[11395] | 1 | MODULE traisf |
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| 2 | !!============================================================================== |
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[11403] | 3 | !! *** MODULE traisf *** |
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| 4 | !! Ocean active tracers: ice shelf boundary condition |
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[11395] | 5 | !!============================================================================== |
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| 6 | !! History : 4.0 ! 2019-09 (P. Mathiot) original file |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! tra_isf : update the tracer trend at ocean surface |
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| 11 | !!---------------------------------------------------------------------- |
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[12077] | 12 | USE isf_oce ! Ice shelf variables |
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[12606] | 13 | USE dom_oce ! ocean space domain variables |
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[12077] | 14 | USE isfutils, ONLY : debug ! debug option |
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| 15 | USE timing , ONLY : timing_start, timing_stop ! Timing |
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| 16 | USE in_out_manager ! I/O manager |
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[11395] | 17 | |
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| 18 | IMPLICIT NONE |
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| 19 | PRIVATE |
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| 20 | |
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| 21 | PUBLIC tra_isf ! routine called by step.F90 |
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| 22 | |
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| 23 | !! * Substitutions |
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[12340] | 24 | # include "do_loop_substitute.h90" |
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[12606] | 25 | # include "domzgr_substitute.h90" |
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[11395] | 26 | !!---------------------------------------------------------------------- |
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| 27 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 28 | !! $Id: trasbc.F90 10499 2019-01-10 15:12:24Z deazer $ |
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| 29 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 30 | !!---------------------------------------------------------------------- |
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| 31 | CONTAINS |
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| 32 | |
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[12068] | 33 | SUBROUTINE tra_isf ( kt, Kmm, pts, Krhs ) |
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[11395] | 34 | !!---------------------------------------------------------------------- |
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[11403] | 35 | !! *** ROUTINE tra_isf *** |
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[12590] | 36 | !! |
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[11403] | 37 | !! ** Purpose : Compute the temperature trend due to the ice shelf melting (qhoce + qhc) |
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[11395] | 38 | !! |
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[12068] | 39 | !! ** Action : - update pts(:,:,:,:,Krhs) for cav, par and cpl case |
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[11395] | 40 | !!---------------------------------------------------------------------- |
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[12068] | 41 | INTEGER , INTENT(in ) :: kt ! ocean time step |
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| 42 | INTEGER , INTENT(in ) :: Kmm, Krhs ! ocean time level indices |
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| 43 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpts,jpt), INTENT(inout) :: pts ! active tracers and RHS of tracer equation |
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[11395] | 44 | !!---------------------------------------------------------------------- |
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| 45 | ! |
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[11529] | 46 | IF( ln_timing ) CALL timing_start('tra_isf') |
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[11395] | 47 | ! |
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[11902] | 48 | IF( kt == nit000 ) THEN |
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| 49 | IF(lwp) WRITE(numout,*) |
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| 50 | IF(lwp) WRITE(numout,*) 'tra_isf : Ice shelf heat fluxes' |
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| 51 | IF(lwp) WRITE(numout,*) '~~~~~~~ ' |
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| 52 | ENDIF |
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| 53 | ! |
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[11541] | 54 | ! cavity case |
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[12068] | 55 | IF ( ln_isfcav_mlt ) CALL tra_isf_mlt(misfkt_cav, misfkb_cav, rhisf_tbl_cav, rfrac_tbl_cav, risf_cav_tsc, risf_cav_tsc_b, pts(:,:,:,:,Krhs)) |
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[11403] | 56 | ! |
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[11541] | 57 | ! parametrisation case |
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[12068] | 58 | IF ( ln_isfpar_mlt ) CALL tra_isf_mlt(misfkt_par, misfkb_par, rhisf_tbl_par, rfrac_tbl_par, risf_par_tsc, risf_par_tsc_b, pts(:,:,:,:,Krhs)) |
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[11541] | 59 | ! |
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[11403] | 60 | ! ice sheet coupling case |
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[11541] | 61 | IF ( ln_isfcpl ) THEN |
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[11521] | 62 | ! |
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[12077] | 63 | ! Dynamical stability at start up after change in under ice shelf cavity geometry is achieve by correcting the divergence. |
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[12590] | 64 | ! This is achieved by applying a volume flux in order to keep the horizontal divergence after remapping |
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[12077] | 65 | ! the same as at the end of the latest time step. So correction need to be apply at nit000 (euler time step) and |
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| 66 | ! half of it at nit000+1 (leap frog time step). |
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| 67 | ! in accordance to this, the heat content flux due to injected water need to be added in the temperature and salt trend |
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| 68 | ! at time step nit000 and nit000+1 |
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[12068] | 69 | IF ( kt == nit000 ) CALL tra_isf_cpl(Kmm, risfcpl_tsc , pts(:,:,:,:,Krhs)) |
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| 70 | IF ( kt == nit000+1) CALL tra_isf_cpl(Kmm, risfcpl_tsc*0.5_wp, pts(:,:,:,:,Krhs)) |
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[11521] | 71 | ! |
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| 72 | ! ensure 0 trend due to unconservation of the ice shelf coupling |
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[12068] | 73 | IF ( ln_isfcpl_cons ) CALL tra_isf_cpl(Kmm, risfcpl_cons_tsc, pts(:,:,:,:,Krhs)) |
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[11521] | 74 | ! |
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| 75 | END IF |
