[3] | 1 | MODULE trabbc |
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| 2 | !!============================================================================== |
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| 3 | !! *** MODULE trabbc *** |
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[2528] | 4 | !! Ocean active tracers: bottom boundary condition (geothermal heat flux) |
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[3] | 5 | !!============================================================================== |
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[2528] | 6 | !! History : OPA ! 1999-10 (G. Madec) original code |
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| 7 | !! NEMO 1.0 ! 2002-08 (G. Madec) free form + modules |
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| 8 | !! - ! 2002-11 (A. Bozec) tra_bbc_init: original code |
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| 9 | !! 3.3 ! 2010-10 (G. Madec) dynamical allocation + suppression of key_trabbc |
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| 10 | !! - ! 2010-11 (G. Madec) use mbkt array (deepest ocean t-level) |
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[503] | 11 | !!---------------------------------------------------------------------- |
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[2528] | 12 | |
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[3] | 13 | !!---------------------------------------------------------------------- |
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[14072] | 14 | !! tra_bbc : update the tracer trend at ocean bottom |
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[6140] | 15 | !! tra_bbc_init : initialization of geothermal heat flux trend |
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[3] | 16 | !!---------------------------------------------------------------------- |
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[6140] | 17 | USE oce ! ocean variables |
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| 18 | USE dom_oce ! domain: ocean |
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| 19 | USE phycst ! physical constants |
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| 20 | USE trd_oce ! trends: ocean variables |
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[14072] | 21 | USE trdtra ! trends manager: tracers |
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[6140] | 22 | ! |
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| 23 | USE in_out_manager ! I/O manager |
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[14072] | 24 | USE iom ! xIOS |
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[6140] | 25 | USE fldread ! read input fields |
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| 26 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 27 | USE lib_mpp ! distributed memory computing library |
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| 28 | USE prtctl ! Print control |
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| 29 | USE timing ! Timing |
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[3] | 30 | |
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| 31 | IMPLICIT NONE |
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| 32 | PRIVATE |
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| 33 | |
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| 34 | PUBLIC tra_bbc ! routine called by step.F90 |
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[2528] | 35 | PUBLIC tra_bbc_init ! routine called by opa.F90 |
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[3] | 36 | |
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[4147] | 37 | ! !!* Namelist nambbc: bottom boundary condition * |
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| 38 | LOGICAL, PUBLIC :: ln_trabbc !: Geothermal heat flux flag |
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| 39 | INTEGER :: nn_geoflx ! Geothermal flux (=1:constant flux, =2:read in file ) |
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| 40 | REAL(wp) :: rn_geoflx_cst ! Constant value of geothermal heat flux |
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[3] | 41 | |
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[6140] | 42 | REAL(wp), PUBLIC , ALLOCATABLE, DIMENSION(:,:) :: qgh_trd0 ! geothermal heating trend |
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| 43 | |
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| 44 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_qgh ! structure of input qgh (file informations, fields read) |
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[14072] | 45 | |
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[12377] | 46 | !! * Substitutions |
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| 47 | # include "do_loop_substitute.h90" |
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[13237] | 48 | # include "domzgr_substitute.h90" |
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[14219] | 49 | # include "single_precision_substitute.h90" |
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[3] | 50 | !!---------------------------------------------------------------------- |
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[9598] | 51 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[5217] | 52 | !! $Id$ |
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[10068] | 53 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3] | 54 | !!---------------------------------------------------------------------- |
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| 55 | CONTAINS |
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| 56 | |
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[12377] | 57 | SUBROUTINE tra_bbc( kt, Kmm, pts, Krhs ) |
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[3] | 58 | !!---------------------------------------------------------------------- |
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| 59 | !! *** ROUTINE tra_bbc *** |
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| 60 | !! |
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[14072] | 61 | !! ** Purpose : Compute the bottom boundary contition on temperature |
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| 62 | !! associated with geothermal heating and add it to the |
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[1601] | 63 | !! general trend of temperature equations. |
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[3] | 64 | !! |
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[14072] | 65 | !! ** Method : The geothermal heat flux set to its constant value of |
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[1601] | 66 | !! 86.4 mW/m2 (Stein and Stein 1992, Huang 1999). |
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[3] | 67 | !! The temperature trend associated to this heat flux through the |
