[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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[14219] | 46 | # include "single_precision_substitute.h90" |
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[3] | 47 | !!---------------------------------------------------------------------- |
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[9598] | 48 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[888] | 49 | !! $Id$ |
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[10068] | 50 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3] | 51 | !!---------------------------------------------------------------------- |
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| 52 | CONTAINS |
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| 53 | |
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[12377] | 54 | SUBROUTINE tra_sbc ( kt, Kmm, pts, Krhs ) |
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[3] | 55 | !!---------------------------------------------------------------------- |
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| 56 | !! *** ROUTINE tra_sbc *** |
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[14072] | 57 | !! |
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[3] | 58 | !! ** Purpose : Compute the tracer surface boundary condition trend of |
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| 59 | !! (flux through the interface, concentration/dilution effect) |
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| 60 | !! and add it to the general trend of tracer equations. |
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| 61 | !! |
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[14072] | 62 | !! ** Method : The (air+ice)-sea flux has two components: |
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| 63 | !! (1) Fext, external forcing (i.e. flux through the (air+ice)-sea interface); |
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| 64 | !! (2) Fwe , tracer carried with the water that is exchanged with air+ice. |
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[12377] | 65 | !! The input forcing fields (emp, rnf, sfx) contain Fext+Fwe, |
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| 66 | !! they are simply added to the tracer trend (ts(Krhs)). |
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[6140] | 67 | !! In linear free surface case (ln_linssh=T), the volume of the |
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| 68 | !! ocean does not change with the water exchanges at the (air+ice)-sea |
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| 69 | !! interface. Therefore another term has to be added, to mimic the |
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| 70 | !! concentration/dilution effect associated with water exchanges. |
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[664] | 71 | !! |
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[14072] | 72 | !! ** Action : - Update ts(Krhs) with the surface boundary condition trend |
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[6140] | 73 | !! - send trends to trdtra module for further diagnostics(l_trdtra=T) |
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[503] | 74 | !!---------------------------------------------------------------------- |
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[14219] | 75 | INTEGER, INTENT(in ) :: kt ! ocean time-step index |
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| 76 | INTEGER, INTENT(in ) :: Kmm, Krhs ! time level indices |
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| 77 | REAL(dp), DIMENSION(jpi,jpj,jpk,jpts,jpt), INTENT(inout) :: pts ! active tracers and RHS of tracer equation |
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[6140] | 78 | ! |
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[13982] | 79 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
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[14986] | 80 | INTEGER :: ikt, ikb ! local integers |
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[13982] | 81 | REAL(wp) :: zfact, z1_e3t, zdep, ztim ! local scalar |
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[9019] | 82 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrdt, ztrds |
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[3] | 83 | !!---------------------------------------------------------------------- |
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[3294] | 84 | ! |
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[9019] | 85 | IF( ln_timing ) CALL timing_start('tra_sbc') |
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[3294] | 86 | ! |
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[14986] | 87 | IF( .NOT. l_istiled .OR. ntile == 1 ) THEN ! Do only on the first tile |
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[13982] | 88 | IF( kt == nit000 ) THEN |
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| 89 | IF(lwp) WRITE(numout,*) |
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| 90 | IF(lwp) WRITE(numout,*) 'tra_sbc : TRAcer Surface Boundary Condition' |
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| 91 | IF(lwp) WRITE(numout,*) '~~~~~~~ ' |
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| 92 | ENDIF |
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[3] | 93 | ENDIF |
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[6140] | 94 | ! |
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[4990] | 95 | IF( l_trdtra ) THEN !* Save ta and sa trends |
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[13982] | 96 | ALLOCATE( ztrdt(jpi,jpj,jpk), ztrds(jpi,jpj,jpk) ) |
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[12377] | 97 | ztrdt(:,:,:) = pts(:,:,:,jp_tem,Krhs) |
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| 98 | ztrds(:,:,:) = pts(:,:,:,jp_sal,Krhs) |
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[216] | 99 | ENDIF |
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[6140] | 100 | ! |
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| 101 | !!gm This should be moved into sbcmod.F90 module ? (especially now that ln_traqsr is read in namsbc namelist) |
