wp),DIMENSION(:,:,:),POINTER :: udummy,vdummy,hdivdummy,rotdummy |
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| 70 | REAL :: z2dt,z1_2dt |
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| 71 | TYPE(FLD_N), DIMENSION(jpfld) :: slf_i ! array of namelist informations on the fields to read |
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| 72 | CHARACTER(len=100) :: cn_dir ! Root directory for location of drag coefficient files |
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| 73 | TYPE(FLD_N) :: sn_cdg, sn_usd, sn_vsd, sn_wn ! informations about the fields to be read |
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[2990] | 74 | !!--------------------------------------------------------------------- |
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[3680] | 75 | NAMELIST/namsbc_wave/ sn_cdg, cn_dir, sn_usd, sn_vsd, sn_wn |
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[2990] | 76 | !!--------------------------------------------------------------------- |
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| 77 | |
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| 78 | !!---------------------------------------------------------------------- |
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| 79 | ! |
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| 80 | ! |
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| 81 | ! ! -------------------- ! |
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| 82 | IF( kt == nit000 ) THEN ! First call kt=nit000 ! |
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| 83 | ! ! -------------------- ! |
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| 84 | ! !* set file information (default values) |
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| 85 | ! ... default values (NB: frequency positive => hours, negative => months) |
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[4189] | 86 | ! ! file ! frequency ! variable ! time intep ! clim ! 'yearly' or ! weights ! rotation ! land/sea mask ! |
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| 87 | ! ! name ! (hours) ! name ! (T/F) ! (T/F) ! 'monthly' ! filename ! pairs ! filename ! |
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| 88 | sn_cdg = FLD_N('cdg_wave' , 1 ,'drag_coeff', .true. , .false. , 'daily' , '' , '' , '' ) |
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| 89 | sn_usd = FLD_N('sdw_wave' , 1 ,'u_sd2d', .true. , .false. , 'daily' , '' , '' , '' ) |
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| 90 | sn_vsd = FLD_N('sdw_wave' , 1 ,'v_sd2d', .true. , .false. , 'daily' , '' , '' , '' ) |
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| 91 | sn_wn = FLD_N( 'sdw_wave' , 1 ,'wave_num', .true. , .false. , 'daily' , '' , '' , '' ) |
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[3680] | 92 | cn_dir = './' ! directory in which the wave data are |
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[2990] | 93 | |
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| 94 | |
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| 95 | REWIND( numnam ) !* read in namlist namsbc_wave |
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| 96 | READ ( numnam, namsbc_wave ) |
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| 97 | ! |
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| 98 | |
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[3680] | 99 | IF ( ln_cdgw ) THEN |
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| 100 | ALLOCATE( sf_cd(1), STAT=ierror ) !* allocate and fill sf_wave with sn_cdg |
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| 101 | IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave: unable to allocate sf_wave structure' ) |
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| 102 | ! |
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| 103 | ALLOCATE( sf_cd(1)%fnow(jpi,jpj,1) ) |
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| 104 | IF( sn_cdg%ln_tint ) ALLOCATE( sf_cd(1)%fdta(jpi,jpj,1,2) ) |
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| 105 | CALL fld_fill( sf_cd, (/ sn_cdg /), cn_dir, 'sbc_wave', 'Wave module ', 'namsbc_wave' ) |
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| 106 | ALLOCATE( cdn_wave(jpi,jpj) ) |
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| 107 | cdn_wave(:,:) = 0.0 |
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| 108 | ENDIF |
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| 109 | IF ( ln_sdw ) THEN |
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| 110 | slf_i(jp_usd) = sn_usd ; slf_i(jp_vsd) = sn_vsd; slf_i(jp_wn) = sn_wn |
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| 111 | ALLOCATE( sf_sd(3), STAT=ierror ) !* allocate and fill sf_wave with sn_cdg |
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| 112 | IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave: unable to allocate sf_wave structure' ) |
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| 113 | ! |
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| 114 | DO ifpr= 1, jpfld |
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| 115 | ALLOCATE( sf_sd(ifpr)%fnow(jpi,jpj,1) ) |
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| 116 | IF( slf_i(ifpr)%ln_tint ) ALLOCATE( sf_sd(ifpr)%fdta(jpi,jpj,1,2) ) |
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| 117 | END DO |
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| 118 | CALL fld_fill( sf_sd, slf_i, cn_dir, 'sbc_wave', 'Wave module ', 'namsbc_wave' ) |
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| 119 | ALLOCATE( usd2d(jpi,jpj),vsd2d(jpi,jpj),uwavenum(jpi,jpj),vwavenum(jpi,jpj) ) |
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| 120 | ALLOCATE( usd3d(jpi,jpj,jpk),vsd3d(jpi,jpj,jpk),wsd3d(jpi,jpj,jpk) ) |
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| 121 | usd2d(:,:) = 0.0 ; vsd2d(:,:) = 0.0 ; uwavenum(:,:) = 0.0 ; vwavenum(:,:) = 0.0 |
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| 122 | usd3d(:,:,:) = 0.0 ;vsd3d(:,:,:) = 0.0 ; wsd3d(:,:,:) = 0.0 |
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| 123 | ENDIF |
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[2990] | 124 | ENDIF |
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| 125 | ! |
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| 126 | ! |
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[3680] | 127 | IF ( ln_cdgw ) THEN |
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| 128 | CALL fld_read( kt, nn_fsbc, sf_cd ) !* read drag coefficient from external forcing |
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| 129 | cdn_wave(:,:) = sf_cd(1)%fnow(:,:,1) |
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| 130 | ENDIF |
