[941] | 1 | MODULE trcrad |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE trcrad *** |
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| 4 | !! Ocean passive tracers: correction of negative concentrations |
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| 5 | !!====================================================================== |
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| 6 | !! History : - ! 01-01 (O. Aumont & E. Kestenare) Original code |
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| 7 | !! 1.0 ! 04-03 (C. Ethe) free form F90 |
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| 8 | !!---------------------------------------------------------------------- |
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| 9 | #if defined key_top |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! 'key_top' TOP models |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! trc_rad : correction of negative concentrations |
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| 14 | !!---------------------------------------------------------------------- |
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[9788] | 15 | USE par_trc ! need jptra, number of passive tracers |
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[941] | 16 | USE oce_trc ! ocean dynamics and tracers variables |
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[2528] | 17 | USE trc ! ocean passive tracers variables |
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[4990] | 18 | USE trd_oce |
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[2528] | 19 | USE trdtra |
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[941] | 20 | USE prtctl_trc ! Print control for debbuging |
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[10425] | 21 | USE lib_fortran |
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[941] | 22 | |
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| 23 | IMPLICIT NONE |
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| 24 | PRIVATE |
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| 25 | |
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[5836] | 26 | PUBLIC trc_rad |
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| 27 | PUBLIC trc_rad_ini |
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[941] | 28 | |
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[5836] | 29 | LOGICAL , PUBLIC :: ln_trcrad !: flag to artificially correct negative concentrations |
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[10425] | 30 | REAL(wp), DIMENSION(:,:), ALLOCATABLE:: gainmass |
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[5836] | 31 | |
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[941] | 32 | !!---------------------------------------------------------------------- |
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[10067] | 33 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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[7753] | 34 | !! $Id$ |
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[10068] | 35 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[941] | 36 | !!---------------------------------------------------------------------- |
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| 37 | CONTAINS |
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| 38 | |
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| 39 | SUBROUTINE trc_rad( kt ) |
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| 40 | !!---------------------------------------------------------------------- |
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| 41 | !! *** ROUTINE trc_rad *** |
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| 42 | !! |
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| 43 | !! ** Purpose : "crappy" routine to correct artificial negative |
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| 44 | !! concentrations due to isopycnal scheme |
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| 45 | !! |
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| 46 | !! ** Method : - PISCES or LOBSTER: Set negative concentrations to zero |
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| 47 | !! while computing the corresponding tracer content that |
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| 48 | !! is added to the tracers. Then, adjust the tracer |
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| 49 | !! concentration using a multiplicative factor so that |
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| 50 | !! the total tracer concentration is preserved. |
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| 51 | !! - CFC: simply set to zero the negative CFC concentration |
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| 52 | !! (the total CFC content is not strictly preserved) |
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| 53 | !!---------------------------------------------------------------------- |
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[9169] | 54 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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| 55 | ! |
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[941] | 56 | CHARACTER (len=22) :: charout |
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| 57 | !!---------------------------------------------------------------------- |
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[3294] | 58 | ! |
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[9124] | 59 | IF( ln_timing ) CALL timing_start('trc_rad') |
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[3294] | 60 | ! |
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[9169] | 61 | IF( ln_age ) CALL trc_rad_sms( kt, trb, trn, jp_age , jp_age ) ! AGE |
