[3] | 1 | MODULE dynzad |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE dynzad *** |
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| 4 | !! Ocean dynamics : vertical advection trend |
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| 5 | !!====================================================================== |
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[2715] | 6 | !! History : OPA ! 1991-01 (G. Madec) Original code |
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| 7 | !! NEMO 0.5 ! 2002-07 (G. Madec) Free form, F90 |
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[503] | 8 | !!---------------------------------------------------------------------- |
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[3] | 9 | |
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| 10 | !!---------------------------------------------------------------------- |
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[503] | 11 | !! dyn_zad : vertical advection momentum trend |
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[3] | 12 | !!---------------------------------------------------------------------- |
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[503] | 13 | USE oce ! ocean dynamics and tracers |
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| 14 | USE dom_oce ! ocean space and time domain |
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[888] | 15 | USE sbc_oce ! surface boundary condition: ocean |
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[4990] | 16 | USE trd_oce ! trends: ocean variables |
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| 17 | USE trddyn ! trend manager: dynamics |
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| 18 | ! |
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[719] | 19 | USE in_out_manager ! I/O manager |
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[4990] | 20 | USE lib_mpp ! MPP library |
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[503] | 21 | USE prtctl ! Print control |
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[4990] | 22 | USE timing ! Timing |
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[3] | 23 | |
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| 24 | IMPLICIT NONE |
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| 25 | PRIVATE |
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| 26 | |
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[4990] | 27 | PUBLIC dyn_zad ! routine called by dynadv.F90 |
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[3] | 28 | |
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| 29 | !! * Substitutions |
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| 30 | # include "vectopt_loop_substitute.h90" |
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| 31 | !!---------------------------------------------------------------------- |
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[9598] | 32 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[888] | 33 | !! $Id$ |
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[10068] | 34 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3] | 35 | !!---------------------------------------------------------------------- |
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| 36 | CONTAINS |
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| 37 | |
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| 38 | SUBROUTINE dyn_zad ( kt ) |
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| 39 | !!---------------------------------------------------------------------- |
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| 40 | !! *** ROUTINE dynzad *** |
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| 41 | !! |
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| 42 | !! ** Purpose : Compute the now vertical momentum advection trend and |
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| 43 | !! add it to the general trend of momentum equation. |
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| 44 | !! |
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| 45 | !! ** Method : The now vertical advection of momentum is given by: |
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[5836] | 46 | !! w dz(u) = ua + 1/(e1e2u*e3u) mk+1[ mi(e1e2t*wn) dk(un) ] |
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| 47 | !! w dz(v) = va + 1/(e1e2v*e3v) mk+1[ mj(e1e2t*wn) dk(vn) ] |
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[3] | 48 | !! Add this trend to the general trend (ua,va): |
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| 49 | !! (ua,va) = (ua,va) + w dz(u,v) |
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| 50 | !! |
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| 51 | !! ** Action : - Update (ua,va) with the vert. momentum adv. trends |
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[4990] | 52 | !! - Send the trends to trddyn for diagnostics (l_trddyn=T) |
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[3294] | 53 | !!---------------------------------------------------------------------- |
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[503] | 54 | INTEGER, INTENT(in) :: kt ! ocean time-step inedx |
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[2715] | 55 | ! |
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[9019] | 56 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 57 | REAL(wp) :: zua, zva ! local scalars |
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| 58 | REAL(wp), DIMENSION(jpi,jpj) :: zww |
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| 59 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zwuw, zwvw |
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| 60 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: ztrdu, ztrdv |
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[3] | 61 | !!---------------------------------------------------------------------- |
