[456] | 1 | MODULE dynzdf |
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| 2 | !!============================================================================== |
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| 3 | !! *** MODULE dynzdf *** |
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| 4 | !! Ocean dynamics : vertical component of the momentum mixing trend |
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| 5 | !!============================================================================== |
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[2528] | 6 | !! History : 1.0 ! 2005-11 (G. Madec) Original code |
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| 7 | !! 3.3 ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase |
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[456] | 8 | !!---------------------------------------------------------------------- |
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[503] | 9 | |
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| 10 | !!---------------------------------------------------------------------- |
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[5836] | 11 | !! dyn_zdf : Update the momentum trend with the vertical diffusion |
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| 12 | !! dyn_zdf_init : initializations of the vertical diffusion scheme |
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[456] | 13 | !!---------------------------------------------------------------------- |
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[5836] | 14 | USE oce ! ocean dynamics and tracers variables |
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| 15 | USE dom_oce ! ocean space and time domain variables |
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| 16 | USE zdf_oce ! ocean vertical physics variables |
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| 17 | USE dynzdf_exp ! vertical diffusion: explicit (dyn_zdf_exp routine) |
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| 18 | USE dynzdf_imp ! vertical diffusion: implicit (dyn_zdf_imp routine) |
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| 19 | USE ldfdyn ! lateral diffusion: eddy viscosity coef. |
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| 20 | USE trd_oce ! trends: ocean variables |
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| 21 | USE trddyn ! trend manager: dynamics |
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| 22 | ! |
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| 23 | USE in_out_manager ! I/O manager |
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| 24 | USE lib_mpp ! MPP library |
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| 25 | USE prtctl ! Print control |
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| 26 | USE wrk_nemo ! Memory Allocation |
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| 27 | USE timing ! Timing |
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[456] | 28 | |
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| 29 | IMPLICIT NONE |
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| 30 | PRIVATE |
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| 31 | |
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[2528] | 32 | PUBLIC dyn_zdf ! routine called by step.F90 |
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| 33 | PUBLIC dyn_zdf_init ! routine called by opa.F90 |
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[456] | 34 | |
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[2528] | 35 | INTEGER :: nzdf = 0 ! type vertical diffusion algorithm used, defined from ln_zdf... namlist logicals |
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[456] | 36 | |
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| 37 | !! * Substitutions |
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| 38 | # include "vectopt_loop_substitute.h90" |
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| 39 | !!---------------------------------------------------------------------- |
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[2528] | 40 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[1152] | 41 | !! $Id$ |
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[2528] | 42 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[456] | 43 | !!---------------------------------------------------------------------- |
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| 44 | |
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| 45 | CONTAINS |
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| 46 | |
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| 47 | SUBROUTINE dyn_zdf( kt ) |
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| 48 | !!---------------------------------------------------------------------- |
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| 49 | !! *** ROUTINE dyn_zdf *** |
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| 50 | !! |
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| 51 | !! ** Purpose : compute the vertical ocean dynamics physics. |
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| 52 | !!--------------------------------------------------------------------- |
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[2715] | 53 | !! |
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[456] | 54 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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[3294] | 55 | ! |
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| 56 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ztrdu, ztrdv |
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[456] | 57 | !!--------------------------------------------------------------------- |
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[3294] | 58 | ! |
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[5836] | 59 | IF( nn_timing == 1 ) CALL timing_start('dyn_zdf') |
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[3294] | 60 | ! |
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[456] | 61 | ! ! set time step |
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[6140] | 62 | IF( neuler == 0 .AND. kt == nit000 ) THEN ; r2dt = rdt ! = rdt (restart with Euler time stepping) |
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| 63 | ELSEIF( kt <= nit000 + 1 ) THEN ; r2dt = 2. * rdt ! = 2 rdt (leapfrog) |
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[456] | 64 | ENDIF |
