[2048] | 1 | MODULE zdfgls |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE zdfgls *** |
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| 4 | !! Ocean physics: vertical mixing coefficient computed from the gls |
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| 5 | !! turbulent closure parameterization |
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| 6 | !!====================================================================== |
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[2397] | 7 | !! History : 3.0 ! 2009-09 (G. Reffray) Original code |
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| 8 | !! 3.3 ! 2010-10 (C. Bricaud) Add in the reference |
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[2048] | 9 | !!---------------------------------------------------------------------- |
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[5836] | 10 | #if defined key_zdfgls |
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[2048] | 11 | !!---------------------------------------------------------------------- |
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| 12 | !! 'key_zdfgls' Generic Length Scale vertical physics |
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| 13 | !!---------------------------------------------------------------------- |
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[3625] | 14 | !! zdf_gls : update momentum and tracer Kz from a gls scheme |
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| 15 | !! zdf_gls_init : initialization, namelist read, and parameters control |
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| 16 | !! gls_rst : read/write gls restart in ocean restart file |
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[2048] | 17 | !!---------------------------------------------------------------------- |
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| 18 | USE oce ! ocean dynamics and active tracers |
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| 19 | USE dom_oce ! ocean space and time domain |
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| 20 | USE domvvl ! ocean space and time domain : variable volume layer |
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| 21 | USE zdf_oce ! ocean vertical physics |
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[5109] | 22 | USE zdfbfr ! bottom friction (only for rn_bfrz0) |
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[2048] | 23 | USE sbc_oce ! surface boundary condition: ocean |
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| 24 | USE phycst ! physical constants |
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| 25 | USE zdfmxl ! mixed layer |
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[7646] | 26 | USE sbcwave , ONLY: hsw ! significant wave height |
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| 27 | ! |
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[2048] | 28 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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[2715] | 29 | USE lib_mpp ! MPP manager |
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[3294] | 30 | USE wrk_nemo ! work arrays |
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[2048] | 31 | USE prtctl ! Print control |
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| 32 | USE in_out_manager ! I/O manager |
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| 33 | USE iom ! I/O manager library |
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[3294] | 34 | USE timing ! Timing |
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[3625] | 35 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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[2048] | 36 | |
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| 37 | IMPLICIT NONE |
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| 38 | PRIVATE |
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| 39 | |
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[2329] | 40 | PUBLIC zdf_gls ! routine called in step module |
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[2397] | 41 | PUBLIC zdf_gls_init ! routine called in opa module |
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[2329] | 42 | PUBLIC gls_rst ! routine called in step module |
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[2048] | 43 | |
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[2715] | 44 | LOGICAL , PUBLIC, PARAMETER :: lk_zdfgls = .TRUE. !: TKE vertical mixing flag |
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| 45 | ! |
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| 46 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: mxln !: now mixing length |
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| 47 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: zwall !: wall function |
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| 48 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ustars2 !: Squared surface velocity scale at T-points |
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| 49 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ustarb2 !: Squared bottom velocity scale at T-points |
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[2048] | 50 | |
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[4147] | 51 | ! !! ** Namelist namzdf_gls ** |
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| 52 | LOGICAL :: ln_length_lim ! use limit on the dissipation rate under stable stratification (Galperin et al. 1988) |
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| 53 | LOGICAL :: ln_sigpsi ! Activate Burchard (2003) modification for k-eps closure & wave breaking mixing |
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[5109] | 54 | INTEGER :: nn_bc_surf ! surface boundary condition (=0/1) |
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| 55 | INTEGER :: nn_bc_bot ! bottom boundary condition (=0/1) |
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| 56 | INTEGER :: nn_z0_met ! Method for surface roughness computation |
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[4147] | 57 | INTEGER :: nn_stab_func ! stability functions G88, KC or Canuto (=0/1/2) |
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| 58 | INTEGER :: nn_clos ! closure 0/1/2/3 MY82/k-eps/k-w/gen |
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| 59 | REAL(wp) :: rn_clim_galp ! Holt 2008 value for k-eps: 0.267 |
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| 60 | REAL(wp) :: rn_epsmin ! minimum value of dissipation (m2/s3) |
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| 61 | REAL(wp) :: rn_emin ! minimum value of TKE (m2/s2) |
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| 62 | REAL(wp) :: rn_charn ! Charnock constant for surface breaking waves mixing : 1400. (standard) or 2.e5 (Stacey value) |
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| 63 | REAL(wp) :: rn_crban ! Craig and Banner constant for surface breaking waves mixing |
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[5109] | 64 | REAL(wp) :: rn_hsro ! Minimum surface roughness |
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| 65 | REAL(wp) :: rn_frac_hs ! Fraction of wave height as surface roughness (if nn_z0_met > 1) |
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[2048] | 66 | |
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[2397] | 67 | REAL(wp) :: rcm_sf = 0.73_wp ! Shear free turbulence parameters |
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| 68 | REAL(wp) :: ra_sf = -2.0_wp ! Must be negative -2 < ra_sf < -1 |
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| 69 | REAL(wp) :: rl_sf = 0.2_wp ! 0 <rl_sf<vkarmn |
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| 70 | REAL(wp) :: rghmin = -0.28_wp |
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| 71 | REAL(wp) :: rgh0 = 0.0329_wp |
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| 72 | REAL(wp) :: rghcri = 0.03_wp |
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[2299] | 73 | REAL(wp) :: ra1 = 0.92_wp |
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| 74 | REAL(wp) :: ra2 = 0.74_wp |
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| 75 | REAL(wp) :: rb1 = 16.60_wp |
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| 76 | REAL(wp) :: rb2 = 10.10_wp |
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| 77 | REAL(wp) :: re2 = 1.33_wp |
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| 78 | REAL(wp) :: rl1 = 0.107_wp |
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| 79 | REAL(wp) :: rl2 = 0.0032_wp |
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| 80 | REAL(wp) :: rl3 = 0.0864_wp |
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| 81 | REAL(wp) :: rl4 = 0.12_wp |
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| 82 | REAL(wp) :: rl5 = 11.9_wp |
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| 83 | REAL(wp) :: rl6 = 0.4_wp |
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| 84 | REAL(wp) :: rl7 = 0.0_wp |
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| 85 | REAL(wp) :: rl8 = 0.48_wp |
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| 86 | REAL(wp) :: rm1 = 0.127_wp |
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| 87 | REAL(wp) :: rm2 = 0.00336_wp |
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| 88 | REAL(wp) :: rm3 = 0.0906_wp |
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| 89 | REAL(wp) :: rm4 = 0.101_wp |
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| 90 | REAL(wp) :: rm5 = 11.2_wp |
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| 91 | REAL(wp) :: rm6 = 0.4_wp |
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| 92 | REAL(wp) :: rm7 = 0.0_wp |
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| 93 | REAL(wp) :: rm8 = 0.318_wp |
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[5109] | 94 | REAL(wp) :: rtrans = 0.1_wp |
