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- 2017-05-02T13:29:51+02:00 (7 years ago)
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branches/UKMO/dev_r5518_GO6_package/NEMOGCM/NEMO/LIM_SRC_3/limhdf.F90
r6486 r7993 7 7 !! - ! 2001-05 (G. Madec, R. Hordoir) opa norm 8 8 !! 1.0 ! 2002-08 (C. Ethe) F90, free form 9 !! 3.0 ! 2015-08 (O. Tintó and M. Castrillo) added lim_hdf (multiple) 9 10 !!---------------------------------------------------------------------- 10 11 #if defined key_lim3 … … 27 28 PRIVATE 28 29 29 PUBLIC lim_hdf 30 PUBLIC lim_hdf ! called by lim_trp 30 31 PUBLIC lim_hdf_init ! called by sbc_lim_init 31 32 … … 43 44 CONTAINS 44 45 45 SUBROUTINE lim_hdf( ptab )46 SUBROUTINE lim_hdf( ptab , ihdf_vars , jpl , nlay_i ) 46 47 !!------------------------------------------------------------------- 47 48 !! *** ROUTINE lim_hdf *** … … 54 55 !! ** Action : update ptab with the diffusive contribution 55 56 !!------------------------------------------------------------------- 56 REAL(wp), DIMENSION(jpi,jpj), INTENT( inout ) :: ptab ! Field on which the diffusion is applied 57 ! 58 INTEGER :: ji, jj ! dummy loop indices 57 INTEGER :: jpl, nlay_i, isize, ihdf_vars 58 REAL(wp), DIMENSION(:,:,:), INTENT( inout ),TARGET :: ptab ! Field on which the diffusion is applied 59 ! 60 INTEGER :: ji, jj, jk, jl , jm ! dummy loop indices 59 61 INTEGER :: iter, ierr ! local integers 60 REAL(wp) :: zrlxint, zconv ! local scalars 61 REAL(wp), POINTER, DIMENSION(:,:) :: zrlx, zflu, zflv, zdiv0, zdiv, ztab0 62 REAL(wp) :: zrlxint ! local scalars 63 REAL(wp), POINTER , DIMENSION ( : ) :: zconv ! local scalars 64 REAL(wp), POINTER , DIMENSION(:,:,:) :: zrlx,zdiv0, ztab0 65 REAL(wp), POINTER , DIMENSION(:,:) :: zflu, zflv, zdiv 62 66 CHARACTER(lc) :: charout ! local character 63 67 REAL(wp), PARAMETER :: zrelax = 0.5_wp ! relaxation constant for iterative procedure … … 65 69 INTEGER , PARAMETER :: its = 100 ! Maximum number of iteration 66 70 !!------------------------------------------------------------------- 71 TYPE(arrayptr) , ALLOCATABLE, DIMENSION(:) :: pt2d_array, zrlx_array 72 CHARACTER(len=1) , ALLOCATABLE, DIMENSION(:) :: type_array ! define the nature of ptab array grid-points 73 ! ! = T , U , V , F , W and I points 74 REAL(wp) , ALLOCATABLE, DIMENSION(:) :: psgn_array ! =-1 the sign change across the north fold boundary 75 76 !!--------------------------------------------------------------------- 77 78 ! !== Initialisation ==! 