[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 | !! 7.0 ! 1991-11 (G. Madec) |
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| 8 | !! 7.5 ! 1996-01 (G. Madec) statement function for e3 |
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| 9 | !! NEMO 0.5 ! 2002-07 (G. Madec) Free form, F90 |
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[503] | 10 | !!---------------------------------------------------------------------- |
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[3] | 11 | |
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| 12 | !!---------------------------------------------------------------------- |
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[503] | 13 | !! dyn_zad : vertical advection momentum trend |
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[3] | 14 | !!---------------------------------------------------------------------- |
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[503] | 15 | USE oce ! ocean dynamics and tracers |
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| 16 | USE dom_oce ! ocean space and time domain |
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[888] | 17 | USE sbc_oce ! surface boundary condition: ocean |
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| 18 | USE trdmod_oce ! ocean variables trends |
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| 19 | USE trdmod ! ocean dynamics trends |
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[719] | 20 | USE in_out_manager ! I/O manager |
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[2715] | 21 | USE lib_mpp ! MPP library |
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[503] | 22 | USE prtctl ! Print control |
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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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[503] | 27 | PUBLIC dyn_zad ! routine called by step.F90 |
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[3] | 28 | |
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| 29 | !! * Substitutions |
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| 30 | # include "domzgr_substitute.h90" |
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| 31 | # include "vectopt_loop_substitute.h90" |
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| 32 | !!---------------------------------------------------------------------- |
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[2528] | 33 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[888] | 34 | !! $Id$ |
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[2715] | 35 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 36 | !!---------------------------------------------------------------------- |
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| 37 | CONTAINS |
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| 38 | |
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| 39 | SUBROUTINE dyn_zad ( kt ) |
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| 40 | !!---------------------------------------------------------------------- |
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| 41 | !! *** ROUTINE dynzad *** |
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| 42 | !! |
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| 43 | !! ** Purpose : Compute the now vertical momentum advection trend and |
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| 44 | !! add it to the general trend of momentum equation. |
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| 45 | !! |
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| 46 | !! ** Method : The now vertical advection of momentum is given by: |
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| 47 | !! w dz(u) = ua + 1/(e1u*e2u*e3u) mk+1[ mi(e1t*e2t*wn) dk(un) ] |
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| 48 | !! w dz(v) = va + 1/(e1v*e2v*e3v) mk+1[ mj(e1t*e2t*wn) dk(vn) ] |
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| 49 | !! Add this trend to the general trend (ua,va): |
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| 50 | !! (ua,va) = (ua,va) + w dz(u,v) |
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| 51 | !! |
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| 52 | !! ** Action : - Update (ua,va) with the vert. momentum adv. trends |
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[503] | 53 | !! - Save the trends in (ztrdu,ztrdv) ('key_trddyn') |
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| 54 | !!---------------------------------------------------------------------- |
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[2715] | 55 | USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released |
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| 56 | USE wrk_nemo, ONLY: zww => wrk_2d_1 ! 2D workspace |
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| 57 | USE oce , ONLY: zwuw => ta , zwvw => sa ! (ta,sa) used as 3D workspace |
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| 58 | USE wrk_nemo, ONLY: ztrdu => wrk_3d_1 , ztrdv => wrk_3d_2 ! 3D workspace |
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| 59 | ! |
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[503] | 60 | INTEGER, INTENT(in) :: kt ! ocean time-step inedx |
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[2715] | 61 | ! |
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[503] | 62 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 63 | REAL(wp) :: zua, zva ! temporary scalars |
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[3] | 64 | !!---------------------------------------------------------------------- |
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| 65 | |
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[2715] | 66 | IF( wrk_in_use(2, 1) .OR. wrk_in_use(3, 1,2) ) THEN |
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| 67 | CALL ctl_stop('dyn_zad: requested workspace arrays unavailable') ; RETURN |