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[2397] | 95 | REAL(wp) :: rc02, rc02r, rc03, rc04 ! coefficients deduced from above parameters |
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[5109] | 96 | REAL(wp) :: rsbc_tke1, rsbc_tke2, rfact_tke ! - - - - |
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| 97 | REAL(wp) :: rsbc_psi1, rsbc_psi2, rfact_psi ! - - - - |
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| 98 | REAL(wp) :: rsbc_zs1, rsbc_zs2 ! - - - - |
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[2397] | 99 | REAL(wp) :: rc0, rc2, rc3, rf6, rcff, rc_diff ! - - - - |
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| 100 | REAL(wp) :: rs0, rs1, rs2, rs4, rs5, rs6 ! - - - - |
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| 101 | REAL(wp) :: rd0, rd1, rd2, rd3, rd4, rd5 ! - - - - |
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| 102 | REAL(wp) :: rsc_tke, rsc_psi, rpsi1, rpsi2, rpsi3, rsc_psi0 ! - - - - |
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| 103 | REAL(wp) :: rpsi3m, rpsi3p, rpp, rmm, rnn ! - - - - |
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[2299] | 104 | |
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[2048] | 105 | !! * Substitutions |
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| 106 | # include "vectopt_loop_substitute.h90" |
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| 107 | !!---------------------------------------------------------------------- |
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[2287] | 108 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[2715] | 109 | !! $Id$ |
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[2329] | 110 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[2048] | 111 | !!---------------------------------------------------------------------- |
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| 112 | CONTAINS |
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| 113 | |
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[2715] | 114 | INTEGER FUNCTION zdf_gls_alloc() |
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| 115 | !!---------------------------------------------------------------------- |
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| 116 | !! *** FUNCTION zdf_gls_alloc *** |
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| 117 | !!---------------------------------------------------------------------- |
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[5656] | 118 | ALLOCATE( mxln(jpi,jpj,jpk), zwall(jpi,jpj,jpk) , & |
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[5836] | 119 | & ustars2(jpi,jpj) , ustarb2(jpi,jpj) , STAT= zdf_gls_alloc ) |
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[2715] | 120 | ! |
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| 121 | IF( lk_mpp ) CALL mpp_sum ( zdf_gls_alloc ) |
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| 122 | IF( zdf_gls_alloc /= 0 ) CALL ctl_warn('zdf_gls_alloc: failed to allocate arrays') |
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| 123 | END FUNCTION zdf_gls_alloc |
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| 124 | |
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| 125 | |
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[2048] | 126 | SUBROUTINE zdf_gls( kt ) |
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| 127 | !!---------------------------------------------------------------------- |
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| 128 | !! *** ROUTINE zdf_gls *** |
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| 129 | !! |
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| 130 | !! ** Purpose : Compute the vertical eddy viscosity and diffusivity |
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[2397] | 131 | !! coefficients using the GLS turbulent closure scheme. |
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[2048] | 132 | !!---------------------------------------------------------------------- |
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| 133 | INTEGER, INTENT(in) :: kt ! ocean time step |
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| 134 | INTEGER :: ji, jj, jk, ibot, ibotm1, dir ! dummy loop arguments |
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[2397] | 135 | REAL(wp) :: zesh2, zsigpsi, zcoef, zex1, zex2 ! local scalars |
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| 136 | REAL(wp) :: ztx2, zty2, zup, zdown, zcof ! - - |
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| 137 | REAL(wp) :: zratio, zrn2, zflxb, sh ! - - |
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| 138 | REAL(wp) :: prod, buoy, diss, zdiss, sm ! - - |
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| 139 | REAL(wp) :: gh, gm, shr, dif, zsqen, zav ! - - |
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[3294] | 140 | REAL(wp), POINTER, DIMENSION(:,: ) :: zdep |
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[5109] | 141 | REAL(wp), POINTER, DIMENSION(:,: ) :: zkar |
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[3294] | 142 | REAL(wp), POINTER, DIMENSION(:,: ) :: zflxs ! Turbulence fluxed induced by internal waves |
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| 143 | REAL(wp), POINTER, DIMENSION(:,: ) :: zhsro ! Surface roughness (surface waves) |
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| 144 | REAL(wp), POINTER, DIMENSION(:,:,:) :: eb ! tke at time before |
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| 145 | REAL(wp), POINTER, DIMENSION(:,:,:) :: mxlb ! mixing length at time before |
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| 146 | REAL(wp), POINTER, DIMENSION(:,:,:) :: shear ! vertical shear |
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| 147 | REAL(wp), POINTER, DIMENSION(:,:,:) :: eps ! dissipation rate |
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[5109] | 148 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zwall_psi ! Wall function use in the wb case (ln_sigpsi) |
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| 149 | REAL(wp), POINTER, DIMENSION(:,:,:) :: psi ! psi at time now |
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| 150 | REAL(wp), POINTER, DIMENSION(:,:,:) :: z_elem_a ! element of the first matrix diagonal |
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| 151 | REAL(wp), POINTER, DIMENSION(:,:,:) :: z_elem_b ! element of the second matrix diagonal |
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| 152 | REAL(wp), POINTER, DIMENSION(:,:,:) :: z_elem_c ! element of the third matrix diagonal |
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[2048] | 153 | !!-------------------------------------------------------------------- |
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[3294] | 154 | ! |
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| 155 | IF( nn_timing == 1 ) CALL timing_start('zdf_gls') |
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| 156 | ! |
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[5836] | 157 | CALL wrk_alloc( jpi,jpj, zdep, zkar, zflxs, zhsro ) |
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| 158 | CALL wrk_alloc( jpi,jpj,jpk, eb, mxlb, shear, eps, zwall_psi, z_elem_a, z_elem_b, z_elem_c, psi ) |
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[5109] | 159 | |
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[2048] | 160 | ! Preliminary computing |
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| 161 | |
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[2397] | 162 | ustars2 = 0._wp ; ustarb2 = 0._wp ; psi = 0._wp ; zwall_psi = 0._wp |
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[2048] | 163 | |
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[3798] | 164 | IF( kt /= nit000 ) THEN ! restore before value to compute tke |
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| 165 | avt (:,:,:) = avt_k (:,:,:) |
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| 166 | avm (:,:,:) = avm_k (:,:,:) |
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| 167 | avmu(:,:,:) = avmu_k(:,:,:) |
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| 168 | avmv(:,:,:) = avmv_k(:,:,:) |
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| 169 | ENDIF |
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| 170 | |
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[2497] | 171 | ! Compute surface and bottom friction at T-points |
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[5109] | 172 | DO jj = 2, jpjm1 |
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| 173 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 174 | ! |
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| 175 | ! surface friction |
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[3625] | 176 | ustars2(ji,jj) = r1_rau0 * taum(ji,jj) * tmask(ji,jj,1) |
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[5109] | 177 | ! |
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| 178 | ! bottom friction (explicit before friction) |
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| 179 | ! Note that we chose here not to bound the friction as in dynbfr) |
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| 180 | ztx2 = ( bfrua(ji,jj) * ub(ji,jj,mbku(ji,jj)) + bfrua(ji-1,jj) * ub(ji-1,jj,mbku(ji-1,jj)) ) & |
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| 181 | & * ( 1._wp - 0.5_wp * umask(ji,jj,1) * umask(ji-1,jj,1) ) |
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| 182 | zty2 = ( bfrva(ji,jj) * vb(ji,jj,mbkv(ji,jj)) + bfrva(ji,jj-1) * vb(ji,jj-1,mbkv(ji,jj-1)) ) & |
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| 183 | & * ( 1._wp - 0.5_wp * vmask(ji,jj,1) * vmask(ji,jj-1,1) ) |
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| 184 | ustarb2(ji,jj) = SQRT( ztx2 * ztx2 + zty2 * zty2 ) * tmask(ji,jj,1) |
