[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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| 15 | USE oce_trc ! ocean dynamics and tracers variables |
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[1175] | 16 | USE trp_trc ! ocean passive tracers variables |
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| 17 | USE trdmld_trc |
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| 18 | USE trdmld_trc_oce |
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[941] | 19 | USE lib_mpp |
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| 20 | USE prtctl_trc ! Print control for debbuging |
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| 21 | |
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| 22 | IMPLICIT NONE |
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| 23 | PRIVATE |
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| 24 | |
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[1257] | 25 | PUBLIC trc_rad ! routine called by trcstp.F90 |
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[941] | 26 | |
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| 27 | !! * Substitutions |
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| 28 | # include "top_substitute.h90" |
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| 29 | !!---------------------------------------------------------------------- |
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| 30 | !! NEMO/TOP 1.0 , LOCEAN-IPSL (2005) |
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[1146] | 31 | !! $Id$ |
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[941] | 32 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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| 33 | !!---------------------------------------------------------------------- |
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| 34 | |
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| 35 | CONTAINS |
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| 36 | |
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| 37 | SUBROUTINE trc_rad( kt ) |
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| 38 | !!---------------------------------------------------------------------- |
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| 39 | !! *** ROUTINE trc_rad *** |
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| 40 | !! |
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| 41 | !! ** Purpose : "crappy" routine to correct artificial negative |
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| 42 | !! concentrations due to isopycnal scheme |
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| 43 | !! |
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| 44 | !! ** Method : - PISCES or LOBSTER: Set negative concentrations to zero |
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| 45 | !! while computing the corresponding tracer content that |
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| 46 | !! is added to the tracers. Then, adjust the tracer |
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| 47 | !! concentration using a multiplicative factor so that |
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| 48 | !! the total tracer concentration is preserved. |
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| 49 | !! - CFC: simply set to zero the negative CFC concentration |
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| 50 | !! (the total CFC content is not strictly preserved) |
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| 51 | !!---------------------------------------------------------------------- |
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| 52 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 53 | CHARACTER (len=22) :: charout |
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| 54 | !!---------------------------------------------------------------------- |
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| 55 | |
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| 56 | IF( kt == nittrc000 ) THEN |
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| 57 | IF(lwp) WRITE(numout,*) |
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| 58 | IF(lwp) WRITE(numout,*) 'trc_rad : Correct artificial negative concentrations ' |
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| 59 | IF(lwp) WRITE(numout,*) '~~~~~~~ ' |
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| 60 | ENDIF |
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| 61 | |
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[1257] | 62 | IF( lk_cfc ) CALL trc_rad_sms( kt, trb, trn, jp_cfc0 , jp_cfc1 ) ! CFC model |
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| 63 | IF( lk_c14b ) CALL trc_rad_sms( kt, trb, trn, jp_c14b0, jp_c14b1 ) ! bomb C14 |
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| 64 | IF( lk_lobster ) CALL trc_rad_sms( kt, trb, trn, jp_lob0 , jp_lob1, cpreserv='Y' ) ! LOBSTER model |
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| 65 | IF( lk_pisces ) CALL trc_rad_sms( kt, trb, trn, jp_pcs0 , jp_pcs1, cpreserv='Y' ) ! PISCES model |
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| 66 | IF( lk_my_trc ) CALL trc_rad_sms( kt, trb, trn, jp_myt0 , jp_myt1 ) ! MY_TRC model |
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[941] | 67 | |
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[1003] | 68 | |
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| 69 | ! |
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| 70 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 71 | WRITE(charout, FMT="('rad')") |
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| 72 | CALL prt_ctl_trc_info( charout ) |
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| 73 | CALL prt_ctl_trc( tab4d=trn, mask=tmask, clinfo=ctrcnm ) |
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| 74 | ENDIF |
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| 75 | ! |
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| 76 | END SUBROUTINE trc_rad |
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| 77 | |
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[1175] | 78 | SUBROUTINE trc_rad_sms( kt, ptrb, ptrn, jp_sms0, jp_sms1, cpreserv ) |
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[1003] | 79 | !!----------------------------------------------------------------------------- |
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| 80 | !! *** ROUTINE trc_rad_sms *** |
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| 81 | !! |
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| 82 | !! ** Purpose : "crappy" routine to correct artificial negative |
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| 83 | !! concentrations due to isopycnal scheme |
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| 84 | !! |
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| 85 | !! ** Method : 2 cases : |
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| 86 | !! - Set negative concentrations to zero while computing |
