[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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[9019] | 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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| 9 | !! 4.0 ! 2017-04 (G. Madec) remove CPP keys & avm at t-point only |
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| 10 | !! - ! 2017-05 (G. Madec) add top friction as boundary condition |
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[2048] | 11 | !!---------------------------------------------------------------------- |
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[9019] | 12 | |
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[2048] | 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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[9019] | 21 | USE zdfdrg , ONLY : r_z0_top , r_z0_bot ! top/bottom roughness |
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| 22 | USE zdfdrg , ONLY : rCdU_top , rCdU_bot ! top/bottom friction |
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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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[9019] | 26 | USE sbcwave , ONLY : hsw ! significant wave height |
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[7646] | 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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[2048] | 30 | USE prtctl ! Print control |
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| 31 | USE in_out_manager ! I/O manager |
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| 32 | USE iom ! I/O manager library |
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[9089] | 33 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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[2048] | 34 | |
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| 35 | IMPLICIT NONE |
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| 36 | PRIVATE |
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| 37 | |
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[9019] | 38 | PUBLIC zdf_gls ! called in zdfphy |
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| 39 | PUBLIC zdf_gls_init ! called in zdfphy |
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| 40 | PUBLIC gls_rst ! called in zdfphy |
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[2048] | 41 | |
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[2715] | 42 | ! |
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[9019] | 43 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: hmxl_n !: now mixing length |
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[2715] | 44 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: zwall !: wall function |
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[9019] | 45 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ustar2_surf !: Squared surface velocity scale at T-points |
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| 46 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ustar2_top !: Squared top velocity scale at T-points |
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| 47 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ustar2_bot !: Squared bottom velocity scale at T-points |
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[2048] | 48 | |
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[4147] | 49 | ! !! ** Namelist namzdf_gls ** |
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| 50 | LOGICAL :: ln_length_lim ! use limit on the dissipation rate under stable stratification (Galperin et al. 1988) |
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| 51 | LOGICAL :: ln_sigpsi ! Activate Burchard (2003) modification for k-eps closure & wave breaking mixing |
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[5109] | 52 | INTEGER :: nn_bc_surf ! surface boundary condition (=0/1) |
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| 53 | INTEGER :: nn_bc_bot ! bottom boundary condition (=0/1) |
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| 54 | INTEGER :: nn_z0_met ! Method for surface roughness computation |
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[4147] | 55 | INTEGER :: nn_stab_func ! stability functions G88, KC or Canuto (=0/1/2) |
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| 56 | INTEGER :: nn_clos ! closure 0/1/2/3 MY82/k-eps/k-w/gen |
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| 57 | REAL(wp) :: rn_clim_galp ! Holt 2008 value for k-eps: 0.267 |
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| 58 | REAL(wp) :: rn_epsmin ! minimum value of dissipation (m2/s3) |
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| 59 | REAL(wp) :: rn_emin ! minimum value of TKE (m2/s2) |
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| 60 | REAL(wp) :: rn_charn ! Charnock constant for surface breaking waves mixing : 1400. (standard) or 2.e5 (Stacey value) |
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| 61 | REAL(wp) :: rn_crban ! Craig and Banner constant for surface breaking waves mixing |
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[5109] | 62 | REAL(wp) :: rn_hsro ! Minimum surface roughness |
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| 63 | REAL(wp) :: rn_frac_hs ! Fraction of wave height as surface roughness (if nn_z0_met > 1) |
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[2048] | 64 | |
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[2397] | 65 | REAL(wp) :: rcm_sf = 0.73_wp ! Shear free turbulence parameters |
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| 66 | REAL(wp) :: ra_sf = -2.0_wp ! Must be negative -2 < ra_sf < -1 |
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| 67 | REAL(wp) :: rl_sf = 0.2_wp ! 0 <rl_sf<vkarmn |
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| 68 | REAL(wp) :: rghmin = -0.28_wp |
