[4619] | 1 | MODULE trdken |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE trdken *** |
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| 4 | !! Ocean diagnostics: compute and output 3D kinetic energy trends |
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| 5 | !!===================================================================== |
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| 6 | !! History : 3.5 ! 2012-02 (G. Madec) original code |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! trd_ken : compute and output 3D Kinetic energy trends using IOM |
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| 11 | !! trd_ken_init : initialisation |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | USE oce ! ocean dynamics and tracers variables |
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| 14 | USE dom_oce ! ocean space and time domain variables |
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| 15 | USE zdf_oce ! ocean vertical physics variables |
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| 16 | USE trd_oce ! trends: ocean variables |
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| 17 | !!gm USE dynhpg ! hydrostatic pressure gradient |
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| 18 | USE zdfbfr ! bottom friction |
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| 19 | USE ldftra_oce ! ocean active tracers lateral physics |
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| 20 | USE sbc_oce ! surface boundary condition: ocean |
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| 21 | USE phycst ! physical constants |
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| 22 | USE trdvor ! ocean vorticity trends |
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| 23 | USE trdglo ! trends:global domain averaged |
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| 24 | USE trdmxl ! ocean active mixed layer tracers trends |
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| 25 | USE in_out_manager ! I/O manager |
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| 26 | USE iom ! I/O manager library |
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| 27 | USE lib_mpp ! MPP library |
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| 28 | USE wrk_nemo ! Memory allocation |
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| 29 | |
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| 30 | IMPLICIT NONE |
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| 31 | PRIVATE |
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| 32 | |
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| 33 | PUBLIC trd_ken ! called by trddyn module |
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| 34 | PUBLIC trd_ken_init ! called by trdini module |
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| 35 | |
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| 36 | INTEGER :: nkstp ! current time step |
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| 37 | |
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| 38 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: bu, bv ! volume of u- and v-boxes |
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| 39 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: r1_bt ! inverse of t-box volume |
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| 40 | |
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| 41 | !! * Substitutions |
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| 42 | # include "domzgr_substitute.h90" |
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| 43 | # include "vectopt_loop_substitute.h90" |
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| 44 | !!---------------------------------------------------------------------- |
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| 45 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[5215] | 46 | !! $Id$ |
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[4619] | 47 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 48 | !!---------------------------------------------------------------------- |
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| 49 | CONTAINS |
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| 50 | |
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| 51 | INTEGER FUNCTION trd_ken_alloc() |
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| 52 | !!--------------------------------------------------------------------- |
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| 53 | !! *** FUNCTION trd_ken_alloc *** |
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| 54 | !!--------------------------------------------------------------------- |
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| 55 | ALLOCATE( bu(jpi,jpj,jpk) , bv(jpi,jpj,jpk) , r1_bt(jpi,jpj,jpk) , STAT= trd_ken_alloc ) |
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| 56 | ! |
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| 57 | IF( lk_mpp ) CALL mpp_sum ( trd_ken_alloc ) |
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| 58 | IF( trd_ken_alloc /= 0 ) CALL ctl_warn('trd_ken_alloc: failed to allocate arrays') |
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| 59 | END FUNCTION trd_ken_alloc |
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| 60 | |
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| 61 | |
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| 62 | SUBROUTINE trd_ken( putrd, pvtrd, ktrd, kt ) |