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[7646] | 62 | IF( ll_cfc ) CALL trc_rad_sms( kt, trb, trn, jp_cfc0, jp_cfc1 ) ! CFC model |
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[9169] | 63 | IF( ln_c14 ) CALL trc_rad_sms( kt, trb, trn, jp_c14 , jp_c14 ) ! C14 |
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[7646] | 64 | IF( ln_pisces ) CALL trc_rad_sms( kt, trb, trn, jp_pcs0, jp_pcs1, cpreserv='Y' ) ! PISCES model |
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| 65 | IF( ln_my_trc ) CALL trc_rad_sms( kt, trb, trn, jp_myt0, jp_myt1 ) ! MY_TRC model |
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[1003] | 66 | ! |
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| 67 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 68 | WRITE(charout, FMT="('rad')") |
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| 69 | CALL prt_ctl_trc_info( charout ) |
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| 70 | CALL prt_ctl_trc( tab4d=trn, mask=tmask, clinfo=ctrcnm ) |
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| 71 | ENDIF |
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| 72 | ! |
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[9124] | 73 | IF( ln_timing ) CALL timing_stop('trc_rad') |
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[3294] | 74 | ! |
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[1003] | 75 | END SUBROUTINE trc_rad |
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| 76 | |
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[9169] | 77 | |
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[5836] | 78 | SUBROUTINE trc_rad_ini |
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| 79 | !!--------------------------------------------------------------------- |
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| 80 | !! *** ROUTINE trc _rad_ini *** |
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| 81 | !! |
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[9169] | 82 | !! ** Purpose : read namelist options |
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[5836] | 83 | !!---------------------------------------------------------------------- |
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[9169] | 84 | INTEGER :: ios ! Local integer output status for namelist read |
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| 85 | !! |
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[5836] | 86 | NAMELIST/namtrc_rad/ ln_trcrad |
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| 87 | !!---------------------------------------------------------------------- |
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| 88 | ! |
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| 89 | READ ( numnat_ref, namtrc_rad, IOSTAT = ios, ERR = 907) |
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[11536] | 90 | 907 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_rad in reference namelist' ) |
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[5836] | 91 | READ ( numnat_cfg, namtrc_rad, IOSTAT = ios, ERR = 908 ) |
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[11536] | 92 | 908 IF( ios > 0 ) CALL ctl_nam ( ios , 'namtrc_rad in configuration namelist' ) |
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[9169] | 93 | IF(lwm) WRITE( numont, namtrc_rad ) |
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[5836] | 94 | |
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| 95 | IF(lwp) THEN ! ! Control print |
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| 96 | WRITE(numout,*) |
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[9169] | 97 | WRITE(numout,*) 'trc_rad : Correct artificial negative concentrations ' |
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| 98 | WRITE(numout,*) '~~~~~~~ ' |
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[5836] | 99 | WRITE(numout,*) ' Namelist namtrc_rad : treatment of negative concentrations' |
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[9169] | 100 | WRITE(numout,*) ' correct artificially negative concen. or not ln_trcrad = ', ln_trcrad |
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| 101 | WRITE(numout,*) |
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| 102 | IF( ln_trcrad ) THEN ; WRITE(numout,*) ' ===>> ensure the global tracer conservation' |
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| 103 | ELSE ; WRITE(numout,*) ' ===>> NO strict global tracer conservation' |
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| 104 | ENDIF |
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[5836] | 105 | ENDIF |
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| 106 | ! |
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[10425] | 107 | ALLOCATE( gainmass(jptra,2) ) |
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| 108 | gainmass(:,:) = 0. |
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| 109 | ! |
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[5836] | 110 | END SUBROUTINE trc_rad_ini |
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| 111 | |
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[9169] | 112 | |
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[1175] | 113 | SUBROUTINE trc_rad_sms( kt, ptrb, ptrn, jp_sms0, jp_sms1, cpreserv ) |
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[1003] | 114 | !!----------------------------------------------------------------------------- |
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| 115 | !! *** ROUTINE trc_rad_sms *** |
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| 116 | !! |
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| 117 | !! ** Purpose : "crappy" routine to correct artificial negative |
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| 118 | !! concentrations due to isopycnal scheme |