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| 68 | !! ocean bottom can be computed once and is added to the temperature |
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| 69 | !! trend juste above the bottom at each time step: |
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[12489] | 70 | !! ta = ta + Qsf / (rho0 rcp e3T) for k= mbkt |
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[3] | 71 | !! Where Qsf is the geothermal heat flux. |
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| 72 | !! |
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[6140] | 73 | !! ** Action : - update the temperature trends with geothermal heating trend |
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| 74 | !! - send the trend for further diagnostics (ln_trdtra=T) |
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[3] | 75 | !! |
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[503] | 76 | !! References : Stein, C. A., and S. Stein, 1992, Nature, 359, 123-129. |
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[1601] | 77 | !! Emile-Geay and Madec, 2009, Ocean Science. |
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[503] | 78 | !!---------------------------------------------------------------------- |
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[12377] | 79 | INTEGER, INTENT(in ) :: kt ! ocean time-step index |
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| 80 | INTEGER, INTENT(in ) :: Kmm, Krhs ! time level indices |
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[14219] | 81 | REAL(dp), DIMENSION(jpi,jpj,jpk,jpts,jpt), INTENT(inout) :: pts ! active tracers and RHS of tracer equation |
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[6140] | 82 | ! |
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[13982] | 83 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[9019] | 84 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrdt ! 3D workspace |
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[3] | 85 | !!---------------------------------------------------------------------- |
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[2528] | 86 | ! |
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[9019] | 87 | IF( ln_timing ) CALL timing_start('tra_bbc') |
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[3294] | 88 | ! |
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[13982] | 89 | IF( l_trdtra ) THEN ! Save the input temperature trend |
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[9019] | 90 | ALLOCATE( ztrdt(jpi,jpj,jpk) ) |
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[12377] | 91 | ztrdt(:,:,:) = pts(:,:,:,jp_tem,Krhs) |
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[503] | 92 | ENDIF |
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[6140] | 93 | ! ! Add the geothermal trend on temperature |
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[13295] | 94 | DO_2D( 0, 0, 0, 0 ) |
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[13237] | 95 | pts(ji,jj,mbkt(ji,jj),jp_tem,Krhs) = pts(ji,jj,mbkt(ji,jj),jp_tem,Krhs) & |
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| 96 | & + qgh_trd0(ji,jj) / e3t(ji,jj,mbkt(ji,jj),Kmm) |
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[12377] | 97 | END_2D |
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[2528] | 98 | ! |
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[6140] | 99 | IF( l_trdtra ) THEN ! Send the trend for diagnostics |
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[12377] | 100 | ztrdt(:,:,:) = pts(:,:,:,jp_tem,Krhs) - ztrdt(:,:,:) |
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| 101 | CALL trd_tra( kt, Kmm, Krhs, 'TRA', jp_tem, jptra_bbc, ztrdt ) |
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[9019] | 102 | DEALLOCATE( ztrdt ) |
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[3] | 103 | ENDIF |
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[503] | 104 | ! |
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[13982] | 105 | IF( ntile == 0 .OR. ntile == nijtile ) THEN ! Do only for the full domain |
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| 106 | CALL iom_put ( "hfgeou" , rho0_rcp * qgh_trd0(:,:) ) |
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| 107 | ENDIF |
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[14219] | 108 | IF(sn_cfctl%l_prtctl) CALL prt_ctl( tab3d_1=CASTWP(pts(:,:,:,jp_tem,Krhs)), clinfo1=' bbc - Ta: ', mask1=tmask, clinfo3='tra-ta' ) |
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[12276] | 109 | ! |
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[9019] | 110 | IF( ln_timing ) CALL timing_stop('tra_bbc') |
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[3294] | 111 | ! |
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[3] | 112 | END SUBROUTINE tra_bbc |
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| 113 | |
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| 114 | |
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| 115 | SUBROUTINE tra_bbc_init |
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| 116 | !!---------------------------------------------------------------------- |
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| 117 | !! *** ROUTINE tra_bbc_init *** |
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| 118 | !! |
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[1601] | 119 | !! ** Purpose : Compute once for all the trend associated with geothermal |
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| 120 | !! heating that will be applied at each time step at the |
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| 121 | !! last ocean level |
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[3] | 122 | !! |
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| 123 | !! ** Method : Read the nambbc namelist and check the parameters. |
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| 124 | !! |
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| 125 | !! ** Input : - Namlist nambbc |
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| 126 | !! - NetCDF file : geothermal_heating.nc ( if necessary ) |
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| 127 | !! |
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[592] | 128 | !! ** Action : - read/fix the geothermal heat qgh_trd0 |
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[3] | 129 | !!---------------------------------------------------------------------- |
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| 130 | INTEGER :: ji, jj ! dummy loop indices |
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[473] | 131 | INTEGER :: inum ! temporary logical unit |
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[4147] | 132 | INTEGER :: ios ! Local integer output status for namelist read |