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| 87 | !! the corresponding tracer content that is added to the |
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| 88 | !! tracers. Then, adjust the tracer concentration using |
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| 89 | !! a multiplicative factor so that the total tracer |
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| 90 | !! concentration is preserved. |
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| 91 | !! - simply set to zero the negative CFC concentration |
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| 92 | !! (the total content of concentration is not strictly preserved) |
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| 93 | !!-------------------------------------------------------------------------------- |
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| 94 | !! Arguments |
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[1175] | 95 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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[1003] | 96 | INTEGER , INTENT( in ) :: & |
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| 97 | jp_sms0, & !: First index of the passive tracer model |
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| 98 | jp_sms1 !: Last index of the passive tracer model |
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| 99 | |
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| 100 | REAL(wp), DIMENSION (jpi,jpj,jpk,jptra), INTENT( inout ) :: & |
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| 101 | ptrb, ptrn !: before and now traceur concentration |
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| 102 | |
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| 103 | CHARACTER( len = 1) , INTENT(in), OPTIONAL :: & |
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| 104 | cpreserv !: flag to preserve content or not |
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| 105 | |
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| 106 | ! Local declarations |
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| 107 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
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| 108 | REAL(wp) :: zvolk, ztrcorb, ztrmasb ! temporary scalars |
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| 109 | REAL(wp) :: zcoef, ztrcorn, ztrmasn ! " " |
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[1175] | 110 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: ztrtrdb ! workspace arrays |
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| 111 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: ztrtrdn ! workspace arrays |
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[1257] | 112 | REAL(wp) :: zs2rdt |
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[1175] | 113 | LOGICAL :: lldebug = .FALSE. |
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[1003] | 114 | |
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| 115 | !!---------------------------------------------------------------------- |
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| 116 | |
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[1175] | 117 | IF( l_trdtrc ) THEN |
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| 118 | ! |
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| 119 | ALLOCATE( ztrtrdb(jpi,jpj,jpk) ) |
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| 120 | ALLOCATE( ztrtrdn(jpi,jpj,jpk) ) |
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| 121 | ! |
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| 122 | ENDIF |
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[1003] | 123 | |
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| 124 | IF( PRESENT( cpreserv ) ) THEN ! total tracer concentration is preserved |
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| 125 | |
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| 126 | DO jn = jp_sms0, jp_sms1 |
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[1175] | 127 | ! ! =========== |
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[1193] | 128 | ztrcorb = 0.e0 ; ztrmasb = 0.e0 |
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| 129 | ztrcorn = 0.e0 ; ztrmasn = 0.e0 |
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[1003] | 130 | |
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[1193] | 131 | IF( l_trdtrc ) THEN |
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| 132 | ztrtrdb(:,:,:) = ptrb(:,:,:,jn) ! save input trb for trend computation |
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| 133 | ztrtrdn(:,:,:) = ptrn(:,:,:,jn) ! save input trn for trend computation |
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| 134 | ENDIF |
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[1175] | 135 | |
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| 136 | |
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[941] | 137 | DO jk = 1, jpkm1 |
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| 138 | DO jj = 1, jpj |
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| 139 | DO ji = 1, jpi |
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[1257] | 140 | zvolk = cvol(ji,jj,jk) |
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[941] | 141 | # if defined key_off_degrad |
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[1257] | 142 | zvolk = zvolk * facvol(ji,jj,jk) |
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[941] | 143 | # endif |
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[1257] | 144 | ztrcorb = ztrcorb + MIN( 0., ptrb(ji,jj,jk,jn) ) * zvolk |
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| 145 | ztrcorn = ztrcorn + MIN( 0., ptrn(ji,jj,jk,jn) ) * zvolk |
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[941] | 146 | |
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[1257] | 147 | ptrb(ji,jj,jk,jn) = MAX( 0., ptrb(ji,jj,jk,jn) ) |
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| 148 | ptrn(ji,jj,jk,jn) = MAX( 0., ptrn(ji,jj,jk,jn) ) |
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[941] | 149 | |
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[1003] | 150 | ztrmasb = ztrmasb + ptrb(ji,jj,jk,jn) * zvolk |
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| 151 | ztrmasn = ztrmasn + ptrn(ji,jj,jk,jn) * zvolk |
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[941] | 152 | END DO |
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| 153 | END DO |
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| 154 | END DO |
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[1003] | 155 | |
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[941] | 156 | IF( lk_mpp ) THEN |
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| 157 | CALL mpp_sum( ztrcorb ) ! sum over the global domain |
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| 158 | CALL mpp_sum( ztrcorn ) ! sum over the global domain |
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| 159 | CALL mpp_sum( ztrmasb ) ! sum over the global domain |