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[3294] | 62 | ! |
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[9019] | 63 | IF( ln_timing ) CALL timing_start('dyn_zad') |
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[3294] | 64 | ! |
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[3] | 65 | IF( kt == nit000 ) THEN |
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[9019] | 66 | IF(lwp) WRITE(numout,*) |
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| 67 | IF(lwp) WRITE(numout,*) 'dyn_zad : 2nd order vertical advection scheme' |
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[3] | 68 | ENDIF |
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[216] | 69 | |
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[503] | 70 | IF( l_trddyn ) THEN ! Save ua and va trends |
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[9019] | 71 | ALLOCATE( ztrdu(jpi,jpj,jpk) , ztrdv(jpi,jpj,jpk) ) |
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[7753] | 72 | ztrdu(:,:,:) = ua(:,:,:) |
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| 73 | ztrdv(:,:,:) = va(:,:,:) |
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[216] | 74 | ENDIF |
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[3] | 75 | |
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[503] | 76 | DO jk = 2, jpkm1 ! Vertical momentum advection at level w and u- and v- vertical |
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| 77 | DO jj = 2, jpj ! vertical fluxes |
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| 78 | DO ji = fs_2, jpi ! vector opt. |
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[5836] | 79 | zww(ji,jj) = 0.25_wp * e1e2t(ji,jj) * wn(ji,jj,jk) |
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[3] | 80 | END DO |
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| 81 | END DO |
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[503] | 82 | DO jj = 2, jpjm1 ! vertical momentum advection at w-point |
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| 83 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[6140] | 84 | zwuw(ji,jj,jk) = ( zww(ji+1,jj ) + zww(ji,jj) ) * ( un(ji,jj,jk-1) - un(ji,jj,jk) ) |
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| 85 | zwvw(ji,jj,jk) = ( zww(ji ,jj+1) + zww(ji,jj) ) * ( vn(ji,jj,jk-1) - vn(ji,jj,jk) ) |
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[3] | 86 | END DO |
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| 87 | END DO |
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| 88 | END DO |
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[5120] | 89 | ! |
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| 90 | ! Surface and bottom advective fluxes set to zero |
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[9965] | 91 | DO jj = 2, jpjm1 |
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| 92 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 93 | zwuw(ji,jj, 1 ) = 0._wp |
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| 94 | zwvw(ji,jj, 1 ) = 0._wp |
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| 95 | zwuw(ji,jj,jpk) = 0._wp |
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| 96 | zwvw(ji,jj,jpk) = 0._wp |
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| 97 | END DO |
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| 98 | END DO |
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| 99 | ! |
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[503] | 100 | DO jk = 1, jpkm1 ! Vertical momentum advection at u- and v-points |
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[3] | 101 | DO jj = 2, jpjm1 |
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[503] | 102 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[9019] | 103 | ua(ji,jj,jk) = ua(ji,jj,jk) - ( zwuw(ji,jj,jk) + zwuw(ji,jj,jk+1) ) * r1_e1e2u(ji,jj) / e3u_n(ji,jj,jk) |
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| 104 | va(ji,jj,jk) = va(ji,jj,jk) - ( zwvw(ji,jj,jk) + zwvw(ji,jj,jk+1) ) * r1_e1e2v(ji,jj) / e3v_n(ji,jj,jk) |
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[3] | 105 | END DO |
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| 106 | END DO |
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| 107 | END DO |
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| 108 | |
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[503] | 109 | IF( l_trddyn ) THEN ! save the vertical advection trends for diagnostic |
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[7753] | 110 | ztrdu(:,:,:) = ua(:,:,:) - ztrdu(:,:,:) |
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| 111 | ztrdv(:,:,:) = va(:,:,:) - ztrdv(:,:,:) |
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[4990] | 112 | CALL trd_dyn( ztrdu, ztrdv, jpdyn_zad, kt ) |
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[9019] | 113 | DEALLOCATE( ztrdu, ztrdv ) |
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[216] | 114 | ENDIF |
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[503] | 115 | ! ! Control print |
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| 116 | IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' zad - Ua: ', mask1=umask, & |
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| 117 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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| 118 | ! |
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[9019] | 119 | IF( ln_timing ) CALL timing_stop('dyn_zad') |
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[2715] | 120 | ! |
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[3] | 121 | END SUBROUTINE dyn_zad |
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| 122 | |
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[503] | 123 | !!====================================================================== |
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[3] | 124 | END MODULE dynzad |
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