[941] | 1 | MODULE trcldf_lap |
---|
[1175] | 2 | !!====================================================================== |
---|
[941] | 3 | !! *** MODULE trcldf_lap *** |
---|
| 4 | !! Ocean passive tracers: horizontal component of the lateral tracer mixing trend |
---|
[1175] | 5 | !!====================================================================== |
---|
| 6 | !! History : 1.0 ! 87-06 (P. Andrich, D. L Hostis) Original code |
---|
| 7 | !! ! 91-11 (G. Madec) |
---|
| 8 | !! ! 95-02 (M. Levy) passive tracers |
---|
| 9 | !! ! 95-11 (G. Madec) suppress volumetric scale factors |
---|
| 10 | !! ! 96-01 (G. Madec) statement function for e3 |
---|
| 11 | !! 8.5 ! 02-06 (G. Madec) F90: Free form and module |
---|
| 12 | !! 9.0 ! 04-03 (C. Ethe) passive tracer |
---|
| 13 | !! ! 07-02 (C. Deltel) Diagnose ML trends for passive tracers |
---|
| 14 | !!---------------------------------------------------------------------- |
---|
[941] | 15 | #if defined key_top |
---|
| 16 | !!---------------------------------------------------------------------- |
---|
| 17 | !! trc_ldf_lap : update the tracer trend with the horizontal diffusion |
---|
| 18 | !! using a iso-level harmonic (laplacien) operator. |
---|
| 19 | !!---------------------------------------------------------------------- |
---|
| 20 | USE oce_trc ! ocean dynamics and active tracers variables |
---|
[1119] | 21 | USE trp_trc ! ocean passive tracers variables |
---|
[941] | 22 | USE prtctl_trc ! Print control for debbuging |
---|
[1175] | 23 | USE trdmld_trc |
---|
| 24 | USE trdmld_trc_oce |
---|
[941] | 25 | |
---|
| 26 | IMPLICIT NONE |
---|
| 27 | PRIVATE |
---|
| 28 | |
---|
| 29 | !! * Routine accessibility |
---|
| 30 | PUBLIC trc_ldf_lap ! routine called by step.F90 |
---|
| 31 | |
---|
| 32 | !! * Substitutions |
---|
| 33 | # include "top_substitute.h90" |
---|
| 34 | !!---------------------------------------------------------------------- |
---|
| 35 | !! TOP 1.0 , LOCEAN-IPSL (2005) |
---|
[1175] | 36 | !! $Header: /home/opalod/NEMOCVSROOT/NEMO/TOP_SRC/TRP/trcldf_lap.F90,v 1.10 2006/09/12 11:10:14 opalod Exp $ |
---|
| 37 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
---|
[941] | 38 | !!---------------------------------------------------------------------- |
---|
| 39 | |
---|
| 40 | CONTAINS |
---|
| 41 | |
---|
| 42 | SUBROUTINE trc_ldf_lap( kt ) |
---|
| 43 | !!---------------------------------------------------------------------- |
---|
| 44 | !! *** ROUTINE trc_ldf_lap *** |
---|
| 45 | !! |
---|
| 46 | !! ** Purpose : Compute the before horizontal tracer diffusive |
---|
| 47 | !! trend and add it to the general trend of tracer equation. |
---|
| 48 | !! |
---|
| 49 | !! ** Method : Second order diffusive operator evaluated using before |
---|
| 50 | !! fields (forward time scheme). The horizontal diffusive trends of |
---|
| 51 | !! the passive tracer is given by: |
---|
| 52 | !! * s-coordinate, the vertical scale |
---|
| 53 | !! factors e3. are inside the derivatives: |
