[13151] | 1 | MODULE dynatfqco |
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| 2 | !!========================================================================= |
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| 3 | !! *** MODULE dynatfqco *** |
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| 4 | !! Ocean dynamics: time filtering |
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| 5 | !!========================================================================= |
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| 6 | !! History : OPA ! 1987-02 (P. Andrich, D. L Hostis) Original code |
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| 7 | !! ! 1990-10 (C. Levy, G. Madec) |
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| 8 | !! 7.0 ! 1993-03 (M. Guyon) symetrical conditions |
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| 9 | !! 8.0 ! 1997-02 (G. Madec & M. Imbard) opa, release 8.0 |
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| 10 | !! 8.2 ! 1997-04 (A. Weaver) Euler forward step |
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| 11 | !! - ! 1997-06 (G. Madec) lateral boudary cond., lbc routine |
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| 12 | !! NEMO 1.0 ! 2002-08 (G. Madec) F90: Free form and module |
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| 13 | !! - ! 2002-10 (C. Talandier, A-M. Treguier) Open boundary cond. |
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| 14 | !! 2.0 ! 2005-11 (V. Garnier) Surface pressure gradient organization |
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| 15 | !! 2.3 ! 2007-07 (D. Storkey) Calls to BDY routines. |
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| 16 | !! 3.2 ! 2009-06 (G. Madec, R.Benshila) re-introduce the vvl option |
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| 17 | !! 3.3 ! 2010-09 D. Storkey, E.O'Dea) Bug fix for BDY module |
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| 18 | !! 3.3 ! 2011-03 (P. Oddo) Bug fix for time-splitting+(BDY-OBC) and not VVL |
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| 19 | !! 3.5 ! 2013-07 (J. Chanut) Compliant with time splitting changes |
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| 20 | !! 3.6 ! 2014-04 (G. Madec) add the diagnostic of the time filter trends |
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| 21 | !! 3.7 ! 2015-11 (J. Chanut) Free surface simplification |
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| 22 | !! 4.1 ! 2019-08 (A. Coward, D. Storkey) Rename dynnxt.F90 -> dynatfLF.F90. Now just does time filtering. |
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| 23 | !!------------------------------------------------------------------------- |
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| 24 | |
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| 25 | !!---------------------------------------------------------------------------------------------- |
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| 26 | !! dyn_atf_qco : apply Asselin time filtering to "now" velocities and vertical scale factors |
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| 27 | !!---------------------------------------------------------------------------------------------- |
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| 28 | USE oce ! ocean dynamics and tracers |
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| 29 | USE dom_oce ! ocean space and time domain |
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| 30 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 31 | USE sbcrnf ! river runoffs |
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| 32 | USE phycst ! physical constants |
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| 33 | USE dynadv ! dynamics: vector invariant versus flux form |
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| 34 | USE dynspg_ts ! surface pressure gradient: split-explicit scheme |
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| 35 | USE domvvl ! variable volume |
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| 36 | USE bdy_oce , ONLY: ln_bdy |
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| 37 | USE bdydta ! ocean open boundary conditions |
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| 38 | USE bdydyn ! ocean open boundary conditions |
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| 39 | USE bdyvol ! ocean open boundary condition (bdy_vol routines) |
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| 40 | USE trd_oce ! trends: ocean variables |
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| 41 | USE trddyn ! trend manager: dynamics |
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| 42 | USE trdken ! trend manager: kinetic energy |
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| 43 | USE isf_oce , ONLY: ln_isf ! ice shelf |
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| 44 | USE isfdynatf , ONLY: isf_dynatf ! ice shelf volume filter correction subroutine |