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| 63 | !!--------------------------------------------------------------------- |
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| 64 | !! *** ROUTINE trd_ken *** |
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| 65 | !! |
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| 66 | !! ** Purpose : output 3D Kinetic Energy trends using IOM |
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| 67 | !! |
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| 68 | !! ** Method : - apply lbc to the input masked velocity trends |
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| 69 | !! - compute the associated KE trend: |
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| 70 | !! zke = 0.5 * ( mi-1[ un * putrd * bu ] + mj-1[ vn * pvtrd * bv] ) / bt |
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| 71 | !! where bu, bv, bt are the volume of u-, v- and t-boxes. |
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| 72 | !! - vertical diffusion case (jpdyn_zdf): |
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| 73 | !! diagnose separately the KE trend associated with wind stress |
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| 74 | !! - bottom friction case (jpdyn_bfr): |
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| 75 | !! explicit case (ln_bfrimp=F): bottom trend put in the 1st level |
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| 76 | !! of putrd, pvtrd |
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| 77 | ! |
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| 78 | ! |
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| 79 | !!---------------------------------------------------------------------- |
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| 80 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: putrd, pvtrd ! U and V masked trends |
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| 81 | INTEGER , INTENT(in ) :: ktrd ! trend index |
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| 82 | INTEGER , INTENT(in ) :: kt ! time step |
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| 83 | ! |
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| 84 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 85 | INTEGER :: ikbu , ikbv ! local integers |
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| 86 | INTEGER :: ikbum1, ikbvm1 ! - - |
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| 87 | REAL(wp), POINTER, DIMENSION(:,:) :: z2dx, z2dy, zke2d ! 2D workspace |
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| 88 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zke ! 3D workspace |
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| 89 | !!---------------------------------------------------------------------- |
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| 90 | ! |
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| 91 | CALL wrk_alloc( jpi, jpj, jpk, zke ) |
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| 92 | ! |
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| 93 | CALL lbc_lnk( putrd, 'U', -1. ) ; CALL lbc_lnk( pvtrd, 'V', -1. ) ! lateral boundary conditions |
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| 94 | ! |
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| 95 | IF ( lk_vvl .AND. kt /= nkstp ) THEN ! Variable volume: set box volume at the 1st call of kt time step |
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| 96 | nkstp = kt |
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| 97 | DO jk = 1, jpkm1 |
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| 98 | bu (:,:,jk) = e1u(:,:) * e2u(:,:) * fse3u_n(:,:,jk) |
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| 99 | bv (:,:,jk) = e1v(:,:) * e2v(:,:) * fse3v_n(:,:,jk) |
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| 100 | r1_bt(:,:,jk) = 1._wp / ( e1e2t(:,:) * fse3t_n(:,:,jk) ) * tmask(:,:,jk) |
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| 101 | END DO |
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| 102 | ENDIF |
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| 103 | ! |
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| 104 | zke(:,:,jpk) = 0._wp |
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| 105 | zke(1,:, : ) = 0._wp |
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| 106 | zke(:,1, : ) = 0._wp |
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| 107 | DO jk = 1, jpkm1 |
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| 108 | DO jj = 2, jpj |
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| 109 | DO ji = 2, jpi |
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| 110 | zke(ji,jj,jk) = 0.5_wp * rau0 *( un(ji ,jj,jk) * putrd(ji ,jj,jk) * bu(ji ,jj,jk) & |
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| 111 | & + un(ji-1,jj,jk) * putrd(ji-1,jj,jk) * bu(ji-1,jj,jk) & |
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| 112 | & + vn(ji,jj ,jk) * pvtrd(ji,jj ,jk) * bv(ji,jj ,jk) & |
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| 113 | & + vn(ji,jj-1,jk) * pvtrd(ji,jj-1,jk) * bv(ji,jj-1,jk) ) * r1_bt(ji,jj,jk) |
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| 114 | END DO |
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| 115 | END DO |
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| 116 | END DO |
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| 117 | ! |