---|
| 54 | !! difft = 1/(e1t*e2t*e3t) { di-1[ aht e2u*e3u/e1u di(trb) ] |
---|
| 55 | !! + dj-1[ aht e1v*e3v/e2v dj(trb) ] } |
---|
| 56 | !! * z-coordinate (default key), e3t=e3u=e3v, the trend becomes: |
---|
| 57 | !! difft = 1/(e1t*e2t) { di-1[ aht e2u/e1u di(trb) ] |
---|
| 58 | !! + dj-1[ aht e1v/e2v dj(trb) ] } |
---|
| 59 | !! Add this trend to the general tracer trend tra : |
---|
| 60 | !! tra = tra + difft |
---|
| 61 | !! |
---|
| 62 | !! ** Action : - Update tra arrays with the before iso-level |
---|
| 63 | !! harmonic mixing trend. |
---|
[1175] | 64 | !! - Save the trends ('key_trdmld_trc') |
---|
[941] | 65 | !!---------------------------------------------------------------------- |
---|
| 66 | USE oce_trc , ztu => ua, & ! use ua as workspace |
---|
| 67 | & ztv => va ! use va as workspace |
---|
| 68 | |
---|
| 69 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
---|
[1175] | 70 | |
---|
[941] | 71 | !! * Local save |
---|
| 72 | REAL(wp), DIMENSION(jpi,jpj), SAVE :: & |
---|
| 73 | ze1ur, ze2vr, zbtr2 ! scale factor coefficients |
---|
| 74 | |
---|
[1175] | 75 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
---|
[941] | 76 | REAL(wp) :: & |
---|
[1175] | 77 | zabe1, zabe2, zbtr ! temporary scalars |
---|
[941] | 78 | |
---|
| 79 | REAL(wp) :: & |
---|
[1264] | 80 | ztrax, ztray ! workspace |
---|
[941] | 81 | CHARACTER (len=22) :: charout |
---|
[1175] | 82 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: ztrtrd |
---|
[941] | 83 | !!---------------------------------------------------------------------- |
---|
| 84 | |
---|
| 85 | IF( kt == nittrc000 ) THEN |
---|
| 86 | IF(lwp) WRITE(numout,*) |
---|
| 87 | IF(lwp) WRITE(numout,*) 'trc_ldf_lap : iso-level laplacian diffusion' |
---|
| 88 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ ' |
---|
| 89 | ze1ur(:,:) = e2u(:,:) / e1u(:,:) |
---|
| 90 | ze2vr(:,:) = e1v(:,:) / e2v(:,:) |
---|
| 91 | zbtr2(:,:) = 1. / ( e1t(:,:) * e2t(:,:) ) |
---|
| 92 | ENDIF |
---|
[1175] | 93 | |
---|
| 94 | IF( l_trdtrc ) THEN |
---|
| 95 | ! STOP 'trcldf_lap: this was never validated, please comment this line to proceed...' |
---|
| 96 | ENDIF |
---|
| 97 | |
---|
| 98 | IF( l_trdtrc ) ALLOCATE( ztrtrd(jpi,jpj,jpk) ) |
---|
| 99 | |
---|
| 100 | ! ! =========== |
---|
| 101 | DO jn = 1, jptra ! tracer loop |
---|
| 102 | ! ! =========== |
---|
| 103 | IF( l_trdtrc ) ztrtrd(:,:,:) = tra(:,:,:,jn) |
---|
[941] | 104 | |
---|
| 105 | ! ! ============= |
---|
| 106 | DO jk = 1, jpkm1 ! Vertical slab |
---|
| 107 | ! ! ============= |
---|
| 108 | ! 1. First derivative (gradient) |
---|
[1175] | 109 | ! ------------------------------ |
---|
[941] | 110 | DO jj = 1, jpjm1 |
---|
| 111 | DO ji = 1, fs_jpim1 ! vector opt. |
---|
| 112 | IF ( ln_sco ) THEN |
---|
| 113 | zabe1 = fsahtru(ji,jj,jk) * umask(ji,jj,jk) * ze1ur(ji,jj) * fse3u(ji,jj,jk) |
---|
| 114 | zabe2 = fsahtrv(ji,jj,jk) * vmask(ji,jj,jk) * ze2vr(ji,jj) * fse3v(ji,jj,jk) |
