[6951] | 1 | MODULE istate |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE istate *** |
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| 4 | !! Ocean state : initial state setting |
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| 5 | !!===================================================================== |
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| 6 | !! History : OPA ! 1989-12 (P. Andrich) Original code |
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| 7 | !! 5.0 ! 1991-11 (G. Madec) rewritting |
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| 8 | !! 6.0 ! 1996-01 (G. Madec) terrain following coordinates |
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| 9 | !! 8.0 ! 2001-09 (M. Levy, M. Ben Jelloul) istate_eel |
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| 10 | !! 8.0 ! 2001-09 (M. Levy, M. Ben Jelloul) istate_uvg |
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| 11 | !! NEMO 1.0 ! 2003-08 (G. Madec, C. Talandier) F90: Free form, modules + EEL R5 |
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| 12 | !! - ! 2004-05 (A. Koch-Larrouy) istate_gyre |
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| 13 | !! 2.0 ! 2006-07 (S. Masson) distributed restart using iom |
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| 14 | !! 3.3 ! 2010-10 (C. Ethe) merge TRC-TRA |
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| 15 | !! 3.4 ! 2011-04 (G. Madec) Merge of dtatem and dtasal & suppression of tb,tn/sb,sn |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | |
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| 18 | !!---------------------------------------------------------------------- |
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| 19 | !! istate_init : initial state setting |
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| 20 | !! istate_tem : analytical profile for initial Temperature |
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| 21 | !! istate_sal : analytical profile for initial Salinity |
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| 22 | !! istate_eel : initial state setting of EEL R5 configuration |
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| 23 | !! istate_gyre : initial state setting of GYRE configuration |
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| 24 | !! istate_uvg : initial velocity in geostropic balance |
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| 25 | !!---------------------------------------------------------------------- |
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| 26 | USE oce ! ocean dynamics and active tracers |
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| 27 | USE dom_oce ! ocean space and time domain |
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| 28 | USE c1d ! 1D vertical configuration |
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| 29 | USE daymod ! calendar |
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| 30 | USE eosbn2 ! eq. of state, Brunt Vaisala frequency (eos routine) |
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| 31 | USE ldftra ! lateral physics: ocean active tracers |
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| 32 | USE zdf_oce ! ocean vertical physics |
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| 33 | USE phycst ! physical constants |
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| 34 | USE dtatsd ! data temperature and salinity (dta_tsd routine) |
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| 35 | USE dtauvd ! data: U & V current (dta_uvd routine) |
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| 36 | USE domvvl ! varying vertical mesh |
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| 37 | USE iscplrst ! ice sheet coupling |
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| 38 | ! |
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| 39 | USE in_out_manager ! I/O manager |
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| 40 | USE iom ! I/O library |
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| 41 | USE lib_mpp ! MPP library |
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| 42 | USE restart ! restart |
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| 43 | USE wrk_nemo ! Memory allocation |
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| 44 | USE timing ! Timing |
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| 45 | |
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| 46 | IMPLICIT NONE |
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| 47 | PRIVATE |
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| 48 | |
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| 49 | PUBLIC istate_init ! routine called by step.F90 |
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| 50 | |
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| 51 | !! * Substitutions |
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| 52 | !!---------------------------------------------------------------------- |
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| 53 | !! *** vectopt_loop_substitute *** |
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| 54 | !!---------------------------------------------------------------------- |
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| 55 | !! ** purpose : substitute the inner loop start/end indices with CPP macro |
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| 56 | !! allow unrolling of do-loop (useful with vector processors) |
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| 57 | !!---------------------------------------------------------------------- |
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| 58 | !!---------------------------------------------------------------------- |
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| 59 | !! NEMO/OPA 3.7 , NEMO Consortium (2014) |
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[9496] | 60 | !! $Id$ |
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[6951] | 61 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 62 | !!---------------------------------------------------------------------- |
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| 63 | !!---------------------------------------------------------------------- |