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| 118 | SELECT CASE( ktrd ) |
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[6093] | 119 | CASE( jpdyn_hpg ) ; CALL iom_put( "ketrd_hpg", zke ) ! hydrostatic pressure gradient |
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| 120 | CASE( jpdyn_spg ) ; CALL iom_put( "ketrd_spg", zke ) ! surface pressure gradient |
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| 121 | CASE( jpdyn_spgexp ); CALL iom_put( "ketrd_spgexp", zke ) ! surface pressure gradient (explicit) |
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| 122 | CASE( jpdyn_spgflt ); CALL iom_put( "ketrd_spgflt", zke ) ! surface pressure gradient (filter) |
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| 123 | CASE( jpdyn_pvo ) ; CALL iom_put( "ketrd_pvo", zke ) ! planetary vorticity |
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| 124 | CASE( jpdyn_rvo ) ; CALL iom_put( "ketrd_rvo", zke ) ! relative vorticity (or metric term) |
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| 125 | CASE( jpdyn_keg ) ; CALL iom_put( "ketrd_keg", zke ) ! Kinetic Energy gradient (or had) |
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| 126 | CASE( jpdyn_zad ) ; CALL iom_put( "ketrd_zad", zke ) ! vertical advection |
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| 127 | CASE( jpdyn_ldf ) ; CALL iom_put( "ketrd_ldf", zke ) ! lateral diffusion |
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| 128 | CASE( jpdyn_zdf ) ; CALL iom_put( "ketrd_zdf", zke ) ! vertical diffusion |
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[4619] | 129 | ! ! wind stress trends |
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[6093] | 130 | CALL wrk_alloc( jpi, jpj, z2dx, z2dy, zke2d ) |
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| 131 | z2dx(:,:) = un(:,:,1) * ( utau_b(:,:) + utau(:,:) ) * e1u(:,:) * e2u(:,:) * umask(:,:,1) |
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| 132 | z2dy(:,:) = vn(:,:,1) * ( vtau_b(:,:) + vtau(:,:) ) * e1v(:,:) * e2v(:,:) * vmask(:,:,1) |
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| 133 | zke2d(1,:) = 0._wp ; zke2d(:,1) = 0._wp |
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| 134 | DO jj = 2, jpj |
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| 135 | DO ji = 2, jpi |
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| 136 | zke2d(ji,jj) = 0.5_wp * ( z2dx(ji,jj) + z2dx(ji-1,jj) & |
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| 137 | & + z2dy(ji,jj) + z2dy(ji,jj-1) ) * r1_bt(ji,jj,1) |
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| 138 | END DO |
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| 139 | END DO |
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| 140 | CALL iom_put( "ketrd_tau", zke2d ) |
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| 141 | CALL wrk_dealloc( jpi, jpj , z2dx, z2dy, zke2d ) |
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| 142 | CASE( jpdyn_bfr ) ; CALL iom_put( "ketrd_bfr", zke ) ! bottom friction (explicit case) |
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[4619] | 143 | !!gm TO BE DONE properly |
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| 144 | !!gm only valid if ln_bfrimp=F otherwise the bottom stress as to be recomputed at the end of the computation.... |
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| 145 | ! IF(.NOT. ln_bfrimp) THEN |
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| 146 | ! DO jj = 1, jpj ! |
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| 147 | ! DO ji = 1, jpi |
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| 148 | ! ikbu = mbku(ji,jj) ! deepest ocean u- & v-levels |
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| 149 | ! ikbv = mbkv(ji,jj) |
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| 150 | ! z2dx(ji,jj) = un(ji,jj,ikbu) * bfrua(ji,jj) * un(ji,jj,ikbu) |
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| 151 | ! z2dy(ji,jj) = vn(ji,jj,ikbu) * bfrva(ji,jj) * vn(ji,jj,ikbv) |
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| 152 | ! END DO |
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| 153 | ! END DO |
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| 154 | ! zke2d(1,:) = 0._wp ; zke2d(:,1) = 0._wp |
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| 155 | ! DO jj = 2, jpj |
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| 156 | ! DO ji = 2, jpi |
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| 157 | ! zke2d(ji,jj) = 0.5_wp * ( z2dx(ji,jj) + z2dx(ji-1,jj) & |
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| 158 | ! & + z2dy(ji,jj) + z2dy(ji,jj-1) ) * r1_bt(ji,jj, BEURK!!! |
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| 159 | ! END DO |
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| 160 | ! END DO |
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| 161 | ! CALL iom_put( "ketrd_bfr", zke2d ) ! bottom friction (explicit case) |
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| 162 | ! ENDIF |
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| 163 | !!gm end |
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[6093] | 164 | CASE( jpdyn_atf ) ; CALL iom_put( "ketrd_atf", zke ) ! asselin filter trends |
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[4619] | 165 | !! a faire !!!! idee changer dynnxt pour avoir un appel a jpdyn_bfr avant le swap !!! |