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| 69 | REAL(wp) :: rgh0 = 0.0329_wp |
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| 70 | REAL(wp) :: rghcri = 0.03_wp |
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[2299] | 71 | REAL(wp) :: ra1 = 0.92_wp |
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| 72 | REAL(wp) :: ra2 = 0.74_wp |
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| 73 | REAL(wp) :: rb1 = 16.60_wp |
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| 74 | REAL(wp) :: rb2 = 10.10_wp |
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| 75 | REAL(wp) :: re2 = 1.33_wp |
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| 76 | REAL(wp) :: rl1 = 0.107_wp |
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| 77 | REAL(wp) :: rl2 = 0.0032_wp |
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| 78 | REAL(wp) :: rl3 = 0.0864_wp |
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| 79 | REAL(wp) :: rl4 = 0.12_wp |
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| 80 | REAL(wp) :: rl5 = 11.9_wp |
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| 81 | REAL(wp) :: rl6 = 0.4_wp |
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| 82 | REAL(wp) :: rl7 = 0.0_wp |
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| 83 | REAL(wp) :: rl8 = 0.48_wp |
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| 84 | REAL(wp) :: rm1 = 0.127_wp |
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| 85 | REAL(wp) :: rm2 = 0.00336_wp |
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| 86 | REAL(wp) :: rm3 = 0.0906_wp |
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| 87 | REAL(wp) :: rm4 = 0.101_wp |
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| 88 | REAL(wp) :: rm5 = 11.2_wp |
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| 89 | REAL(wp) :: rm6 = 0.4_wp |
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| 90 | REAL(wp) :: rm7 = 0.0_wp |
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| 91 | REAL(wp) :: rm8 = 0.318_wp |
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[5109] | 92 | REAL(wp) :: rtrans = 0.1_wp |
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[2397] | 93 | REAL(wp) :: rc02, rc02r, rc03, rc04 ! coefficients deduced from above parameters |
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[5109] | 94 | REAL(wp) :: rsbc_tke1, rsbc_tke2, rfact_tke ! - - - - |
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| 95 | REAL(wp) :: rsbc_psi1, rsbc_psi2, rfact_psi ! - - - - |
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| 96 | REAL(wp) :: rsbc_zs1, rsbc_zs2 ! - - - - |
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[2397] | 97 | REAL(wp) :: rc0, rc2, rc3, rf6, rcff, rc_diff ! - - - - |
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| 98 | REAL(wp) :: rs0, rs1, rs2, rs4, rs5, rs6 ! - - - - |
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| 99 | REAL(wp) :: rd0, rd1, rd2, rd3, rd4, rd5 ! - - - - |
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| 100 | REAL(wp) :: rsc_tke, rsc_psi, rpsi1, rpsi2, rpsi3, rsc_psi0 ! - - - - |
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| 101 | REAL(wp) :: rpsi3m, rpsi3p, rpp, rmm, rnn ! - - - - |
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[9019] | 102 | ! |
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| 103 | REAL(wp) :: r2_3 = 2._wp/3._wp ! constant=2/3 |
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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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[9598] | 108 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[2715] | 109 | !! $Id$ |
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[10068] | 110 | !! Software governed by the CeCILL license (see ./LICENSE) |
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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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[9019] | 118 | ALLOCATE( hmxl_n(jpi,jpj,jpk) , ustar2_surf(jpi,jpj) , & |
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| 119 | & zwall (jpi,jpj,jpk) , ustar2_top (jpi,jpj) , ustar2_bot(jpi,jpj) , STAT= zdf_gls_alloc ) |
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[2715] | 120 | ! |
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[10425] | 121 | CALL mpp_sum ( 'zdfgls', zdf_gls_alloc ) |
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| 122 | IF( zdf_gls_alloc /= 0 ) CALL ctl_stop( 'STOP', 'zdf_gls_alloc: failed to allocate arrays' ) |
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[2715] | 123 | END FUNCTION zdf_gls_alloc |
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| 124 | |
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| 125 | |
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[11949] | 126 | SUBROUTINE zdf_gls( kt, Kbb, Kmm, p_sh2, p_avm, p_avt ) |
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[2048] | 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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[9019] | 133 | USE zdf_oce , ONLY : en, avtb, avmb ! ocean vertical physics |
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| 134 | !! |
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| 135 | INTEGER , INTENT(in ) :: kt ! ocean time step |
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[11949] | 136 | INTEGER , INTENT(in ) :: Kbb, Kmm ! ocean time level indices |
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[9019] | 137 | REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: p_sh2 ! shear production term |
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| 138 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: p_avm, p_avt ! momentum and tracer Kz (w-points) |
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| 139 | ! |
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| 140 | INTEGER :: ji, jj, jk ! dummy loop arguments |
