MODULE sbcwave !!====================================================================== !! *** MODULE sbcwave *** !! Wave module !!====================================================================== !! History : 3.3.1 ! 2011-09 (Adani M) Original code: Drag Coefficient !! : 3.4 ! 2012-10 (Adani M) Stokes Drift !!---------------------------------------------------------------------- USE iom ! I/O manager library USE in_out_manager ! I/O manager USE lib_mpp ! distribued memory computing library USE fldread ! read input fields USE oce USE sbc_oce ! Surface boundary condition: ocean fields USE domvvl !!---------------------------------------------------------------------- !! sbc_wave : read drag coefficient from wave model in netcdf files !!---------------------------------------------------------------------- IMPLICIT NONE PRIVATE PUBLIC sbc_wave ! routine called in sbc_blk_core or sbc_blk_mfs INTEGER , PARAMETER :: jpfld = 3 ! maximum number of files to read for srokes drift INTEGER , PARAMETER :: jp_usd = 1 ! index of stokes drift (i-component) (m/s) at T-point INTEGER , PARAMETER :: jp_vsd = 2 ! index of stokes drift (j-component) (m/s) at T-point INTEGER , PARAMETER :: jp_wn = 3 ! index of wave number (1/m) at T-point TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_cd ! structure of input fields (file informations, fields read) Drag Coefficient TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_sd ! structure of input fields (file informations, fields read) Stokes Drift REAL(wp),PUBLIC,ALLOCATABLE,DIMENSION (:,:) :: cdn_wave REAL(wp),ALLOCATABLE,DIMENSION (:,:) :: usd2d,vsd2d,uwavenum,vwavenum REAL(wp),PUBLIC,ALLOCATABLE,DIMENSION (:,:,:) :: usd3d,vsd3d,wsd3d !! * Substitutions # include "domzgr_substitute.h90" !!---------------------------------------------------------------------- !! NEMO/OPA 4.0 , NEMO Consortium (2011) !! $Id: sbcwave.F90 2355 2015-05-20 07:11:50Z ufla $ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE sbc_wave( kt ) !!--------------------------------------------------------------------- !! *** ROUTINE sbc_apr *** !! !! ** Purpose : read drag coefficient from wave model in netcdf files. !! !! ** Method : - Read namelist namsbc_wave !! - Read Cd_n10 fields in netcdf files !! - Read stokes drift 2d in netcdf files !! - Read wave number in netcdf files !! - Compute 3d stokes drift using monochromatic !! ** action : !! !!--------------------------------------------------------------------- USE oce, ONLY : un,vn,hdivn,rotn USE divcur USE wrk_nemo #if defined key_bdy USE bdy_oce, ONLY : bdytmask #endif INTEGER, INTENT( in ) :: kt ! ocean time step INTEGER :: ierror ! return error code INTEGER :: ifpr, jj,ji,jk INTEGER :: ios ! Local integer output status for namelist read REAL(wp),DIMENSION(:,:,:),POINTER :: udummy,vdummy,hdivdummy,rotdummy REAL :: z2dt,z1_2dt TYPE(FLD_N), DIMENSION(jpfld) :: slf_i ! array of namelist informations on the fields to read CHARACTER(len=100) :: cn_dir ! Root directory for location of drag coefficient files TYPE(FLD_N) :: sn_cdg, sn_usd, sn_vsd, sn_wn ! informations about the fields to be read !!--------------------------------------------------------------------- NAMELIST/namsbc_wave/ sn_cdg, cn_dir, sn_usd, sn_vsd, sn_wn !!--------------------------------------------------------------------- !!---------------------------------------------------------------------- ! ! ! ! -------------------- ! IF( kt == nit000 ) THEN ! First call kt=nit000 ! ! ! -------------------- ! REWIND( numnam_ref ) ! Namelist namsbc_wave in reference namelist : File for drag coeff. from wave model READ ( numnam_ref, namsbc_wave, IOSTAT = ios, ERR = 901) 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_wave in reference namelist', lwp ) REWIND( numnam_cfg ) ! Namelist namsbc_wave in configuration namelist : File for drag coeff. from wave model READ ( numnam_cfg, namsbc_wave, IOSTAT = ios, ERR = 902 ) 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_wave in configuration namelist', lwp ) IF(lwm) WRITE ( numond, namsbc_wave ) ! IF ( ln_cdgw ) THEN ALLOCATE( sf_cd(1), STAT=ierror ) !