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[11395] | 76 | ! |
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[11902] | 77 | IF ( ln_isfdebug ) THEN |
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[12068] | 78 | CALL debug('tra_isf: pts(:,:,:,:,Krhs) T', pts(:,:,:,1,Krhs)) |
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| 79 | CALL debug('tra_isf: pts(:,:,:,:,Krhs) S', pts(:,:,:,2,Krhs)) |
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[11902] | 80 | END IF |
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| 81 | ! |
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[11395] | 82 | IF( ln_timing ) CALL timing_stop('tra_isf') |
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| 83 | ! |
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| 84 | END SUBROUTINE tra_isf |
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| 85 | ! |
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| 86 | SUBROUTINE tra_isf_mlt(ktop, kbot, phtbl, pfrac, ptsc, ptsc_b, pts) |
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| 87 | !!---------------------------------------------------------------------- |
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[11403] | 88 | !! *** ROUTINE tra_isf_mlt *** |
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| 89 | !! |
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| 90 | !! *** Purpose : Compute the temperature trend due to the ice shelf melting (qhoce + qhc) for cav or par case |
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| 91 | !! |
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[12590] | 92 | !! *** Action :: Update pts(:,:,:,:,Krhs) with the surface boundary condition trend |
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[11403] | 93 | !! |
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| 94 | !!---------------------------------------------------------------------- |
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[11395] | 95 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpts), INTENT(inout) :: pts |
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| 96 | !!---------------------------------------------------------------------- |
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| 97 | INTEGER , DIMENSION(jpi,jpj) , INTENT(in ) :: ktop , kbot |
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| 98 | REAL(wp), DIMENSION(jpi,jpj) , INTENT(in ) :: phtbl, pfrac |
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| 99 | REAL(wp), DIMENSION(jpi,jpj,jpts), INTENT(in ) :: ptsc , ptsc_b |
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| 100 | !!---------------------------------------------------------------------- |
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[12590] | 101 | INTEGER :: ji,jj,jk ! loop index |
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[11403] | 102 | INTEGER :: ikt, ikb ! top and bottom level of the tbl |
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| 103 | REAL(wp), DIMENSION(jpi,jpj) :: ztc ! total ice shelf tracer trend |
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| 104 | !!---------------------------------------------------------------------- |
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[11395] | 105 | ! |
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| 106 | ! compute 2d total trend due to isf |
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| 107 | ztc(:,:) = 0.5_wp * ( ptsc(:,:,jp_tem) + ptsc_b(:,:,jp_tem) ) / phtbl(:,:) |
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| 108 | ! |
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[12068] | 109 | ! update pts(:,:,:,:,Krhs) |
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[12340] | 110 | DO_2D_11_11 |
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| 111 | ! |
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| 112 | ikt = ktop(ji,jj) |
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| 113 | ikb = kbot(ji,jj) |
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| 114 | ! |
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| 115 | ! level fully include in the ice shelf boundary layer |
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| 116 | DO jk = ikt, ikb - 1 |
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| 117 | pts(ji,jj,jk,jp_tem) = pts(ji,jj,jk,jp_tem) + ztc(ji,jj) |
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[11395] | 118 | END DO |
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[12340] | 119 | ! |
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[12590] | 120 | ! level partially include in ice shelf boundary layer |
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[12340] | 121 | pts(ji,jj,ikb,jp_tem) = pts(ji,jj,ikb,jp_tem) + ztc(ji,jj) * pfrac(ji,jj) |
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| 122 | ! |
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| 123 | END_2D |
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[11395] | 124 | ! |
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| 125 | END SUBROUTINE tra_isf_mlt |
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| 126 | ! |
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[12068] | 127 | SUBROUTINE tra_isf_cpl( Kmm, ptsc, ptsa ) |
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[11423] | 128 | !!---------------------------------------------------------------------- |
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| 129 | !! *** ROUTINE tra_isf_cpl *** |
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| 130 | !! |
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[12590] | 131 | !! *** Action :: Update pts(:,:,:,:,Krhs) with the ice shelf coupling trend |
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[11423] | 132 | !! |
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| 133 | !!---------------------------------------------------------------------- |
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| 134 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpts), INTENT(inout) :: ptsa |
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| 135 | !!---------------------------------------------------------------------- |
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[12068] | 136 | INTEGER , INTENT(in ) :: Kmm ! ocean time level index |
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[11521] | 137 | REAL(wp), DIMENSION(jpi,jpj,jpk,jpts), INTENT(in ) :: ptsc |
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[11423] | 138 | !!---------------------------------------------------------------------- |
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| 139 | INTEGER :: jk |
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| 140 | !!---------------------------------------------------------------------- |
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| 141 | ! |
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| 142 | DO jk = 1,jpk |
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[12606] | 143 | ptsa(:,:,jk,jp_tem) = & |
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| 144 | & ptsa(:,:,jk,jp_tem) + ptsc(:,:,jk,jp_tem) * r1_e1e2t(:,:) / e3t(:,:,jk,Kmm) |
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| 145 | ptsa(:,:,jk,jp_sal) = & |
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| 146 | & ptsa(:,:,jk,jp_sal) + ptsc(:,:,jk,jp_sal) * r1_e1e2t(:,:) / e3t(:,:,jk,Kmm) |
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[11423] | 147 | END DO |
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| 148 | ! |
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| 149 | END SUBROUTINE tra_isf_cpl |
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[11395] | 150 | ! |
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| 151 | END MODULE traisf |
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