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| 185 | END DO |
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| 186 | END DO |
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[2048] | 187 | |
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[5109] | 188 | ! Set surface roughness length |
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| 189 | SELECT CASE ( nn_z0_met ) |
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| 190 | ! |
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| 191 | CASE ( 0 ) ! Constant roughness |
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| 192 | zhsro(:,:) = rn_hsro |
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| 193 | CASE ( 1 ) ! Standard Charnock formula |
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| 194 | zhsro(:,:) = MAX(rsbc_zs1 * ustars2(:,:), rn_hsro) |
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| 195 | CASE ( 2 ) ! Roughness formulae according to Rascle et al., Ocean Modelling (2008) |
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| 196 | zdep(:,:) = 30.*TANH(2.*0.3/(28.*SQRT(MAX(ustars2(:,:),rsmall)))) ! Wave age (eq. 10) |
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| 197 | zhsro(:,:) = MAX(rsbc_zs2 * ustars2(:,:) * zdep(:,:)**1.5, rn_hsro) ! zhsro = rn_frac_hs * Hsw (eq. 11) |
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[7646] | 198 | CASE ( 3 ) ! Roughness given by the wave model (coupled or read in file) |
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| 199 | zhsro(:,:) = hsw(:,:) |
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[5109] | 200 | END SELECT |
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[2048] | 201 | |
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| 202 | ! Compute shear and dissipation rate |
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| 203 | DO jk = 2, jpkm1 |
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| 204 | DO jj = 2, jpjm1 |
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| 205 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 206 | avmu(ji,jj,jk) = avmu(ji,jj,jk) * ( un(ji,jj,jk-1) - un(ji,jj,jk) ) & |
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| 207 | & * ( ub(ji,jj,jk-1) - ub(ji,jj,jk) ) & |
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[6140] | 208 | & / ( e3uw_n(ji,jj,jk) * e3uw_b(ji,jj,jk) ) |
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[2048] | 209 | avmv(ji,jj,jk) = avmv(ji,jj,jk) * ( vn(ji,jj,jk-1) - vn(ji,jj,jk) ) & |
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| 210 | & * ( vb(ji,jj,jk-1) - vb(ji,jj,jk) ) & |
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[6140] | 211 | & / ( e3vw_n(ji,jj,jk) * e3vw_b(ji,jj,jk) ) |
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[2299] | 212 | eps(ji,jj,jk) = rc03 * en(ji,jj,jk) * SQRT(en(ji,jj,jk)) / mxln(ji,jj,jk) |
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[2397] | 213 | END DO |
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| 214 | END DO |
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| 215 | END DO |
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[2048] | 216 | ! |
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| 217 | ! Lateral boundary conditions (avmu,avmv) (sign unchanged) |
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[2397] | 218 | CALL lbc_lnk( avmu, 'U', 1. ) ; CALL lbc_lnk( avmv, 'V', 1. ) |
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[2048] | 219 | |
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| 220 | ! Save tke at before time step |
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| 221 | eb (:,:,:) = en (:,:,:) |
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| 222 | mxlb(:,:,:) = mxln(:,:,:) |
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| 223 | |
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[2397] | 224 | IF( nn_clos == 0 ) THEN ! Mellor-Yamada |
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[2048] | 225 | DO jk = 2, jpkm1 |
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| 226 | DO jj = 2, jpjm1 |
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| 227 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[6140] | 228 | zup = mxln(ji,jj,jk) * gdepw_n(ji,jj,mbkt(ji,jj)+1) |
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| 229 | zdown = vkarmn * gdepw_n(ji,jj,jk) * ( -gdepw_n(ji,jj,jk) + gdepw_n(ji,jj,mbkt(ji,jj)+1) ) |
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[2397] | 230 | zcoef = ( zup / MAX( zdown, rsmall ) ) |
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| 231 | zwall (ji,jj,jk) = ( 1._wp + re2 * zcoef*zcoef ) * tmask(ji,jj,jk) |
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| 232 | END DO |
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| 233 | END DO |
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| 234 | END DO |
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[2048] | 235 | ENDIF |
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| 236 | |
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| 237 | !!---------------------------------!! |
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| 238 | !! Equation to prognostic k !! |
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| 239 | !!---------------------------------!! |
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| 240 | ! |
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| 241 | ! Now Turbulent kinetic energy (output in en) |
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| 242 | ! ------------------------------- |
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| 243 | ! Resolution of a tridiagonal linear system by a "methode de chasse" |
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| 244 | ! computation from level 2 to jpkm1 (e(1) computed after and e(jpk)=0 ). |
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| 245 | ! The surface boundary condition are set after |
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| 246 | ! The bottom boundary condition are also set after. In standard e(bottom)=0. |
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| 247 | ! z_elem_b : diagonal z_elem_c : upper diagonal z_elem_a : lower diagonal |
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| 248 | ! Warning : after this step, en : right hand side of the matrix |
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| 249 | |
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| 250 | DO jk = 2, jpkm1 |
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| 251 | DO jj = 2, jpjm1 |
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| 252 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 253 | ! |
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| 254 | ! shear prod. at w-point weightened by mask |
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| 255 | shear(ji,jj,jk) = ( avmu(ji-1,jj,jk) + avmu(ji,jj,jk) ) / MAX( 1.e0 , umask(ji-1,jj,jk) + umask(ji,jj,jk) ) & |
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| 256 | & + ( avmv(ji,jj-1,jk) + avmv(ji,jj,jk) ) / MAX( 1.e0 , vmask(ji,jj-1,jk) + vmask(ji,jj,jk) ) |
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| 257 | ! |
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| 258 | ! stratif. destruction |
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| 259 | buoy = - avt(ji,jj,jk) * rn2(ji,jj,jk) |
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| 260 | ! |
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| 261 | ! shear prod. - stratif. destruction |
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| 262 | diss = eps(ji,jj,jk) |
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| 263 | ! |
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[2397] | 264 | dir = 0.5_wp + SIGN( 0.5_wp, shear(ji,jj,jk) + buoy ) ! dir =1(=0) if shear(ji,jj,jk)+buoy >0(<0) |
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[2048] | 265 | ! |
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[2397] | 266 | zesh2 = dir*(shear(ji,jj,jk)+buoy)+(1._wp-dir)*shear(ji,jj,jk) ! production term |
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| 267 | zdiss = dir*(diss/en(ji,jj,jk)) +(1._wp-dir)*(diss-buoy)/en(ji,jj,jk) ! dissipation term |
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[2048] | 268 | ! |
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[2299] | 269 | ! Compute a wall function from 1. to rsc_psi*zwall/rsc_psi0 |
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[2048] | 270 | ! Note that as long that Dirichlet boundary conditions are NOT set at the first and last levels (GOTM style) |
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| 271 | ! there is no need to set a boundary condition for zwall_psi at the top and bottom boundaries. |
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[2299] | 272 | ! Otherwise, this should be rsc_psi/rsc_psi0 |
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[2397] | 273 | IF( ln_sigpsi ) THEN |
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| 274 | zsigpsi = MIN( 1._wp, zesh2 / eps(ji,jj,jk) ) ! 0. <= zsigpsi <= 1. |
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[3294] | 275 | zwall_psi(ji,jj,jk) = rsc_psi / & |
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| 276 | & ( zsigpsi * rsc_psi + (1._wp-zsigpsi) * rsc_psi0 / MAX( zwall(ji,jj,jk), 1._wp ) ) |
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[2048] | 277 | ELSE |
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[2397] | 278 | zwall_psi(ji,jj,jk) = 1._wp |
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[2048] | 279 | ENDIF |
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| 280 | ! |
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| 281 | ! building the matrix |
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[2299] | 282 | zcof = rfact_tke * tmask(ji,jj,jk) |