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[2528] | 102 | IF( .NOT.ln_traqsr ) THEN ! no solar radiation penetration |
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[14986] | 103 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[13982] | 104 | qns(ji,jj) = qns(ji,jj) + qsr(ji,jj) ! total heat flux in qns |
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| 105 | qsr(ji,jj) = 0._wp ! qsr set to zero |
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| 106 | END_2D |
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[2528] | 107 | ENDIF |
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[3] | 108 | |
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[2528] | 109 | !---------------------------------------- |
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[4990] | 110 | ! EMP, SFX and QNS effects |
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[2528] | 111 | !---------------------------------------- |
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[6140] | 112 | ! !== Set before sbc tracer content fields ==! |
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| 113 | IF( kt == nit000 ) THEN !* 1st time-step |
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[14053] | 114 | IF( ln_rstart .AND. .NOT.l_1st_euler ) THEN ! Restart: read in restart file |
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[4990] | 115 | zfact = 0.5_wp |
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[14986] | 116 | IF( .NOT. l_istiled .OR. ntile == 1 ) THEN ! Do only on the first tile |
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[13982] | 117 | IF(lwp) WRITE(numout,*) ' nit000-1 sbc tracer content field read in the restart file' |
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| 118 | sbc_tsc(:,:,:) = 0._wp |
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| 119 | CALL iom_get( numror, jpdom_auto, 'sbc_hc_b', sbc_tsc_b(:,:,jp_tem) ) ! before heat content sbc trend |
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| 120 | CALL iom_get( numror, jpdom_auto, 'sbc_sc_b', sbc_tsc_b(:,:,jp_sal) ) ! before salt content sbc trend |
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| 121 | ENDIF |
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[14053] | 122 | ELSE ! No restart or restart not found: Euler forward time stepping |
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[4990] | 123 | zfact = 1._wp |
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[14986] | 124 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[13982] | 125 | sbc_tsc(ji,jj,:) = 0._wp |
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| 126 | sbc_tsc_b(ji,jj,:) = 0._wp |
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| 127 | END_2D |
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[2528] | 128 | ENDIF |
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[6140] | 129 | ELSE !* other time-steps: swap of forcing fields |
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[4990] | 130 | zfact = 0.5_wp |
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[14986] | 131 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[13982] | 132 | sbc_tsc_b(ji,jj,:) = sbc_tsc(ji,jj,:) |
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| 133 | END_2D |
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[2528] | 134 | ENDIF |
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[6140] | 135 | ! !== Now sbc tracer content fields ==! |
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[14986] | 136 | DO_2D_OVR( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[12489] | 137 | sbc_tsc(ji,jj,jp_tem) = r1_rho0_rcp * qns(ji,jj) ! non solar heat flux |
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| 138 | sbc_tsc(ji,jj,jp_sal) = r1_rho0 * sfx(ji,jj) ! salt flux due to freezing/melting |
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[12377] | 139 | END_2D |
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[14072] | 140 | IF( ln_linssh ) THEN !* linear free surface |
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[14986] | 141 | 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] | 142 | 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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| 143 | 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] | 144 | END_2D !==>> output c./d. term |
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[14986] | 145 | IF( iom_use('emp_x_sst') ) CALL iom_put( "emp_x_sst", emp (:,:) * pts(:,:,1,jp_tem,Kmm) ) |
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| 146 | IF( iom_use('emp_x_sss') ) CALL iom_put( "emp_x_sss", emp (:,:) * pts(:,:,1,jp_sal,Kmm) ) |
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[2528] | 147 | ENDIF |
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[6140] | 148 | ! |
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| 149 | DO jn = 1, jpts !== update tracer trend ==! |
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[13982] | 150 | DO_2D( 0, 0, 0, 0 ) |
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[13237] | 151 | 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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| 152 | & / e3t(ji,jj,1,Kmm) |
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[12377] | 153 | END_2D |
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[3] | 154 | END DO |
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[14072] | 155 | ! |
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[14986] | 156 | IF( .NOT. l_istiled .OR. ntile == nijtile ) THEN ! Do only on the last tile |
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[13982] | 157 | IF( lrst_oce ) THEN !== write sbc_tsc in the ocean restart file ==! |
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| 158 | CALL iom_rstput( kt, nitrst, numrow, 'sbc_hc_b', sbc_tsc(:,:,jp_tem) ) |
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| 159 | CALL iom_rstput( kt, nitrst, numrow, 'sbc_sc_b', sbc_tsc(:,:,jp_sal) ) |
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| 160 | ENDIF |
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[2528] | 161 | ENDIF |
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| 162 | ! |