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| 64 | !! NEMO/OPA 3.7 , NEMO Consortium (2014) |
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[9496] | 65 | !! $Id$ |
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[6951] | 66 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 67 | !!---------------------------------------------------------------------- |
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| 68 | CONTAINS |
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| 69 | |
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| 70 | SUBROUTINE istate_init |
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| 71 | !!---------------------------------------------------------------------- |
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| 72 | !! *** ROUTINE istate_init *** |
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| 73 | !! |
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| 74 | !! ** Purpose : Initialization of the dynamics and tracer fields. |
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| 75 | !!---------------------------------------------------------------------- |
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| 76 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 77 | REAL(wp), POINTER, DIMENSION(:,:,:,:) :: zuvd ! U & V data workspace |
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| 78 | !!---------------------------------------------------------------------- |
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| 79 | ! |
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| 80 | IF( nn_timing == 1 ) CALL timing_start('istate_init') |
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| 81 | ! |
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| 82 | |
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| 83 | IF(lwp) WRITE(numout,*) |
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| 84 | IF(lwp) WRITE(numout,*) 'istate_ini : Initialization of the dynamics and tracers' |
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| 85 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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| 86 | |
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| 87 | CALL dta_tsd_init ! Initialisation of T & S input data |
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| 88 | IF( lk_c1d ) CALL dta_uvd_init ! Initialization of U & V input data |
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| 89 | |
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| 90 | rhd (:,:,: ) = 0._wp ; rhop (:,:,: ) = 0._wp ! set one for all to 0 at level jpk |
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| 91 | rn2b (:,:,: ) = 0._wp ; rn2 (:,:,: ) = 0._wp ! set one for all to 0 at levels 1 and jpk |
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| 92 | tsa (:,:,:,:) = 0._wp ! set one for all to 0 at level jpk |
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| 93 | rab_b(:,:,:,:) = 0._wp ; rab_n(:,:,:,:) = 0._wp ! set one for all to 0 at level jpk |
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| 94 | |
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| 95 | IF( ln_rstart ) THEN ! Restart from a file |
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| 96 | ! ! ------------------- |
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| 97 | CALL rst_read ! Read the restart file |
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| 98 | IF (ln_iscpl) CALL iscpl_stp ! extraloate restart to wet and dry |
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| 99 | CALL day_init ! model calendar (using both namelist and restart infos) |
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| 100 | ELSE |
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| 101 | ! ! Start from rest |
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| 102 | ! ! --------------- |
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| 103 | numror = 0 ! define numror = 0 -> no restart file to read |
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| 104 | neuler = 0 ! Set time-step indicator at nit000 (euler forward) |
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| 105 | CALL day_init ! model calendar (using both namelist and restart infos) |
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| 106 | ! ! Initialization of ocean to zero |
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| 107 | ! before fields ! now fields |
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| 108 | sshb (:,:) = 0._wp ; sshn (:,:) = 0._wp |
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| 109 | ub (:,:,:) = 0._wp ; un (:,:,:) = 0._wp |
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| 110 | vb (:,:,:) = 0._wp ; vn (:,:,:) = 0._wp |
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| 111 | hdivn(:,:,:) = 0._wp |
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| 112 | ! |
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| 113 | IF( cp_cfg == 'eel' ) THEN |
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| 114 | CALL istate_eel ! EEL configuration : start from pre-defined U,V T-S fields |
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| 115 | ELSEIF( cp_cfg == 'gyre' ) THEN |
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| 116 | CALL istate_gyre ! GYRE configuration : start from pre-defined T-S fields |
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| 117 | ELSE ! Initial T-S, U-V fields read in files |
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| 118 | IF ( ln_tsd_init ) THEN ! read 3D T and S data at nit000 |
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| 119 | CALL dta_tsd( nit000, tsb ) |
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| 120 | tsn(:,:,:,:) = tsb(:,:,:,:) |
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| 121 | ! |
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| 122 | ELSE ! Initial T-S fields defined analytically |
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| 123 | CALL istate_t_s |
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| 124 | ENDIF |
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| 125 | IF ( ln_uvd_init .AND. lk_c1d ) THEN ! read 3D U and V data at nit000 |
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| 126 | CALL wrk_alloc( jpi,jpj,jpk,2, zuvd ) |