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[2048] | 283 | ! |
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| 284 | ! lower diagonal |
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| 285 | z_elem_a(ji,jj,jk) = zcof * ( avm (ji,jj,jk ) + avm (ji,jj,jk-1) ) & |
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[6140] | 286 | & / ( e3t_n(ji,jj,jk-1) * e3w_n(ji,jj,jk ) ) |
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[2048] | 287 | ! |
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| 288 | ! upper diagonal |
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| 289 | z_elem_c(ji,jj,jk) = zcof * ( avm (ji,jj,jk+1) + avm (ji,jj,jk ) ) & |
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[6140] | 290 | & / ( e3t_n(ji,jj,jk ) * e3w_n(ji,jj,jk) ) |
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[2048] | 291 | ! |
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| 292 | ! diagonal |
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[2397] | 293 | z_elem_b(ji,jj,jk) = 1._wp - z_elem_a(ji,jj,jk) - z_elem_c(ji,jj,jk) & |
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| 294 | & + rdt * zdiss * tmask(ji,jj,jk) |
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[2048] | 295 | ! |
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| 296 | ! right hand side in en |
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| 297 | en(ji,jj,jk) = en(ji,jj,jk) + rdt * zesh2 * tmask(ji,jj,jk) |
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| 298 | END DO |
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| 299 | END DO |
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| 300 | END DO |
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| 301 | ! |
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[2397] | 302 | z_elem_b(:,:,jpk) = 1._wp |
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[2048] | 303 | ! |
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| 304 | ! Set surface condition on zwall_psi (1 at the bottom) |
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[5109] | 305 | zwall_psi(:,:,1) = zwall_psi(:,:,2) |
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| 306 | zwall_psi(:,:,jpk) = 1. |
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| 307 | ! |
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[2048] | 308 | ! Surface boundary condition on tke |
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| 309 | ! --------------------------------- |
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| 310 | ! |
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[5109] | 311 | SELECT CASE ( nn_bc_surf ) |
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[2048] | 312 | ! |
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| 313 | CASE ( 0 ) ! Dirichlet case |
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[5109] | 314 | ! First level |
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| 315 | en(:,:,1) = rc02r * ustars2(:,:) * (1._wp + rsbc_tke1)**(2._wp/3._wp) |
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| 316 | en(:,:,1) = MAX(en(:,:,1), rn_emin) |
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| 317 | z_elem_a(:,:,1) = en(:,:,1) |
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| 318 | z_elem_c(:,:,1) = 0._wp |
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| 319 | z_elem_b(:,:,1) = 1._wp |
---|
| 320 | ! |
---|
| 321 | ! One level below |
---|
[6140] | 322 | en(:,:,2) = rc02r * ustars2(:,:) * (1._wp + rsbc_tke1 * ((zhsro(:,:)+gdepw_n(:,:,2)) & |
---|
[5611] | 323 | & / zhsro(:,:) )**(1.5_wp*ra_sf))**(2._wp/3._wp) |
---|
[5109] | 324 | en(:,:,2) = MAX(en(:,:,2), rn_emin ) |
---|
| 325 | z_elem_a(:,:,2) = 0._wp |
---|
| 326 | z_elem_c(:,:,2) = 0._wp |
---|
| 327 | z_elem_b(:,:,2) = 1._wp |
---|
| 328 | ! |
---|
| 329 | ! |
---|
[2048] | 330 | CASE ( 1 ) ! Neumann boundary condition on d(e)/dz |
---|
[5109] | 331 | ! |
---|
| 332 | ! Dirichlet conditions at k=1 |
---|
| 333 | en(:,:,1) = rc02r * ustars2(:,:) * (1._wp + rsbc_tke1)**(2._wp/3._wp) |
---|
| 334 | en(:,:,1) = MAX(en(:,:,1), rn_emin) |
---|
| 335 | z_elem_a(:,:,1) = en(:,:,1) |
---|
| 336 | z_elem_c(:,:,1) = 0._wp |
---|
| 337 | z_elem_b(:,:,1) = 1._wp |
---|
| 338 | ! |
---|
| 339 | ! at k=2, set de/dz=Fw |
---|
| 340 | !cbr |
---|
| 341 | z_elem_b(:,:,2) = z_elem_b(:,:,2) + z_elem_a(:,:,2) ! Remove z_elem_a from z_elem_b |
---|
| 342 | z_elem_a(:,:,2) = 0._wp |
---|
[6140] | 343 | zkar(:,:) = (rl_sf + (vkarmn-rl_sf)*(1.-exp(-rtrans*gdept_n(:,:,1)/zhsro(:,:)) )) |
---|
[5611] | 344 | zflxs(:,:) = rsbc_tke2 * ustars2(:,:)**1.5_wp * zkar(:,:) & |
---|
[6140] | 345 | & * ((zhsro(:,:)+gdept_n(:,:,1)) / zhsro(:,:) )**(1.5_wp*ra_sf) |
---|
[5109] | 346 | |
---|
[6140] | 347 | en(:,:,2) = en(:,:,2) + zflxs(:,:)/e3w_n(:,:,2) |
---|
[5109] | 348 | ! |
---|
| 349 | ! |
---|
[2048] | 350 | END SELECT |
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| 351 | |
---|
| 352 | ! Bottom boundary condition on tke |
---|
| 353 | ! -------------------------------- |
---|
| 354 | ! |
---|
[5109] | 355 | SELECT CASE ( nn_bc_bot ) |
---|
[2048] | 356 | ! |
---|
| 357 | CASE ( 0 ) ! Dirichlet |
---|
[2397] | 358 | ! ! en(ibot) = u*^2 / Co2 and mxln(ibot) = rn_lmin |
---|
| 359 | ! ! Balance between the production and the dissipation terms |
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| 360 | DO jj = 2, jpjm1 |
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| 361 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[2450] | 362 | ibot = mbkt(ji,jj) + 1 ! k bottom level of w-point |
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| 363 | ibotm1 = mbkt(ji,jj) ! k-1 bottom level of w-point but >=1 |
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[2397] | 364 | ! |
---|
| 365 | ! Bottom level Dirichlet condition: |
---|
| 366 | z_elem_a(ji,jj,ibot ) = 0._wp |
---|
| 367 | z_elem_c(ji,jj,ibot ) = 0._wp |
---|
| 368 | z_elem_b(ji,jj,ibot ) = 1._wp |
---|
| 369 | en(ji,jj,ibot ) = MAX( rc02r * ustarb2(ji,jj), rn_emin ) |
---|
| 370 | ! |
---|
| 371 | ! Just above last level, Dirichlet condition again |
---|
| 372 | z_elem_a(ji,jj,ibotm1) = 0._wp |
---|
| 373 | z_elem_c(ji,jj,ibotm1) = 0._wp |
---|
| 374 | z_elem_b(ji,jj,ibotm1) = 1._wp |
---|
| 375 | en(ji,jj,ibotm1) = MAX( rc02r * ustarb2(ji,jj), rn_emin ) |
---|
| 376 | END DO |
---|
[2048] | 377 | END DO |
---|
[2397] | 378 | ! |
---|
[2048] | 379 | CASE ( 1 ) ! Neumman boundary condition |
---|
[2397] | 380 | ! |
---|
| 381 | DO jj = 2, jpjm1 |
---|
| 382 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[2450] | 383 | ibot = mbkt(ji,jj) + 1 ! k bottom level of w-point |
---|
| 384 | ibotm1 = mbkt(ji,jj) ! k-1 bottom level of w-point but >=1 |
---|
[2397] | 385 | ! |
---|
| 386 | ! Bottom level Dirichlet condition: |
---|
| 387 | z_elem_a(ji,jj,ibot) = 0._wp |
---|
| 388 | z_elem_c(ji,jj,ibot) = 0._wp |
---|
| 389 | z_elem_b(ji,jj,ibot) = 1._wp |
---|
| 390 | en(ji,jj,ibot) = MAX( rc02r * ustarb2(ji,jj), rn_emin ) |
---|
| 391 | ! |
---|
| 392 | ! Just above last level: Neumann condition |
---|
| 393 | z_elem_b(ji,jj,ibotm1) = z_elem_b(ji,jj,ibotm1) + z_elem_c(ji,jj,ibotm1) ! Remove z_elem_c from z_elem_b |
---|
| 394 | z_elem_c(ji,jj,ibotm1) = 0._wp |
---|
| 395 | END DO |
---|
[2048] | 396 | END DO |
---|
[2397] | 397 | ! |
---|
[2048] | 398 | END SELECT |
---|
| 399 | |
---|
| 400 | ! Matrix inversion (en prescribed at surface and the bottom) |
---|
| 401 | ! ---------------------------------------------------------- |
---|
| 402 | ! |
---|
| 403 | DO jk = 2, jpkm1 ! First recurrence : Dk = Dk - Lk * Uk-1 / Dk-1 |
---|
| 404 | DO jj = 2, jpjm1 |
---|
| 405 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 406 | z_elem_b(ji,jj,jk) = z_elem_b(ji,jj,jk) - z_elem_a(ji,jj,jk) * z_elem_c(ji,jj,jk-1) / z_elem_b(ji,jj,jk-1) |
---|
| 407 | END DO |
---|
| 408 | END DO |
---|
| 409 | END DO |
---|
| 410 | DO jk = 2, jpk ! Second recurrence : Lk = RHSk - Lk / Dk-1 * Lk-1 |
---|
| 411 | DO jj = 2, jpjm1 |
---|
| 412 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 413 | z_elem_a(ji,jj,jk) = en(ji,jj,jk) - z_elem_a(ji,jj,jk) / z_elem_b(ji,jj,jk-1) * z_elem_a(ji,jj,jk-1) |
---|
| 414 | END DO |
---|
| 415 | END DO |
---|
| 416 | END DO |
---|
| 417 | DO jk = jpk-1, 2, -1 ! thrid recurrence : Ek = ( Lk - Uk * Ek+1 ) / Dk |
---|
| 418 | DO jj = 2, jpjm1 |
---|
| 419 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 420 | en(ji,jj,jk) = ( z_elem_a(ji,jj,jk) - z_elem_c(ji,jj,jk) * en(ji,jj,jk+1) ) / z_elem_b(ji,jj,jk) |
---|
| 421 | END DO |
---|
| 422 | END DO |
---|
| 423 | END DO |
---|
[2397] | 424 | ! ! set the minimum value of tke |
---|
[2048] | 425 | en(:,:,:) = MAX( en(:,:,:), rn_emin ) |
---|
[5109] | 426 | |
---|
[2048] | 427 | !!----------------------------------------!! |
---|
| 428 | !! Solve prognostic equation for psi !! |
---|
| 429 | !!----------------------------------------!! |
---|
| 430 | |
---|
| 431 | ! Set psi to previous time step value |
---|
| 432 | ! |
---|
| 433 | SELECT CASE ( nn_clos ) |
---|
| 434 | ! |
---|
| 435 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
[2397] | 436 | DO jk = 2, jpkm1 |
---|
| 437 | DO jj = 2, jpjm1 |
---|
| 438 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[3294] | 439 | psi(ji,jj,jk) = eb(ji,jj,jk) * mxlb(ji,jj,jk) |
---|
[2397] | 440 | END DO |
---|
| 441 | END DO |
---|
| 442 | END DO |
---|
| 443 | ! |
---|
[2048] | 444 | CASE( 1 ) ! k-eps |
---|
[2397] | 445 | DO jk = 2, jpkm1 |
---|
| 446 | DO jj = 2, jpjm1 |
---|
| 447 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 448 | psi(ji,jj,jk) = eps(ji,jj,jk) |
---|
| 449 | END DO |
---|
| 450 | END DO |
---|
| 451 | END DO |
---|
| 452 | ! |
---|
[2048] | 453 | CASE( 2 ) ! k-w |
---|
[2397] | 454 | DO jk = 2, jpkm1 |
---|
| 455 | DO jj = 2, jpjm1 |
---|
| 456 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[3294] | 457 | psi(ji,jj,jk) = SQRT( eb(ji,jj,jk) ) / ( rc0 * mxlb(ji,jj,jk) ) |