79 ! +1 open water diffusion 80 isize = jpl*(ihdf_vars+nlay_i)+1 81 ALLOCATE( zconv (isize) ) 82 ALLOCATE( pt2d_array(isize) , zrlx_array(isize) ) 83 ALLOCATE( type_array(isize) ) 84 ALLOCATE( psgn_array(isize) ) 67 85 68 CALL wrk_alloc( jpi, jpj, zrlx, zflu, zflv, zdiv0, zdiv, ztab0 ) 69 70 ! !== Initialisation ==! 86 CALL wrk_alloc( jpi, jpj, isize, zrlx, zdiv0, ztab0 ) 87 CALL wrk_alloc( jpi, jpj, zflu, zflv, zdiv ) 88 89 DO jk= 1 , isize 90 pt2d_array(jk)%pt2d=>ptab(:,:,jk) 91 zrlx_array(jk)%pt2d=>zrlx(:,:,jk) 92 type_array(jk)='T' 93 psgn_array(jk)=1. 94 END DO 95 71 96 ! 72 97 IF( linit ) THEN ! Metric coefficient (compute at the first call and saved in efact) … … 74 99 IF( lk_mpp ) CALL mpp_sum( ierr ) 75 100 IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'lim_hdf : unable to allocate arrays' ) 76 DO jj = 2, jpjm1 101 DO jj = 2, jpjm1 77 102 DO ji = fs_2 , fs_jpim1 ! vector opt. 78 103 efact(ji,jj) = ( e2u(ji,jj) + e2u(ji-1,jj) + e1v(ji,jj) + e1v(ji,jj-1) ) * r1_e12t(ji,jj) … … 83 108 ! ! Time integration parameters 84 109 ! 85 ztab0(:, : ) = ptab(:,:) ! Arrays initialization 86 zdiv0(:, 1 ) = 0._wp 87 zdiv0(:,jpj) = 0._wp 88 zflu (jpi,:) = 0._wp 89 zflv (jpi,:) = 0._wp 90 zdiv0(1, :) = 0._wp 91 zdiv0(jpi,:) = 0._wp 110 zflu (jpi,: ) = 0._wp 111 zflv (jpi,: ) = 0._wp 112 113 DO jk=1 , isize 114 ztab0(:, : , jk ) = ptab(:,:,jk) ! Arrays initialization 115 zdiv0(:, 1 , jk ) = 0._wp 116 zdiv0(:,jpj, jk ) = 0._wp 117 zdiv0(1, :, jk ) = 0._wp 118 zdiv0(jpi,:, jk ) = 0._wp 119 END DO 92 120 93 121 zconv = 1._wp !== horizontal diffusion using a Crant-Nicholson scheme ==! 94 122 iter = 0 95 123 ! 96 DO WHILE( zconv> ( 2._wp * 1.e-04 ) .AND. iter <= its ) ! Sub-time step loop124 DO WHILE( MAXVAL(zconv(:)) > ( 2._wp * 1.e-04 ) .AND. iter <= its ) ! Sub-time step loop 97 125 ! 98 126 iter = iter + 1 ! incrementation of the sub-time step number 99 127 ! 128 DO jk = 1 , isize 129 jl = (jk-1) /( ihdf_vars+nlay_i)+1 130 IF (zconv(jk) > ( 2._wp * 1.e-04 )) THEN 131 DO jj = 1, jpjm1 ! diffusive fluxes in U- and V- direction 132 DO ji = 1 , fs_jpim1 ! vector opt. 133 zflu(ji,jj) = pahu3D(ji,jj,jl) * e2u(ji,jj) * r1_e1u(ji,jj) * ( ptab(ji+1,jj,jk) - ptab(ji,jj,jk) ) 134 zflv(ji,jj) = pahv3D(ji,jj,jl) * e1v(ji,jj) * r1_e2v(ji,jj) * ( ptab(ji,jj+1,jk) - ptab(ji,jj,jk) ) 135 END DO 136 END DO 137 ! 138 DO jj= 2, jpjm1 ! diffusive trend : divergence of the fluxes 139 DO ji = fs_2 , fs_jpim1 ! vector opt. 140 zdiv(ji,jj) = ( zflu(ji,jj) - zflu(ji-1,jj) + zflv(ji,jj) - zflv(ji,jj-1) ) * r1_e12t(ji,jj) 141 END DO 142 END DO 143 ! 144 IF( iter == 1 ) zdiv0(:,:,jk) = zdiv(:,:) ! save the 1st evaluation of the diffusive trend in zdiv0 145 ! 