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| 119 | !! |
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| 120 | !! ** Method : 2 cases : |
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| 121 | !! - Set negative concentrations to zero while computing |
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| 122 | !! the corresponding tracer content that is added to the |
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| 123 | !! tracers. Then, adjust the tracer concentration using |
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| 124 | !! a multiplicative factor so that the total tracer |
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| 125 | !! concentration is preserved. |
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| 126 | !! - simply set to zero the negative CFC concentration |
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| 127 | !! (the total content of concentration is not strictly preserved) |
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| 128 | !!-------------------------------------------------------------------------------- |
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[9169] | 129 | INTEGER , INTENT(in ) :: kt ! ocean time-step index |
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| 130 | INTEGER , INTENT(in ) :: jp_sms0, jp_sms1 ! First & last index of the passive tracer model |
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| 131 | REAL(wp), DIMENSION (jpi,jpj,jpk,jptra), INTENT(inout) :: ptrb , ptrn ! before and now traceur concentration |
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| 132 | CHARACTER( len = 1), OPTIONAL , INTENT(in ) :: cpreserv ! flag to preserve content or not |
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| 133 | ! |
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[10425] | 134 | INTEGER :: ji, ji2, jj, jj2, jk, jn ! dummy loop indices |
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| 135 | INTEGER :: icnt |
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| 136 | LOGICAL :: lldebug = .FALSE. ! local logical |
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| 137 | REAL(wp):: zcoef, zs2rdt, ztotmass |
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| 138 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrneg, ztrpos |
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| 139 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrtrd ! workspace arrays |
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[1003] | 140 | !!---------------------------------------------------------------------- |
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[9169] | 141 | ! |
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[10425] | 142 | IF( l_trdtrc ) ALLOCATE( ztrtrd(jpi,jpj,jpk) ) |
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| 143 | zs2rdt = 1. / ( 2. * rdt * REAL( nn_dttrc, wp ) ) |
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[9169] | 144 | ! |
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| 145 | IF( PRESENT( cpreserv ) ) THEN !== total tracer concentration is preserved ==! |
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| 146 | ! |
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[10425] | 147 | ALLOCATE( ztrneg(1:jpi,1:jpj,jp_sms0:jp_sms1), ztrpos(1:jpi,1:jpj,jp_sms0:jp_sms1) ) |
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| 148 | |
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[1003] | 149 | DO jn = jp_sms0, jp_sms1 |
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[10425] | 150 | ztrneg(:,:,jn) = SUM( MIN( 0., ptrb(:,:,:,jn) ) * cvol(:,:,:), dim = 3 ) ! sum of the negative values |
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| 151 | ztrpos(:,:,jn) = SUM( MAX( 0., ptrb(:,:,:,jn) ) * cvol(:,:,:), dim = 3 ) ! sum of the positive values |
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| 152 | END DO |
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| 153 | CALL sum3x3( ztrneg ) |
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| 154 | CALL sum3x3( ztrpos ) |
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| 155 | |
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| 156 | DO jn = jp_sms0, jp_sms1 |
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[9169] | 157 | ! |
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[10425] | 158 | IF( l_trdtrc ) ztrtrd(:,:,:) = ptrb(:,:,:,jn) ! save input trb for trend computation |
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[9169] | 159 | ! |
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[10425] | 160 | DO jk = 1, jpkm1 |
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| 161 | DO jj = 1, jpj |
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| 162 | DO ji = 1, jpi |
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| 163 | IF( ztrneg(ji,jj,jn) /= 0. ) THEN ! if negative values over the 3x3 box |
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| 164 | ! |
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| 165 | ptrb(ji,jj,jk,jn) = ptrb(ji,jj,jk,jn) * tmask(ji,jj,jk) ! really needed? |
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| 166 | IF( ptrb(ji,jj,jk,jn) < 0. ) ptrb(ji,jj,jk,jn) = 0. ! supress negative values |
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| 167 | IF( ptrb(ji,jj,jk,jn) > 0. ) THEN ! use positive values to compensate mass gain |
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| 168 | zcoef = 1. + ztrneg(ji,jj,jn) / ztrpos(ji,jj,jn) ! ztrpos > 0 as ptrb > 0 |
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| 169 | ptrb(ji,jj,jk,jn) = ptrb(ji,jj,jk,jn) * zcoef |
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| 170 | IF( zcoef < 0. ) THEN ! if the compensation exceed the positive value |