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| 127 | CALL dta_uvd( nit000, zuvd ) |
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| 128 | ub(:,:,:) = zuvd(:,:,:,1) ; un(:,:,:) = ub(:,:,:) |
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| 129 | vb(:,:,:) = zuvd(:,:,:,2) ; vn(:,:,:) = vb(:,:,:) |
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| 130 | CALL wrk_dealloc( jpi,jpj,jpk,2, zuvd ) |
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| 131 | ENDIF |
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| 132 | ENDIF |
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| 133 | ! |
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| 134 | !!gm This is to be changed !!!! |
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| 135 | ! - ML - sshn could be modified by istate_eel, so that initialization of e3t_b is done here |
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| 136 | IF( .NOT.ln_linssh ) THEN |
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| 137 | DO jk = 1, jpk |
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| 138 | e3t_b(:,:,jk) = e3t_n(:,:,jk) |
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| 139 | END DO |
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| 140 | ENDIF |
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| 141 | !!gm |
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| 142 | ! |
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| 143 | ENDIF |
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| 144 | ! |
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| 145 | ! Initialize "now" and "before" barotropic velocities: |
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| 146 | ! Do it whatever the free surface method, these arrays being eventually used |
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| 147 | ! |
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| 148 | un_b(:,:) = 0._wp ; vn_b(:,:) = 0._wp |
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| 149 | ub_b(:,:) = 0._wp ; vb_b(:,:) = 0._wp |
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| 150 | ! |
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| 151 | !!gm the use of umsak & vmask is not necessary belox as un, vn, ub, vb are always masked |
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| 152 | DO jk = 1, jpkm1 |
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| 153 | DO jj = 1, jpj |
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| 154 | DO ji = 1, jpi |
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| 155 | un_b(ji,jj) = un_b(ji,jj) + e3u_n(ji,jj,jk) * un(ji,jj,jk) * umask(ji,jj,jk) |
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| 156 | vn_b(ji,jj) = vn_b(ji,jj) + e3v_n(ji,jj,jk) * vn(ji,jj,jk) * vmask(ji,jj,jk) |
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| 157 | ! |
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| 158 | ub_b(ji,jj) = ub_b(ji,jj) + e3u_b(ji,jj,jk) * ub(ji,jj,jk) * umask(ji,jj,jk) |
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| 159 | vb_b(ji,jj) = vb_b(ji,jj) + e3v_b(ji,jj,jk) * vb(ji,jj,jk) * vmask(ji,jj,jk) |
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| 160 | END DO |
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| 161 | END DO |
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| 162 | END DO |
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| 163 | ! |
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| 164 | un_b(:,:) = un_b(:,:) * r1_hu_n(:,:) |
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| 165 | vn_b(:,:) = vn_b(:,:) * r1_hv_n(:,:) |
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| 166 | ! |
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| 167 | ub_b(:,:) = ub_b(:,:) * r1_hu_b(:,:) |
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| 168 | vb_b(:,:) = vb_b(:,:) * r1_hv_b(:,:) |
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| 169 | ! |
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| 170 | IF( nn_timing == 1 ) CALL timing_stop('istate_init') |
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| 171 | ! |
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| 172 | END SUBROUTINE istate_init |
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| 173 | |
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| 174 | |
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| 175 | SUBROUTINE istate_t_s |
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| 176 | !!--------------------------------------------------------------------- |
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| 177 | !! *** ROUTINE istate_t_s *** |
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| 178 | !! |
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| 179 | !! ** Purpose : Intialization of the temperature field with an |
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| 180 | !! analytical profile or a file (i.e. in EEL configuration) |
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| 181 | !! |
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| 182 | !! ** Method : - temperature: use Philander analytic profile |
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| 183 | !! - salinity : use to a constant value 35.5 |
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| 184 | !! |
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| 185 | !! References : Philander ??? |
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| 186 | !!---------------------------------------------------------------------- |
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| 187 | INTEGER :: ji, jj, jk |
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| 188 | REAL(wp) :: zsal = 35.50_wp |
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| 189 | !!---------------------------------------------------------------------- |
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| 190 | ! |
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| 191 | IF(lwp) WRITE(numout,*) |
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| 192 | IF(lwp) WRITE(numout,*) 'istate_t_s : Philander s initial temperature profile' |
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| 193 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~ and constant salinity (',zsal,' psu)' |
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| 194 | ! |