146 DO jj = 2, jpjm1 ! iterative evaluation 147 DO ji = fs_2 , fs_jpim1 ! vector opt. 148 zrlxint = ( ztab0(ji,jj,jk) & 149 & + rdt_ice * ( zalfa * ( zdiv(ji,jj) + efact(ji,jj) * ptab(ji,jj,jk) ) & 150 & + ( 1.0 - zalfa ) * zdiv0(ji,jj,jk) ) & 151 & ) / ( 1.0 + zalfa * rdt_ice * efact(ji,jj) ) 152 zrlx(ji,jj,jk) = ptab(ji,jj,jk) + zrelax * ( zrlxint - ptab(ji,jj,jk) ) 153 END DO 154 END DO 155 END IF 156 157 END DO 158 159 CALL lbc_lnk_multi( zrlx_array, type_array , psgn_array , isize ) ! Multiple interchange of all the variables 160 ! 161 162 IF ( MOD( iter-1 , nn_convfrq ) == 0 ) THEN !Convergence test every nn_convfrq iterations (perf. optimization ) 163 DO jk=1,isize 164 zconv(jk) = 0._wp ! convergence test 165 DO jj = 2, jpjm1 166 DO ji = fs_2, fs_jpim1 167 zconv(jk) = MAX( zconv(jk), ABS( zrlx(ji,jj,jk) - ptab(ji,jj,jk) ) ) 168 END DO 169 END DO 170 END DO 171 IF( lk_mpp ) CALL mpp_max_multiple( zconv , isize ) ! max over the global domain for all the variables 172 ENDIF 173 ! 174 DO jk=1,isize 175 ptab(:,:,jk) = zrlx(:,:,jk) 176 END DO 177 ! 178 END DO ! end of sub-time step loop 179 180 ! ----------------------- 181 !!! final step (clem) !!! 182 DO jk = 1, isize 183 jl = (jk-1) /( ihdf_vars+nlay_i)+1 100 184 DO jj = 1, jpjm1 ! diffusive fluxes in U- and V- direction 101 185 DO ji = 1 , fs_jpim1 ! vector opt. 102 zflu(ji,jj) = pahu (ji,jj) * e2u(ji,jj) * r1_e1u(ji,jj) * ( ptab(ji+1,jj) - ptab(ji,jj) )103 zflv(ji,jj) = pahv (ji,jj) * e1v(ji,jj) * r1_e2v(ji,jj) * ( ptab(ji,jj+1) - ptab(ji,jj) )186 zflu(ji,jj) = pahu3D(ji,jj,jl) * e2u(ji,jj) * r1_e1u(ji,jj) * ( ptab(ji+1,jj,jk) - ptab(ji,jj,jk) ) 187 zflv(ji,jj) = pahv3D(ji,jj,jl) * e1v(ji,jj) * r1_e2v(ji,jj) * ( ptab(ji,jj+1,jk) - ptab(ji,jj,jk) ) 104 188 END DO 105 189 END DO … … 108 192 DO ji = fs_2 , fs_jpim1 ! vector opt. 109 193 zdiv(ji,jj) = ( zflu(ji,jj) - zflu(ji-1,jj) + zflv(ji,jj) - zflv(ji,jj-1) ) * r1_e12t(ji,jj) 110 END DO 111 END DO 112 ! 113 IF( iter == 1 ) zdiv0(:,:) = zdiv(:,:) ! save the 1st evaluation of the diffusive trend in zdiv0 114 ! 115 DO jj = 2, jpjm1 ! iterative evaluation 116 DO ji = fs_2 , fs_jpim1 ! vector opt. 117 zrlxint = ( ztab0(ji,jj) & 118 & + rdt_ice * ( zalfa * ( zdiv(ji,jj) + efact(ji,jj) * ptab(ji,jj) ) & 119 & + ( 1.0 - zalfa ) * zdiv0(ji,jj) ) & 120 & ) / ( 1.0 + zalfa * rdt_ice * efact(ji,jj) ) 121 zrlx(ji,jj) = ptab(ji,jj) + zrelax * ( zrlxint - ptab(ji,jj) ) 122 END DO 123 END DO 124 CALL lbc_lnk( zrlx, 'T', 1. ) ! lateral boundary condition 125 ! 