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| 141 | INTEGER :: ibot, ibotm1 ! local integers |
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| 142 | INTEGER :: itop, itopp1 ! - - |
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| 143 | REAL(wp) :: zesh2, zsigpsi, zcoef, zex1 , zex2 ! local scalars |
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| 144 | REAL(wp) :: ztx2, zty2, zup, zdown, zcof, zdir ! - - |
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| 145 | REAL(wp) :: zratio, zrn2, zflxb, sh , z_en ! - - |
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[2397] | 146 | REAL(wp) :: prod, buoy, diss, zdiss, sm ! - - |
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[9019] | 147 | REAL(wp) :: gh, gm, shr, dif, zsqen, zavt, zavm ! - - |
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| 148 | REAL(wp) :: zmsku, zmskv ! - - |
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| 149 | REAL(wp), DIMENSION(jpi,jpj) :: zdep |
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| 150 | REAL(wp), DIMENSION(jpi,jpj) :: zkar |
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| 151 | REAL(wp), DIMENSION(jpi,jpj) :: zflxs ! Turbulence fluxed induced by internal waves |
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| 152 | REAL(wp), DIMENSION(jpi,jpj) :: zhsro ! Surface roughness (surface waves) |
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| 153 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: eb ! tke at time before |
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| 154 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: hmxl_b ! mixing length at time before |
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| 155 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: eps ! dissipation rate |
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| 156 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zwall_psi ! Wall function use in the wb case (ln_sigpsi) |
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| 157 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: psi ! psi at time now |
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| 158 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zd_lw, zd_up, zdiag ! lower, upper and diagonal of the matrix |
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| 159 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zstt, zstm ! stability function on tracer and momentum |
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[2048] | 160 | !!-------------------------------------------------------------------- |
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[3294] | 161 | ! |
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[2048] | 162 | ! Preliminary computing |
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| 163 | |
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[9019] | 164 | ustar2_surf(:,:) = 0._wp ; psi(:,:,:) = 0._wp |
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| 165 | ustar2_top (:,:) = 0._wp ; zwall_psi(:,:,:) = 0._wp |
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| 166 | ustar2_bot (:,:) = 0._wp |
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[2048] | 167 | |
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[9019] | 168 | ! Compute surface, top and bottom friction at T-points |
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[5109] | 169 | DO jj = 2, jpjm1 |
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| 170 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 171 | ! |
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| 172 | ! surface friction |
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[9019] | 173 | ustar2_surf(ji,jj) = r1_rau0 * taum(ji,jj) * tmask(ji,jj,1) |
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[5109] | 174 | ! |
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[9019] | 175 | !!gm Rq we may add here r_ke0(_top/_bot) ? ==>> think about that... |
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| 176 | ! bottom friction (explicit before friction) |
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| 177 | zmsku = ( 2._wp - umask(ji-1,jj,mbkt(ji,jj)) * umask(ji,jj,mbkt(ji,jj)) ) |
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| 178 | zmskv = ( 2._wp - vmask(ji,jj-1,mbkt(ji,jj)) * vmask(ji,jj,mbkt(ji,jj)) ) ! (CAUTION: CdU<0) |
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[11949] | 179 | ustar2_bot(ji,jj) = - rCdU_bot(ji,jj) * SQRT( ( zmsku*( uu(ji,jj,mbkt(ji,jj),Kbb)+uu(ji-1,jj,mbkt(ji,jj),Kbb) ) )**2 & |
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| 180 | & + ( zmskv*( vv(ji,jj,mbkt(ji,jj),Kbb)+vv(ji,jj-1,mbkt(ji,jj),Kbb) ) )**2 ) |
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[9019] | 181 | END DO |
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| 182 | END DO |
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| 183 | IF( ln_isfcav ) THEN !top friction |
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| 184 | DO jj = 2, jpjm1 |
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| 185 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 186 | zmsku = ( 2. - umask(ji-1,jj,mikt(ji,jj)) * umask(ji,jj,mikt(ji,jj)) ) |
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| 187 | zmskv = ( 2. - vmask(ji,jj-1,mikt(ji,jj)) * vmask(ji,jj,mikt(ji,jj)) ) ! (CAUTION: CdU<0) |
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[11949] | 188 | ustar2_top(ji,jj) = - rCdU_top(ji,jj) * SQRT( ( zmsku*( uu(ji,jj,mikt(ji,jj),Kbb)+uu(ji-1,jj,mikt(ji,jj),Kbb) ) )**2 & |
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| 189 | & + ( zmskv*( vv(ji,jj,mikt(ji,jj),Kbb)+vv(ji,jj-1,mikt(ji,jj),Kbb) ) )**2 ) |
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[9019] | 190 | END DO |
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| 191 | END DO |
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| 192 | ENDIF |