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| 45 | ! |
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| 46 | USE in_out_manager ! I/O manager |
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| 47 | USE iom ! I/O manager library |
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| 48 | USE lbclnk ! lateral boundary condition (or mpp link) |
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| 49 | USE lib_mpp ! MPP library |
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| 50 | USE prtctl ! Print control |
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| 51 | USE timing ! Timing |
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| 52 | #if defined key_agrif |
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| 53 | USE agrif_oce_interp |
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| 54 | #endif |
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| 55 | |
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| 56 | IMPLICIT NONE |
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| 57 | PRIVATE |
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| 58 | |
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| 59 | PUBLIC dyn_atf_qco ! routine called by step.F90 |
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| 60 | |
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| 61 | !! * Substitutions |
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| 62 | # include "do_loop_substitute.h90" |
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| 63 | # include "domzgr_substitute.h90" |
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| 64 | !!---------------------------------------------------------------------- |
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| 65 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 66 | !! $Id: dynatf_qco.F90 12732 2020-04-09 19:06:01Z techene $ |
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| 67 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 68 | !!---------------------------------------------------------------------- |
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| 69 | CONTAINS |
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| 70 | |
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| 71 | SUBROUTINE dyn_atf_qco ( kt, Kbb, Kmm, Kaa, puu, pvv ) |
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| 72 | !!---------------------------------------------------------------------- |
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| 73 | !! *** ROUTINE dyn_atf_qco *** |
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| 74 | !! |
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| 75 | !! ** Purpose : Finalize after horizontal velocity. Apply the boundary |
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| 76 | !! condition on the after velocity and apply the Asselin time |
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| 77 | !! filter to the now fields. |
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| 78 | !! |
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| 79 | !! ** Method : * Ensure after velocities transport matches time splitting |
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| 80 | !! estimate (ln_dynspg_ts=T) |
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| 81 | !! |
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| 82 | !! * Apply lateral boundary conditions on after velocity |
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| 83 | !! at the local domain boundaries through lbc_lnk call, |
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| 84 | !! at the one-way open boundaries (ln_bdy=T), |
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| 85 | !! at the AGRIF zoom boundaries (lk_agrif=T) |
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| 86 | !! |
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| 87 | !! * Apply the Asselin time filter to the now fields |
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| 88 | !! arrays to start the next time step: |
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| 89 | !! (puu(Kmm),pvv(Kmm)) = (puu(Kmm),pvv(Kmm)) |
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| 90 | !! + atfp [ (puu(Kbb),pvv(Kbb)) + (puu(Kaa),pvv(Kaa)) - 2 (puu(Kmm),pvv(Kmm)) ] |
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| 91 | !! Note that with flux form advection and non linear free surface, |
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| 92 | !! the time filter is applied on thickness weighted velocity. |
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| 93 | !! As a result, dyn_atf_lf MUST be called after tra_atf. |
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| 94 | !! |
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| 95 | !! ** Action : puu(Kmm),pvv(Kmm) filtered now horizontal velocity |
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| 96 | !!---------------------------------------------------------------------- |
