[941] | 1 | MODULE trcbbc |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE trcbbc *** |
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| 4 | !! Ocean passive tracers: bottom boundary condition |
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| 5 | !!====================================================================== |
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[1175] | 6 | !! History : 8.1 ! 99-10 (G. Madec) original code |
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| 7 | !! 8.5 ! 02-08 (G. Madec) free form + modules |
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| 8 | !! ! 02-11 (A. Bozec) trc_bbc_init |
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| 9 | !! 9.0 ! 04-03 (C. Ethe) adpated for passive tracers |
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| 10 | !! ! 07-02 (C. Deltel) Diagnose ML trends for passive tracers |
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[941] | 11 | !!---------------------------------------------------------------------- |
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[1175] | 12 | #if defined key_top && defined key_trcbbc |
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[941] | 13 | !!---------------------------------------------------------------------- |
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[1175] | 14 | !! 'key_trcbbc' geothermal heat flux |
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| 15 | !!---------------------------------------------------------------------- |
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[941] | 16 | !! trc_bbc : update the tracer trend at ocean bottom |
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| 17 | !! trc_bbc_init : initialization of geothermal heat flux trend |
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| 18 | !!---------------------------------------------------------------------- |
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| 19 | USE oce_trc ! ocean dynamics and active tracers variables |
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[1175] | 20 | USE trc ! ocean passive tracers variables |
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[941] | 21 | USE prtctl_trc ! Print control for debbuging |
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[1175] | 22 | USE trdmld_trc |
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| 23 | USE trdmld_trc_oce |
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| 24 | |
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[941] | 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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| 28 | PUBLIC trc_bbc ! routine called by trcstp.F90 |
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| 29 | |
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[1175] | 30 | !! >>>>>>>>>>>>>>>>>>>>>>>>> MOVE TO NAMELIST >>>>>>>>>>>>>>>>>>>>>>>>>> |
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[941] | 31 | LOGICAL, PUBLIC, PARAMETER :: lk_trcbbc = .TRUE. !: bbc flag |
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[1175] | 32 | |
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| 33 | INTEGER :: ngeo_trc_flux = 1 !!! ** bbc namelist (nambbc) ** |
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| 34 | ! ! Geothermal flux (0:no flux, 1:constant flux, |
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| 35 | ! ! 2:read in file ) |
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| 36 | REAL(wp) :: ngeo_trc_flux_const = 86.4e-3 !!! ** bbc namlist ** |
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| 37 | ! ! Constant value of geothermal heat flux |
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[941] | 38 | |
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[1175] | 39 | INTEGER, DIMENSION(jpi,jpj) :: nbotlevt ! ocean bottom level index at T-pt |
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| 40 | REAL(wp), DIMENSION(jpi,jpj) :: qgh_trd ! geothermal heating trend |
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| 41 | !! <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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[941] | 42 | |
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| 43 | !! * Substitutions |
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| 44 | # include "top_substitute.h90" |
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| 45 | !!---------------------------------------------------------------------- |
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| 46 | !! TOP 1.0 , LOCEAN-IPSL (2005) |
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[1175] | 47 | !! $Header: /home/opalod/NEMOCVSROOT/NEMO/TOP_SRC/TRP/trcbbc.F90,v 1.11 2006/09/12 11:10:13 opalod Exp $ |
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[2208] | 48 | !! Software governed by the CeCILL licence (NEMOGCM/License_CeCILL.txt) |
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[941] | 49 | !!---------------------------------------------------------------------- |
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| 50 | |
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| 51 | CONTAINS |
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| 52 | |
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| 53 | SUBROUTINE trc_bbc( kt ) |
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| 54 | !!---------------------------------------------------------------------- |
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| 55 | !! *** ROUTINE trc_bbc *** |
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| 56 | !! |
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| 57 | !! ** Purpose : Compute the bottom boundary contition on passive tracer |
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| 58 | !! associated with geothermal heating and add it to the general |
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| 59 | !! trend of tracers equations. |
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| 60 | !! |
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| 61 | !! ** Method : The geothermal heat flux set to its constant value of |
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| 62 | !! 86.4 mW/m2 (Stein and Stein 1992, Huang 1999). |
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| 63 | !! The temperature trend associated to this heat flux through the |
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| 64 | !! ocean bottom can be computed once and is added to the temperature |
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| 65 | !! trend juste above the bottom at each time step: |
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| 66 | !! tra = tra + Qsf / (rau0 rcp e3T) for k= mbathy -1 |
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| 67 | !! Where Qsf is the geothermal heat flux. |
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| 68 | !! |
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| 69 | !! ** Action : - update the temperature trends tra with the trend of |
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| 70 | !! the ocean bottom boundary condition |
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| 71 | !! |
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| 72 | !! References : |
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| 73 | !! Stein, C. A., and S. Stein, 1992, Nature, 359, 123-129. |
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| 74 | !!---------------------------------------------------------------------- |
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[1175] | 75 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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[941] | 76 | |
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[1197] | 77 | #if defined key_vectopt_loop |
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[1175] | 78 | INTEGER :: ji, jn ! dummy loop indices |