* allocate and fill sf_wave with sn_cdg IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave: unable to allocate sf_wave structure' ) ! ALLOCATE( sf_cd(1)%fnow(jpi,jpj,1) ) IF( sn_cdg%ln_tint ) ALLOCATE( sf_cd(1)%fdta(jpi,jpj,1,2) ) CALL fld_fill( sf_cd, (/ sn_cdg /), cn_dir, 'sbc_wave', 'Wave module ', 'namsbc_wave' ) ALLOCATE( cdn_wave(jpi,jpj) ) cdn_wave(:,:) = 0.0 ENDIF IF ( ln_sdw ) THEN slf_i(jp_usd) = sn_usd ; slf_i(jp_vsd) = sn_vsd; slf_i(jp_wn) = sn_wn ALLOCATE( sf_sd(3), STAT=ierror ) !* allocate and fill sf_wave with sn_cdg IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_wave: unable to allocate sf_wave structure' ) ! DO ifpr= 1, jpfld ALLOCATE( sf_sd(ifpr)%fnow(jpi,jpj,1) ) IF( slf_i(ifpr)%ln_tint ) ALLOCATE( sf_sd(ifpr)%fdta(jpi,jpj,1,2) ) END DO CALL fld_fill( sf_sd, slf_i, cn_dir, 'sbc_wave', 'Wave module ', 'namsbc_wave' ) ALLOCATE( usd2d(jpi,jpj),vsd2d(jpi,jpj),uwavenum(jpi,jpj),vwavenum(jpi,jpj) ) ALLOCATE( usd3d(jpi,jpj,jpk),vsd3d(jpi,jpj,jpk),wsd3d(jpi,jpj,jpk) ) usd2d(:,:) = 0.0 ; vsd2d(:,:) = 0.0 ; uwavenum(:,:) = 0.0 ; vwavenum(:,:) = 0.0 usd3d(:,:,:) = 0.0 ;vsd3d(:,:,:) = 0.0 ; wsd3d(:,:,:) = 0.0 ENDIF ENDIF ! ! IF ( ln_cdgw ) THEN CALL fld_read( kt, nn_fsbc, sf_cd ) !* read drag coefficient from external forcing cdn_wave(:,:) = sf_cd(1)%fnow(:,:,1) ENDIF IF ( ln_sdw ) THEN CALL fld_read( kt, nn_fsbc, sf_sd ) !* read drag coefficient from external forcing ! Interpolate wavenumber, stokes drift into the grid_V and grid_V !------------------------------------------------- DO jj = 1, jpjm1 DO ji = 1, jpim1 uwavenum(ji,jj)=0.5 * ( 2. - umask(ji,jj,1) ) * ( sf_sd(3)%fnow(ji,jj,1) * tmask(ji,jj,1) & & + sf_sd(3)%fnow(ji+1,jj,1) * tmask(ji+1,jj,1) ) vwavenum(ji,jj)=0.5 * ( 2. - vmask(ji,jj,1) ) * ( sf_sd(3)%fnow(ji,jj,1) * tmask(ji,jj,1) & & + sf_sd(3)%fnow(ji,jj+1,1) * tmask(ji,jj+1,1) ) usd2d(ji,jj) = 0.5 * ( 2. - umask(ji,jj,1) ) * ( sf_sd(1)%fnow(ji,jj,1) * tmask(ji,jj,1) & & + sf_sd(1)%fnow(ji+1,jj,1) * tmask(ji+1,jj,1) ) vsd2d(ji,jj) = 0.5 * ( 2. - vmask(ji,jj,1) ) * ( sf_sd(2)%fnow(ji,jj,1) * tmask(ji,jj,1) & & + sf_sd(2)%fnow(ji,jj+1,1) * tmask(ji,jj+1,1) ) END DO END DO !Computation of the 3d Stokes Drift DO jk = 1, jpk DO jj = 1, jpj-1 DO ji = 1, jpi-1 usd3d(ji,jj,jk) = usd2d(ji,jj)*exp(2.0*uwavenum(ji,jj)*(-MIN( gdept_0(ji,jj,jk) , gdept_0(ji+1,jj ,jk)))) vsd3d(ji,jj,jk) = vsd2d(ji,jj)*exp(2.0*vwavenum(ji,jj)*(-MIN( gdept_0(ji,jj,jk) , gdept_0(ji ,jj+1,jk)))) END DO END DO usd3d(jpi,:,jk) = usd2d(jpi,:)*exp( 2.0*uwavenum(jpi,:)*(-gdept_0(jpi,:,jk)) ) vsd3d(:,jpj,jk) = vsd2d(:,jpj)*exp( 2.0*vwavenum(:,jpj)*(-gdept_0(:,jpj,jk)) ) END DO CALL wrk_alloc( jpi,jpj,jpk,udummy,vdummy,hdivdummy,rotdummy) udummy(:,:,:)=un(:,:,:) vdummy(:,:,:)=vn(:,:,:) hdivdummy(:,:,:)=hdivn(:,:,:) rotdummy(:,:,:)=rotn(:,:,:) un(:,:,:)=usd3d(:,:,:) vn(:,:,:)=vsd3d(:,:,:) CALL div_cur(kt) ! !------------------------------! ! ! Now Vertical Velocity ! ! !------------------------------! z2dt = 2._wp * rdt ! set time step size (Euler/Leapfrog) z1_2dt = 1.e0 / z2dt DO jk = jpkm1, 1, -1 ! integrate from the bottom the hor. divergence ! - ML - need 3 lines here because replacement of fse3t by its expression yields too long lines otherwise wsd3d(:,:,jk) = wsd3d(:,:,jk+1) - fse3t_n(:,:,jk) * hdivn(:,:,jk) & & - ( fse3t_a(:,:,jk) - fse3t_b(:,:,jk) ) & & * tmask(:,:,jk) * z1_2dt #if defined key_bdy wsd3d(:,:,jk) = wsd3d(:,:,jk) * bdytmask(:,:) #endif END DO hdivn(:,:,:)=hdivdummy(:,:,:) rotn(:,:,:)=rotdummy(:,:,:) vn(:,:,:)=vdummy(:,:,:) un(:,:,:)=udummy(:,:,:) CALL wrk_dealloc( jpi,jpj,jpk,udummy,vdummy,hdivdummy,rotdummy) ENDIF END SUBROUTINE sbc_wave !!====================================================================== END MODULE sbcwave