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| 195 | DO jk = 1, jpk |
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| 196 | tsn(:,:,jk,jp_tem) = ( ( ( 7.5 - 0. * ABS( gphit(:,:) )/30. ) * ( 1.-TANH((gdept_n(:,:,jk)-80.)/30.) ) & |
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| 197 | & + 10. * ( 5000. - gdept_n(:,:,jk) ) /5000.) ) * tmask(:,:,jk) |
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| 198 | tsb(:,:,jk,jp_tem) = tsn(:,:,jk,jp_tem) |
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| 199 | END DO |
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| 200 | tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:) |
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| 201 | tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) |
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| 202 | ! |
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| 203 | END SUBROUTINE istate_t_s |
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| 204 | |
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| 205 | |
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| 206 | SUBROUTINE istate_eel |
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| 207 | !!---------------------------------------------------------------------- |
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| 208 | !! *** ROUTINE istate_eel *** |
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| 209 | !! |
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| 210 | !! ** Purpose : Initialization of the dynamics and tracers for EEL R5 |
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| 211 | !! configuration (channel with or without a topographic bump) |
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| 212 | !! |
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| 213 | !! ** Method : - set temprature field |
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| 214 | !! - set salinity field |
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| 215 | !! - set velocity field including horizontal divergence |
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| 216 | !! and relative vorticity fields |
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| 217 | !!---------------------------------------------------------------------- |
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| 218 | USE divhor ! hor. divergence (div_hor routine) |
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| 219 | USE iom |
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| 220 | ! |
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| 221 | INTEGER :: inum ! temporary logical unit |
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| 222 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 223 | INTEGER :: ijloc |
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| 224 | REAL(wp) :: zh1, zh2, zslope, zcst, zfcor ! temporary scalars |
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| 225 | REAL(wp) :: zt1 = 15._wp ! surface temperature value (EEL R5) |
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| 226 | REAL(wp) :: zt2 = 5._wp ! bottom temperature value (EEL R5) |
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| 227 | REAL(wp) :: zsal = 35.0_wp ! constant salinity (EEL R2, R5 and R6) |
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| 228 | REAL(wp) :: zueel = 0.1_wp ! constant uniform zonal velocity (EEL R5) |
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| 229 | REAL(wp), DIMENSION(jpiglo,jpjglo) :: zssh ! initial ssh over the global domain |
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| 230 | !!---------------------------------------------------------------------- |
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| 231 | ! |
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| 232 | SELECT CASE ( jp_cfg ) |
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| 233 | ! ! ==================== |
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| 234 | CASE ( 5 ) ! EEL R5 configuration |
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| 235 | ! ! ==================== |
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| 236 | ! |
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| 237 | ! set temperature field with a linear profile |
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| 238 | ! ------------------------------------------- |
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| 239 | IF(lwp) WRITE(numout,*) |
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| 240 | IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: linear temperature profile' |
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| 241 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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| 242 | ! |
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| 243 | zh1 = gdept_1d( 1 ) |
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| 244 | zh2 = gdept_1d(jpkm1) |
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| 245 | ! |
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| 246 | zslope = ( zt1 - zt2 ) / ( zh1 - zh2 ) |
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| 247 | zcst = ( zt1 * ( zh1 - zh2) - ( zt1 - zt2 ) * zh1 ) / ( zh1 - zh2 ) |
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| 248 | ! |
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| 249 | DO jk = 1, jpk |
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| 250 | tsn(:,:,jk,jp_tem) = ( zt2 + zt1 * exp( - gdept_n(:,:,jk) / 1000 ) ) * tmask(:,:,jk) |
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| 251 | tsb(:,:,jk,jp_tem) = tsn(:,:,jk,jp_tem) |
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| 252 | END DO |
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| 253 | ! |
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| 254 | ! set salinity field to a constant value |
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| 255 | ! -------------------------------------- |
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| 256 | IF(lwp) WRITE(numout,*) |
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| 257 | IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: constant salinity field, S = ', zsal |
