[3] | 1 | MODULE trasbc |
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| 2 | !!============================================================================== |
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| 3 | !! *** MODULE trasbc *** |
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| 4 | !! Ocean active tracers: surface boundary condition |
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| 5 | !!============================================================================== |
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[2528] | 6 | !! History : OPA ! 1998-10 (G. Madec, G. Roullet, M. Imbard) Original code |
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| 7 | !! 8.2 ! 2001-02 (D. Ludicone) sea ice and free surface |
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| 8 | !! NEMO 1.0 ! 2002-06 (G. Madec) F90: Free form and module |
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| 9 | !! 3.3 ! 2010-04 (M. Leclair, G. Madec) Forcing averaged over 2 time steps |
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| 10 | !! - ! 2010-09 (C. Ethe, G. Madec) Merge TRA-TRC |
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[14072] | 11 | !! 3.6 ! 2014-11 (P. Mathiot) isf melting forcing |
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[12377] | 12 | !! 4.1 ! 2019-09 (P. Mathiot) isf moved in traisf |
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[3] | 13 | !!---------------------------------------------------------------------- |
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[503] | 14 | |
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| 15 | !!---------------------------------------------------------------------- |
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[6140] | 16 | !! tra_sbc : update the tracer trend at ocean surface |
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[3] | 17 | !!---------------------------------------------------------------------- |
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[6140] | 18 | USE oce ! ocean dynamics and active tracers |
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| 19 | USE sbc_oce ! surface boundary condition: ocean |
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| 20 | USE dom_oce ! ocean space domain variables |
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| 21 | USE phycst ! physical constant |
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| 22 | USE eosbn2 ! Equation Of State |
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[14072] | 23 | USE sbcmod ! ln_rnf |
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| 24 | USE sbcrnf ! River runoff |
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[6140] | 25 | USE traqsr ! solar radiation penetration |
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| 26 | USE trd_oce ! trends: ocean variables |
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[14072] | 27 | USE trdtra ! trends manager: tracers |
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| 28 | #if defined key_asminc |
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[9023] | 29 | USE asminc ! Assimilation increment |
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| 30 | #endif |
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[4990] | 31 | ! |
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[6140] | 32 | USE in_out_manager ! I/O manager |
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| 33 | USE prtctl ! Print control |
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| 34 | USE iom ! xIOS server |
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| 35 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 36 | USE timing ! Timing |
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[3] | 37 | |
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| 38 | IMPLICIT NONE |
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| 39 | PRIVATE |
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| 40 | |
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[6140] | 41 | PUBLIC tra_sbc ! routine called by step.F90 |
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[3] | 42 | |
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| 43 | !! * Substitutions |
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[12377] | 44 | # include "do_loop_substitute.h90" |
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[13237] | 45 | # include "domzgr_substitute.h90" |
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[3] | 46 | !!---------------------------------------------------------------------- |
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[9598] | 47 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[888] | 48 | !! $Id$ |
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[10068] | 49 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3] | 50 | !!---------------------------------------------------------------------- |
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| 51 | CONTAINS |
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| 52 | |
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[12377] | 53 | SUBROUTINE tra_sbc ( kt, Kmm, pts, Krhs ) |
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[3] | 54 | !!---------------------------------------------------------------------- |
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| 55 | !! *** ROUTINE tra_sbc *** |
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[14072] | 56 | !! |
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[3] | 57 | !! ** Purpose : Compute the tracer surface boundary condition trend of |
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| 58 | !! (flux through the interface, concentration/dilution effect) |
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| 59 | !! and add it to the general trend of tracer equations. |