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[941] | 79 | #else |
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[1175] | 80 | INTEGER :: ji, jj, jn ! dummy loop indices |
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[941] | 81 | #endif |
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[1175] | 82 | REAL(wp) :: ztra ! temporary scalar |
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[941] | 83 | CHARACTER (len=22) :: charout |
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[1175] | 84 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: ztrtrd ! trends |
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[941] | 85 | !!---------------------------------------------------------------------- |
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| 86 | |
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| 87 | ! 0. Initialization |
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[1175] | 88 | ! ----------------- |
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| 89 | |
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[941] | 90 | IF( kt == nittrc000 ) CALL trc_bbc_init |
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| 91 | |
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[1175] | 92 | IF( l_trdtrc ) ALLOCATE( ztrtrd(jpi,jpj,jpk) ) |
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| 93 | |
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| 94 | |
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[941] | 95 | ! 1. Add the geothermal heat flux trend on temperature |
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[1175] | 96 | ! ---------------------------------------------------- |
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[941] | 97 | |
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| 98 | SELECT CASE ( ngeo_trc_flux ) |
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| 99 | |
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| 100 | CASE ( 1:2 ) ! geothermal heat flux |
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| 101 | |
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[1175] | 102 | ! ! =========== |
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| 103 | DO jn = 1, jptra ! tracer loop |
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| 104 | ! ! =========== |
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| 105 | IF( l_trdtrc ) ztrtrd(:,:,:) = tra(:,:,:,jn) ! save trends |
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| 106 | |
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| 107 | |
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[1197] | 108 | #if defined key_vectopt_loop |
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[941] | 109 | DO ji = jpi+2, jpij-jpi-1 ! vector opt. (forced unrolling) |
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| 110 | tra(ji,1,nbotlevt(ji,1),jn) = tra(ji,1,nbotlevt(ji,1),jn) + qgh_trd(ji,1) |
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| 111 | END DO |
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| 112 | #else |
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| 113 | DO jj = 2, jpjm1 |
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| 114 | DO ji = 2, jpim1 |
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| 115 | tra(ji,jj,nbotlevt(ji,jj),jn) = tra(ji,jj,nbotlevt(ji,jj),jn) + qgh_trd(ji,jj) |
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| 116 | END DO |
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| 117 | END DO |
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| 118 | #endif |
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[1175] | 119 | |
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| 120 | IF( l_trdtrc ) THEN |
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| 121 | ztrtrd(:,:,:) = tra(:,:,:,jn) - ztrtrd(:,:,:) |
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| 122 | IF (luttrd(jn)) CALL trd_mod_trc(ztrtrd, jn, jptrc_trd_bbc, kt) |
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| 123 | END IF |
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[941] | 124 | |
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[1175] | 125 | ! ! =========== |
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| 126 | END DO ! tracer loop |
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| 127 | ! ! =========== |
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| 128 | |
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| 129 | IF( l_trdtrc ) DEALLOCATE( ztrtrd ) |
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| 130 | |
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| 131 | IF( ln_ctl ) THEN ! print mean trends (used for debugging) |
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[941] | 132 | WRITE(charout, FMT="('bbc')") |
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| 133 | CALL prt_ctl_trc_info(charout) |
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| 134 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm,clinfo2='trd') |
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| 135 | ENDIF |
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| 136 | END SELECT |
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| 137 | |
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| 138 | END SUBROUTINE trc_bbc |
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| 139 | |
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| 140 | |
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| 141 | SUBROUTINE trc_bbc_init |
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| 142 | !!---------------------------------------------------------------------- |
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| 143 | !! *** ROUTINE trc_bbc_init *** |
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| 144 | !! |
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| 145 | !! ** Purpose : Compute once for all the trend associated with geo- |
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| 146 | !! thermal heating that will be applied at each time step at the |
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| 147 | !! bottom ocean level |
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| 148 | !! |
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[1175] | 149 | !! ** Method : Read the namtopbbc namelist and check the parameters. |
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[941] | 150 | !! called at the first time step (nittrc000) |
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| 151 | !! |
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[1175] | 152 | !! ** Input : - Namlist namtopbbc |
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[941] | 153 | !! - NetCDF file : passivetrc_geothermal_heating.nc |
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| 154 | !! ( if necessary ) |
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| 155 | !! |
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| 156 | !! ** Action : - compute the heat geothermal trend qgh_trd |
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| 157 | !! - compute the bottom ocean level nbotlevt |
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| 158 | !!---------------------------------------------------------------------- |
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| 159 | USE iom |
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| 160 | |
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| 161 | CHARACTER (len=32) :: clname |
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| 162 | INTEGER :: ji, jj ! dummy loop indices |
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[1258] | 163 | INTEGER :: inum ! temporary logical unit |
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[941] | 164 | |
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[1175] | 165 | NAMELIST/namtopbbc/ngeo_trc_flux, ngeo_trc_flux_const |