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| 258 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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| 259 | ! |
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| 260 | tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:) |
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| 261 | tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) |
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| 262 | ! |
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| 263 | ! set the dynamics: U,V, hdiv (and ssh if necessary) |
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| 264 | ! ---------------- |
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| 265 | ! Start EEL5 configuration with barotropic geostrophic velocities |
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| 266 | ! according the sshb and sshn SSH imposed. |
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| 267 | ! we assume a uniform grid (hence the use of e1t(1,1) for delta_y) |
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| 268 | ! we use the Coriolis frequency at mid-channel. |
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| 269 | ub(:,:,:) = zueel * umask(:,:,:) |
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| 270 | un(:,:,:) = ub(:,:,:) |
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| 271 | ijloc = mj0(INT(jpjglo-1)/2) |
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| 272 | zfcor = ff(1,ijloc) |
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| 273 | ! |
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| 274 | DO jj = 1, jpjglo |
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| 275 | zssh(:,jj) = - (FLOAT(jj)- FLOAT(jpjglo-1)/2.)*zueel*e1t(1,1)*zfcor/grav |
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| 276 | END DO |
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| 277 | ! |
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| 278 | IF(lwp) THEN |
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| 279 | WRITE(numout,*) ' Uniform zonal velocity for EEL R5:',zueel |
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| 280 | WRITE(numout,*) ' Geostrophic SSH profile as a function of y:' |
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| 281 | WRITE(numout,'(12(1x,f6.2))') zssh(1,:) |
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| 282 | ENDIF |
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| 283 | ! |
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| 284 | DO jj = 1, nlcj |
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| 285 | DO ji = 1, nlci |
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| 286 | sshb(ji,jj) = zssh( mig(ji) , mjg(jj) ) * tmask(ji,jj,1) |
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| 287 | END DO |
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| 288 | END DO |
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| 289 | sshb(nlci+1:jpi, : ) = 0.e0 ! set to zero extra mpp columns |
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| 290 | sshb( : ,nlcj+1:jpj) = 0.e0 ! set to zero extra mpp rows |
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| 291 | ! |
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| 292 | sshn(:,:) = sshb(:,:) ! set now ssh to the before value |
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| 293 | ! |
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| 294 | IF( nn_rstssh /= 0 ) THEN |
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| 295 | nn_rstssh = 0 ! hand-made initilization of ssh |
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| 296 | CALL ctl_warn( 'istate_eel: force nn_rstssh = 0' ) |
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| 297 | ENDIF |
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| 298 | ! |
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| 299 | !!gm Check here call to div_hor should not be necessary |
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| 300 | !!gm div_hor call runoffs not sure they are defined at that level |
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| 301 | CALL div_hor( nit000 ) ! horizontal divergence and relative vorticity (curl) |
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| 302 | ! N.B. the vertical velocity will be computed from the horizontal divergence field |
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| 303 | ! in istate by a call to wzv routine |
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| 304 | |
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| 305 | |
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| 306 | ! ! ========================== |
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| 307 | CASE ( 2 , 6 ) ! EEL R2 or R6 configuration |
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| 308 | ! ! ========================== |
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| 309 | ! |
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| 310 | ! set temperature field with a NetCDF file |
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| 311 | ! ---------------------------------------- |
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| 312 | IF(lwp) WRITE(numout,*) |
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| 313 | IF(lwp) WRITE(numout,*) 'istate_eel : EEL R2 or R6: read initial temperature in a NetCDF file' |
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| 314 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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| 315 | ! |
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| 316 | CALL iom_open ( 'eel.initemp', inum ) |
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| 317 | CALL iom_get ( inum, jpdom_data, 'initemp', tsb(:,:,:,jp_tem) ) ! read before temprature (tb) |
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| 318 | CALL iom_close( inum ) |
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| 319 | ! |
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| 320 | tsn(:,:,:,jp_tem) = tsb(:,:,:,jp_tem) ! set nox temperature to tb |
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| 321 | ! |
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| 322 | ! set salinity field to a constant value |
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| 323 | ! -------------------------------------- |