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| 60 | !! |
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[14072] | 61 | !! ** Method : The (air+ice)-sea flux has two components: |
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| 62 | !! (1) Fext, external forcing (i.e. flux through the (air+ice)-sea interface); |
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| 63 | !! (2) Fwe , tracer carried with the water that is exchanged with air+ice. |
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[12377] | 64 | !! The input forcing fields (emp, rnf, sfx) contain Fext+Fwe, |
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| 65 | !! they are simply added to the tracer trend (ts(Krhs)). |
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[6140] | 66 | !! In linear free surface case (ln_linssh=T), the volume of the |
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| 67 | !! ocean does not change with the water exchanges at the (air+ice)-sea |
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| 68 | !! interface. Therefore another term has to be added, to mimic the |
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| 69 | !! concentration/dilution effect associated with water exchanges. |
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[664] | 70 | !! |
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[14072] | 71 | !! ** Action : - Update ts(Krhs) with the surface boundary condition trend |
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[6140] | 72 | !! - send trends to trdtra module for further diagnostics(l_trdtra=T) |
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[503] | 73 | !!---------------------------------------------------------------------- |
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[14053] | 74 | INTEGER, INTENT(in ) :: kt ! ocean time-step index |
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| 75 | INTEGER, INTENT(in ) :: Kmm, Krhs ! time level indices |
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| 76 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpts,jpt), INTENT(inout) :: pts ! active tracers and RHS of tracer Eq. |
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[6140] | 77 | ! |
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[13982] | 78 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
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[14834] | 79 | INTEGER :: ikt, ikb ! local integers |
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[13982] | 80 | REAL(wp) :: zfact, z1_e3t, zdep, ztim ! local scalar |
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[9019] | 81 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrdt, ztrds |
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[3] | 82 | !!---------------------------------------------------------------------- |
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[3294] | 83 | ! |
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[9019] | 84 | IF( ln_timing ) CALL timing_start('tra_sbc') |
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[3294] | 85 | ! |
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[14834] | 86 | IF( .NOT. l_istiled .OR. ntile == 1 ) THEN ! Do only on the first tile |
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[13982] | 87 | IF( kt == nit000 ) THEN |
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| 88 | IF(lwp) WRITE(numout,*) |
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| 89 | IF(lwp) WRITE(numout,*) 'tra_sbc : TRAcer Surface Boundary Condition' |
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| 90 | IF(lwp) WRITE(numout,*) '~~~~~~~ ' |
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| 91 | ENDIF |
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[3] | 92 | ENDIF |
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[6140] | 93 | ! |
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[4990] | 94 | IF( l_trdtra ) THEN !* Save ta and sa trends |
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[13982] | 95 | ALLOCATE( ztrdt(jpi,jpj,jpk), ztrds(jpi,jpj,jpk) ) |
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[12377] | 96 | ztrdt(:,:,:) = pts(:,:,:,jp_tem,Krhs) |
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| 97 | ztrds(:,:,:) = pts(:,:,:,jp_sal,Krhs) |
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[216] | 98 | ENDIF |
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[6140] | 99 | ! |
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| 100 | !!gm This should be moved into sbcmod.F90 module ? (especially now that ln_traqsr is read in namsbc namelist) |
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[2528] | 101 | IF( .NOT.ln_traqsr ) THEN ! no solar radiation penetration |
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[14834] | 102 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[13982] | 103 | qns(ji,jj) = qns(ji,jj) + qsr(ji,jj) ! total heat flux in qns |
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| 104 | qsr(ji,jj) = 0._wp ! qsr set to zero |
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| 105 | END_2D |
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[2528] | 106 | ENDIF |
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[3] | 107 | |
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[2528] | 108 | !---------------------------------------- |
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[4990] | 109 | ! EMP, SFX and QNS effects |
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[2528] | 110 | !---------------------------------------- |
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[6140] | 111 | ! !== Set before sbc tracer content fields ==! |
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| 112 | IF( kt == nit000 ) THEN !* 1st time-step |