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| 166 | !! reflechir a une possible sauvegarde du "vrai" un,vn pour le calcul de atf.... |
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| 167 | ! |
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| 168 | ! IF( ln_bfrimp ) THEN ! bottom friction (implicit case) |
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| 169 | ! DO jj = 1, jpj ! after velocity known (now filed at this stage) |
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| 170 | ! DO ji = 1, jpi |
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| 171 | ! ikbu = mbku(ji,jj) ! deepest ocean u- & v-levels |
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| 172 | ! ikbv = mbkv(ji,jj) |
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| 173 | ! z2dx(ji,jj) = un(ji,jj,ikbu) * bfrua(ji,jj) * un(ji,jj,ikbu) / fse3u(ji,jj,ikbu) |
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| 174 | ! z2dy(ji,jj) = un(ji,jj,ikbu) * bfrva(ji,jj) * vn(ji,jj,ikbv) / fse3v(ji,jj,ikbv) |
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| 175 | ! END DO |
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| 176 | ! END DO |
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| 177 | ! zke2d(1,:) = 0._wp ; zke2d(:,1) = 0._wp |
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| 178 | ! DO jj = 2, jpj |
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| 179 | ! DO ji = 2, jpi |
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| 180 | ! zke2d(ji,jj) = 0.5_wp * ( z2dx(ji,jj) + z2dx(ji-1,jj) & |
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| 181 | ! & + z2dy(ji,jj) + z2dy(ji,jj-1) ) |
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| 182 | ! END DO |
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| 183 | ! END DO |
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| 184 | ! CALL iom_put( "ketrd_bfri", zke2d ) |
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| 185 | ! ENDIF |
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[6093] | 186 | CASE( jpdyn_ken ) ; ! kinetic energy |
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| 187 | ! called in dynnxt.F90 before asselin time filter |
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| 188 | ! with putrd=ua and pvtrd=va |
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| 189 | zke(:,:,:) = 0.5_wp * zke(:,:,:) |
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| 190 | CALL iom_put( "KE", zke ) |
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| 191 | ! |
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| 192 | CALL ken_p2k( kt , zke ) |
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| 193 | CALL iom_put( "ketrd_convP2K", zke ) ! conversion -rau*g*w |
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[4619] | 194 | ! |
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| 195 | END SELECT |
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| 196 | ! |
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| 197 | CALL wrk_dealloc( jpi, jpj, jpk, zke ) |
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| 198 | ! |
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| 199 | END SUBROUTINE trd_ken |
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| 200 | |
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| 201 | |
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| 202 | SUBROUTINE ken_p2k( kt , pconv ) |
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| 203 | !!--------------------------------------------------------------------- |
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| 204 | !! *** ROUTINE ken_p2k *** |
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| 205 | !! |
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| 206 | !! ** Purpose : compute rate of conversion from potential to kinetic energy |
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| 207 | !! |
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| 208 | !! ** Method : - compute conv defined as -rau*g*w on T-grid points |
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| 209 | !! |
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| 210 | !! ** Work only for full steps and partial steps (ln_hpg_zco or ln_hpg_zps) |
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| 211 | !!---------------------------------------------------------------------- |
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| 212 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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| 213 | !! |
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| 214 | REAL(wp), DIMENSION(jpi,jpj,jpk ), INTENT( out) :: pconv |
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| 215 | ! |
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| 216 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 217 | INTEGER :: iku, ikv ! temporary integers |
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| 218 | REAL(wp) :: zcoef ! temporary scalars |
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| 219 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zconv ! temporary conv on W-grid |
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| 220 | !!---------------------------------------------------------------------- |
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| 221 | ! |
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| 222 | CALL wrk_alloc( jpi,jpj,jpk, zconv ) |