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| 324 | IF(lwp) WRITE(numout,*) |
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| 325 | IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: constant salinity field, S = ', zsal |
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| 326 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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| 327 | ! |
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| 328 | tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:) |
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| 329 | tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) |
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| 330 | ! |
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| 331 | ! ! =========================== |
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| 332 | CASE DEFAULT ! NONE existing configuration |
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| 333 | ! ! =========================== |
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| 334 | WRITE(ctmp1,*) 'EEL with a ', jp_cfg,' km resolution is not coded' |
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| 335 | CALL ctl_stop( ctmp1 ) |
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| 336 | ! |
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| 337 | END SELECT |
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| 338 | ! |
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| 339 | END SUBROUTINE istate_eel |
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| 340 | |
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| 341 | |
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| 342 | SUBROUTINE istate_gyre |
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| 343 | !!---------------------------------------------------------------------- |
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| 344 | !! *** ROUTINE istate_gyre *** |
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| 345 | !! |
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| 346 | !! ** Purpose : Initialization of the dynamics and tracers for GYRE |
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| 347 | !! configuration (double gyre with rotated domain) |
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| 348 | !! |
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| 349 | !! ** Method : - set temprature field |
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| 350 | !! - set salinity field |
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| 351 | !!---------------------------------------------------------------------- |
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| 352 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 353 | INTEGER :: inum ! temporary logical unit |
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| 354 | INTEGER, PARAMETER :: ntsinit = 0 ! (0/1) (analytical/input data files) T&S initialization |
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| 355 | !!---------------------------------------------------------------------- |
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| 356 | ! |
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| 357 | SELECT CASE ( ntsinit) |
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| 358 | ! |
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| 359 | CASE ( 0 ) ! analytical T/S profil deduced from LEVITUS |
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| 360 | IF(lwp) WRITE(numout,*) |
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| 361 | IF(lwp) WRITE(numout,*) 'istate_gyre : initial analytical T and S profil deduced from LEVITUS ' |
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| 362 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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| 363 | ! |
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| 364 | DO jk = 1, jpk |
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| 365 | DO jj = 1, jpj |
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| 366 | DO ji = 1, jpi |
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| 367 | tsn(ji,jj,jk,jp_tem) = ( 16. - 12. * TANH( (gdept_n(ji,jj,jk) - 400) / 700 ) ) & |
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| 368 | & * (-TANH( (500-gdept_n(ji,jj,jk)) / 150 ) + 1) / 2 & |
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| 369 | & + ( 15. * ( 1. - TANH( (gdept_n(ji,jj,jk)-50.) / 1500.) ) & |
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| 370 | & - 1.4 * TANH((gdept_n(ji,jj,jk)-100.) / 100.) & |
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| 371 | & + 7. * (1500. - gdept_n(ji,jj,jk)) / 1500. ) & |
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| 372 | & * (-TANH( (gdept_n(ji,jj,jk) - 500) / 150) + 1) / 2 |
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| 373 | tsn(ji,jj,jk,jp_tem) = tsn(ji,jj,jk,jp_tem) * tmask(ji,jj,jk) |
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| 374 | tsb(ji,jj,jk,jp_tem) = tsn(ji,jj,jk,jp_tem) |
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| 375 | |
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| 376 | tsn(ji,jj,jk,jp_sal) = ( 36.25 - 1.13 * TANH( (gdept_n(ji,jj,jk) - 305) / 460 ) ) & |
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| 377 | & * (-TANH((500 - gdept_n(ji,jj,jk)) / 150) + 1) / 2 & |
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| 378 | & + ( 35.55 + 1.25 * (5000. - gdept_n(ji,jj,jk)) / 5000. & |
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| 379 | & - 1.62 * TANH( (gdept_n(ji,jj,jk) - 60. ) / 650. ) & |
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| 380 | & + 0.2 * TANH( (gdept_n(ji,jj,jk) - 35. ) / 100. ) & |
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| 381 | & + 0.2 * TANH( (gdept_n(ji,jj,jk) - 1000.) / 5000.) ) & |
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| 382 | & * (-TANH((gdept_n(ji,jj,jk) - 500) / 150) + 1) / 2 |
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| 383 | tsn(ji,jj,jk,jp_sal) = tsn(ji,jj,jk,jp_sal) * tmask(ji,jj,jk) |
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| 384 | tsb(ji,jj,jk,jp_sal) = tsn(ji,jj,jk,jp_sal) |
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| 385 | END DO |
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| 386 | END DO |