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[14053] | 113 | IF( ln_rstart .AND. .NOT.l_1st_euler ) THEN ! Restart: read in restart file |
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[4990] | 114 | zfact = 0.5_wp |
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[14834] | 115 | IF( .NOT. l_istiled .OR. ntile == 1 ) THEN ! Do only on the first tile |
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[13982] | 116 | IF(lwp) WRITE(numout,*) ' nit000-1 sbc tracer content field read in the restart file' |
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| 117 | sbc_tsc(:,:,:) = 0._wp |
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| 118 | CALL iom_get( numror, jpdom_auto, 'sbc_hc_b', sbc_tsc_b(:,:,jp_tem) ) ! before heat content sbc trend |
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| 119 | CALL iom_get( numror, jpdom_auto, 'sbc_sc_b', sbc_tsc_b(:,:,jp_sal) ) ! before salt content sbc trend |
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| 120 | ENDIF |
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[14053] | 121 | ELSE ! No restart or restart not found: Euler forward time stepping |
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[4990] | 122 | zfact = 1._wp |
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[14834] | 123 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[13982] | 124 | sbc_tsc(ji,jj,:) = 0._wp |
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| 125 | sbc_tsc_b(ji,jj,:) = 0._wp |
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| 126 | END_2D |
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[2528] | 127 | ENDIF |
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[6140] | 128 | ELSE !* other time-steps: swap of forcing fields |
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[4990] | 129 | zfact = 0.5_wp |
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[14834] | 130 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[13982] | 131 | sbc_tsc_b(ji,jj,:) = sbc_tsc(ji,jj,:) |
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| 132 | END_2D |
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[2528] | 133 | ENDIF |
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[6140] | 134 | ! !== Now sbc tracer content fields ==! |
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[14834] | 135 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[12489] | 136 | sbc_tsc(ji,jj,jp_tem) = r1_rho0_rcp * qns(ji,jj) ! non solar heat flux |
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| 137 | sbc_tsc(ji,jj,jp_sal) = r1_rho0 * sfx(ji,jj) ! salt flux due to freezing/melting |
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[12377] | 138 | END_2D |
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[14072] | 139 | IF( ln_linssh ) THEN !* linear free surface |
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[14834] | 140 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) !==>> add concentration/dilution effect due to constant volume cell |
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[12489] | 141 | sbc_tsc(ji,jj,jp_tem) = sbc_tsc(ji,jj,jp_tem) + r1_rho0 * emp(ji,jj) * pts(ji,jj,1,jp_tem,Kmm) |
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| 142 | sbc_tsc(ji,jj,jp_sal) = sbc_tsc(ji,jj,jp_sal) + r1_rho0 * emp(ji,jj) * pts(ji,jj,1,jp_sal,Kmm) |
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[13497] | 143 | END_2D !==>> output c./d. term |
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[14834] | 144 | IF( iom_use('emp_x_sst') ) CALL iom_put( "emp_x_sst", emp (:,:) * pts(:,:,1,jp_tem,Kmm) ) |
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| 145 | IF( iom_use('emp_x_sss') ) CALL iom_put( "emp_x_sss", emp (:,:) * pts(:,:,1,jp_sal,Kmm) ) |
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[2528] | 146 | ENDIF |
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[6140] | 147 | ! |
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| 148 | DO jn = 1, jpts !== update tracer trend ==! |
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[13982] | 149 | DO_2D( 0, 0, 0, 0 ) |
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[13237] | 150 | pts(ji,jj,1,jn,Krhs) = pts(ji,jj,1,jn,Krhs) + zfact * ( sbc_tsc_b(ji,jj,jn) + sbc_tsc(ji,jj,jn) ) & |
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| 151 | & / e3t(ji,jj,1,Kmm) |
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[12377] | 152 | END_2D |
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[3] | 153 | END DO |
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[14072] | 154 | ! |
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[14834] | 155 | IF( .NOT. l_istiled .OR. ntile == nijtile ) THEN ! Do only on the last tile |
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[13982] | 156 | IF( lrst_oce ) THEN !== write sbc_tsc in the ocean restart file ==! |
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| 157 | CALL iom_rstput( kt, nitrst, numrow, 'sbc_hc_b', sbc_tsc(:,:,jp_tem) ) |
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| 158 | CALL iom_rstput( kt, nitrst, numrow, 'sbc_sc_b', sbc_tsc(:,:,jp_sal) ) |
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| 159 | ENDIF |
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[2528] | 160 | ENDIF |
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| 161 | ! |
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| 162 | !---------------------------------------- |
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| 163 | ! River Runoff effects |
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| 164 | !---------------------------------------- |
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| 165 | ! |
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[14072] | 166 | IF( ln_rnf ) THEN ! input of heat and salt due to river runoff |
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[3764] | 167 | zfact = 0.5_wp |