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| 163 | !---------------------------------------- |
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| 164 | ! River Runoff effects |
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| 165 | !---------------------------------------- |
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| 166 | ! |
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[14072] | 167 | IF( ln_rnf ) THEN ! input of heat and salt due to river runoff |
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[3764] | 168 | zfact = 0.5_wp |
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[13982] | 169 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 170 | IF( rnf(ji,jj) /= 0._wp ) THEN |
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| 171 | zdep = zfact / h_rnf(ji,jj) |
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| 172 | DO jk = 1, nk_rnf(ji,jj) |
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| 173 | pts(ji,jj,jk,jp_tem,Krhs) = pts(ji,jj,jk,jp_tem,Krhs) & |
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| 174 | & + ( rnf_tsc_b(ji,jj,jp_tem) + rnf_tsc(ji,jj,jp_tem) ) * zdep |
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| 175 | IF( ln_rnf_sal ) pts(ji,jj,jk,jp_sal,Krhs) = pts(ji,jj,jk,jp_sal,Krhs) & |
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[14072] | 176 | & + ( rnf_tsc_b(ji,jj,jp_sal) + rnf_tsc(ji,jj,jp_sal) ) * zdep |
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[12377] | 177 | END DO |
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| 178 | ENDIF |
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| 179 | END_2D |
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[3764] | 180 | ENDIF |
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[6472] | 181 | |
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[14986] | 182 | 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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| 183 | 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] | 184 | |
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[9023] | 185 | #if defined key_asminc |
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[6140] | 186 | ! |
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| 187 | !---------------------------------------- |
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[9023] | 188 | ! Assmilation effects |
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| 189 | !---------------------------------------- |
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| 190 | ! |
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| 191 | IF( ln_sshinc ) THEN ! input of heat and salt due to assimilation |
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| 192 | ! |
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[14072] | 193 | IF( ln_linssh ) THEN |
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[13982] | 194 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 195 | ztim = ssh_iau(ji,jj) / e3t(ji,jj,1,Kmm) |
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| 196 | 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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| 197 | 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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| 198 | END_2D |
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[9023] | 199 | ELSE |
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[13982] | 200 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 201 | ztim = ssh_iau(ji,jj) / ( ht(ji,jj) + 1. - ssmask(ji, jj) ) |
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| 202 | pts(ji,jj,:,jp_tem,Krhs) = pts(ji,jj,:,jp_tem,Krhs) + pts(ji,jj,:,jp_tem,Kmm) * ztim |
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| 203 | pts(ji,jj,:,jp_sal,Krhs) = pts(ji,jj,:,jp_sal,Krhs) + pts(ji,jj,:,jp_sal,Kmm) * ztim |
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| 204 | END_2D |
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[9023] | 205 | ENDIF |
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| 206 | ! |
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| 207 | ENDIF |
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| 208 | ! |
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| 209 | #endif |
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| 210 | ! |
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[6140] | 211 | IF( l_trdtra ) THEN ! save the horizontal diffusive trends for further diagnostics |
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[12377] | 212 | ztrdt(:,:,:) = pts(:,:,:,jp_tem,Krhs) - ztrdt(:,:,:) |
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| 213 | ztrds(:,:,:) = pts(:,:,:,jp_sal,Krhs) - ztrds(:,:,:) |
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| 214 | CALL trd_tra( kt, Kmm, Krhs, 'TRA', jp_tem, jptra_nsr, ztrdt ) |
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| 215 | CALL trd_tra( kt, Kmm, Krhs, 'TRA', jp_sal, jptra_nsr, ztrds ) |
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[13982] | 216 | DEALLOCATE( ztrdt , ztrds ) |
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[216] | 217 | ENDIF |
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[503] | 218 | ! |
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[14219] | 219 | IF(sn_cfctl%l_prtctl) CALL prt_ctl( tab3d_1=CASTWP(pts(:,:,:,jp_tem,Krhs)), clinfo1=' sbc - Ta: ', mask1=tmask, & |
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| 220 | & tab3d_2=CASTWP(pts(:,:,:,jp_sal,Krhs)), clinfo2= ' Sa: ', mask2=tmask, clinfo3='tra' ) |
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[503] | 221 | ! |
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[9019] | 222 | IF( ln_timing ) CALL timing_stop('tra_sbc') |
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[3294] | 223 | ! |
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[3] | 224 | END SUBROUTINE tra_sbc |
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| 225 | |
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| 226 | !!====================================================================== |
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| 227 | END MODULE trasbc |
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