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| 193 | |
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| 194 | SELECT CASE ( nn_z0_met ) !== Set surface roughness length ==! |
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| 195 | CASE ( 0 ) ! Constant roughness |
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[5109] | 196 | zhsro(:,:) = rn_hsro |
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| 197 | CASE ( 1 ) ! Standard Charnock formula |
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[9019] | 198 | zhsro(:,:) = MAX( rsbc_zs1 * ustar2_surf(:,:) , rn_hsro ) |
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[5109] | 199 | CASE ( 2 ) ! Roughness formulae according to Rascle et al., Ocean Modelling (2008) |
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[9019] | 200 | !!gm faster coding : the 2 comment lines should be used |
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| 201 | !!gm zcof = 2._wp * 0.6_wp / 28._wp |
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| 202 | !!gm zdep(:,:) = 30._wp * TANH( zcof/ SQRT( MAX(ustar2_surf(:,:),rsmall) ) ) ! Wave age (eq. 10) |
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| 203 | zdep (:,:) = 30.*TANH( 2.*0.3/(28.*SQRT(MAX(ustar2_surf(:,:),rsmall))) ) ! Wave age (eq. 10) |
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| 204 | zhsro(:,:) = MAX(rsbc_zs2 * ustar2_surf(:,:) * zdep(:,:)**1.5, rn_hsro) ! zhsro = rn_frac_hs * Hsw (eq. 11) |
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[7646] | 205 | CASE ( 3 ) ! Roughness given by the wave model (coupled or read in file) |
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[9019] | 206 | zhsro(:,:) = rn_frac_hs * hsw(:,:) ! (rn_frac_hs=1.6 see Eq. (5) of Rascle et al. 2008 ) |
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[5109] | 207 | END SELECT |
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[9019] | 208 | ! |
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| 209 | DO jk = 2, jpkm1 !== Compute dissipation rate ==! |
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| 210 | DO jj = 1, jpjm1 |
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| 211 | DO ji = 1, jpim1 |
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| 212 | eps(ji,jj,jk) = rc03 * en(ji,jj,jk) * SQRT( en(ji,jj,jk) ) / hmxl_n(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 | ! Save tke at before time step |
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[9019] | 218 | eb (:,:,:) = en (:,:,:) |
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| 219 | hmxl_b(:,:,:) = hmxl_n(:,:,:) |
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[2048] | 220 | |
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[2397] | 221 | IF( nn_clos == 0 ) THEN ! Mellor-Yamada |
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[2048] | 222 | DO jk = 2, jpkm1 |
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| 223 | DO jj = 2, jpjm1 |
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| 224 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[11949] | 225 | zup = hmxl_n(ji,jj,jk) * gdepw(ji,jj,mbkt(ji,jj)+1,Kmm) |
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| 226 | zdown = vkarmn * gdepw(ji,jj,jk,Kmm) * ( -gdepw(ji,jj,jk,Kmm) + gdepw(ji,jj,mbkt(ji,jj)+1,Kmm) ) |
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[2397] | 227 | zcoef = ( zup / MAX( zdown, rsmall ) ) |
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| 228 | zwall (ji,jj,jk) = ( 1._wp + re2 * zcoef*zcoef ) * tmask(ji,jj,jk) |
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| 229 | END DO |
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| 230 | END DO |
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| 231 | END DO |
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[2048] | 232 | ENDIF |
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| 233 | |
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| 234 | !!---------------------------------!! |
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| 235 | !! Equation to prognostic k !! |
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| 236 | !!---------------------------------!! |
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| 237 | ! |
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| 238 | ! Now Turbulent kinetic energy (output in en) |
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| 239 | ! ------------------------------- |
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| 240 | ! Resolution of a tridiagonal linear system by a "methode de chasse" |
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| 241 | ! computation from level 2 to jpkm1 (e(1) computed after and e(jpk)=0 ). |
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| 242 | ! The surface boundary condition are set after |
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| 243 | ! The bottom boundary condition are also set after. In standard e(bottom)=0. |
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[9019] | 244 | ! zdiag : diagonal zd_up : upper diagonal zd_lw : lower diagonal |
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[2048] | 245 | ! Warning : after this step, en : right hand side of the matrix |
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| 246 | |
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| 247 | DO jk = 2, jpkm1 |
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| 248 | DO jj = 2, jpjm1 |
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[9019] | 249 | DO ji = 2, jpim1 |
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[2048] | 250 | ! |
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[9019] | 251 | buoy = - p_avt(ji,jj,jk) * rn2(ji,jj,jk) ! stratif. destruction |
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[2048] | 252 | ! |
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[9019] | 253 | diss = eps(ji,jj,jk) ! dissipation |