---|
[2397] | 458 | END DO |
---|
| 459 | END DO |
---|
| 460 | END DO |
---|
| 461 | ! |
---|
| 462 | CASE( 3 ) ! generic |
---|
| 463 | DO jk = 2, jpkm1 |
---|
| 464 | DO jj = 2, jpjm1 |
---|
| 465 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[3294] | 466 | psi(ji,jj,jk) = rc02 * eb(ji,jj,jk) * mxlb(ji,jj,jk)**rnn |
---|
[2397] | 467 | END DO |
---|
| 468 | END DO |
---|
| 469 | END DO |
---|
| 470 | ! |
---|
[2048] | 471 | END SELECT |
---|
| 472 | ! |
---|
| 473 | ! Now gls (output in psi) |
---|
| 474 | ! ------------------------------- |
---|
| 475 | ! Resolution of a tridiagonal linear system by a "methode de chasse" |
---|
| 476 | ! computation from level 2 to jpkm1 (e(1) already computed and e(jpk)=0 ). |
---|
| 477 | ! z_elem_b : diagonal z_elem_c : upper diagonal z_elem_a : lower diagonal |
---|
| 478 | ! Warning : after this step, en : right hand side of the matrix |
---|
| 479 | |
---|
| 480 | DO jk = 2, jpkm1 |
---|
| 481 | DO jj = 2, jpjm1 |
---|
| 482 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 483 | ! |
---|
| 484 | ! psi / k |
---|
| 485 | zratio = psi(ji,jj,jk) / eb(ji,jj,jk) |
---|
| 486 | ! |
---|
| 487 | ! psi3+ : stable : B=-KhN²<0 => N²>0 if rn2>0 dir = 1 (stable) otherwise dir = 0 (unstable) |
---|
[2397] | 488 | dir = 0.5_wp + SIGN( 0.5_wp, rn2(ji,jj,jk) ) |
---|
[2048] | 489 | ! |
---|
[2397] | 490 | rpsi3 = dir * rpsi3m + ( 1._wp - dir ) * rpsi3p |
---|
[2048] | 491 | ! |
---|
| 492 | ! shear prod. - stratif. destruction |
---|
[2299] | 493 | prod = rpsi1 * zratio * shear(ji,jj,jk) |
---|
[2048] | 494 | ! |
---|
| 495 | ! stratif. destruction |
---|
[2397] | 496 | buoy = rpsi3 * zratio * (- avt(ji,jj,jk) * rn2(ji,jj,jk) ) |
---|
[2048] | 497 | ! |
---|
| 498 | ! shear prod. - stratif. destruction |
---|
[2299] | 499 | diss = rpsi2 * zratio * zwall(ji,jj,jk) * eps(ji,jj,jk) |
---|
[2048] | 500 | ! |
---|
[2397] | 501 | dir = 0.5_wp + SIGN( 0.5_wp, prod + buoy ) ! dir =1(=0) if shear(ji,jj,jk)+buoy >0(<0) |
---|
[2048] | 502 | ! |
---|
[2397] | 503 | zesh2 = dir * ( prod + buoy ) + (1._wp - dir ) * prod ! production term |
---|
| 504 | zdiss = dir * ( diss / psi(ji,jj,jk) ) + (1._wp - dir ) * (diss-buoy) / psi(ji,jj,jk) ! dissipation term |
---|
[2048] | 505 | ! |
---|
| 506 | ! building the matrix |
---|
[2299] | 507 | zcof = rfact_psi * zwall_psi(ji,jj,jk) * tmask(ji,jj,jk) |
---|
[2048] | 508 | ! lower diagonal |
---|
| 509 | z_elem_a(ji,jj,jk) = zcof * ( avm (ji,jj,jk ) + avm (ji,jj,jk-1) ) & |
---|
[6140] | 510 | & / ( e3t_n(ji,jj,jk-1) * e3w_n(ji,jj,jk ) ) |
---|
[2048] | 511 | ! upper diagonal |
---|
| 512 | z_elem_c(ji,jj,jk) = zcof * ( avm (ji,jj,jk+1) + avm (ji,jj,jk ) ) & |
---|
[6140] | 513 | & / ( e3t_n(ji,jj,jk ) * e3w_n(ji,jj,jk) ) |
---|
[2048] | 514 | ! diagonal |
---|
[2397] | 515 | z_elem_b(ji,jj,jk) = 1._wp - z_elem_a(ji,jj,jk) - z_elem_c(ji,jj,jk) & |
---|
| 516 | & + rdt * zdiss * tmask(ji,jj,jk) |
---|
[2048] | 517 | ! |
---|
| 518 | ! right hand side in psi |
---|
| 519 | psi(ji,jj,jk) = psi(ji,jj,jk) + rdt * zesh2 * tmask(ji,jj,jk) |
---|
| 520 | END DO |
---|
| 521 | END DO |
---|
| 522 | END DO |
---|
| 523 | ! |
---|
[2397] | 524 | z_elem_b(:,:,jpk) = 1._wp |
---|
[2048] | 525 | |
---|
| 526 | ! Surface boundary condition on psi |
---|
| 527 | ! --------------------------------- |
---|
| 528 | ! |
---|
[5109] | 529 | SELECT CASE ( nn_bc_surf ) |
---|
[2048] | 530 | ! |
---|
| 531 | CASE ( 0 ) ! Dirichlet boundary conditions |
---|
[5109] | 532 | ! |
---|
| 533 | ! Surface value |
---|
| 534 | zdep(:,:) = zhsro(:,:) * rl_sf ! Cosmetic |
---|
| 535 | psi (:,:,1) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
| 536 | z_elem_a(:,:,1) = psi(:,:,1) |
---|
| 537 | z_elem_c(:,:,1) = 0._wp |
---|
| 538 | z_elem_b(:,:,1) = 1._wp |
---|
| 539 | ! |
---|
| 540 | ! One level below |
---|
[6140] | 541 | zkar(:,:) = (rl_sf + (vkarmn-rl_sf)*(1._wp-exp(-rtrans*gdepw_n(:,:,2)/zhsro(:,:) ))) |
---|
| 542 | zdep(:,:) = (zhsro(:,:) + gdepw_n(:,:,2)) * zkar(:,:) |
---|
[5109] | 543 | psi (:,:,2) = rc0**rpp * en(:,:,2)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
| 544 | z_elem_a(:,:,2) = 0._wp |
---|
| 545 | z_elem_c(:,:,2) = 0._wp |
---|
| 546 | z_elem_b(:,:,2) = 1._wp |
---|
| 547 | ! |
---|
| 548 | ! |
---|
[2048] | 549 | CASE ( 1 ) ! Neumann boundary condition on d(psi)/dz |
---|
[5109] | 550 | ! |
---|
| 551 | ! Surface value: Dirichlet |
---|
| 552 | zdep(:,:) = zhsro(:,:) * rl_sf |
---|
| 553 | psi (:,:,1) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
| 554 | z_elem_a(:,:,1) = psi(:,:,1) |
---|
| 555 | z_elem_c(:,:,1) = 0._wp |
---|
| 556 | z_elem_b(:,:,1) = 1._wp |
---|
| 557 | ! |
---|
| 558 | ! Neumann condition at k=2 |
---|
| 559 | z_elem_b(:,:,2) = z_elem_b(:,:,2) + z_elem_a(:,:,2) ! Remove z_elem_a from z_elem_b |
---|
| 560 | z_elem_a(:,:,2) = 0._wp |
---|
| 561 | ! |
---|
| 562 | ! Set psi vertical flux at the surface: |
---|
[6140] | 563 | zkar(:,:) = rl_sf + (vkarmn-rl_sf)*(1._wp-exp(-rtrans*gdept_n(:,:,1)/zhsro(:,:) )) ! Lengh scale slope |
---|
| 564 | zdep(:,:) = ((zhsro(:,:) + gdept_n(:,:,1)) / zhsro(:,:))**(rmm*ra_sf) |
---|
[5109] | 565 | zflxs(:,:) = (rnn + rsbc_tke1 * (rnn + rmm*ra_sf) * zdep(:,:))*(1._wp + rsbc_tke1*zdep(:,:))**(2._wp*rmm/3._wp-1_wp) |
---|
| 566 | zdep(:,:) = rsbc_psi1 * (zwall_psi(:,:,1)*avm(:,:,1)+zwall_psi(:,:,2)*avm(:,:,2)) * & |
---|
[6140] | 567 | & ustars2(:,:)**rmm * zkar(:,:)**rnn * (zhsro(:,:) + gdept_n(:,:,1))**(rnn-1.) |
---|
[5109] | 568 | zflxs(:,:) = zdep(:,:) * zflxs(:,:) |
---|
[6140] | 569 | psi(:,:,2) = psi(:,:,2) + zflxs(:,:) / e3w_n(:,:,2) |
---|
[5109] | 570 | |
---|
| 571 | ! |
---|
| 572 | ! |
---|
[2048] | 573 | END SELECT |
---|
| 574 | |
---|
| 575 | ! Bottom boundary condition on psi |
---|
| 576 | ! -------------------------------- |
---|
| 577 | ! |
---|
[5109] | 578 | SELECT CASE ( nn_bc_bot ) |
---|
[2048] | 579 | ! |
---|
[5109] | 580 | ! |
---|
[2048] | 581 | CASE ( 0 ) ! Dirichlet |
---|
[5109] | 582 | ! ! en(ibot) = u*^2 / Co2 and mxln(ibot) = vkarmn * rn_bfrz0 |
---|
[2397] | 583 | ! ! Balance between the production and the dissipation terms |
---|
| 584 | DO jj = 2, jpjm1 |
---|
| 585 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[2450] | 586 | ibot = mbkt(ji,jj) + 1 ! k bottom level of w-point |
---|
| 587 | ibotm1 = mbkt(ji,jj) ! k-1 bottom level of w-point but >=1 |
---|
[5109] | 588 | zdep(ji,jj) = vkarmn * rn_bfrz0 |
---|
[2397] | 589 | psi (ji,jj,ibot) = rc0**rpp * en(ji,jj,ibot)**rmm * zdep(ji,jj)**rnn |
---|
| 590 | z_elem_a(ji,jj,ibot) = 0._wp |
---|
| 591 | z_elem_c(ji,jj,ibot) = 0._wp |
---|
| 592 | z_elem_b(ji,jj,ibot) = 1._wp |
---|
| 593 | ! |
---|
| 594 | ! Just above last level, Dirichlet condition again (GOTM like) |
---|
[6140] | 595 | zdep(ji,jj) = vkarmn * ( rn_bfrz0 + e3t_n(ji,jj,ibotm1) ) |
---|
[2397] | 596 | psi (ji,jj,ibotm1) = rc0**rpp * en(ji,jj,ibot )**rmm * zdep(ji,jj)**rnn |
---|
| 597 | z_elem_a(ji,jj,ibotm1) = 0._wp |
---|
| 598 | z_elem_c(ji,jj,ibotm1) = 0._wp |
---|
| 599 | z_elem_b(ji,jj,ibotm1) = 1._wp |
---|
| 600 | END DO |
---|
[2048] | 601 | END DO |
---|
[2397] | 602 | ! |
---|
[2048] | 603 | CASE ( 1 ) ! Neumman boundary condition |
---|
[2397] | 604 | ! |
---|
| 605 | DO jj = 2, jpjm1 |
---|
| 606 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[2450] | 607 | ibot = mbkt(ji,jj) + 1 ! k bottom level of w-point |
---|
| 608 | ibotm1 = mbkt(ji,jj) ! k-1 bottom level of w-point but >=1 |
---|
[2397] | 609 | ! |
---|
| 610 | ! Bottom level Dirichlet condition: |
---|
[5109] | 611 | zdep(ji,jj) = vkarmn * rn_bfrz0 |
---|
[2397] | 612 | psi (ji,jj,ibot) = rc0**rpp * en(ji,jj,ibot)**rmm * zdep(ji,jj)**rnn |
---|
| 613 | ! |
---|
| 614 | z_elem_a(ji,jj,ibot) = 0._wp |
---|
| 615 | z_elem_c(ji,jj,ibot) = 0._wp |
---|
| 616 | z_elem_b(ji,jj,ibot) = 1._wp |
---|
| 617 | ! |
---|
| 618 | ! Just above last level: Neumann condition with flux injection |
---|
| 619 | z_elem_b(ji,jj,ibotm1) = z_elem_b(ji,jj,ibotm1) + z_elem_c(ji,jj,ibotm1) ! Remove z_elem_c from z_elem_b |
---|
| 620 | z_elem_c(ji,jj,ibotm1) = 0. |
---|
| 621 | ! |
---|
| 622 | ! Set psi vertical flux at the bottom: |
---|
[6140] | 623 | zdep(ji,jj) = rn_bfrz0 + 0.5_wp*e3t_n(ji,jj,ibotm1) |
---|
[2397] | 624 | zflxb = rsbc_psi2 * ( avm(ji,jj,ibot) + avm(ji,jj,ibotm1) ) & |
---|
| 625 | & * (0.5_wp*(en(ji,jj,ibot)+en(ji,jj,ibotm1)))**rmm * zdep(ji,jj)**(rnn-1._wp) |
---|
[6140] | 626 | psi(ji,jj,ibotm1) = psi(ji,jj,ibotm1) + zflxb / e3w_n(ji,jj,ibotm1) |
---|
[2397] | 627 | END DO |
---|
[2048] | 628 | END DO |
---|
[2397] | 629 | ! |
---|
[2048] | 630 | END SELECT |
---|
| 631 | |
---|
| 632 | ! Matrix inversion |
---|
| 633 | ! ---------------- |
---|
| 634 | ! |
---|
| 635 | DO jk = 2, jpkm1 ! First recurrence : Dk = Dk - Lk * Uk-1 / Dk-1 |
---|
| 636 | DO jj = 2, jpjm1 |
---|
| 637 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 638 | z_elem_b(ji,jj,jk) = z_elem_b(ji,jj,jk) - z_elem_a(ji,jj,jk) * z_elem_c(ji,jj,jk-1) / z_elem_b(ji,jj,jk-1) |
---|
| 639 | END DO |
---|
| 640 | END DO |
---|
| 641 | END DO |
---|
| 642 | DO jk = 2, jpk ! Second recurrence : Lk = RHSk - Lk / Dk-1 * Lk-1 |
---|
| 643 | DO jj = 2, jpjm1 |
---|
| 644 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 645 | z_elem_a(ji,jj,jk) = psi(ji,jj,jk) - z_elem_a(ji,jj,jk) / z_elem_b(ji,jj,jk-1) * z_elem_a(ji,jj,jk-1) |
---|
| 646 | END DO |
---|
| 647 | END DO |
---|
| 648 | END DO |
---|
| 649 | DO jk = jpk-1, 2, -1 ! Third recurrence : Ek = ( Lk - Uk * Ek+1 ) / Dk |
---|
| 650 | DO jj = 2, jpjm1 |
---|
| 651 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 652 | psi(ji,jj,jk) = ( z_elem_a(ji,jj,jk) - z_elem_c(ji,jj,jk) * psi(ji,jj,jk+1) ) / z_elem_b(ji,jj,jk) |
---|
| 653 | END DO |
---|
| 654 | END DO |
---|
| 655 | END DO |
---|
| 656 | |
---|
| 657 | ! Set dissipation |
---|
| 658 | !---------------- |
---|
| 659 | |
---|
| 660 | SELECT CASE ( nn_clos ) |
---|
| 661 | ! |