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| 171 | gainmass(jn,1) = gainmass(jn,1) - ptrb(ji,jj,jk,jn) * cvol(ji,jj,jk) ! we are adding mass... |
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| 172 | ptrb(ji,jj,jk,jn) = 0. ! limit the compensation to keep positive value |
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| 173 | ENDIF |
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| 174 | ENDIF |
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| 175 | ! |
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| 176 | ENDIF |
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| 177 | END DO |
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| 178 | END DO |
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| 179 | END DO |
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| 180 | ! |
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[3294] | 181 | IF( l_trdtrc ) THEN |
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[10425] | 182 | ztrtrd(:,:,:) = ( ptrb(:,:,:,jn) - ztrtrd(:,:,:) ) * zs2rdt |
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| 183 | CALL trd_tra( kt, 'TRC', jn, jptra_radb, ztrtrd ) ! Asselin-like trend handling |
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[3294] | 184 | ENDIF |
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[9169] | 185 | ! |
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[10425] | 186 | END DO |
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| 187 | |
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| 188 | IF( kt == nitend ) THEN |
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| 189 | CALL mpp_sum( 'trcrad', gainmass(:,1) ) |
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| 190 | DO jn = jp_sms0, jp_sms1 |
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| 191 | IF( gainmass(jn,1) > 0. ) THEN |
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| 192 | ztotmass = glob_sum( 'trcrad', ptrb(:,:,:,jn) * cvol(:,:,:) ) |
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| 193 | IF(lwp) WRITE(numout, '(a, i2, a, D23.16, a, D23.16)') 'trcrad ptrb, traceur ', jn & |
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| 194 | & , ' total mass : ', ztotmass, ', mass gain : ', gainmass(jn,1) |
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| 195 | END IF |
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| 196 | END DO |
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| 197 | ENDIF |
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| 198 | |
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| 199 | DO jn = jp_sms0, jp_sms1 |
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| 200 | ztrneg(:,:,jn) = SUM( MIN( 0., ptrn(:,:,:,jn) ) * cvol(:,:,:), dim = 3 ) ! sum of the negative values |
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| 201 | ztrpos(:,:,jn) = SUM( MAX( 0., ptrn(:,:,:,jn) ) * cvol(:,:,:), dim = 3 ) ! sum of the positive values |
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| 202 | END DO |
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| 203 | CALL sum3x3( ztrneg ) |
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| 204 | CALL sum3x3( ztrpos ) |
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| 205 | |
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| 206 | DO jn = jp_sms0, jp_sms1 |
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[9169] | 207 | ! |
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[10425] | 208 | IF( l_trdtrc ) ztrtrd(:,:,:) = ptrn(:,:,:,jn) ! save input trb for trend computation |
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[9169] | 209 | ! |
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[10425] | 210 | DO jk = 1, jpkm1 |
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| 211 | DO jj = 1, jpj |
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| 212 | DO ji = 1, jpi |
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| 213 | IF( ztrneg(ji,jj,jn) /= 0. ) THEN ! if negative values over the 3x3 box |
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| 214 | ! |
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| 215 | ptrn(ji,jj,jk,jn) = ptrn(ji,jj,jk,jn) * tmask(ji,jj,jk) ! really needed? |
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| 216 | IF( ptrn(ji,jj,jk,jn) < 0. ) ptrn(ji,jj,jk,jn) = 0. ! supress negative values |
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| 217 | IF( ptrn(ji,jj,jk,jn) > 0. ) THEN ! use positive values to compensate mass gain |
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| 218 | zcoef = 1. + ztrneg(ji,jj,jn) / ztrpos(ji,jj,jn) ! ztrpos > 0 as ptrb > 0 |
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| 219 | ptrn(ji,jj,jk,jn) = ptrn(ji,jj,jk,jn) * zcoef |
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| 220 | IF( zcoef < 0. ) THEN ! if the compensation exceed the positive value |
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| 221 | gainmass(jn,2) = gainmass(jn,2) - ptrn(ji,jj,jk,jn) * cvol(ji,jj,jk) ! we are adding mass... |
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| 222 | ptrn(ji,jj,jk,jn) = 0. ! limit the compensation to keep positive value |
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| 223 | ENDIF |
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| 224 | ENDIF |
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| 225 | ! |
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| 226 | ENDIF |
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| 227 | END DO |
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[941] | 228 | END DO |
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[10425] | 229 | END DO |
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[941] | 230 | ! |
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[1175] | 231 | IF( l_trdtrc ) THEN |
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[10425] | 232 | ztrtrd(:,:,:) = ( ptrn(:,:,:,jn) - ztrtrd(:,:,:) ) * zs2rdt |