---|
| 115 | ELSE |
---|
| 116 | zabe1 = fsahtru(ji,jj,jk) * umask(ji,jj,jk) * ze1ur(ji,jj) |
---|
| 117 | zabe2 = fsahtrv(ji,jj,jk) * vmask(ji,jj,jk) * ze2vr(ji,jj) |
---|
| 118 | ENDIF |
---|
| 119 | ztu(ji,jj,jk) = zabe1 * ( trb(ji+1,jj ,jk,jn) - trb(ji,jj,jk,jn) ) |
---|
| 120 | ztv(ji,jj,jk) = zabe2 * ( trb(ji ,jj+1,jk,jn) - trb(ji,jj,jk,jn) ) |
---|
| 121 | END DO |
---|
| 122 | END DO |
---|
| 123 | |
---|
| 124 | |
---|
| 125 | ! 2. Second derivative (divergence) |
---|
[1175] | 126 | ! --------------------------------- |
---|
[941] | 127 | DO jj = 2, jpjm1 |
---|
| 128 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 129 | IF ( ln_sco ) THEN |
---|
| 130 | zbtr = zbtr2(ji,jj) / fse3t(ji,jj,jk) |
---|
| 131 | ELSE |
---|
| 132 | zbtr = zbtr2(ji,jj) |
---|
| 133 | ENDIF |
---|
| 134 | ! horizontal diffusive trends |
---|
| 135 | ztrax = zbtr * ( ztu(ji,jj,jk) - ztu(ji-1,jj,jk) ) |
---|
| 136 | ztray = zbtr * ( ztv(ji,jj,jk) - ztv(ji,jj-1,jk) ) |
---|
| 137 | |
---|
| 138 | ! add it to the general tracer trends |
---|
| 139 | tra(ji,jj,jk,jn) = tra(ji,jj,jk,jn) + ztrax + ztray |
---|
| 140 | #if defined key_trc_diatrd |
---|
| 141 | ! save the horizontal diffusive trends |
---|
| 142 | IF (luttrd(jn)) trtrd(ji,jj,jk,ikeep(jn),4) = ztrax |
---|
| 143 | IF (luttrd(jn)) trtrd(ji,jj,jk,ikeep(jn),5) = ztray |
---|
| 144 | #endif |
---|
[1175] | 145 | |
---|
[941] | 146 | END DO |
---|
| 147 | END DO |
---|
| 148 | ! ! ============= |
---|
| 149 | END DO ! End of slab |
---|
| 150 | ! ! ============= |
---|
[1175] | 151 | IF( l_trdtrc ) THEN |
---|
| 152 | ztrtrd(:,:,:) = tra(:,:,:,jn) - ztrtrd(:,:,:) |
---|
| 153 | IF (luttrd(jn)) CALL trd_mod_trc( ztrtrd, jn, jptrc_trd_ldf, kt ) ! trends diags |
---|
| 154 | END IF |
---|
| 155 | ! ! =========== |
---|
| 156 | END DO ! tracer loop |
---|
| 157 | ! ! =========== |
---|
[941] | 158 | |
---|
[1175] | 159 | IF( l_trdtrc ) DEALLOCATE( ztrtrd ) |
---|
[941] | 160 | |
---|
[1175] | 161 | IF( ln_ctl ) THEN ! print mean trends (used for debugging) |
---|
[941] | 162 | WRITE(charout, FMT="('ldf - lap')") |
---|
[1175] | 163 | CALL prt_ctl_trc_info( charout ) |
---|
| 164 | CALL prt_ctl_trc( tab4d=tra, mask=tmask, clinfo=ctrcnm, clinfo2='trd' ) |
---|
[941] | 165 | ENDIF |
---|
| 166 | |
---|
| 167 | END SUBROUTINE trc_ldf_lap |
---|
| 168 | |
---|
| 169 | #else |
---|
| 170 | !!---------------------------------------------------------------------- |
---|
| 171 | !! Default option Empty module |
---|
| 172 | !!---------------------------------------------------------------------- |
---|
| 173 | CONTAINS |
---|
| 174 | SUBROUTINE trc_ldf_lap( kt ) |
---|
| 175 | INTEGER, INTENT(in) :: kt |
---|
| 176 | WRITE(*,*) 'trc_ldf_lap: You should not have seen this print! error?', kt |
---|
| 177 | END SUBROUTINE trc_ldf_lap |
---|
| 178 | #endif |
---|
| 179 | |
---|
| 180 | !!============================================================================== |
---|
| 181 | END MODULE trcldf_lap |
---|