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[2048] | 254 | ! |
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[9019] | 255 | zdir = 0.5_wp + SIGN( 0.5_wp, p_sh2(ji,jj,jk) + buoy ) ! zdir =1(=0) if shear(ji,jj,jk)+buoy >0(<0) |
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[2048] | 256 | ! |
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[9019] | 257 | zesh2 = zdir*(p_sh2(ji,jj,jk)+buoy)+(1._wp-zdir)*p_sh2(ji,jj,jk) ! production term |
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| 258 | zdiss = zdir*(diss/en(ji,jj,jk)) +(1._wp-zdir)*(diss-buoy)/en(ji,jj,jk) ! dissipation term |
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| 259 | !!gm better coding, identical results |
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| 260 | ! zesh2 = p_sh2(ji,jj,jk) + zdir*buoy ! production term |
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| 261 | ! zdiss = ( diss - (1._wp-zdir)*buoy ) / en(ji,jj,jk) ! dissipation term |
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| 262 | !!gm |
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[2048] | 263 | ! |
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[2299] | 264 | ! Compute a wall function from 1. to rsc_psi*zwall/rsc_psi0 |
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[2048] | 265 | ! Note that as long that Dirichlet boundary conditions are NOT set at the first and last levels (GOTM style) |
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| 266 | ! there is no need to set a boundary condition for zwall_psi at the top and bottom boundaries. |
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[2299] | 267 | ! Otherwise, this should be rsc_psi/rsc_psi0 |
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[2397] | 268 | IF( ln_sigpsi ) THEN |
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| 269 | zsigpsi = MIN( 1._wp, zesh2 / eps(ji,jj,jk) ) ! 0. <= zsigpsi <= 1. |
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[3294] | 270 | zwall_psi(ji,jj,jk) = rsc_psi / & |
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| 271 | & ( zsigpsi * rsc_psi + (1._wp-zsigpsi) * rsc_psi0 / MAX( zwall(ji,jj,jk), 1._wp ) ) |
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[2048] | 272 | ELSE |
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[2397] | 273 | zwall_psi(ji,jj,jk) = 1._wp |
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[2048] | 274 | ENDIF |
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| 275 | ! |
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| 276 | ! building the matrix |
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[2299] | 277 | zcof = rfact_tke * tmask(ji,jj,jk) |
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[10342] | 278 | ! ! lower diagonal, in fact not used for jk = 2 (see surface conditions) |
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[11949] | 279 | zd_lw(ji,jj,jk) = zcof * ( p_avm(ji,jj,jk ) + p_avm(ji,jj,jk-1) ) / ( e3t(ji,jj,jk-1,Kmm) * e3w(ji,jj,jk,Kmm) ) |
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[10342] | 280 | ! ! upper diagonal, in fact not used for jk = ibotm1 (see bottom conditions) |
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[11949] | 281 | zd_up(ji,jj,jk) = zcof * ( p_avm(ji,jj,jk+1) + p_avm(ji,jj,jk ) ) / ( e3t(ji,jj,jk ,Kmm) * e3w(ji,jj,jk,Kmm) ) |
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[10342] | 282 | ! ! diagonal |
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[9019] | 283 | zdiag(ji,jj,jk) = 1._wp - zd_lw(ji,jj,jk) - zd_up(ji,jj,jk) + rdt * zdiss * wmask(ji,jj,jk) |
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[10342] | 284 | ! ! right hand side in en |
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[9019] | 285 | en(ji,jj,jk) = en(ji,jj,jk) + rdt * zesh2 * wmask(ji,jj,jk) |
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[2048] | 286 | END DO |
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| 287 | END DO |
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| 288 | END DO |
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| 289 | ! |
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[9019] | 290 | zdiag(:,:,jpk) = 1._wp |
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[2048] | 291 | ! |
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| 292 | ! Set surface condition on zwall_psi (1 at the bottom) |
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[9019] | 293 | zwall_psi(:,:, 1 ) = zwall_psi(:,:,2) |
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| 294 | zwall_psi(:,:,jpk) = 1._wp |
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[5109] | 295 | ! |
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[2048] | 296 | ! Surface boundary condition on tke |
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| 297 | ! --------------------------------- |
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| 298 | ! |
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[5109] | 299 | SELECT CASE ( nn_bc_surf ) |
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[2048] | 300 | ! |
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[9019] | 301 | CASE ( 0 ) ! Dirichlet boundary condition (set e at k=1 & 2) |
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[5109] | 302 | ! First level |
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[9019] | 303 | en (:,:,1) = MAX( rn_emin , rc02r * ustar2_surf(:,:) * (1._wp + rsbc_tke1)**r2_3 ) |
---|
| 304 | zd_lw(:,:,1) = en(:,:,1) |
---|
| 305 | zd_up(:,:,1) = 0._wp |
---|
| 306 | zdiag(:,:,1) = 1._wp |
---|
[5109] | 307 | ! |
---|
| 308 | ! One level below |
---|
[11949] | 309 | en (:,:,2) = MAX( rc02r * ustar2_surf(:,:) * ( 1._wp + rsbc_tke1 * ((zhsro(:,:)+gdepw(:,:,2,Kmm)) & |
---|
[9019] | 310 | & / zhsro(:,:) )**(1.5_wp*ra_sf) )**(2._wp/3._wp) , rn_emin ) |
---|
| 311 | zd_lw(:,:,2) = 0._wp |
---|
| 312 | zd_up(:,:,2) = 0._wp |
---|