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| 131 | IF ( ln_sdw ) THEN |
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| 132 | CALL fld_read( kt, nn_fsbc, sf_sd ) !* read drag coefficient from external forcing |
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[2990] | 133 | |
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[3680] | 134 | ! Interpolate wavenumber, stokes drift into the grid_V and grid_V |
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| 135 | !------------------------------------------------- |
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| 136 | |
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| 137 | DO jj = 1, jpjm1 |
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| 138 | DO ji = 1, jpim1 |
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| 139 | uwavenum(ji,jj)=0.5 * ( 2. - umask(ji,jj,1) ) * ( sf_sd(3)%fnow(ji,jj,1) * tmask(ji,jj,1) & |
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| 140 | & + sf_sd(3)%fnow(ji+1,jj,1) * tmask(ji+1,jj,1) ) |
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| 141 | |
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| 142 | vwavenum(ji,jj)=0.5 * ( 2. - vmask(ji,jj,1) ) * ( sf_sd(3)%fnow(ji,jj,1) * tmask(ji,jj,1) & |
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| 143 | & + sf_sd(3)%fnow(ji,jj+1,1) * tmask(ji,jj+1,1) ) |
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| 144 | |
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| 145 | usd2d(ji,jj) = 0.5 * ( 2. - umask(ji,jj,1) ) * ( sf_sd(1)%fnow(ji,jj,1) * tmask(ji,jj,1) & |
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| 146 | & + sf_sd(1)%fnow(ji+1,jj,1) * tmask(ji+1,jj,1) ) |
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| 147 | |
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| 148 | vsd2d(ji,jj) = 0.5 * ( 2. - vmask(ji,jj,1) ) * ( sf_sd(2)%fnow(ji,jj,1) * tmask(ji,jj,1) & |
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| 149 | & + sf_sd(2)%fnow(ji,jj+1,1) * tmask(ji,jj+1,1) ) |
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| 150 | END DO |
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| 151 | END DO |
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| 152 | |
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| 153 | !Computation of the 3d Stokes Drift |
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| 154 | DO jk = 1, jpk |
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| 155 | DO jj = 1, jpj-1 |
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| 156 | DO ji = 1, jpi-1 |
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| 157 | usd3d(ji,jj,jk) = usd2d(ji,jj)*exp(2.0*uwavenum(ji,jj)*(-MIN( gdept(ji,jj,jk) , gdept(ji+1,jj ,jk)))) |
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| 158 | vsd3d(ji,jj,jk) = vsd2d(ji,jj)*exp(2.0*vwavenum(ji,jj)*(-MIN( gdept(ji,jj,jk) , gdept(ji ,jj+1,jk)))) |
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| 159 | END DO |
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| 160 | END DO |
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| 161 | usd3d(jpi,:,jk) = usd2d(jpi,:)*exp( 2.0*uwavenum(jpi,:)*(-gdept(jpi,:,jk)) ) |
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| 162 | vsd3d(:,jpj,jk) = vsd2d(:,jpj)*exp( 2.0*vwavenum(:,jpj)*(-gdept(:,jpj,jk)) ) |
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| 163 | END DO |
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| 164 | |
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| 165 | CALL wrk_alloc( jpi,jpj,jpk,udummy,vdummy,hdivdummy,rotdummy) |
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| 166 | |
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| 167 | udummy(:,:,:)=un(:,:,:) |
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| 168 | vdummy(:,:,:)=vn(:,:,:) |
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| 169 | hdivdummy(:,:,:)=hdivn(:,:,:) |
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| 170 | rotdummy(:,:,:)=rotn(:,:,:) |
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| 171 | un(:,:,:)=usd3d(:,:,:) |
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| 172 | vn(:,:,:)=vsd3d(:,:,:) |
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| 173 | CALL div_cur(kt) |
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| 174 | ! !------------------------------! |
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| 175 | ! ! Now Vertical Velocity ! |
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| 176 | ! !------------------------------! |
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| 177 | z2dt = 2._wp * rdt ! set time step size (Euler/Leapfrog) |
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| 178 | |
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| 179 | z1_2dt = 1.e0 / z2dt |
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| 180 | DO jk = jpkm1, 1, -1 ! integrate from the bottom the hor. divergence |
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| 181 | ! - ML - need 3 lines here because replacement of fse3t by its expression yields too long lines otherwise |
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| 182 | wsd3d(:,:,jk) = wsd3d(:,:,jk+1) - fse3t_n(:,:,jk) * hdivn(:,:,jk) & |
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| 183 | & - ( fse3t_a(:,:,jk) - fse3t_b(:,:,jk) ) & |
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| 184 | & * tmask(:,:,jk) * z1_2dt |
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| 185 | #if defined key_bdy |
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| 186 | wsd3d(:,:,jk) = wsd3d(:,:,jk) * bdytmask(:,:) |
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| 187 | #endif |
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| 188 | END DO |
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| 189 | hdivn(:,:,:)=hdivdummy(:,:,:) |
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| 190 | rotn(:,:,:)=rotdummy(:,:,:) |
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| 191 | vn(:,:,:)=vdummy(:,:,:) |
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| 192 | un(:,:,:)=udummy(:,:,:) |
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| 193 | CALL wrk_dealloc( jpi,jpj,jpk,udummy,vdummy,hdivdummy,rotdummy) |
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| 194 | ENDIF |
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[2990] | 195 | END SUBROUTINE sbc_wave |
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| 196 | |
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| 197 | !!====================================================================== |
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| 198 | END MODULE sbcwave |
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