---|
| 662 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
[2397] | 663 | DO jk = 1, jpkm1 |
---|
| 664 | DO jj = 2, jpjm1 |
---|
| 665 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[5109] | 666 | eps(ji,jj,jk) = rc03 * en(ji,jj,jk) * en(ji,jj,jk) * SQRT( en(ji,jj,jk) ) / MAX( psi(ji,jj,jk), rn_epsmin) |
---|
[2397] | 667 | END DO |
---|
| 668 | END DO |
---|
| 669 | END DO |
---|
| 670 | ! |
---|
[2048] | 671 | CASE( 1 ) ! k-eps |
---|
[2397] | 672 | DO jk = 1, jpkm1 |
---|
| 673 | DO jj = 2, jpjm1 |
---|
| 674 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 675 | eps(ji,jj,jk) = psi(ji,jj,jk) |
---|
| 676 | END DO |
---|
| 677 | END DO |
---|
| 678 | END DO |
---|
| 679 | ! |
---|
[2048] | 680 | CASE( 2 ) ! k-w |
---|
[2397] | 681 | DO jk = 1, jpkm1 |
---|
| 682 | DO jj = 2, jpjm1 |
---|
| 683 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 684 | eps(ji,jj,jk) = rc04 * en(ji,jj,jk) * psi(ji,jj,jk) |
---|
| 685 | END DO |
---|
| 686 | END DO |
---|
| 687 | END DO |
---|
| 688 | ! |
---|
| 689 | CASE( 3 ) ! generic |
---|
| 690 | zcoef = rc0**( 3._wp + rpp/rnn ) |
---|
| 691 | zex1 = ( 1.5_wp + rmm/rnn ) |
---|
| 692 | zex2 = -1._wp / rnn |
---|
| 693 | DO jk = 1, jpkm1 |
---|
| 694 | DO jj = 2, jpjm1 |
---|
| 695 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 696 | eps(ji,jj,jk) = zcoef * en(ji,jj,jk)**zex1 * psi(ji,jj,jk)**zex2 |
---|
| 697 | END DO |
---|
| 698 | END DO |
---|
| 699 | END DO |
---|
| 700 | ! |
---|
[2048] | 701 | END SELECT |
---|
| 702 | |
---|
| 703 | ! Limit dissipation rate under stable stratification |
---|
| 704 | ! -------------------------------------------------- |
---|
| 705 | DO jk = 1, jpkm1 ! Note that this set boundary conditions on mxln at the same time |
---|
| 706 | DO jj = 2, jpjm1 |
---|
| 707 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 708 | ! limitation |
---|
| 709 | eps(ji,jj,jk) = MAX( eps(ji,jj,jk), rn_epsmin ) |
---|
[2397] | 710 | mxln(ji,jj,jk) = rc03 * en(ji,jj,jk) * SQRT( en(ji,jj,jk) ) / eps(ji,jj,jk) |
---|
[2048] | 711 | ! Galperin criterium (NOTE : Not required if the proper value of C3 in stable cases is calculated) |
---|
| 712 | zrn2 = MAX( rn2(ji,jj,jk), rsmall ) |
---|
[5109] | 713 | IF (ln_length_lim) mxln(ji,jj,jk) = MIN( rn_clim_galp * SQRT( 2._wp * en(ji,jj,jk) / zrn2 ), mxln(ji,jj,jk) ) |
---|
[2048] | 714 | END DO |
---|
| 715 | END DO |
---|
| 716 | END DO |
---|
| 717 | |
---|
| 718 | ! |
---|
| 719 | ! Stability function and vertical viscosity and diffusivity |
---|
| 720 | ! --------------------------------------------------------- |
---|
| 721 | ! |
---|
| 722 | SELECT CASE ( nn_stab_func ) |
---|
| 723 | ! |
---|
| 724 | CASE ( 0 , 1 ) ! Galperin or Kantha-Clayson stability functions |
---|
[2397] | 725 | DO jk = 2, jpkm1 |
---|
| 726 | DO jj = 2, jpjm1 |
---|
| 727 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 728 | ! zcof = l²/q² |
---|
| 729 | zcof = mxlb(ji,jj,jk) * mxlb(ji,jj,jk) / ( 2._wp*eb(ji,jj,jk) ) |
---|
| 730 | ! Gh = -N²l²/q² |
---|
| 731 | gh = - rn2(ji,jj,jk) * zcof |
---|
| 732 | gh = MIN( gh, rgh0 ) |
---|
| 733 | gh = MAX( gh, rghmin ) |
---|
| 734 | ! Stability functions from Kantha and Clayson (if C2=C3=0 => Galperin) |
---|
| 735 | sh = ra2*( 1._wp-6._wp*ra1/rb1 ) / ( 1.-3.*ra2*gh*(6.*ra1+rb2*( 1._wp-rc3 ) ) ) |
---|
| 736 | sm = ( rb1**(-1._wp/3._wp) + ( 18._wp*ra1*ra1 + 9._wp*ra1*ra2*(1._wp-rc2) )*sh*gh ) / (1._wp-9._wp*ra1*ra2*gh) |
---|
| 737 | ! |
---|
| 738 | ! Store stability function in avmu and avmv |
---|
| 739 | avmu(ji,jj,jk) = rc_diff * sh * tmask(ji,jj,jk) |
---|
| 740 | avmv(ji,jj,jk) = rc_diff * sm * tmask(ji,jj,jk) |
---|
| 741 | END DO |
---|
[2048] | 742 | END DO |
---|
| 743 | END DO |
---|
[2397] | 744 | ! |
---|
[2048] | 745 | CASE ( 2, 3 ) ! Canuto stability functions |
---|
[2397] | 746 | DO jk = 2, jpkm1 |
---|
| 747 | DO jj = 2, jpjm1 |
---|
| 748 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 749 | ! zcof = l²/q² |
---|
| 750 | zcof = mxlb(ji,jj,jk)*mxlb(ji,jj,jk) / ( 2._wp * eb(ji,jj,jk) ) |
---|
| 751 | ! Gh = -N²l²/q² |
---|
| 752 | gh = - rn2(ji,jj,jk) * zcof |
---|
| 753 | gh = MIN( gh, rgh0 ) |
---|
| 754 | gh = MAX( gh, rghmin ) |
---|
| 755 | gh = gh * rf6 |
---|
| 756 | ! Gm = M²l²/q² Shear number |
---|
| 757 | shr = shear(ji,jj,jk) / MAX( avm(ji,jj,jk), rsmall ) |
---|
| 758 | gm = MAX( shr * zcof , 1.e-10 ) |
---|
| 759 | gm = gm * rf6 |
---|
| 760 | gm = MIN ( (rd0 - rd1*gh + rd3*gh*gh) / (rd2-rd4*gh) , gm ) |
---|
| 761 | ! Stability functions from Canuto |
---|
| 762 | rcff = rd0 - rd1*gh +rd2*gm + rd3*gh*gh - rd4*gh*gm + rd5*gm*gm |
---|
| 763 | sm = (rs0 - rs1*gh + rs2*gm) / rcff |
---|
| 764 | sh = (rs4 - rs5*gh + rs6*gm) / rcff |
---|
| 765 | ! |
---|
| 766 | ! Store stability function in avmu and avmv |
---|
| 767 | avmu(ji,jj,jk) = rc_diff * sh * tmask(ji,jj,jk) |
---|
| 768 | avmv(ji,jj,jk) = rc_diff * sm * tmask(ji,jj,jk) |
---|
| 769 | END DO |
---|
[2048] | 770 | END DO |
---|
| 771 | END DO |
---|
[2397] | 772 | ! |
---|
[2048] | 773 | END SELECT |
---|
| 774 | |
---|
| 775 | ! Boundary conditions on stability functions for momentum (Neumann): |
---|
| 776 | ! Lines below are useless if GOTM style Dirichlet conditions are used |
---|
[5109] | 777 | |
---|
| 778 | avmv(:,:,1) = avmv(:,:,2) |
---|
| 779 | |
---|
[2048] | 780 | DO jj = 2, jpjm1 |
---|
| 781 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[5109] | 782 | avmv(ji,jj,mbkt(ji,jj)+1) = avmv(ji,jj,mbkt(ji,jj)) |
---|
[2048] | 783 | END DO |
---|
| 784 | END DO |
---|
| 785 | |
---|
| 786 | ! Compute diffusivities/viscosities |
---|
| 787 | ! The computation below could be restrained to jk=2 to jpkm1 if GOTM style Dirichlet conditions are used |
---|
| 788 | DO jk = 1, jpk |
---|
| 789 | DO jj = 2, jpjm1 |
---|
| 790 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[2397] | 791 | zsqen = SQRT( 2._wp * en(ji,jj,jk) ) * mxln(ji,jj,jk) |
---|
| 792 | zav = zsqen * avmu(ji,jj,jk) |
---|
| 793 | avt(ji,jj,jk) = MAX( zav, avtb(jk) )*tmask(ji,jj,jk) ! apply mask for zdfmxl routine |
---|
| 794 | zav = zsqen * avmv(ji,jj,jk) |
---|
| 795 | avm(ji,jj,jk) = MAX( zav, avmb(jk) ) ! Note that avm is not masked at the surface and the bottom |
---|
[2048] | 796 | END DO |
---|
| 797 | END DO |
---|
| 798 | END DO |
---|
| 799 | ! |
---|
| 800 | ! Lateral boundary conditions (sign unchanged) |
---|
[2397] | 801 | avt(:,:,1) = 0._wp |
---|
[2048] | 802 | CALL lbc_lnk( avm, 'W', 1. ) ; CALL lbc_lnk( avt, 'W', 1. ) |
---|
| 803 | |
---|
| 804 | DO jk = 2, jpkm1 !* vertical eddy viscosity at u- and v-points |
---|
| 805 | DO jj = 2, jpjm1 |
---|
| 806 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[2397] | 807 | avmu(ji,jj,jk) = 0.5 * ( avm(ji,jj,jk) + avm(ji+1,jj ,jk) ) * umask(ji,jj,jk) |
---|
| 808 | avmv(ji,jj,jk) = 0.5 * ( avm(ji,jj,jk) + avm(ji ,jj+1,jk) ) * vmask(ji,jj,jk) |
---|
[2048] | 809 | END DO |
---|
| 810 | END DO |
---|
| 811 | END DO |
---|
[2397] | 812 | avmu(:,:,1) = 0._wp ; avmv(:,:,1) = 0._wp ! set surface to zero |
---|
| 813 | CALL lbc_lnk( avmu, 'U', 1. ) ; CALL lbc_lnk( avmv, 'V', 1. ) ! Lateral boundary conditions |
---|
[2048] | 814 | |
---|
| 815 | IF(ln_ctl) THEN |
---|
| 816 | CALL prt_ctl( tab3d_1=en , clinfo1=' gls - e: ', tab3d_2=avt, clinfo2=' t: ', ovlap=1, kdim=jpk) |
---|
| 817 | CALL prt_ctl( tab3d_1=avmu, clinfo1=' gls - u: ', mask1=umask, & |
---|
| 818 | & tab3d_2=avmv, clinfo2= ' v: ', mask2=vmask, ovlap=1, kdim=jpk ) |
---|
| 819 | ENDIF |
---|
| 820 | ! |
---|
[3798] | 821 | avt_k (:,:,:) = avt (:,:,:) |
---|
| 822 | avm_k (:,:,:) = avm (:,:,:) |
---|
| 823 | avmu_k(:,:,:) = avmu(:,:,:) |
---|
| 824 | avmv_k(:,:,:) = avmv(:,:,:) |
---|
| 825 | ! |
---|
[5836] | 826 | CALL wrk_dealloc( jpi,jpj, zdep, zkar, zflxs, zhsro ) |
---|
| 827 | CALL wrk_dealloc( jpi,jpj,jpk, eb, mxlb, shear, eps, zwall_psi, z_elem_a, z_elem_b, z_elem_c, psi ) |
---|
[2715] | 828 | ! |
---|
[3294] | 829 | IF( nn_timing == 1 ) CALL timing_stop('zdf_gls') |
---|
| 830 | ! |
---|
| 831 | ! |
---|
[2048] | 832 | END SUBROUTINE zdf_gls |
---|
| 833 | |
---|
[2329] | 834 | |
---|
[2048] | 835 | SUBROUTINE zdf_gls_init |
---|
| 836 | !!---------------------------------------------------------------------- |
---|
| 837 | !! *** ROUTINE zdf_gls_init *** |
---|
| 838 | !! |
---|
| 839 | !! ** Purpose : Initialization of the vertical eddy diffivity and |
---|
| 840 | !! viscosity when using a gls turbulent closure scheme |
---|
| 841 | !! |
---|
| 842 | !! ** Method : Read the namzdf_gls namelist and check the parameters |
---|
| 843 | !! called at the first timestep (nit000) |
---|
| 844 | !! |
---|
| 845 | !! ** input : Namlist namzdf_gls |
---|
| 846 | !! |
---|
| 847 | !! ** Action : Increase by 1 the nstop flag is setting problem encounter |
---|
| 848 | !! |
---|
| 849 | !!---------------------------------------------------------------------- |
---|
[2397] | 850 | USE dynzdf_exp |
---|
| 851 | USE trazdf_exp |
---|
| 852 | ! |
---|
[2329] | 853 | INTEGER :: jk ! dummy loop indices |
---|
[4147] | 854 | INTEGER :: ios ! Local integer output status for namelist read |
---|
[2329] | 855 | REAL(wp):: zcr ! local scalar |
---|
[2048] | 856 | !! |
---|
| 857 | NAMELIST/namzdf_gls/rn_emin, rn_epsmin, ln_length_lim, & |
---|
[5109] | 858 | & rn_clim_galp, ln_sigpsi, rn_hsro, & |
---|
| 859 | & rn_crban, rn_charn, rn_frac_hs, & |
---|
| 860 | & nn_bc_surf, nn_bc_bot, nn_z0_met, & |
---|
[2048] | 861 | & nn_stab_func, nn_clos |
---|
| 862 | !!---------------------------------------------------------- |
---|
[3294] | 863 | ! |
---|
| 864 | IF( nn_timing == 1 ) CALL timing_start('zdf_gls_init') |
---|
| 865 | ! |
---|
[4147] | 866 | REWIND( numnam_ref ) ! Namelist namzdf_gls in reference namelist : Vertical eddy diffivity and viscosity using gls turbulent closure scheme |
---|
| 867 | READ ( numnam_ref, namzdf_gls, IOSTAT = ios, ERR = 901) |
---|