| 313 | zdiag(:,:,2) = 1._wp |
---|
[5109] | 314 | ! |
---|
| 315 | ! |
---|
[9019] | 316 | CASE ( 1 ) ! Neumann boundary condition (set d(e)/dz) |
---|
[5109] | 317 | ! |
---|
| 318 | ! Dirichlet conditions at k=1 |
---|
[9019] | 319 | en (:,:,1) = MAX( rc02r * ustar2_surf(:,:) * (1._wp + rsbc_tke1)**r2_3 , rn_emin ) |
---|
| 320 | zd_lw(:,:,1) = en(:,:,1) |
---|
| 321 | zd_up(:,:,1) = 0._wp |
---|
| 322 | zdiag(:,:,1) = 1._wp |
---|
[5109] | 323 | ! |
---|
| 324 | ! at k=2, set de/dz=Fw |
---|
| 325 | !cbr |
---|
[9019] | 326 | zdiag(:,:,2) = zdiag(:,:,2) + zd_lw(:,:,2) ! Remove zd_lw from zdiag |
---|
| 327 | zd_lw(:,:,2) = 0._wp |
---|
[11949] | 328 | zkar (:,:) = (rl_sf + (vkarmn-rl_sf)*(1.-EXP(-rtrans*gdept(:,:,1,Kmm)/zhsro(:,:)) )) |
---|
[9019] | 329 | zflxs(:,:) = rsbc_tke2 * ustar2_surf(:,:)**1.5_wp * zkar(:,:) & |
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[11949] | 330 | & * ( ( zhsro(:,:)+gdept(:,:,1,Kmm) ) / zhsro(:,:) )**(1.5_wp*ra_sf) |
---|
| 331 | !!gm why not : * ( 1._wp + gdept(:,:,1,Kmm) / zhsro(:,:) )**(1.5_wp*ra_sf) |
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| 332 | en(:,:,2) = en(:,:,2) + zflxs(:,:) / e3w(:,:,2,Kmm) |
---|
[5109] | 333 | ! |
---|
| 334 | ! |
---|
[2048] | 335 | END SELECT |
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| 336 | |
---|
| 337 | ! Bottom boundary condition on tke |
---|
| 338 | ! -------------------------------- |
---|
| 339 | ! |
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[5109] | 340 | SELECT CASE ( nn_bc_bot ) |
---|
[2048] | 341 | ! |
---|
| 342 | CASE ( 0 ) ! Dirichlet |
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[9019] | 343 | ! ! en(ibot) = u*^2 / Co2 and hmxl_n(ibot) = rn_lmin |
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[2397] | 344 | ! ! Balance between the production and the dissipation terms |
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| 345 | DO jj = 2, jpjm1 |
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| 346 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[9019] | 347 | !!gm This means that bottom and ocean w-level above have a specified "en" value. Sure ???? |
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| 348 | !! With thick deep ocean level thickness, this may be quite large, no ??? |
---|
| 349 | !! in particular in ocean cavities where top stratification can be large... |
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[2450] | 350 | ibot = mbkt(ji,jj) + 1 ! k bottom level of w-point |
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| 351 | ibotm1 = mbkt(ji,jj) ! k-1 bottom level of w-point but >=1 |
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[2397] | 352 | ! |
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[9019] | 353 | z_en = MAX( rc02r * ustar2_bot(ji,jj), rn_emin ) |
---|
[2397] | 354 | ! |
---|
[9019] | 355 | ! Dirichlet condition applied at: |
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| 356 | ! Bottom level (ibot) & Just above it (ibotm1) |
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| 357 | zd_lw(ji,jj,ibot) = 0._wp ; zd_lw(ji,jj,ibotm1) = 0._wp |
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| 358 | zd_up(ji,jj,ibot) = 0._wp ; zd_up(ji,jj,ibotm1) = 0._wp |
---|
| 359 | zdiag(ji,jj,ibot) = 1._wp ; zdiag(ji,jj,ibotm1) = 1._wp |
---|
| 360 | en (ji,jj,ibot) = z_en ; en (ji,jj,ibotm1) = z_en |
---|
[2397] | 361 | END DO |
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[2048] | 362 | END DO |
---|
[2397] | 363 | ! |
---|
[9019] | 364 | IF( ln_isfcav) THEN ! top boundary (ocean cavity) |
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| 365 | DO jj = 2, jpjm1 |
---|
| 366 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 367 | itop = mikt(ji,jj) ! k top w-point |
---|
| 368 | itopp1 = mikt(ji,jj) + 1 ! k+1 1st w-point below the top one |
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| 369 | ! ! mask at the ocean surface points |
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| 370 | z_en = MAX( rc02r * ustar2_top(ji,jj), rn_emin ) * ( 1._wp - tmask(ji,jj,1) ) |
---|
| 371 | ! |
---|
| 372 | !!gm TO BE VERIFIED !!! |
---|
| 373 | ! Dirichlet condition applied at: |
---|
| 374 | ! top level (itop) & Just below it (itopp1) |
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| 375 | zd_lw(ji,jj,itop) = 0._wp ; zd_lw(ji,jj,itopp1) = 0._wp |
---|
| 376 | zd_up(ji,jj,itop) = 0._wp ; zd_up(ji,jj,itopp1) = 0._wp |
---|
| 377 | zdiag(ji,jj,itop) = 1._wp ; zdiag(ji,jj,itopp1) = 1._wp |
---|
| 378 | en (ji,jj,itop) = z_en ; en (ji,jj,itopp1) = z_en |
---|
| 379 | END DO |
---|
| 380 | END DO |
---|
| 381 | ENDIF |
---|
| 382 | ! |
---|
[2048] | 383 | CASE ( 1 ) ! Neumman boundary condition |
---|
[2397] | 384 | ! |
---|
| 385 | DO jj = 2, jpjm1 |
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| 386 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[2450] | 387 | ibot = mbkt(ji,jj) + 1 ! k bottom level of w-point |
---|
| 388 | ibotm1 = mbkt(ji,jj) ! k-1 bottom level of w-point but >=1 |
---|
[2397] | 389 | ! |
---|
[9019] | 390 | z_en = MAX( rc02r * ustar2_bot(ji,jj), rn_emin ) |
---|
| 391 | ! |
---|
[2397] | 392 | ! Bottom level Dirichlet condition: |
---|
[9019] | 393 | ! Bottom level (ibot) & Just above it (ibotm1) |
---|
| 394 | ! Dirichlet ! Neumann |
---|
| 395 | zd_lw(ji,jj,ibot) = 0._wp ! ! Remove zd_up from zdiag |
---|
| 396 | zdiag(ji,jj,ibot) = 1._wp ; zdiag(ji,jj,ibotm1) = zdiag(ji,jj,ibotm1) + zd_up(ji,jj,ibotm1) |
---|
| 397 | zd_up(ji,jj,ibot) = 0._wp ; zd_up(ji,jj,ibotm1) = 0._wp |
---|
[2397] | 398 | END DO |
---|
[2048] | 399 | END DO |
---|
[9019] | 400 | IF( ln_isfcav) THEN ! top boundary (ocean cavity) |
---|
| 401 | DO jj = 2, jpjm1 |
---|
| 402 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 403 | itop = mikt(ji,jj) ! k top w-point |
---|
| 404 | itopp1 = mikt(ji,jj) + 1 ! k+1 1st w-point below the top one |
---|