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| 387 | END DO |
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| 388 | ! |
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| 389 | CASE ( 1 ) ! T/S data fields read in dta_tem.nc/data_sal.nc files |
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| 390 | IF(lwp) WRITE(numout,*) |
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| 391 | IF(lwp) WRITE(numout,*) 'istate_gyre : initial T and S read from dta_tem.nc/data_sal.nc files' |
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| 392 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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| 393 | IF(lwp) WRITE(numout,*) ' NetCDF FORMAT' |
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| 394 | |
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| 395 | ! Read temperature field |
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| 396 | ! ---------------------- |
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| 397 | CALL iom_open ( 'data_tem', inum ) |
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| 398 | CALL iom_get ( inum, jpdom_data, 'votemper', tsn(:,:,:,jp_tem) ) |
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| 399 | CALL iom_close( inum ) |
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| 400 | |
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| 401 | tsn(:,:,:,jp_tem) = tsn(:,:,:,jp_tem) * tmask(:,:,:) |
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| 402 | tsb(:,:,:,jp_tem) = tsn(:,:,:,jp_tem) |
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| 403 | |
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| 404 | ! Read salinity field |
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| 405 | ! ------------------- |
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| 406 | CALL iom_open ( 'data_sal', inum ) |
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| 407 | CALL iom_get ( inum, jpdom_data, 'vosaline', tsn(:,:,:,jp_sal) ) |
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| 408 | CALL iom_close( inum ) |
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| 409 | |
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| 410 | tsn(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) * tmask(:,:,:) |
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| 411 | tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) |
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| 412 | ! |
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| 413 | END SELECT |
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| 414 | ! |
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| 415 | IF(lwp) THEN |
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| 416 | WRITE(numout,*) |
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| 417 | WRITE(numout,*) ' Initial temperature and salinity profiles:' |
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| 418 | WRITE(numout, "(9x,' level gdept_1d temperature salinity ')" ) |
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| 419 | WRITE(numout, "(10x, i4, 3f10.2)" ) ( jk, gdept_1d(jk), tsn(2,2,jk,jp_tem), tsn(2,2,jk,jp_sal), jk = 1, jpk ) |
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| 420 | ENDIF |
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| 421 | ! |
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| 422 | END SUBROUTINE istate_gyre |
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| 423 | |
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| 424 | |
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| 425 | SUBROUTINE istate_uvg |
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| 426 | !!---------------------------------------------------------------------- |
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| 427 | !! *** ROUTINE istate_uvg *** |
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| 428 | !! |
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| 429 | !! ** Purpose : Compute the geostrophic velocities from (tn,sn) fields |
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| 430 | !! |
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| 431 | !! ** Method : Using the hydrostatic hypothesis the now hydrostatic |
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| 432 | !! pressure is computed by integrating the in-situ density from the |
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| 433 | !! surface to the bottom. |
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| 434 | !! p=integral [ rau*g dz ] |
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| 435 | !!---------------------------------------------------------------------- |
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| 436 | USE divhor ! hor. divergence (div_hor routine) |
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| 437 | USE lbclnk ! ocean lateral boundary condition (or mpp link) |
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| 438 | ! |
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| 439 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 440 | REAL(wp) :: zmsv, zphv, zmsu, zphu, zalfg ! temporary scalars |
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| 441 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zprn |
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| 442 | !!---------------------------------------------------------------------- |
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| 443 | ! |
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| 444 | CALL wrk_alloc( jpi,jpj,jpk, zprn) |
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| 445 | ! |
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| 446 | IF(lwp) WRITE(numout,*) |
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| 447 | IF(lwp) WRITE(numout,*) 'istate_uvg : Start from Geostrophy' |
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| 448 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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| 449 | |
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| 450 | ! Compute the now hydrostatic pressure |
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| 451 | ! ------------------------------------ |
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| 452 | |