| 868 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_gls in reference namelist', lwp ) |
---|
[2048] | 869 | |
---|
[4147] | 870 | REWIND( numnam_cfg ) ! Namelist namzdf_gls in configuration namelist : Vertical eddy diffivity and viscosity using gls turbulent closure scheme |
---|
| 871 | READ ( numnam_cfg, namzdf_gls, IOSTAT = ios, ERR = 902 ) |
---|
| 872 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_gls in configuration namelist', lwp ) |
---|
[4624] | 873 | IF(lwm) WRITE ( numond, namzdf_gls ) |
---|
[4147] | 874 | |
---|
[2397] | 875 | IF(lwp) THEN !* Control print |
---|
[2048] | 876 | WRITE(numout,*) |
---|
| 877 | WRITE(numout,*) 'zdf_gls_init : gls turbulent closure scheme' |
---|
| 878 | WRITE(numout,*) '~~~~~~~~~~~~' |
---|
[2397] | 879 | WRITE(numout,*) ' Namelist namzdf_gls : set gls mixing parameters' |
---|
[5109] | 880 | WRITE(numout,*) ' minimum value of en rn_emin = ', rn_emin |
---|
| 881 | WRITE(numout,*) ' minimum value of eps rn_epsmin = ', rn_epsmin |
---|
| 882 | WRITE(numout,*) ' Limit dissipation rate under stable stratif. ln_length_lim = ', ln_length_lim |
---|
| 883 | WRITE(numout,*) ' Galperin limit (Standard: 0.53, Holt: 0.26) rn_clim_galp = ', rn_clim_galp |
---|
| 884 | WRITE(numout,*) ' TKE Surface boundary condition nn_bc_surf = ', nn_bc_surf |
---|
| 885 | WRITE(numout,*) ' TKE Bottom boundary condition nn_bc_bot = ', nn_bc_bot |
---|
| 886 | WRITE(numout,*) ' Modify psi Schmidt number (wb case) ln_sigpsi = ', ln_sigpsi |
---|
[2397] | 887 | WRITE(numout,*) ' Craig and Banner coefficient rn_crban = ', rn_crban |
---|
| 888 | WRITE(numout,*) ' Charnock coefficient rn_charn = ', rn_charn |
---|
[5109] | 889 | WRITE(numout,*) ' Surface roughness formula nn_z0_met = ', nn_z0_met |
---|
| 890 | WRITE(numout,*) ' Wave height frac. (used if nn_z0_met=2) rn_frac_hs = ', rn_frac_hs |
---|
[2397] | 891 | WRITE(numout,*) ' Stability functions nn_stab_func = ', nn_stab_func |
---|
| 892 | WRITE(numout,*) ' Type of closure nn_clos = ', nn_clos |
---|
[5109] | 893 | WRITE(numout,*) ' Surface roughness (m) rn_hsro = ', rn_hsro |
---|
| 894 | WRITE(numout,*) ' Bottom roughness (m) (nambfr namelist) rn_bfrz0 = ', rn_bfrz0 |
---|
[2048] | 895 | ENDIF |
---|
| 896 | |
---|
[2715] | 897 | ! !* allocate gls arrays |
---|
| 898 | IF( zdf_gls_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'zdf_gls_init : unable to allocate arrays' ) |
---|
| 899 | |
---|
[2397] | 900 | ! !* Check of some namelist values |
---|
[7646] | 901 | IF( nn_bc_surf < 0 .OR. nn_bc_surf > 1 ) CALL ctl_stop( 'zdf_gls_init: bad flag: nn_bc_surf is 0 or 1' ) |
---|
| 902 | IF( nn_bc_surf < 0 .OR. nn_bc_surf > 1 ) CALL ctl_stop( 'zdf_gls_init: bad flag: nn_bc_surf is 0 or 1' ) |
---|
| 903 | IF( nn_z0_met < 0 .OR. nn_z0_met > 3 ) CALL ctl_stop( 'zdf_gls_init: bad flag: nn_z0_met is 0, 1, 2 or 3' ) |
---|
| 904 | IF( nn_z0_met == 3 .AND. .NOT.ln_wave ) CALL ctl_stop( 'zdf_gls_init: nn_z0_met=3 requires ln_wave=T' ) |
---|
| 905 | IF( nn_stab_func < 0 .OR. nn_stab_func > 3 ) CALL ctl_stop( 'zdf_gls_init: bad flag: nn_stab_func is 0, 1, 2 and 3' ) |
---|
| 906 | IF( nn_clos < 0 .OR. nn_clos > 3 ) CALL ctl_stop( 'zdf_gls_init: bad flag: nn_clos is 0, 1, 2 or 3' ) |
---|
[2048] | 907 | |
---|
[2715] | 908 | SELECT CASE ( nn_clos ) !* set the parameters for the chosen closure |
---|
[2048] | 909 | ! |
---|
[2715] | 910 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
[2397] | 911 | ! |
---|
| 912 | IF(lwp) WRITE(numout,*) 'The choosen closure is k-kl closed to the classical Mellor-Yamada' |
---|
| 913 | rpp = 0._wp |
---|
| 914 | rmm = 1._wp |
---|
| 915 | rnn = 1._wp |
---|
| 916 | rsc_tke = 1.96_wp |
---|
| 917 | rsc_psi = 1.96_wp |
---|
| 918 | rpsi1 = 0.9_wp |
---|
| 919 | rpsi3p = 1._wp |
---|
| 920 | rpsi2 = 0.5_wp |
---|
| 921 | ! |
---|
[2048] | 922 | SELECT CASE ( nn_stab_func ) |
---|
[2397] | 923 | CASE( 0, 1 ) ; rpsi3m = 2.53_wp ! G88 or KC stability functions |
---|
[5109] | 924 | CASE( 2 ) ; rpsi3m = 2.62_wp ! Canuto A stability functions |
---|
[2397] | 925 | CASE( 3 ) ; rpsi3m = 2.38 ! Canuto B stability functions (caution : constant not identified) |
---|
| 926 | END SELECT |
---|
[2048] | 927 | ! |
---|
[2715] | 928 | CASE( 1 ) ! k-eps |
---|
[2397] | 929 | ! |
---|
| 930 | IF(lwp) WRITE(numout,*) 'The choosen closure is k-eps' |
---|
| 931 | rpp = 3._wp |
---|
| 932 | rmm = 1.5_wp |
---|
| 933 | rnn = -1._wp |
---|
| 934 | rsc_tke = 1._wp |
---|
[5109] | 935 | rsc_psi = 1.2_wp ! Schmidt number for psi |
---|
[2397] | 936 | rpsi1 = 1.44_wp |
---|
| 937 | rpsi3p = 1._wp |
---|
| 938 | rpsi2 = 1.92_wp |
---|
| 939 | ! |
---|
| 940 | SELECT CASE ( nn_stab_func ) |
---|
| 941 | CASE( 0, 1 ) ; rpsi3m = -0.52_wp ! G88 or KC stability functions |
---|
| 942 | CASE( 2 ) ; rpsi3m = -0.629_wp ! Canuto A stability functions |
---|
| 943 | CASE( 3 ) ; rpsi3m = -0.566 ! Canuto B stability functions |
---|
[2048] | 944 | END SELECT |
---|
[2397] | 945 | ! |
---|
[2715] | 946 | CASE( 2 ) ! k-omega |
---|
[2397] | 947 | ! |
---|
| 948 | IF(lwp) WRITE(numout,*) 'The choosen closure is k-omega' |
---|
| 949 | rpp = -1._wp |
---|
| 950 | rmm = 0.5_wp |
---|
| 951 | rnn = -1._wp |
---|
| 952 | rsc_tke = 2._wp |
---|
| 953 | rsc_psi = 2._wp |
---|
| 954 | rpsi1 = 0.555_wp |
---|
| 955 | rpsi3p = 1._wp |
---|
| 956 | rpsi2 = 0.833_wp |
---|
| 957 | ! |
---|
| 958 | SELECT CASE ( nn_stab_func ) |
---|
| 959 | CASE( 0, 1 ) ; rpsi3m = -0.58_wp ! G88 or KC stability functions |
---|
| 960 | CASE( 2 ) ; rpsi3m = -0.64_wp ! Canuto A stability functions |
---|
| 961 | CASE( 3 ) ; rpsi3m = -0.64_wp ! Canuto B stability functions caution : constant not identified) |
---|
| 962 | END SELECT |
---|
| 963 | ! |
---|
[2715] | 964 | CASE( 3 ) ! generic |
---|
[2397] | 965 | ! |
---|
| 966 | IF(lwp) WRITE(numout,*) 'The choosen closure is generic' |
---|
| 967 | rpp = 2._wp |
---|
| 968 | rmm = 1._wp |
---|
| 969 | rnn = -0.67_wp |
---|
| 970 | rsc_tke = 0.8_wp |
---|
| 971 | rsc_psi = 1.07_wp |
---|
| 972 | rpsi1 = 1._wp |
---|
| 973 | rpsi3p = 1._wp |
---|
| 974 | rpsi2 = 1.22_wp |
---|
| 975 | ! |
---|
| 976 | SELECT CASE ( nn_stab_func ) |
---|
| 977 | CASE( 0, 1 ) ; rpsi3m = 0.1_wp ! G88 or KC stability functions |
---|
| 978 | CASE( 2 ) ; rpsi3m = 0.05_wp ! Canuto A stability functions |
---|
| 979 | CASE( 3 ) ; rpsi3m = 0.05_wp ! Canuto B stability functions caution : constant not identified) |
---|
| 980 | END SELECT |
---|
| 981 | ! |
---|
[2048] | 982 | END SELECT |
---|
| 983 | |
---|
| 984 | ! |
---|
[2715] | 985 | SELECT CASE ( nn_stab_func ) !* set the parameters of the stability functions |
---|
[2048] | 986 | ! |
---|
[2715] | 987 | CASE ( 0 ) ! Galperin stability functions |
---|
[2397] | 988 | ! |
---|
| 989 | IF(lwp) WRITE(numout,*) 'Stability functions from Galperin' |
---|
| 990 | rc2 = 0._wp |
---|
| 991 | rc3 = 0._wp |
---|
| 992 | rc_diff = 1._wp |
---|
| 993 | rc0 = 0.5544_wp |
---|
| 994 | rcm_sf = 0.9884_wp |
---|
| 995 | rghmin = -0.28_wp |
---|
| 996 | rgh0 = 0.0233_wp |
---|
| 997 | rghcri = 0.02_wp |
---|
| 998 | ! |
---|
[2715] | 999 | CASE ( 1 ) ! Kantha-Clayson stability functions |
---|
[2397] | 1000 | ! |
---|
| 1001 | IF(lwp) WRITE(numout,*) 'Stability functions from Kantha-Clayson' |
---|
| 1002 | rc2 = 0.7_wp |
---|
| 1003 | rc3 = 0.2_wp |
---|
| 1004 | rc_diff = 1._wp |
---|
| 1005 | rc0 = 0.5544_wp |
---|
| 1006 | rcm_sf = 0.9884_wp |
---|
| 1007 | rghmin = -0.28_wp |
---|
| 1008 | rgh0 = 0.0233_wp |
---|
| 1009 | rghcri = 0.02_wp |
---|
| 1010 | ! |
---|
[2715] | 1011 | CASE ( 2 ) ! Canuto A stability functions |
---|
[2397] | 1012 | ! |
---|
| 1013 | IF(lwp) WRITE(numout,*) 'Stability functions from Canuto A' |
---|
| 1014 | rs0 = 1.5_wp * rl1 * rl5*rl5 |
---|
| 1015 | rs1 = -rl4*(rl6+rl7) + 2._wp*rl4*rl5*(rl1-(1._wp/3._wp)*rl2-rl3) + 1.5_wp*rl1*rl5*rl8 |
---|
| 1016 | rs2 = -(3._wp/8._wp) * rl1*(rl6*rl6-rl7*rl7) |
---|
| 1017 | rs4 = 2._wp * rl5 |
---|
| 1018 | rs5 = 2._wp * rl4 |
---|
| 1019 | rs6 = (2._wp/3._wp) * rl5 * ( 3._wp*rl3*rl3 - rl2*rl2 ) - 0.5_wp * rl5*rl1 * (3._wp*rl3-rl2) & |
---|
| 1020 | & + 0.75_wp * rl1 * ( rl6 - rl7 ) |
---|
| 1021 | rd0 = 3._wp * rl5*rl5 |
---|
| 1022 | rd1 = rl5 * ( 7._wp*rl4 + 3._wp*rl8 ) |
---|
| 1023 | rd2 = rl5*rl5 * ( 3._wp*rl3*rl3 - rl2*rl2 ) - 0.75_wp*(rl6*rl6 - rl7*rl7 ) |
---|
| 1024 | rd3 = rl4 * ( 4._wp*rl4 + 3._wp*rl8) |
---|
| 1025 | rd4 = rl4 * ( rl2 * rl6 - 3._wp*rl3*rl7 - rl5*(rl2*rl2 - rl3*rl3 ) ) + rl5*rl8 * ( 3._wp*rl3*rl3 - rl2*rl2 ) |
---|
| 1026 | rd5 = 0.25_wp * ( rl2*rl2 - 3._wp *rl3*rl3 ) * ( rl6*rl6 - rl7*rl7 ) |
---|
| 1027 | rc0 = 0.5268_wp |
---|
| 1028 | rf6 = 8._wp / (rc0**6._wp) |
---|
| 1029 | rc_diff = SQRT(2._wp) / (rc0**3._wp) |
---|
| 1030 | rcm_sf = 0.7310_wp |
---|
| 1031 | rghmin = -0.28_wp |
---|
| 1032 | rgh0 = 0.0329_wp |
---|
| 1033 | rghcri = 0.03_wp |
---|
| 1034 | ! |
---|
[2715] | 1035 | CASE ( 3 ) ! Canuto B stability functions |
---|
[2397] | 1036 | ! |
---|
| 1037 | IF(lwp) WRITE(numout,*) 'Stability functions from Canuto B' |
---|
| 1038 | rs0 = 1.5_wp * rm1 * rm5*rm5 |
---|
| 1039 | rs1 = -rm4 * (rm6+rm7) + 2._wp * rm4*rm5*(rm1-(1._wp/3._wp)*rm2-rm3) + 1.5_wp * rm1*rm5*rm8 |
---|
| 1040 | rs2 = -(3._wp/8._wp) * rm1 * (rm6*rm6-rm7*rm7 ) |
---|
| 1041 | rs4 = 2._wp * rm5 |
---|
| 1042 | rs5 = 2._wp * rm4 |
---|
| 1043 | rs6 = (2._wp/3._wp) * rm5 * (3._wp*rm3*rm3-rm2*rm2) - 0.5_wp * rm5*rm1*(3._wp*rm3-rm2) + 0.75_wp * rm1*(rm6-rm7) |
---|
| 1044 | rd0 = 3._wp * rm5*rm5 |
---|
| 1045 | rd1 = rm5 * (7._wp*rm4 + 3._wp*rm8) |
---|
| 1046 | rd2 = rm5*rm5 * (3._wp*rm3*rm3 - rm2*rm2) - 0.75_wp * (rm6*rm6 - rm7*rm7) |
---|
| 1047 | rd3 = rm4 * ( 4._wp*rm4 + 3._wp*rm8 ) |
---|
| 1048 | rd4 = rm4 * ( rm2*rm6 -3._wp*rm3*rm7 - rm5*(rm2*rm2 - rm3*rm3) ) + rm5 * rm8 * ( 3._wp*rm3*rm3 - rm2*rm2 ) |
---|
| 1049 | rd5 = 0.25_wp * ( rm2*rm2 - 3._wp*rm3*rm3 ) * ( rm6*rm6 - rm7*rm7 ) |
---|
| 1050 | rc0 = 0.5268_wp !! rc0 = 0.5540_wp (Warner ...) to verify ! |
---|