| 405 | ! ! mask at the ocean surface points |
---|
| 406 | z_en = MAX( rc02r * ustar2_top(ji,jj), rn_emin ) * ( 1._wp - tmask(ji,jj,1) ) |
---|
| 407 | ! |
---|
| 408 | ! Bottom level Dirichlet condition: |
---|
| 409 | ! Bottom level (ibot) & Just above it (ibotm1) |
---|
| 410 | ! Dirichlet ! Neumann |
---|
| 411 | zd_lw(ji,jj,itop) = 0._wp ! ! Remove zd_up from zdiag |
---|
| 412 | zdiag(ji,jj,itop) = 1._wp ; zdiag(ji,jj,itopp1) = zdiag(ji,jj,itopp1) + zd_up(ji,jj,itopp1) |
---|
| 413 | zd_up(ji,jj,itop) = 0._wp ; zd_up(ji,jj,itopp1) = 0._wp |
---|
| 414 | END DO |
---|
| 415 | END DO |
---|
| 416 | ENDIF |
---|
[2397] | 417 | ! |
---|
[2048] | 418 | END SELECT |
---|
| 419 | |
---|
| 420 | ! Matrix inversion (en prescribed at surface and the bottom) |
---|
| 421 | ! ---------------------------------------------------------- |
---|
| 422 | ! |
---|
| 423 | DO jk = 2, jpkm1 ! First recurrence : Dk = Dk - Lk * Uk-1 / Dk-1 |
---|
| 424 | DO jj = 2, jpjm1 |
---|
| 425 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 426 | zdiag(ji,jj,jk) = zdiag(ji,jj,jk) - zd_lw(ji,jj,jk) * zd_up(ji,jj,jk-1) / zdiag(ji,jj,jk-1) |
---|
[2048] | 427 | END DO |
---|
| 428 | END DO |
---|
| 429 | END DO |
---|
| 430 | DO jk = 2, jpk ! Second recurrence : Lk = RHSk - Lk / Dk-1 * Lk-1 |
---|
| 431 | DO jj = 2, jpjm1 |
---|
| 432 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 433 | zd_lw(ji,jj,jk) = en(ji,jj,jk) - zd_lw(ji,jj,jk) / zdiag(ji,jj,jk-1) * zd_lw(ji,jj,jk-1) |
---|
[2048] | 434 | END DO |
---|
| 435 | END DO |
---|
| 436 | END DO |
---|
| 437 | DO jk = jpk-1, 2, -1 ! thrid recurrence : Ek = ( Lk - Uk * Ek+1 ) / Dk |
---|
| 438 | DO jj = 2, jpjm1 |
---|
| 439 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 440 | en(ji,jj,jk) = ( zd_lw(ji,jj,jk) - zd_up(ji,jj,jk) * en(ji,jj,jk+1) ) / zdiag(ji,jj,jk) |
---|
[2048] | 441 | END DO |
---|
| 442 | END DO |
---|
| 443 | END DO |
---|
[2397] | 444 | ! ! set the minimum value of tke |
---|
[2048] | 445 | en(:,:,:) = MAX( en(:,:,:), rn_emin ) |
---|
[5109] | 446 | |
---|
[2048] | 447 | !!----------------------------------------!! |
---|
| 448 | !! Solve prognostic equation for psi !! |
---|
| 449 | !!----------------------------------------!! |
---|
| 450 | |
---|
| 451 | ! Set psi to previous time step value |
---|
| 452 | ! |
---|
| 453 | SELECT CASE ( nn_clos ) |
---|
| 454 | ! |
---|
| 455 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
[2397] | 456 | DO jk = 2, jpkm1 |
---|
| 457 | DO jj = 2, jpjm1 |
---|
| 458 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 459 | psi(ji,jj,jk) = eb(ji,jj,jk) * hmxl_b(ji,jj,jk) |
---|
[2397] | 460 | END DO |
---|
| 461 | END DO |
---|
| 462 | END DO |
---|
| 463 | ! |
---|
[2048] | 464 | CASE( 1 ) ! k-eps |
---|
[2397] | 465 | DO jk = 2, jpkm1 |
---|
| 466 | DO jj = 2, jpjm1 |
---|
| 467 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 468 | psi(ji,jj,jk) = eps(ji,jj,jk) |
---|
| 469 | END DO |
---|
| 470 | END DO |
---|
| 471 | END DO |
---|
| 472 | ! |
---|
[2048] | 473 | CASE( 2 ) ! k-w |
---|
[2397] | 474 | DO jk = 2, jpkm1 |
---|
| 475 | DO jj = 2, jpjm1 |
---|
| 476 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 477 | psi(ji,jj,jk) = SQRT( eb(ji,jj,jk) ) / ( rc0 * hmxl_b(ji,jj,jk) ) |
---|
[2397] | 478 | END DO |
---|
| 479 | END DO |
---|
| 480 | END DO |
---|
| 481 | ! |
---|
| 482 | CASE( 3 ) ! generic |
---|
| 483 | DO jk = 2, jpkm1 |
---|
| 484 | DO jj = 2, jpjm1 |
---|
| 485 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 486 | psi(ji,jj,jk) = rc02 * eb(ji,jj,jk) * hmxl_b(ji,jj,jk)**rnn |
---|
[2397] | 487 | END DO |
---|
| 488 | END DO |
---|
| 489 | END DO |
---|
| 490 | ! |
---|
[2048] | 491 | END SELECT |
---|
| 492 | ! |
---|
| 493 | ! Now gls (output in psi) |
---|
| 494 | ! ------------------------------- |
---|
| 495 | ! Resolution of a tridiagonal linear system by a "methode de chasse" |
---|
| 496 | ! computation from level 2 to jpkm1 (e(1) already computed and e(jpk)=0 ). |
---|
[9019] | 497 | ! zdiag : diagonal zd_up : upper diagonal zd_lw : lower diagonal |
---|
[2048] | 498 | ! Warning : after this step, en : right hand side of the matrix |
---|
| 499 | |
---|
| 500 | DO jk = 2, jpkm1 |
---|
| 501 | DO jj = 2, jpjm1 |
---|
| 502 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 503 | ! |
---|
| 504 | ! psi / k |
---|
| 505 | zratio = psi(ji,jj,jk) / eb(ji,jj,jk) |
---|
| 506 | ! |
---|
[9019] | 507 | ! psi3+ : stable : B=-KhN²<0 => N²>0 if rn2>0 zdir = 1 (stable) otherwise zdir = 0 (unstable) |
---|
| 508 | zdir = 0.5_wp + SIGN( 0.5_wp, rn2(ji,jj,jk) ) |
---|
[2048] | 509 | ! |
---|
[9019] | 510 | rpsi3 = zdir * rpsi3m + ( 1._wp - zdir ) * rpsi3p |
---|
[2048] | 511 | ! |
---|
| 512 | ! shear prod. - stratif. destruction |
---|
[9019] | 513 | prod = rpsi1 * zratio * p_sh2(ji,jj,jk) |
---|
[2048] | 514 | ! |
---|
| 515 | ! stratif. destruction |
---|
[9019] | 516 | buoy = rpsi3 * zratio * (- p_avt(ji,jj,jk) * rn2(ji,jj,jk) ) |
---|
[2048] | 517 | ! |
---|
| 518 | ! shear prod. - stratif. destruction |
---|
[2299] | 519 | diss = rpsi2 * zratio * zwall(ji,jj,jk) * eps(ji,jj,jk) |
---|
[2048] | 520 | ! |
---|
[9019] | 521 | zdir = 0.5_wp + SIGN( 0.5_wp, prod + buoy ) ! zdir =1(=0) if shear(ji,jj,jk)+buoy >0(<0) |
---|
[2048] | 522 | ! |
---|
[9019] | 523 | zesh2 = zdir * ( prod + buoy ) + (1._wp - zdir ) * prod ! production term |
---|
| 524 | zdiss = zdir * ( diss / psi(ji,jj,jk) ) + (1._wp - zdir ) * (diss-buoy) / psi(ji,jj,jk) ! dissipation term |
---|
[2048] | 525 | ! |
---|
| 526 | ! building the matrix |
---|
[2299] | 527 | zcof = rfact_psi * zwall_psi(ji,jj,jk) * tmask(ji,jj,jk) |
---|
[9019] | 528 | ! ! lower diagonal |
---|
[11949] | 529 | zd_lw(ji,jj,jk) = zcof * ( p_avm(ji,jj,jk ) + p_avm(ji,jj,jk-1) ) / ( e3t(ji,jj,jk-1,Kmm) * e3w(ji,jj,jk,Kmm) ) |
---|
[9019] | 530 | ! ! upper diagonal |
---|
[11949] | 531 | zd_up(ji,jj,jk) = zcof * ( p_avm(ji,jj,jk+1) + p_avm(ji,jj,jk ) ) / ( e3t(ji,jj,jk ,Kmm) * e3w(ji,jj,jk,Kmm) ) |