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| 68 | ENDIF |
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| 69 | |
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[3] | 70 | IF( kt == nit000 ) THEN |
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| 71 | IF(lwp)WRITE(numout,*) |
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| 72 | IF(lwp)WRITE(numout,*) 'dyn_zad : arakawa advection scheme' |
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| 73 | ENDIF |
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[216] | 74 | |
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[503] | 75 | IF( l_trddyn ) THEN ! Save ua and va trends |
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| 76 | ztrdu(:,:,:) = ua(:,:,:) |
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| 77 | ztrdv(:,:,:) = va(:,:,:) |
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[216] | 78 | ENDIF |
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[3] | 79 | |
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[503] | 80 | DO jk = 2, jpkm1 ! Vertical momentum advection at level w and u- and v- vertical |
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| 81 | DO jj = 2, jpj ! vertical fluxes |
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| 82 | DO ji = fs_2, jpi ! vector opt. |
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[3] | 83 | zww(ji,jj) = 0.25 * e1t(ji,jj) * e2t(ji,jj) * wn(ji,jj,jk) |
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| 84 | END DO |
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| 85 | END DO |
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[503] | 86 | DO jj = 2, jpjm1 ! vertical momentum advection at w-point |
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| 87 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[3] | 88 | zwuw(ji,jj,jk) = ( zww(ji+1,jj ) + zww(ji,jj) ) * ( un(ji,jj,jk-1)-un(ji,jj,jk) ) |
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| 89 | zwvw(ji,jj,jk) = ( zww(ji ,jj+1) + zww(ji,jj) ) * ( vn(ji,jj,jk-1)-vn(ji,jj,jk) ) |
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| 90 | END DO |
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| 91 | END DO |
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| 92 | END DO |
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[503] | 93 | DO jj = 2, jpjm1 ! Surface and bottom values set to zero |
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| 94 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[3] | 95 | zwuw(ji,jj, 1 ) = 0.e0 |
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| 96 | zwvw(ji,jj, 1 ) = 0.e0 |
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| 97 | zwuw(ji,jj,jpk) = 0.e0 |
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| 98 | zwvw(ji,jj,jpk) = 0.e0 |
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| 99 | END DO |
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| 100 | END DO |
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| 101 | |
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[503] | 102 | DO jk = 1, jpkm1 ! Vertical momentum advection at u- and v-points |
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[3] | 103 | DO jj = 2, jpjm1 |
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[503] | 104 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 105 | ! ! vertical momentum advective trends |
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[3] | 106 | zua = - ( zwuw(ji,jj,jk) + zwuw(ji,jj,jk+1) ) / ( e1u(ji,jj) * e2u(ji,jj) * fse3u(ji,jj,jk) ) |
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| 107 | zva = - ( zwvw(ji,jj,jk) + zwvw(ji,jj,jk+1) ) / ( e1v(ji,jj) * e2v(ji,jj) * fse3v(ji,jj,jk) ) |
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[503] | 108 | ! ! add the trends to the general momentum trends |
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[3] | 109 | ua(ji,jj,jk) = ua(ji,jj,jk) + zua |
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| 110 | va(ji,jj,jk) = va(ji,jj,jk) + zva |
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| 111 | END DO |
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| 112 | END DO |
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| 113 | END DO |
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| 114 | |
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[503] | 115 | IF( l_trddyn ) THEN ! save the vertical advection trends for diagnostic |
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| 116 | ztrdu(:,:,:) = ua(:,:,:) - ztrdu(:,:,:) |
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| 117 | ztrdv(:,:,:) = va(:,:,:) - ztrdv(:,:,:) |
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| 118 | CALL trd_mod(ztrdu, ztrdv, jpdyn_trd_zad, 'DYN', kt) |
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[216] | 119 | ENDIF |
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[503] | 120 | ! ! Control print |
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| 121 | IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' zad - Ua: ', mask1=umask, & |
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| 122 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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| 123 | ! |
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[2715] | 124 | IF( wrk_not_released(2, 1) .OR. & |
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| 125 | wrk_not_released(3, 1,2) ) CALL ctl_stop('dyn_zad: failed to release workspace arrays') |
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| 126 | ! |
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[3] | 127 | END SUBROUTINE dyn_zad |
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| 128 | |
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[503] | 129 | !!====================================================================== |
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[3] | 130 | END MODULE dynzad |
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