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[941] | 166 | !!---------------------------------------------------------------------- |
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| 167 | |
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| 168 | ! Read Namelist nambbc : bottom momentum boundary condition |
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[1175] | 169 | REWIND ( numnat ) |
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| 170 | READ ( numnat, namtopbbc ) |
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[941] | 171 | |
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| 172 | ! Control print |
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| 173 | IF(lwp) WRITE(numout,*) |
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| 174 | IF(lwp) WRITE(numout,*) 'trc_bbc : Passive tracers Bottom Boundary Condition (bbc)' |
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| 175 | IF(lwp) WRITE(numout,*) '~~~~~~~ Geothermal heatflux' |
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| 176 | IF(lwp) WRITE(numout,*) ' Namelist namtrcbbc : set bbc parameters' |
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| 177 | IF(lwp) WRITE(numout,*) |
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| 178 | IF(lwp) WRITE(numout,*) ' Geothermal flux ngeo_trc_flux = ', ngeo_trc_flux |
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| 179 | IF(lwp) WRITE(numout,*) ' Constant geothermal flux ngeo_trc_flux_const = ', ngeo_trc_flux_const |
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| 180 | IF(lwp) WRITE(numout,*) |
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| 181 | |
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| 182 | ! level of the ocean bottom at T-point |
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| 183 | |
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| 184 | DO jj = 1, jpj |
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| 185 | DO ji = 1, jpi |
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| 186 | nbotlevt(ji,jj) = MAX( mbathy(ji,jj)-1, 1 ) |
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| 187 | END DO |
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| 188 | END DO |
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| 189 | |
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| 190 | ! initialization of geothermal heat flux |
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| 191 | |
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| 192 | SELECT CASE ( ngeo_trc_flux ) |
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| 193 | |
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| 194 | CASE ( 0 ) ! no geothermal heat flux |
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| 195 | IF(lwp) WRITE(numout,*) |
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| 196 | IF(lwp) WRITE(numout,*) ' *** no geothermal heat flux' |
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| 197 | |
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| 198 | CASE ( 1 ) ! constant flux |
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| 199 | IF(lwp) WRITE(numout,*) ' *** constant heat flux = ', ngeo_trc_flux_const |
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| 200 | qgh_trd(:,:) = ngeo_trc_flux_const |
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| 201 | |
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| 202 | CASE ( 2 ) ! variable geothermal heat flux |
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| 203 | ! read the geothermal fluxes in mW/m2 |
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| 204 | CALL iom_open ( 'geothermal_heating_trc.nc', inum ) |
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| 205 | CALL iom_get ( inum, jpdom_data, 'heatflow', qgh_trd ) |
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| 206 | CALL iom_close (inum) |
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| 207 | |
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| 208 | qgh_trd(:,:) = qgh_trd(:,:) * 1.e-3 ! conversion in W/m2 |
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| 209 | |
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| 210 | CASE DEFAULT |
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| 211 | WRITE(ctmp1,*) ' bad flag value for ngeo_flux = ', ngeo_flux |
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| 212 | CALL ctl_stop( ctmp1 ) |
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| 213 | |
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| 214 | END SELECT |
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| 215 | |
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| 216 | ! geothermal heat flux trend |
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| 217 | |
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| 218 | SELECT CASE ( ngeo_trc_flux ) |
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| 219 | |
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| 220 | CASE ( 1:2 ) ! geothermal heat flux |
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| 221 | |
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[1197] | 222 | #if defined key_vectopt_loop |
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[941] | 223 | DO ji = 1, jpij ! vector opt. (forced unrolling) |
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| 224 | qgh_trd(ji,1) = ro0cpr * qgh_trd(ji,1) / fse3t(ji,1,nbotlevt(ji,1) ) |
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| 225 | END DO |
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| 226 | #else |
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| 227 | DO jj = 1, jpj |
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| 228 | DO ji = 1, jpi |
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| 229 | qgh_trd(ji,jj) = ro0cpr * qgh_trd(ji,jj) / fse3t(ji,jj,nbotlevt(ji,jj)) |
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| 230 | END DO |
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| 231 | END DO |
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| 232 | #endif |
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| 233 | |
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| 234 | END SELECT |
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| 235 | |
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| 236 | END SUBROUTINE trc_bbc_init |
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| 237 | |
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| 238 | #else |
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| 239 | !!---------------------------------------------------------------------- |
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| 240 | !! Default option Empty module |
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| 241 | !!---------------------------------------------------------------------- |
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| 242 | LOGICAL, PUBLIC, PARAMETER :: lk_trcbbc = .FALSE. !: bbc flag |
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| 243 | CONTAINS |
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| 244 | SUBROUTINE trc_bbc( kt ) ! Empty routine |
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| 245 | INTEGER, INTENT(in) :: kt |
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| 246 | WRITE(*,*) 'trc_bbc: You should not have seen this print! error?', kt |
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| 247 | END SUBROUTINE trc_bbc |
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| 248 | #endif |
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| 249 | |
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| 250 | !!====================================================================== |
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| 251 | END MODULE trcbbc |
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