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[13982] | 168 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 169 | IF( rnf(ji,jj) /= 0._wp ) THEN |
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| 170 | zdep = zfact / h_rnf(ji,jj) |
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| 171 | DO jk = 1, nk_rnf(ji,jj) |
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| 172 | pts(ji,jj,jk,jp_tem,Krhs) = pts(ji,jj,jk,jp_tem,Krhs) & |
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| 173 | & + ( rnf_tsc_b(ji,jj,jp_tem) + rnf_tsc(ji,jj,jp_tem) ) * zdep |
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| 174 | IF( ln_rnf_sal ) pts(ji,jj,jk,jp_sal,Krhs) = pts(ji,jj,jk,jp_sal,Krhs) & |
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[14072] | 175 | & + ( rnf_tsc_b(ji,jj,jp_sal) + rnf_tsc(ji,jj,jp_sal) ) * zdep |
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[12377] | 176 | END DO |
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| 177 | ENDIF |
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| 178 | END_2D |
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[3764] | 179 | ENDIF |
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[6472] | 180 | |
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[14834] | 181 | IF( iom_use('rnf_x_sst') ) CALL iom_put( "rnf_x_sst", rnf*pts(:,:,1,jp_tem,Kmm) ) ! runoff term on sst |
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| 182 | IF( iom_use('rnf_x_sss') ) CALL iom_put( "rnf_x_sss", rnf*pts(:,:,1,jp_sal,Kmm) ) ! runoff term on sss |
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[6472] | 183 | |
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[9023] | 184 | #if defined key_asminc |
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[6140] | 185 | ! |
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| 186 | !---------------------------------------- |
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[9023] | 187 | ! Assmilation effects |
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| 188 | !---------------------------------------- |
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| 189 | ! |
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| 190 | IF( ln_sshinc ) THEN ! input of heat and salt due to assimilation |
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| 191 | ! |
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[14072] | 192 | IF( ln_linssh ) THEN |
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[13982] | 193 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 194 | ztim = ssh_iau(ji,jj) / e3t(ji,jj,1,Kmm) |
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| 195 | pts(ji,jj,1,jp_tem,Krhs) = pts(ji,jj,1,jp_tem,Krhs) + pts(ji,jj,1,jp_tem,Kmm) * ztim |
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| 196 | pts(ji,jj,1,jp_sal,Krhs) = pts(ji,jj,1,jp_sal,Krhs) + pts(ji,jj,1,jp_sal,Kmm) * ztim |
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| 197 | END_2D |
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[9023] | 198 | ELSE |
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[13982] | 199 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 200 | ztim = ssh_iau(ji,jj) / ( ht(ji,jj) + 1. - ssmask(ji, jj) ) |
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| 201 | pts(ji,jj,:,jp_tem,Krhs) = pts(ji,jj,:,jp_tem,Krhs) + pts(ji,jj,:,jp_tem,Kmm) * ztim |
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| 202 | pts(ji,jj,:,jp_sal,Krhs) = pts(ji,jj,:,jp_sal,Krhs) + pts(ji,jj,:,jp_sal,Kmm) * ztim |
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| 203 | END_2D |
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[9023] | 204 | ENDIF |
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| 205 | ! |
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| 206 | ENDIF |
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| 207 | ! |
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| 208 | #endif |
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| 209 | ! |
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[6140] | 210 | IF( l_trdtra ) THEN ! save the horizontal diffusive trends for further diagnostics |
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[12377] | 211 | ztrdt(:,:,:) = pts(:,:,:,jp_tem,Krhs) - ztrdt(:,:,:) |
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| 212 | ztrds(:,:,:) = pts(:,:,:,jp_sal,Krhs) - ztrds(:,:,:) |
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| 213 | CALL trd_tra( kt, Kmm, Krhs, 'TRA', jp_tem, jptra_nsr, ztrdt ) |
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| 214 | CALL trd_tra( kt, Kmm, Krhs, 'TRA', jp_sal, jptra_nsr, ztrds ) |
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[13982] | 215 | DEALLOCATE( ztrdt , ztrds ) |
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[216] | 216 | ENDIF |
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[503] | 217 | ! |
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[12377] | 218 | IF(sn_cfctl%l_prtctl) CALL prt_ctl( tab3d_1=pts(:,:,:,jp_tem,Krhs), clinfo1=' sbc - Ta: ', mask1=tmask, & |
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| 219 | & tab3d_2=pts(:,:,:,jp_sal,Krhs), clinfo2= ' Sa: ', mask2=tmask, clinfo3='tra' ) |
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[503] | 220 | ! |
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[9019] | 221 | IF( ln_timing ) CALL timing_stop('tra_sbc') |
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[3294] | 222 | ! |
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[3] | 223 | END SUBROUTINE tra_sbc |
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| 224 | |
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| 225 | !!====================================================================== |
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| 226 | END MODULE trasbc |
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