126 IF ( MOD( iter, nn_convfrq ) == 0 ) THEN ! convergence test every nn_convfrq iterations (perf. optimization) 127 zconv = 0._wp 128 DO jj = 2, jpjm1 129 DO ji = fs_2, fs_jpim1 130 zconv = MAX( zconv, ABS( zrlx(ji,jj) - ptab(ji,jj) ) ) 131 END DO 132 END DO 133 IF( lk_mpp ) CALL mpp_max( zconv ) ! max over the global domain 134 ENDIF 135 ! 136 ptab(:,:) = zrlx(:,:) 137 ! 138 END DO ! end of sub-time step loop 139 140 ! ----------------------- 141 !!! final step (clem) !!! 142 DO jj = 1, jpjm1 ! diffusive fluxes in U- and V- direction 143 DO ji = 1 , fs_jpim1 ! vector opt. 144 zflu(ji,jj) = pahu(ji,jj) * e2u(ji,jj) * r1_e1u(ji,jj) * ( ptab(ji+1,jj) - ptab(ji,jj) ) 145 zflv(ji,jj) = pahv(ji,jj) * e1v(ji,jj) * r1_e2v(ji,jj) * ( ptab(ji,jj+1) - ptab(ji,jj) ) 194 ptab(ji,jj,jk) = ztab0(ji,jj,jk) + 0.5 * ( zdiv(ji,jj) + zdiv0(ji,jj,jk) ) 195 END DO 146 196 END DO 147 197 END DO 148 ! 149 DO jj= 2, jpjm1 ! diffusive trend : divergence of the fluxes 150 DO ji = fs_2 , fs_jpim1 ! vector opt. 151 zdiv(ji,jj) = ( zflu(ji,jj) - zflu(ji-1,jj) + zflv(ji,jj) - zflv(ji,jj-1) ) * r1_e12t(ji,jj) 152 ptab(ji,jj) = ztab0(ji,jj) + 0.5 * ( zdiv(ji,jj) + zdiv0(ji,jj) ) 153 END DO 154 END DO 155 CALL lbc_lnk( ptab, 'T', 1. ) ! lateral boundary condition 198 199 CALL lbc_lnk_multi( pt2d_array, type_array , psgn_array , isize ) ! Multiple interchange of all the variables 200 156 201 !!! final step (clem) !!! 157 202 ! ----------------------- 158 203 159 204 IF(ln_ctl) THEN 160 zrlx(:,:) = ptab(:,:) - ztab0(:,:) 161 WRITE(charout,FMT="(' lim_hdf : zconv =',D23.16, ' iter =',I4,2X)") zconv, iter 162 CALL prt_ctl( tab2d_1=zrlx, clinfo1=charout ) 163 ENDIF 164 ! 165 CALL wrk_dealloc( jpi, jpj, zrlx, zflu, zflv, zdiv0, zdiv, ztab0 ) 205 DO jk = 1 , isize 206 zrlx(:,:,jk) = ptab(:,:,jk) - ztab0(:,:,jk) 207 WRITE(charout,FMT="(' lim_hdf : zconv =',D23.16, ' iter =',I4,2X)") zconv, iter 208 CALL prt_ctl( tab2d_1=zrlx(:,:,jk), clinfo1=charout ) 209 END DO 210 ENDIF 211 ! 212 CALL wrk_dealloc( jpi, jpj, isize, zrlx, zdiv0, ztab0 ) 213 CALL wrk_dealloc( jpi, jpj, zflu, zflv, zdiv ) 214 215 DEALLOCATE( zconv ) 216 DEALLOCATE( pt2d_array , zrlx_array ) 217 DEALLOCATE( type_array ) 218 DEALLOCATE( psgn_array ) 166 219 ! 167 220 END SUBROUTINE lim_hdf 221 168 222 169 223 … … 179 233 !!------------------------------------------------------------------- 180 234 INTEGER :: ios ! Local integer output status for namelist read 181 NAMELIST/namicehdf/ nn_convfrq 235 NAMELIST/namicehdf/ nn_convfrq 182 236 !!------------------------------------------------------------------- 183 237 ! … … 212 266 !!====================================================================== 213 267 END MODULE limhdf 268
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