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| 160 | CALL mpp_sum( ztrmasn ) ! sum over the global domain |
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| 161 | ENDIF |
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| 162 | |
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| 163 | IF( ztrcorb /= 0 ) THEN |
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| 164 | zcoef = 1. + ztrcorb / ztrmasb |
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| 165 | DO jk = 1, jpkm1 |
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[1003] | 166 | ptrb(:,:,jk,jn) = ptrb(:,:,jk,jn) * zcoef * tmask(:,:,jk) |
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[941] | 167 | END DO |
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| 168 | ENDIF |
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| 169 | |
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| 170 | IF( ztrcorn /= 0 ) THEN |
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| 171 | zcoef = 1. + ztrcorn / ztrmasn |
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| 172 | DO jk = 1, jpkm1 |
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[1003] | 173 | ptrn(:,:,jk,jn) = ptrn(:,:,jk,jn) * zcoef * tmask(:,:,jk) |
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[941] | 174 | END DO |
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| 175 | ENDIF |
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| 176 | ! |
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[1175] | 177 | IF( l_trdtrc ) THEN |
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| 178 | ! |
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[1257] | 179 | zs2rdt = 1. / ( 2. * rdt ) |
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| 180 | ztrtrdb(:,:,:) = ( ptrb(:,:,:,jn) - ztrtrdb(:,:,:) ) * zs2rdt |
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| 181 | ztrtrdn(:,:,:) = ( ptrn(:,:,:,jn) - ztrtrdn(:,:,:) ) * zs2rdt |
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[1175] | 182 | IF (luttrd(jn)) CALL trd_mod_trc( ztrtrdb, jn, jptrc_trd_radb, kt ) ! Asselin-like trend handling |
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| 183 | IF (luttrd(jn)) CALL trd_mod_trc( ztrtrdn, jn, jptrc_trd_radn, kt ) ! standard trend handling |
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| 184 | ! |
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| 185 | ENDIF |
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| 186 | |
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[941] | 187 | END DO |
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| 188 | ! |
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[1003] | 189 | ! |
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| 190 | ELSE ! total CFC content is not strictly preserved |
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| 191 | |
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| 192 | DO jn = jp_sms0, jp_sms1 |
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[1257] | 193 | |
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| 194 | IF( l_trdtrc ) THEN |
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| 195 | ztrtrdb(:,:,:) = ptrb(:,:,:,jn) ! save input trb for trend computation |
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| 196 | ztrtrdn(:,:,:) = ptrn(:,:,:,jn) ! save input trn for trend computation |
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| 197 | ENDIF |
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| 198 | |
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[1003] | 199 | DO jk = 1, jpkm1 |
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| 200 | DO jj = 1, jpj |
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| 201 | DO ji = 1, jpi |
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| 202 | ptrn(ji,jj,jk,jn) = MAX( 0. , ptrn(ji,jj,jk,jn) ) |
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| 203 | ptrb(ji,jj,jk,jn) = MAX( 0. , ptrb(ji,jj,jk,jn) ) |
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| 204 | END DO |
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| 205 | END DO |
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| 206 | END DO |
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[1257] | 207 | |
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| 208 | IF( l_trdtrc ) THEN |
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| 209 | ! |
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| 210 | zs2rdt = 1. / ( 2. * rdt * FLOAT(ndttrc) ) |
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| 211 | ztrtrdb(:,:,:) = ( ptrb(:,:,:,jn) - ztrtrdb(:,:,:) ) * zs2rdt |
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| 212 | ztrtrdn(:,:,:) = ( ptrn(:,:,:,jn) - ztrtrdn(:,:,:) ) * zs2rdt |
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| 213 | IF (luttrd(jn)) CALL trd_mod_trc( ztrtrdb, jn, jptrc_trd_radb, kt ) ! Asselin-like trend handling |
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| 214 | IF (luttrd(jn)) CALL trd_mod_trc( ztrtrdn, jn, jptrc_trd_radn, kt ) ! standard trend handling |
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| 215 | ! |
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| 216 | ENDIF |
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| 217 | ! |
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| 218 | ENDDO |
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[1003] | 219 | |
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[941] | 220 | ENDIF |
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| 221 | |
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[1175] | 222 | IF( l_trdtrc ) DEALLOCATE( ztrtrdb, ztrtrdn ) |
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| 223 | |
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[1003] | 224 | END SUBROUTINE trc_rad_sms |
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[941] | 225 | #else |
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| 226 | !!---------------------------------------------------------------------- |
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| 227 | !! Dummy module : NO TOP model |
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| 228 | !!---------------------------------------------------------------------- |
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| 229 | CONTAINS |
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| 230 | SUBROUTINE trc_rad( kt ) ! Empty routine |
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| 231 | INTEGER, INTENT(in) :: kt |
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| 232 | WRITE(*,*) 'trc_rad: You should not have seen this print! error?', kt |
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| 233 | END SUBROUTINE trc_rad |
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| 234 | #endif |
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| 235 | |
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| 236 | !!====================================================================== |
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| 237 | END MODULE trcrad |
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