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| 65 | |
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| 66 | IF( l_trddyn ) THEN ! temporary save of ta and sa trends |
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[3294] | 67 | CALL wrk_alloc( jpi, jpj, jpk, ztrdu, ztrdv ) |
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[7753] | 68 | ztrdu(:,:,:) = ua(:,:,:) |
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| 69 | ztrdv(:,:,:) = va(:,:,:) |
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[456] | 70 | ENDIF |
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| 71 | |
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| 72 | SELECT CASE ( nzdf ) ! compute lateral mixing trend and add it to the general trend |
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[503] | 73 | ! |
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[2528] | 74 | CASE ( 0 ) ; CALL dyn_zdf_exp( kt, r2dt ) ! explicit scheme |
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| 75 | CASE ( 1 ) ; CALL dyn_zdf_imp( kt, r2dt ) ! implicit scheme |
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[503] | 76 | ! |
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[456] | 77 | END SELECT |
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| 78 | |
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[503] | 79 | IF( l_trddyn ) THEN ! save the vertical diffusive trends for further diagnostics |
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[7753] | 80 | ztrdu(:,:,:) = ( ua(:,:,:) - ub(:,:,:) ) / r2dt - ztrdu(:,:,:) |
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| 81 | ztrdv(:,:,:) = ( va(:,:,:) - vb(:,:,:) ) / r2dt - ztrdv(:,:,:) |
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[4990] | 82 | CALL trd_dyn( ztrdu, ztrdv, jpdyn_zdf, kt ) |
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[3294] | 83 | CALL wrk_dealloc( jpi, jpj, jpk, ztrdu, ztrdv ) |
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[456] | 84 | ENDIF |
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| 85 | ! ! print mean trends (used for debugging) |
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| 86 | IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' zdf - Ua: ', mask1=umask, & |
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[5836] | 87 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
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| 88 | ! |
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| 89 | IF( nn_timing == 1 ) CALL timing_stop('dyn_zdf') |
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[503] | 90 | ! |
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[456] | 91 | END SUBROUTINE dyn_zdf |
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| 92 | |
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| 93 | |
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[2528] | 94 | SUBROUTINE dyn_zdf_init |
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[456] | 95 | !!---------------------------------------------------------------------- |
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[2528] | 96 | !! *** ROUTINE dyn_zdf_init *** |
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[456] | 97 | !! |
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[503] | 98 | !! ** Purpose : initializations of the vertical diffusion scheme |
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[456] | 99 | !! |
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| 100 | !! ** Method : implicit (euler backward) scheme (default) |
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| 101 | !! explicit (time-splitting) scheme if ln_zdfexp=T |
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| 102 | !!---------------------------------------------------------------------- |
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| 103 | USE zdftke |
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[2528] | 104 | USE zdfgls |
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[456] | 105 | !!---------------------------------------------------------------------- |
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[2528] | 106 | ! |
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[456] | 107 | ! Choice from ln_zdfexp read in namelist in zdfini |
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[503] | 108 | IF( ln_zdfexp ) THEN ; nzdf = 0 ! use explicit scheme |
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| 109 | ELSE ; nzdf = 1 ! use implicit scheme |
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[456] | 110 | ENDIF |
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[2528] | 111 | ! |
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[456] | 112 | ! Force implicit schemes |
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[5836] | 113 | IF( lk_zdftke .OR. lk_zdfgls ) nzdf = 1 ! TKE or GLS physics |
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| 114 | IF( ln_dynldf_iso ) nzdf = 1 ! iso-neutral lateral physics |
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| 115 | IF( ln_dynldf_hor .AND. ln_sco ) nzdf = 1 ! horizontal lateral physics in s-coordinate |
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[2528] | 116 | ! |
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[503] | 117 | IF(lwp) THEN ! Print the choice |
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[456] | 118 | WRITE(numout,*) |
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[2528] | 119 | WRITE(numout,*) 'dyn_zdf_init : vertical dynamics physics scheme' |
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[456] | 120 | WRITE(numout,*) '~~~~~~~~~~~' |
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[7646] | 121 | IF( nzdf == 0 ) WRITE(numout,*) ' ===>> Explicit time-splitting scheme' |
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| 122 | IF( nzdf == 1 ) WRITE(numout,*) ' ===>> Implicit (euler backward) scheme' |
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[456] | 123 | ENDIF |
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[503] | 124 | ! |
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[2528] | 125 | END SUBROUTINE dyn_zdf_init |
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[456] | 126 | |
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| 127 | !!============================================================================== |
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| 128 | END MODULE dynzdf |
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