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| 233 | CALL trd_tra( kt, 'TRC', jn, jptra_radn, ztrtrd ) ! standard trend handling |
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[1175] | 234 | ENDIF |
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[9169] | 235 | ! |
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[941] | 236 | END DO |
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[10425] | 237 | |
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| 238 | IF( kt == nitend ) THEN |
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| 239 | CALL mpp_sum( 'trcrad', gainmass(:,2) ) |
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| 240 | DO jn = jp_sms0, jp_sms1 |
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| 241 | IF( gainmass(jn,2) > 0. ) THEN |
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| 242 | ztotmass = glob_sum( 'trcrad', ptrn(:,:,:,jn) * cvol(:,:,:) ) |
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| 243 | WRITE(numout, '(a, i2, a, D23.16, a, D23.16)') 'trcrad ptrn, traceur ', jn & |
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| 244 | & , ' total mass : ', ztotmass, ', mass gain : ', gainmass(jn,1) |
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| 245 | END IF |
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| 246 | END DO |
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| 247 | ENDIF |
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| 248 | |
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| 249 | DEALLOCATE( ztrneg, ztrpos ) |
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[941] | 250 | ! |
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[9169] | 251 | ELSE !== total CFC content is NOT strictly preserved ==! |
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[1003] | 252 | ! |
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| 253 | DO jn = jp_sms0, jp_sms1 |
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[9169] | 254 | ! |
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[10425] | 255 | IF( l_trdtrc ) ztrtrd(:,:,:) = ptrb(:,:,:,jn) ! save input trb for trend computation |
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| 256 | ! |
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| 257 | WHERE( ptrb(:,:,:,jn) < 0. ) ptrb(:,:,:,jn) = 0. |
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| 258 | ! |
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[9169] | 259 | IF( l_trdtrc ) THEN |
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[10425] | 260 | ztrtrd(:,:,:) = ( ptrb(:,:,:,jn) - ztrtrd(:,:,:) ) * zs2rdt |
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| 261 | CALL trd_tra( kt, 'TRC', jn, jptra_radb, ztrtrd ) ! Asselin-like trend handling |
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[9169] | 262 | ENDIF |
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| 263 | ! |
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[10425] | 264 | IF( l_trdtrc ) ztrtrd(:,:,:) = ptrn(:,:,:,jn) ! save input trn for trend computation |
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[9169] | 265 | ! |
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[10425] | 266 | WHERE( ptrn(:,:,:,jn) < 0. ) ptrn(:,:,:,jn) = 0. |
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| 267 | ! |
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[7753] | 268 | IF( l_trdtrc ) THEN |
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[10425] | 269 | ztrtrd(:,:,:) = ( ptrn(:,:,:,jn) - ztrtrd(:,:,:) ) * zs2rdt |
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| 270 | CALL trd_tra( kt, 'TRC', jn, jptra_radn, ztrtrd ) ! standard trend handling |
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[1257] | 271 | ENDIF |
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| 272 | ! |
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[9169] | 273 | END DO |
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| 274 | ! |
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[941] | 275 | ENDIF |
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[9169] | 276 | ! |
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[10425] | 277 | IF( l_trdtrc ) DEALLOCATE( ztrtrd ) |
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[9169] | 278 | ! |
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| 279 | END SUBROUTINE trc_rad_sms |
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[1175] | 280 | |
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[941] | 281 | #else |
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| 282 | !!---------------------------------------------------------------------- |
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| 283 | !! Dummy module : NO TOP model |
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| 284 | !!---------------------------------------------------------------------- |
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| 285 | CONTAINS |
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| 286 | SUBROUTINE trc_rad( kt ) ! Empty routine |
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| 287 | INTEGER, INTENT(in) :: kt |
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| 288 | WRITE(*,*) 'trc_rad: You should not have seen this print! error?', kt |
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| 289 | END SUBROUTINE trc_rad |
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| 290 | #endif |
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| 291 | |
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| 292 | !!====================================================================== |
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| 293 | END MODULE trcrad |
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