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[5397] | 133 | INTEGER :: ierror ! local integer |
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[4990] | 134 | ! |
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[5397] | 135 | TYPE(FLD_N) :: sn_qgh ! informations about the geotherm. field to be read |
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| 136 | CHARACTER(len=256) :: cn_dir ! Root directory for location of ssr files |
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[9019] | 137 | !! |
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[14072] | 138 | NAMELIST/nambbc/ln_trabbc, nn_geoflx, rn_geoflx_cst, sn_qgh, cn_dir |
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[3] | 139 | !!---------------------------------------------------------------------- |
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[6140] | 140 | ! |
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[4147] | 141 | READ ( numnam_ref, nambbc, IOSTAT = ios, ERR = 901) |
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[11536] | 142 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambbc in reference namelist' ) |
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[6140] | 143 | ! |
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[4147] | 144 | READ ( numnam_cfg, nambbc, IOSTAT = ios, ERR = 902 ) |
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[11536] | 145 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'nambbc in configuration namelist' ) |
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[4624] | 146 | IF(lwm) WRITE ( numond, nambbc ) |
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[6140] | 147 | ! |
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[2528] | 148 | IF(lwp) THEN ! Control print |
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[1601] | 149 | WRITE(numout,*) |
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[2528] | 150 | WRITE(numout,*) 'tra_bbc : Bottom Boundary Condition (bbc), apply a Geothermal heating' |
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[1601] | 151 | WRITE(numout,*) '~~~~~~~ ' |
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| 152 | WRITE(numout,*) ' Namelist nambbc : set bbc parameters' |
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[2528] | 153 | WRITE(numout,*) ' Apply a geothermal heating at ocean bottom ln_trabbc = ', ln_trabbc |
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| 154 | WRITE(numout,*) ' type of geothermal flux nn_geoflx = ', nn_geoflx |
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| 155 | WRITE(numout,*) ' Constant geothermal flux value rn_geoflx_cst = ', rn_geoflx_cst |
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[1601] | 156 | WRITE(numout,*) |
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| 157 | ENDIF |
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[6140] | 158 | ! |
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[2528] | 159 | IF( ln_trabbc ) THEN !== geothermal heating ==! |
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[503] | 160 | ! |
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[2528] | 161 | ALLOCATE( qgh_trd0(jpi,jpj) ) ! allocation |
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[503] | 162 | ! |
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[2528] | 163 | SELECT CASE ( nn_geoflx ) ! geothermal heat flux / (rauO * Cp) |
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[503] | 164 | ! |
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[2528] | 165 | CASE ( 1 ) !* constant flux |
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[9190] | 166 | IF(lwp) WRITE(numout,*) ' ==>>> constant heat flux = ', rn_geoflx_cst |
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[12489] | 167 | qgh_trd0(:,:) = r1_rho0_rcp * rn_geoflx_cst |
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[2528] | 168 | ! |
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| 169 | CASE ( 2 ) !* variable geothermal heat flux : read the geothermal fluxes in mW/m2 |
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[9190] | 170 | IF(lwp) WRITE(numout,*) ' ==>>> variable geothermal heat flux' |
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[2528] | 171 | ! |
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[5397] | 172 | ALLOCATE( sf_qgh(1), STAT=ierror ) |
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| 173 | IF( ierror > 0 ) THEN |
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| 174 | CALL ctl_stop( 'tra_bbc_init: unable to allocate sf_qgh structure' ) ; |
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| 175 | RETURN |
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| 176 | ENDIF |
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| 177 | ALLOCATE( sf_qgh(1)%fnow(jpi,jpj,1) ) |
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[9019] | 178 | IF( sn_qgh%ln_tint ) ALLOCATE( sf_qgh(1)%fdta(jpi,jpj,1,2) ) |
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[5397] | 179 | ! fill sf_chl with sn_chl and control print |
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| 180 | CALL fld_fill( sf_qgh, (/ sn_qgh /), cn_dir, 'tra_bbc_init', & |
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[7646] | 181 | & 'bottom temperature boundary condition', 'nambbc', no_print ) |
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[5397] | 182 | |
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| 183 | CALL fld_read( nit000, 1, sf_qgh ) ! Read qgh data |
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[12489] | 184 | qgh_trd0(:,:) = r1_rho0_rcp * sf_qgh(1)%fnow(:,:,1) * 1.e-3 ! conversion in W/m2 |
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[5397] | 185 | ! |
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[2528] | 186 | CASE DEFAULT |
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| 187 | WRITE(ctmp1,*) ' bad flag value for nn_geoflx = ', nn_geoflx |
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| 188 | CALL ctl_stop( ctmp1 ) |
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| 189 | END SELECT |
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[503] | 190 | ! |
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[2528] | 191 | ELSE |
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[9190] | 192 | IF(lwp) WRITE(numout,*) ' ==>>> no geothermal heat flux' |
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[2528] | 193 | ENDIF |
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[1601] | 194 | ! |
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[3] | 195 | END SUBROUTINE tra_bbc_init |
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| 196 | |
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| 197 | !!====================================================================== |
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| 198 | END MODULE trabbc |
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