| 1051 | rf6 = 8._wp / ( rc0**6._wp ) |
---|
| 1052 | rc_diff = SQRT(2._wp)/(rc0**3.) |
---|
| 1053 | rcm_sf = 0.7470_wp |
---|
| 1054 | rghmin = -0.28_wp |
---|
| 1055 | rgh0 = 0.0444_wp |
---|
| 1056 | rghcri = 0.0414_wp |
---|
| 1057 | ! |
---|
[2048] | 1058 | END SELECT |
---|
| 1059 | |
---|
[2715] | 1060 | ! !* Set Schmidt number for psi diffusion in the wave breaking case |
---|
| 1061 | ! ! See Eq. (13) of Carniel et al, OM, 30, 225-239, 2009 |
---|
| 1062 | ! ! or Eq. (17) of Burchard, JPO, 31, 3133-3145, 2001 |
---|
[5109] | 1063 | IF( ln_sigpsi ) THEN |
---|
| 1064 | ra_sf = -1.5 ! Set kinetic energy slope, then deduce rsc_psi and rl_sf |
---|
| 1065 | ! Verification: retrieve Burchard (2001) results by uncomenting the line below: |
---|
| 1066 | ! Note that the results depend on the value of rn_cm_sf which is constant (=rc0) in his work |
---|
| 1067 | ! ra_sf = -SQRT(2./3.*rc0**3./rn_cm_sf*rn_sc_tke)/vkarmn |
---|
| 1068 | rsc_psi0 = rsc_tke/(24.*rpsi2)*(-1.+(4.*rnn + ra_sf*(1.+4.*rmm))**2./(ra_sf**2.)) |
---|
[2048] | 1069 | ELSE |
---|
[2299] | 1070 | rsc_psi0 = rsc_psi |
---|
[2048] | 1071 | ENDIF |
---|
| 1072 | |
---|
[2715] | 1073 | ! !* Shear free turbulence parameters |
---|
[2048] | 1074 | ! |
---|
[5109] | 1075 | ra_sf = -4._wp*rnn*SQRT(rsc_tke) / ( (1._wp+4._wp*rmm)*SQRT(rsc_tke) & |
---|
| 1076 | & - SQRT(rsc_tke + 24._wp*rsc_psi0*rpsi2 ) ) |
---|
[2048] | 1077 | |
---|
[5109] | 1078 | IF ( rn_crban==0._wp ) THEN |
---|
| 1079 | rl_sf = vkarmn |
---|
| 1080 | ELSE |
---|
| 1081 | rl_sf = rc0 * SQRT(rc0/rcm_sf) * SQRT( ( (1._wp + 4._wp*rmm + 8._wp*rmm**2_wp)*rsc_tke & |
---|
| 1082 | & + 12._wp * rsc_psi0*rpsi2 - (1._wp + 4._wp*rmm) & |
---|
| 1083 | & *SQRT(rsc_tke*(rsc_tke & |
---|
| 1084 | & + 24._wp*rsc_psi0*rpsi2)) ) & |
---|
| 1085 | & /(12._wp*rnn**2.) & |
---|
| 1086 | & ) |
---|
| 1087 | ENDIF |
---|
| 1088 | |
---|
[2048] | 1089 | ! |
---|
[2715] | 1090 | IF(lwp) THEN !* Control print |
---|
[2048] | 1091 | WRITE(numout,*) |
---|
| 1092 | WRITE(numout,*) 'Limit values' |
---|
| 1093 | WRITE(numout,*) '~~~~~~~~~~~~' |
---|
[2299] | 1094 | WRITE(numout,*) 'Parameter m = ',rmm |
---|
| 1095 | WRITE(numout,*) 'Parameter n = ',rnn |
---|
| 1096 | WRITE(numout,*) 'Parameter p = ',rpp |
---|
| 1097 | WRITE(numout,*) 'rpsi1 = ',rpsi1 |
---|
| 1098 | WRITE(numout,*) 'rpsi2 = ',rpsi2 |
---|
| 1099 | WRITE(numout,*) 'rpsi3m = ',rpsi3m |
---|
| 1100 | WRITE(numout,*) 'rpsi3p = ',rpsi3p |
---|
| 1101 | WRITE(numout,*) 'rsc_tke = ',rsc_tke |
---|
| 1102 | WRITE(numout,*) 'rsc_psi = ',rsc_psi |
---|
| 1103 | WRITE(numout,*) 'rsc_psi0 = ',rsc_psi0 |
---|
| 1104 | WRITE(numout,*) 'rc0 = ',rc0 |
---|
[2048] | 1105 | WRITE(numout,*) |
---|
| 1106 | WRITE(numout,*) 'Shear free turbulence parameters:' |
---|
[2299] | 1107 | WRITE(numout,*) 'rcm_sf = ',rcm_sf |
---|
| 1108 | WRITE(numout,*) 'ra_sf = ',ra_sf |
---|
| 1109 | WRITE(numout,*) 'rl_sf = ',rl_sf |
---|
[2048] | 1110 | WRITE(numout,*) |
---|
| 1111 | ENDIF |
---|
| 1112 | |
---|
[2715] | 1113 | ! !* Constants initialization |
---|
[2397] | 1114 | rc02 = rc0 * rc0 ; rc02r = 1. / rc02 |
---|
| 1115 | rc03 = rc02 * rc0 |
---|
| 1116 | rc04 = rc03 * rc0 |
---|
[5109] | 1117 | rsbc_tke1 = -3._wp/2._wp*rn_crban*ra_sf*rl_sf ! Dirichlet + Wave breaking |
---|
| 1118 | rsbc_tke2 = rdt * rn_crban / rl_sf ! Neumann + Wave breaking |
---|
| 1119 | zcr = MAX(rsmall, rsbc_tke1**(1./(-ra_sf*3._wp/2._wp))-1._wp ) |
---|
| 1120 | rtrans = 0.2_wp / zcr ! Ad. inverse transition length between log and wave layer |
---|
| 1121 | rsbc_zs1 = rn_charn/grav ! Charnock formula for surface roughness |
---|
| 1122 | rsbc_zs2 = rn_frac_hs / 0.85_wp / grav * 665._wp ! Rascle formula for surface roughness |
---|
| 1123 | rsbc_psi1 = -0.5_wp * rdt * rc0**(rpp-2._wp*rmm) / rsc_psi |
---|
| 1124 | rsbc_psi2 = -0.5_wp * rdt * rc0**rpp * rnn * vkarmn**rnn / rsc_psi ! Neumann + NO Wave breaking |
---|
[2048] | 1125 | |
---|
[5109] | 1126 | rfact_tke = -0.5_wp / rsc_tke * rdt ! Cst used for the Diffusion term of tke |
---|
| 1127 | rfact_psi = -0.5_wp / rsc_psi * rdt ! Cst used for the Diffusion term of tke |
---|
| 1128 | |
---|
[2397] | 1129 | ! !* Wall proximity function |
---|
[2048] | 1130 | zwall (:,:,:) = 1._wp * tmask(:,:,:) |
---|
| 1131 | |
---|
[2397] | 1132 | ! !* set vertical eddy coef. to the background value |
---|
[2048] | 1133 | DO jk = 1, jpk |
---|
| 1134 | avt (:,:,jk) = avtb(jk) * tmask(:,:,jk) |
---|
| 1135 | avm (:,:,jk) = avmb(jk) * tmask(:,:,jk) |
---|
| 1136 | avmu(:,:,jk) = avmb(jk) * umask(:,:,jk) |
---|
| 1137 | avmv(:,:,jk) = avmb(jk) * vmask(:,:,jk) |
---|
| 1138 | END DO |
---|
[2715] | 1139 | ! |
---|
| 1140 | CALL gls_rst( nit000, 'READ' ) !* read or initialize all required files |
---|
[2048] | 1141 | ! |
---|
[3294] | 1142 | IF( nn_timing == 1 ) CALL timing_stop('zdf_gls_init') |
---|
| 1143 | ! |
---|
[2048] | 1144 | END SUBROUTINE zdf_gls_init |
---|
| 1145 | |
---|
[2329] | 1146 | |
---|
[2048] | 1147 | SUBROUTINE gls_rst( kt, cdrw ) |
---|
[2452] | 1148 | !!--------------------------------------------------------------------- |
---|
| 1149 | !! *** ROUTINE ts_rst *** |
---|
| 1150 | !! |
---|
| 1151 | !! ** Purpose : Read or write TKE file (en) in restart file |
---|
| 1152 | !! |
---|
| 1153 | !! ** Method : use of IOM library |
---|
| 1154 | !! if the restart does not contain TKE, en is either |
---|
| 1155 | !! set to rn_emin or recomputed (nn_igls/=0) |
---|
| 1156 | !!---------------------------------------------------------------------- |
---|
| 1157 | INTEGER , INTENT(in) :: kt ! ocean time-step |
---|
| 1158 | CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag |
---|
| 1159 | ! |
---|
| 1160 | INTEGER :: jit, jk ! dummy loop indices |
---|
[3294] | 1161 | INTEGER :: id1, id2, id3, id4, id5, id6 |
---|
[2452] | 1162 | INTEGER :: ji, jj, ikbu, ikbv |
---|
| 1163 | REAL(wp):: cbx, cby |
---|
| 1164 | !!---------------------------------------------------------------------- |
---|
| 1165 | ! |
---|
| 1166 | IF( TRIM(cdrw) == 'READ' ) THEN ! Read/initialise |
---|
| 1167 | ! ! --------------- |
---|
| 1168 | IF( ln_rstart ) THEN !* Read the restart file |
---|
| 1169 | id1 = iom_varid( numror, 'en' , ldstop = .FALSE. ) |
---|
| 1170 | id2 = iom_varid( numror, 'avt' , ldstop = .FALSE. ) |
---|
| 1171 | id3 = iom_varid( numror, 'avm' , ldstop = .FALSE. ) |
---|
| 1172 | id4 = iom_varid( numror, 'avmu' , ldstop = .FALSE. ) |
---|
| 1173 | id5 = iom_varid( numror, 'avmv' , ldstop = .FALSE. ) |
---|
| 1174 | id6 = iom_varid( numror, 'mxln' , ldstop = .FALSE. ) |
---|
| 1175 | ! |
---|
[3294] | 1176 | IF( MIN( id1, id2, id3, id4, id5, id6 ) > 0 ) THEN ! all required arrays exist |
---|
[2452] | 1177 | CALL iom_get( numror, jpdom_autoglo, 'en' , en ) |
---|
| 1178 | CALL iom_get( numror, jpdom_autoglo, 'avt' , avt ) |
---|
| 1179 | CALL iom_get( numror, jpdom_autoglo, 'avm' , avm ) |
---|
| 1180 | CALL iom_get( numror, jpdom_autoglo, 'avmu' , avmu ) |
---|
| 1181 | CALL iom_get( numror, jpdom_autoglo, 'avmv' , avmv ) |
---|
| 1182 | CALL iom_get( numror, jpdom_autoglo, 'mxln' , mxln ) |
---|
| 1183 | ELSE |
---|
| 1184 | IF(lwp) WRITE(numout,*) ' ===>>>> : previous run without gls scheme, en and mxln computed by iterative loop' |
---|
| 1185 | en (:,:,:) = rn_emin |
---|
[5109] | 1186 | mxln(:,:,:) = 0.05 |
---|
[4839] | 1187 | avt_k (:,:,:) = avt (:,:,:) |
---|
| 1188 | avm_k (:,:,:) = avm (:,:,:) |
---|
| 1189 | avmu_k(:,:,:) = avmu(:,:,:) |
---|
| 1190 | avmv_k(:,:,:) = avmv(:,:,:) |
---|
[2452] | 1191 | DO jit = nit000 + 1, nit000 + 10 ; CALL zdf_gls( jit ) ; END DO |
---|
| 1192 | ENDIF |
---|
| 1193 | ELSE !* Start from rest |
---|
| 1194 | IF(lwp) WRITE(numout,*) ' ===>>>> : Initialisation of en and mxln by background values' |
---|
| 1195 | en (:,:,:) = rn_emin |
---|
[5109] | 1196 | mxln(:,:,:) = 0.05 |
---|
[2452] | 1197 | ENDIF |
---|
| 1198 | ! |
---|
| 1199 | ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN ! Create restart file |
---|
| 1200 | ! ! ------------------- |
---|
| 1201 | IF(lwp) WRITE(numout,*) '---- gls-rst ----' |
---|
[5109] | 1202 | CALL iom_rstput( kt, nitrst, numrow, 'en' , en ) |
---|
[3798] | 1203 | CALL iom_rstput( kt, nitrst, numrow, 'avt' , avt_k ) |
---|
| 1204 | CALL iom_rstput( kt, nitrst, numrow, 'avm' , avm_k ) |
---|
[5109] | 1205 | CALL iom_rstput( kt, nitrst, numrow, 'avmu' , avmu_k ) |
---|
[3798] | 1206 | CALL iom_rstput( kt, nitrst, numrow, 'avmv' , avmv_k ) |
---|
| 1207 | CALL iom_rstput( kt, nitrst, numrow, 'mxln' , mxln ) |
---|
[2452] | 1208 | ! |
---|
| 1209 | ENDIF |
---|
| 1210 | ! |
---|
[2048] | 1211 | END SUBROUTINE gls_rst |
---|
| 1212 | |
---|
| 1213 | #else |
---|
| 1214 | !!---------------------------------------------------------------------- |
---|
| 1215 | !! Dummy module : NO TKE scheme |
---|
| 1216 | !!---------------------------------------------------------------------- |
---|
| 1217 | LOGICAL, PUBLIC, PARAMETER :: lk_zdfgls = .FALSE. !: TKE flag |
---|
| 1218 | CONTAINS |
---|
[2409] | 1219 | SUBROUTINE zdf_gls_init ! Empty routine |
---|
| 1220 | WRITE(*,*) 'zdf_gls_init: You should not have seen this print! error?' |
---|
| 1221 | END SUBROUTINE zdf_gls_init |
---|
[2048] | 1222 | SUBROUTINE zdf_gls( kt ) ! Empty routine |
---|
| 1223 | WRITE(*,*) 'zdf_gls: You should not have seen this print! error?', kt |
---|
| 1224 | END SUBROUTINE zdf_gls |
---|
[2397] | 1225 | SUBROUTINE gls_rst( kt, cdrw ) ! Empty routine |
---|
[2264] | 1226 | INTEGER , INTENT(in) :: kt ! ocean time-step |
---|
| 1227 | CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag |
---|
[2397] | 1228 | WRITE(*,*) 'gls_rst: You should not have seen this print! error?', kt, cdrw |
---|
[2264] | 1229 | END SUBROUTINE gls_rst |
---|
[2048] | 1230 | #endif |
---|
| 1231 | |
---|
| 1232 | !!====================================================================== |
---|
| 1233 | END MODULE zdfgls |
---|
[2397] | 1234 | |
---|