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| 453 | zalfg = 0.5 * grav * rau0 |
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| 454 | |
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| 455 | zprn(:,:,1) = zalfg * e3w_n(:,:,1) * ( 1 + rhd(:,:,1) ) ! Surface value |
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| 456 | |
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| 457 | DO jk = 2, jpkm1 ! Vertical integration from the surface |
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| 458 | zprn(:,:,jk) = zprn(:,:,jk-1) & |
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| 459 | & + zalfg * e3w_n(:,:,jk) * ( 2. + rhd(:,:,jk) + rhd(:,:,jk-1) ) |
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| 460 | END DO |
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| 461 | |
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| 462 | ! Compute geostrophic balance |
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| 463 | ! --------------------------- |
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| 464 | DO jk = 1, jpkm1 |
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| 465 | DO jj = 2, jpjm1 |
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| 466 | DO ji = 2, jpim1 ! vertor opt. |
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| 467 | zmsv = 1. / MAX( umask(ji-1,jj+1,jk) + umask(ji ,jj+1,jk) & |
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| 468 | + umask(ji-1,jj ,jk) + umask(ji ,jj ,jk) , 1. ) |
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| 469 | zphv = ( zprn(ji ,jj+1,jk) - zprn(ji-1,jj+1,jk) ) * umask(ji-1,jj+1,jk) / e1u(ji-1,jj+1) & |
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| 470 | + ( zprn(ji+1,jj+1,jk) - zprn(ji ,jj+1,jk) ) * umask(ji ,jj+1,jk) / e1u(ji ,jj+1) & |
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| 471 | + ( zprn(ji ,jj ,jk) - zprn(ji-1,jj ,jk) ) * umask(ji-1,jj ,jk) / e1u(ji-1,jj ) & |
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| 472 | + ( zprn(ji+1,jj ,jk) - zprn(ji ,jj ,jk) ) * umask(ji ,jj ,jk) / e1u(ji ,jj ) |
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| 473 | zphv = 1. / rau0 * zphv * zmsv * vmask(ji,jj,jk) |
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| 474 | |
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| 475 | zmsu = 1. / MAX( vmask(ji+1,jj ,jk) + vmask(ji ,jj ,jk) & |
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| 476 | + vmask(ji+1,jj-1,jk) + vmask(ji ,jj-1,jk) , 1. ) |
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| 477 | zphu = ( zprn(ji+1,jj+1,jk) - zprn(ji+1,jj ,jk) ) * vmask(ji+1,jj ,jk) / e2v(ji+1,jj ) & |
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| 478 | + ( zprn(ji ,jj+1,jk) - zprn(ji ,jj ,jk) ) * vmask(ji ,jj ,jk) / e2v(ji ,jj ) & |
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| 479 | + ( zprn(ji+1,jj ,jk) - zprn(ji+1,jj-1,jk) ) * vmask(ji+1,jj-1,jk) / e2v(ji+1,jj-1) & |
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| 480 | + ( zprn(ji ,jj ,jk) - zprn(ji ,jj-1,jk) ) * vmask(ji ,jj-1,jk) / e2v(ji ,jj-1) |
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| 481 | zphu = 1. / rau0 * zphu * zmsu * umask(ji,jj,jk) |
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| 482 | |
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| 483 | ! Compute the geostrophic velocities |
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| 484 | un(ji,jj,jk) = -2. * zphu / ( ff(ji,jj) + ff(ji ,jj-1) ) |
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| 485 | vn(ji,jj,jk) = 2. * zphv / ( ff(ji,jj) + ff(ji-1,jj ) ) |
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| 486 | END DO |
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| 487 | END DO |
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| 488 | END DO |
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| 489 | |
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| 490 | IF(lwp) WRITE(numout,*) ' we force to zero bottom velocity' |
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| 491 | |
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| 492 | ! Susbtract the bottom velocity (level jpk-1 for flat bottom case) |
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| 493 | ! to have a zero bottom velocity |
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| 494 | |
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| 495 | DO jk = 1, jpkm1 |
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| 496 | un(:,:,jk) = ( un(:,:,jk) - un(:,:,jpkm1) ) * umask(:,:,jk) |
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| 497 | vn(:,:,jk) = ( vn(:,:,jk) - vn(:,:,jpkm1) ) * vmask(:,:,jk) |
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| 498 | END DO |
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| 499 | |
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| 500 | CALL lbc_lnk( un, 'U', -1. ) |
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| 501 | CALL lbc_lnk( vn, 'V', -1. ) |
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| 502 | |
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| 503 | ub(:,:,:) = un(:,:,:) |
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| 504 | vb(:,:,:) = vn(:,:,:) |
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| 505 | |
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| 506 | ! |
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| 507 | !!gm Check here call to div_hor should not be necessary |
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| 508 | !!gm div_hor call runoffs not sure they are defined at that level |
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| 509 | CALL div_hor( nit000 ) ! now horizontal divergence |
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| 510 | ! |
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| 511 | CALL wrk_dealloc( jpi,jpj,jpk, zprn) |
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| 512 | ! |
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| 513 | END SUBROUTINE istate_uvg |
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| 514 | |
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| 515 | !!===================================================================== |
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| 516 | END MODULE istate |
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