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| 97 | INTEGER , INTENT(in ) :: kt ! ocean time-step index |
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| 98 | INTEGER , INTENT(in ) :: Kbb, Kmm, Kaa ! before and after time level indices |
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| 99 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpt), INTENT(inout) :: puu, pvv ! velocities to be time filtered |
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| 100 | ! |
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| 101 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 102 | REAL(wp) :: zue3a, zue3n, zue3b, zcoef ! local scalars |
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| 103 | REAL(wp) :: zve3a, zve3n, zve3b, z1_2dt ! - - |
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| 104 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: zue, zve |
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| 105 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: zua, zva |
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| 106 | !!---------------------------------------------------------------------- |
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| 107 | ! |
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| 108 | IF( ln_timing ) CALL timing_start('dyn_atf_qco') |
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| 109 | IF( ln_dynspg_ts ) ALLOCATE( zue(jpi,jpj) , zve(jpi,jpj) ) |
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| 110 | IF( l_trddyn ) ALLOCATE( zua(jpi,jpj,jpk) , zva(jpi,jpj,jpk) ) |
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| 111 | ! |
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| 112 | IF( kt == nit000 ) THEN |
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| 113 | IF(lwp) WRITE(numout,*) |
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| 114 | IF(lwp) WRITE(numout,*) 'dyn_atf_qco : Asselin time filtering' |
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| 115 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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| 116 | ENDIF |
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| 117 | ! |
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| 118 | IF( l_trddyn ) THEN ! prepare the atf trend computation + some diagnostics |
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| 119 | ! |
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| 120 | ! ! Kinetic energy and Conversion |
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| 121 | IF( ln_KE_trd ) CALL trd_dyn( puu(:,:,:,Kaa), pvv(:,:,:,Kaa), jpdyn_ken, kt, Kmm ) |
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| 122 | ! |
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| 123 | IF( ln_dyn_trd ) THEN ! 3D output: total momentum trends |
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| 124 | zua(:,:,:) = ( puu(:,:,:,Kaa) - puu(:,:,:,Kbb) ) * r1_Dt |
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| 125 | zva(:,:,:) = ( pvv(:,:,:,Kaa) - pvv(:,:,:,Kbb) ) * r1_Dt |
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| 126 | CALL iom_put( "utrd_tot", zua ) ! total momentum trends, except the asselin time filter |
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| 127 | CALL iom_put( "vtrd_tot", zva ) |
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| 128 | ENDIF |
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| 129 | ! |
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| 130 | zua(:,:,:) = puu(:,:,:,Kmm) ! save the now velocity before the asselin filter |
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| 131 | zva(:,:,:) = pvv(:,:,:,Kmm) ! (caution: there will be a shift by 1 timestep in the |
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| 132 | ! ! computation of the asselin filter trends) |
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| 133 | ENDIF |
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| 134 | |
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| 135 | ! Time filter and swap of dynamics arrays |
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| 136 | ! ------------------------------------------ |
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| 137 | |
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| 138 | IF( .NOT. l_1st_euler ) THEN !* Leap-Frog : Asselin time filter |
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| 139 | ! ! =============! |
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| 140 | IF( ln_linssh ) THEN ! Fixed volume ! |
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| 141 | ! ! =============! |
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| 142 | DO_3D_11_11( 1, jpkm1 ) |
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| 143 | puu(ji,jj,jk,Kmm) = puu(ji,jj,jk,Kmm) + rn_atfp * ( puu(ji,jj,jk,Kbb) - 2._wp * puu(ji,jj,jk,Kmm) + puu(ji,jj,jk,Kaa) ) |
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| 144 | pvv(ji,jj,jk,Kmm) = pvv(ji,jj,jk,Kmm) + rn_atfp * ( pvv(ji,jj,jk,Kbb) - 2._wp * pvv(ji,jj,jk,Kmm) + pvv(ji,jj,jk,Kaa) ) |