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| 223 | ! |
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| 224 | ! Local constant initialization |
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| 225 | zcoef = - rau0 * grav * 0.5_wp |
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| 226 | |
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| 227 | ! Surface value (also valid in partial step case) |
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| 228 | zconv(:,:,1) = zcoef * ( 2._wp * rhd(:,:,1) ) * wn(:,:,1) * fse3w(:,:,1) |
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| 229 | |
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| 230 | ! interior value (2=<jk=<jpkm1) |
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| 231 | DO jk = 2, jpk |
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| 232 | zconv(:,:,jk) = zcoef * ( rhd(:,:,jk) + rhd(:,:,jk-1) ) * wn(:,:,jk) * fse3w(:,:,jk) |
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| 233 | END DO |
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| 234 | |
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| 235 | ! conv value on T-point |
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| 236 | DO jk = 1, jpkm1 |
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| 237 | DO jj = 1, jpj |
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| 238 | DO ji = 1, jpi |
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| 239 | zcoef = 0.5_wp / fse3t(ji,jj,jk) |
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| 240 | pconv(ji,jj,jk) = zcoef * ( zconv(ji,jj,jk) + zconv(ji,jj,jk+1) ) * tmask(ji,jj,jk) |
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| 241 | END DO |
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| 242 | END DO |
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| 243 | END DO |
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| 244 | ! |
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| 245 | CALL wrk_dealloc( jpi,jpj,jpk, zconv ) |
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| 246 | ! |
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| 247 | END SUBROUTINE ken_p2k |
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| 248 | |
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| 249 | |
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| 250 | SUBROUTINE trd_ken_init |
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| 251 | !!--------------------------------------------------------------------- |
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| 252 | !! *** ROUTINE trd_ken_init *** |
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| 253 | !! |
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| 254 | !! ** Purpose : initialisation of 3D Kinetic Energy trend diagnostic |
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| 255 | !!---------------------------------------------------------------------- |
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| 256 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 257 | !!---------------------------------------------------------------------- |
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| 258 | ! |
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| 259 | IF(lwp) THEN |
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| 260 | WRITE(numout,*) |
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| 261 | WRITE(numout,*) 'trd_ken_init : 3D Kinetic Energy trends' |
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| 262 | WRITE(numout,*) '~~~~~~~~~~~~~' |
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| 263 | ENDIF |
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| 264 | ! ! allocate box volume arrays |
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| 265 | IF ( trd_ken_alloc() /= 0 ) CALL ctl_stop('trd_ken_alloc: failed to allocate arrays') |
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| 266 | ! |
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| 267 | !!gm IF( .NOT. (ln_hpg_zco.OR.ln_hpg_zps) ) & |
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| 268 | !!gm & CALL ctl_stop('trd_ken_init : only full and partial cells are coded for conversion rate') |
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| 269 | ! |
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| 270 | IF ( .NOT.lk_vvl ) THEN ! constant volume: bu, bv, 1/bt computed one for all |
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| 271 | DO jk = 1, jpkm1 |
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| 272 | bu (:,:,jk) = e1u(:,:) * e2u(:,:) * fse3u_n(:,:,jk) |
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| 273 | bv (:,:,jk) = e1v(:,:) * e2v(:,:) * fse3v_n(:,:,jk) |
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| 274 | r1_bt(:,:,jk) = 1._wp / ( e1e2t(:,:) * fse3t_n(:,:,jk) ) |
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| 275 | END DO |
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| 276 | ENDIF |
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| 277 | ! |
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| 278 | END SUBROUTINE trd_ken_init |
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| 279 | |
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| 280 | !!====================================================================== |
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| 281 | END MODULE trdken |
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