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| 145 | END_3D |
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| 146 | ! ! ================! |
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| 147 | ELSE ! Variable volume ! |
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| 148 | ! ! ================! |
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| 149 | ! |
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| 150 | IF( ln_dynadv_vec ) THEN ! Asselin filter applied on velocity |
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| 151 | ! Before filtered scale factor at (u/v)-points |
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| 152 | DO_3D_11_11( 1, jpkm1 ) |
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| 153 | puu(ji,jj,jk,Kmm) = puu(ji,jj,jk,Kmm) + rn_atfp * ( puu(ji,jj,jk,Kbb) - 2._wp * puu(ji,jj,jk,Kmm) + puu(ji,jj,jk,Kaa) ) |
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| 154 | pvv(ji,jj,jk,Kmm) = pvv(ji,jj,jk,Kmm) + rn_atfp * ( pvv(ji,jj,jk,Kbb) - 2._wp * pvv(ji,jj,jk,Kmm) + pvv(ji,jj,jk,Kaa) ) |
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| 155 | END_3D |
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| 156 | ! |
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| 157 | ELSE ! Asselin filter applied on thickness weighted velocity |
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| 158 | ! |
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| 159 | DO_3D_11_11( 1, jpkm1 ) |
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| 160 | zue3a = ( 1._wp + r3u(ji,jj,Kaa) * umask(ji,jj,jk) ) * puu(ji,jj,jk,Kaa) |
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| 161 | zve3a = ( 1._wp + r3v(ji,jj,Kaa) * vmask(ji,jj,jk) ) * pvv(ji,jj,jk,Kaa) |
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| 162 | zue3n = ( 1._wp + r3u(ji,jj,Kmm) * umask(ji,jj,jk) ) * puu(ji,jj,jk,Kmm) |
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| 163 | zve3n = ( 1._wp + r3v(ji,jj,Kmm) * vmask(ji,jj,jk) ) * pvv(ji,jj,jk,Kmm) |
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| 164 | zue3b = ( 1._wp + r3u(ji,jj,Kbb) * umask(ji,jj,jk) ) * puu(ji,jj,jk,Kbb) |
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| 165 | zve3b = ( 1._wp + r3v(ji,jj,Kbb) * vmask(ji,jj,jk) ) * pvv(ji,jj,jk,Kbb) |
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| 166 | ! ! filtered scale factor at U-,V-points |
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| 167 | puu(ji,jj,jk,Kmm) = ( zue3n + rn_atfp * ( zue3b - 2._wp * zue3n + zue3a ) ) / ( 1._wp + r3u_f(ji,jj)*umask(ji,jj,jk) ) |
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| 168 | pvv(ji,jj,jk,Kmm) = ( zve3n + rn_atfp * ( zve3b - 2._wp * zve3n + zve3a ) ) / ( 1._wp + r3v_f(ji,jj)*vmask(ji,jj,jk) ) |
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| 169 | END_3D |
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| 170 | ! |
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| 171 | ENDIF |
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| 172 | ! |
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| 173 | ENDIF |
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| 174 | ! |
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| 175 | IF( ln_dynspg_ts .AND. ln_bt_fw ) THEN |
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| 176 | ! Revert filtered "now" velocities to time split estimate |
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| 177 | ! Doing it here also means that asselin filter contribution is removed |
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| 178 | ! zue(:,:) = pe3u(:,:,1,Kmm) * puu(:,:,1,Kmm) * umask(:,:,1) |
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| 179 | ! zve(:,:) = pe3v(:,:,1,Kmm) * pvv(:,:,1,Kmm) * vmask(:,:,1) |
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| 180 | ! DO jk = 2, jpkm1 |
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| 181 | ! zue(:,:) = zue(:,:) + pe3u(:,:,jk,Kmm) * puu(:,:,jk,Kmm) * umask(:,:,jk) |
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| 182 | ! zve(:,:) = zve(:,:) + pe3v(:,:,jk,Kmm) * pvv(:,:,jk,Kmm) * vmask(:,:,jk) |
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| 183 | ! END DO |
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| 184 | zue(:,:) = e3u(:,:,1,Kmm) * puu(:,:,1,Kmm) * umask(:,:,1) |
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| 185 | zve(:,:) = e3v(:,:,1,Kmm) * pvv(:,:,1,Kmm) * vmask(:,:,1) |
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| 186 | DO jk = 2, jpkm1 |
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| 187 | zue(:,:) = zue(:,:) + e3u(:,:,jk,Kmm) * puu(:,:,jk,Kmm) * umask(:,:,jk) |
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| 188 | zve(:,:) = zve(:,:) + e3v(:,:,jk,Kmm) * pvv(:,:,jk,Kmm) * vmask(:,:,jk) |
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| 189 | END DO |
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| 190 | DO jk = 1, jpkm1 |
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| 191 | puu(:,:,jk,Kmm) = puu(:,:,jk,Kmm) - (zue(:,:) * r1_hu(:,:,Kmm) - uu_b(:,:,Kmm)) * umask(:,:,jk) |
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| 192 | pvv(:,:,jk,Kmm) = pvv(:,:,jk,Kmm) - (zve(:,:) * r1_hv(:,:,Kmm) - vv_b(:,:,Kmm)) * vmask(:,:,jk) |
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| 193 | END DO |
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| 194 | ENDIF |
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| 195 | ! |
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| 196 | ENDIF ! .NOT. l_1st_euler |
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| 197 | ! |
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| 198 | ! Set "now" and "before" barotropic velocities for next time step: |
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| 199 | ! JC: Would be more clever to swap variables than to make a full vertical |
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| 200 | ! integration |
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| 201 | ! |
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| 202 | uu_b(:,:,Kaa) = e3u(:,:,1,Kaa) * puu(:,:,1,Kaa) * umask(:,:,1) |
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| 203 | uu_b(:,:,Kmm) = e3u(:,:,1,Kmm) * puu(:,:,1,Kmm) * umask(:,:,1) |
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| 204 | vv_b(:,:,Kaa) = e3v(:,:,1,Kaa) * pvv(:,:,1,Kaa) * vmask(:,:,1) |
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| 205 | vv_b(:,:,Kmm) = e3v(:,:,1,Kmm) * pvv(:,:,1,Kmm) * vmask(:,:,1) |
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| 206 | DO jk = 2, jpkm1 |
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| 207 | uu_b(:,:,Kaa) = uu_b(:,:,Kaa) + e3u(:,:,jk,Kaa) * puu(:,:,jk,Kaa) * umask(:,:,jk) |
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| 208 | uu_b(:,:,Kmm) = uu_b(:,:,Kmm) + e3u(:,:,jk,Kmm) * puu(:,:,jk,Kmm) * umask(:,:,jk) |
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| 209 | vv_b(:,:,Kaa) = vv_b(:,:,Kaa) + e3v(:,:,jk,Kaa) * pvv(:,:,jk,Kaa) * vmask(:,:,jk) |
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| 210 | vv_b(:,:,Kmm) = vv_b(:,:,Kmm) + e3v(:,:,jk,Kmm) * pvv(:,:,jk,Kmm) * vmask(:,:,jk) |
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| 211 | END DO |
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| 212 | uu_b(:,:,Kaa) = uu_b(:,:,Kaa) * r1_hu(:,:,Kaa) |
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| 213 | vv_b(:,:,Kaa) = vv_b(:,:,Kaa) * r1_hv(:,:,Kaa) |
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| 214 | uu_b(:,:,Kmm) = uu_b(:,:,Kmm) * r1_hu(:,:,Kmm) |
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| 215 | vv_b(:,:,Kmm) = vv_b(:,:,Kmm) * r1_hv(:,:,Kmm) |
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| 216 | ! |
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| 217 | IF( .NOT.ln_dynspg_ts ) THEN ! output the barotropic currents |
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| 218 | CALL iom_put( "ubar", uu_b(:,:,Kmm) ) |
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| 219 | CALL iom_put( "vbar", vv_b(:,:,Kmm) ) |
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| 220 | ENDIF |
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| 221 | IF( l_trddyn ) THEN ! 3D output: asselin filter trends on momentum |
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| 222 | zua(:,:,:) = ( puu(:,:,:,Kmm) - zua(:,:,:) ) * z1_2dt |
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| 223 | zva(:,:,:) = ( pvv(:,:,:,Kmm) - zva(:,:,:) ) * z1_2dt |
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| 224 | CALL trd_dyn( zua, zva, jpdyn_atf, kt, Kmm ) |
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| 225 | ENDIF |
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| 226 | ! |
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| 227 | IF(sn_cfctl%l_prtctl) CALL prt_ctl( tab3d_1=puu(:,:,:,Kaa), clinfo1=' nxt - puu(:,:,:,Kaa): ', mask1=umask, & |
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| 228 | & tab3d_2=pvv(:,:,:,Kaa), clinfo2=' pvv(:,:,:,Kaa): ' , mask2=vmask ) |
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| 229 | ! |
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| 230 | IF( ln_dynspg_ts ) DEALLOCATE( zue, zve ) |
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| 231 | IF( l_trddyn ) DEALLOCATE( zua, zva ) |
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| 232 | IF( ln_timing ) CALL timing_stop('dyn_atf_qco') |
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| 233 | ! |
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| 234 | END SUBROUTINE dyn_atf_qco |
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| 235 | |
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| 236 | !!========================================================================= |
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| 237 | END MODULE dynatfqco |
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