---|
[9019] | 532 | ! ! diagonal |
---|
| 533 | zdiag(ji,jj,jk) = 1._wp - zd_lw(ji,jj,jk) - zd_up(ji,jj,jk) + rdt * zdiss * wmask(ji,jj,jk) |
---|
| 534 | ! ! right hand side in psi |
---|
| 535 | psi(ji,jj,jk) = psi(ji,jj,jk) + rdt * zesh2 * wmask(ji,jj,jk) |
---|
[2048] | 536 | END DO |
---|
| 537 | END DO |
---|
| 538 | END DO |
---|
| 539 | ! |
---|
[9019] | 540 | zdiag(:,:,jpk) = 1._wp |
---|
[2048] | 541 | |
---|
| 542 | ! Surface boundary condition on psi |
---|
| 543 | ! --------------------------------- |
---|
| 544 | ! |
---|
[5109] | 545 | SELECT CASE ( nn_bc_surf ) |
---|
[2048] | 546 | ! |
---|
| 547 | CASE ( 0 ) ! Dirichlet boundary conditions |
---|
[9019] | 548 | ! |
---|
| 549 | ! Surface value |
---|
| 550 | zdep (:,:) = zhsro(:,:) * rl_sf ! Cosmetic |
---|
| 551 | psi (:,:,1) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
| 552 | zd_lw(:,:,1) = psi(:,:,1) |
---|
| 553 | zd_up(:,:,1) = 0._wp |
---|
| 554 | zdiag(:,:,1) = 1._wp |
---|
| 555 | ! |
---|
| 556 | ! One level below |
---|
[11949] | 557 | zkar (:,:) = (rl_sf + (vkarmn-rl_sf)*(1._wp-EXP(-rtrans*gdepw(:,:,2,Kmm)/zhsro(:,:) ))) |
---|
| 558 | zdep (:,:) = (zhsro(:,:) + gdepw(:,:,2,Kmm)) * zkar(:,:) |
---|
[9019] | 559 | psi (:,:,2) = rc0**rpp * en(:,:,2)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
| 560 | zd_lw(:,:,2) = 0._wp |
---|
| 561 | zd_up(:,:,2) = 0._wp |
---|
| 562 | zdiag(:,:,2) = 1._wp |
---|
| 563 | ! |
---|
[2048] | 564 | CASE ( 1 ) ! Neumann boundary condition on d(psi)/dz |
---|
[9019] | 565 | ! |
---|
| 566 | ! Surface value: Dirichlet |
---|
| 567 | zdep (:,:) = zhsro(:,:) * rl_sf |
---|
| 568 | psi (:,:,1) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
| 569 | zd_lw(:,:,1) = psi(:,:,1) |
---|
| 570 | zd_up(:,:,1) = 0._wp |
---|
| 571 | zdiag(:,:,1) = 1._wp |
---|
| 572 | ! |
---|
| 573 | ! Neumann condition at k=2 |
---|
| 574 | zdiag(:,:,2) = zdiag(:,:,2) + zd_lw(:,:,2) ! Remove zd_lw from zdiag |
---|
| 575 | zd_lw(:,:,2) = 0._wp |
---|
| 576 | ! |
---|
| 577 | ! Set psi vertical flux at the surface: |
---|
[11949] | 578 | zkar (:,:) = rl_sf + (vkarmn-rl_sf)*(1._wp-EXP(-rtrans*gdept(:,:,1,Kmm)/zhsro(:,:) )) ! Lengh scale slope |
---|
| 579 | zdep (:,:) = ((zhsro(:,:) + gdept(:,:,1,Kmm)) / zhsro(:,:))**(rmm*ra_sf) |
---|
[9019] | 580 | zflxs(:,:) = (rnn + rsbc_tke1 * (rnn + rmm*ra_sf) * zdep(:,:))*(1._wp + rsbc_tke1*zdep(:,:))**(2._wp*rmm/3._wp-1_wp) |
---|
| 581 | zdep (:,:) = rsbc_psi1 * (zwall_psi(:,:,1)*p_avm(:,:,1)+zwall_psi(:,:,2)*p_avm(:,:,2)) * & |
---|
[11949] | 582 | & ustar2_surf(:,:)**rmm * zkar(:,:)**rnn * (zhsro(:,:) + gdept(:,:,1,Kmm))**(rnn-1.) |
---|
[9019] | 583 | zflxs(:,:) = zdep(:,:) * zflxs(:,:) |
---|
[11949] | 584 | psi (:,:,2) = psi(:,:,2) + zflxs(:,:) / e3w(:,:,2,Kmm) |
---|
[9019] | 585 | ! |
---|
[2048] | 586 | END SELECT |
---|
| 587 | |
---|
| 588 | ! Bottom boundary condition on psi |
---|
| 589 | ! -------------------------------- |
---|
| 590 | ! |
---|
[9019] | 591 | !!gm should be done for ISF (top boundary cond.) |
---|
| 592 | !!gm so, totally new staff needed ===>>> think about that ! |
---|
| 593 | ! |
---|
| 594 | SELECT CASE ( nn_bc_bot ) ! bottom boundary |
---|
[2048] | 595 | ! |
---|
| 596 | CASE ( 0 ) ! Dirichlet |
---|
[9019] | 597 | ! ! en(ibot) = u*^2 / Co2 and hmxl_n(ibot) = vkarmn * r_z0_bot |
---|
[2397] | 598 | ! ! Balance between the production and the dissipation terms |
---|
| 599 | DO jj = 2, jpjm1 |
---|
| 600 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[2450] | 601 | ibot = mbkt(ji,jj) + 1 ! k bottom level of w-point |
---|
| 602 | ibotm1 = mbkt(ji,jj) ! k-1 bottom level of w-point but >=1 |
---|
[9019] | 603 | zdep(ji,jj) = vkarmn * r_z0_bot |
---|
[2397] | 604 | psi (ji,jj,ibot) = rc0**rpp * en(ji,jj,ibot)**rmm * zdep(ji,jj)**rnn |
---|
[9019] | 605 | zd_lw(ji,jj,ibot) = 0._wp |
---|
| 606 | zd_up(ji,jj,ibot) = 0._wp |
---|
| 607 | zdiag(ji,jj,ibot) = 1._wp |
---|
[2397] | 608 | ! |
---|
| 609 | ! Just above last level, Dirichlet condition again (GOTM like) |
---|
[11949] | 610 | zdep(ji,jj) = vkarmn * ( r_z0_bot + e3t(ji,jj,ibotm1,Kmm) ) |
---|
[2397] | 611 | psi (ji,jj,ibotm1) = rc0**rpp * en(ji,jj,ibot )**rmm * zdep(ji,jj)**rnn |
---|
[9019] | 612 | zd_lw(ji,jj,ibotm1) = 0._wp |
---|
| 613 | zd_up(ji,jj,ibotm1) = 0._wp |
---|
| 614 | zdiag(ji,jj,ibotm1) = 1._wp |
---|
[2397] | 615 | END DO |
---|
[2048] | 616 | END DO |
---|
[2397] | 617 | ! |
---|
[2048] | 618 | CASE ( 1 ) ! Neumman boundary condition |
---|
[2397] | 619 | ! |
---|
| 620 | DO jj = 2, jpjm1 |
---|
| 621 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[2450] | 622 | ibot = mbkt(ji,jj) + 1 ! k bottom level of w-point |
---|
| 623 | ibotm1 = mbkt(ji,jj) ! k-1 bottom level of w-point but >=1 |
---|
[2397] | 624 | ! |
---|
| 625 | ! Bottom level Dirichlet condition: |
---|
[9019] | 626 | zdep(ji,jj) = vkarmn * r_z0_bot |
---|
[2397] | 627 | psi (ji,jj,ibot) = rc0**rpp * en(ji,jj,ibot)**rmm * zdep(ji,jj)**rnn |
---|
| 628 | ! |
---|
[9019] | 629 | zd_lw(ji,jj,ibot) = 0._wp |
---|
| 630 | zd_up(ji,jj,ibot) = 0._wp |
---|
| 631 | zdiag(ji,jj,ibot) = 1._wp |
---|
[2397] | 632 | ! |
---|
| 633 | ! Just above last level: Neumann condition with flux injection |
---|
[9019] | 634 | zdiag(ji,jj,ibotm1) = zdiag(ji,jj,ibotm1) + zd_up(ji,jj,ibotm1) ! Remove zd_up from zdiag |
---|
| 635 | zd_up(ji,jj,ibotm1) = 0. |
---|
[2397] | 636 | ! |
---|
| 637 | ! Set psi vertical flux at the bottom: |
---|
[11949] | 638 | zdep(ji,jj) = r_z0_bot + 0.5_wp*e3t(ji,jj,ibotm1,Kmm) |
---|
[9019] | 639 | zflxb = rsbc_psi2 * ( p_avm(ji,jj,ibot) + p_avm(ji,jj,ibotm1) ) & |
---|
[2397] | 640 | & * (0.5_wp*(en(ji,jj,ibot)+en(ji,jj,ibotm1)))**rmm * zdep(ji,jj)**(rnn-1._wp) |
---|
[11949] | 641 | psi(ji,jj,ibotm1) = psi(ji,jj,ibotm1) + zflxb / e3w(ji,jj,ibotm1,Kmm) |
---|
[2397] | 642 | END DO |
---|
[2048] | 643 | END DO |
---|
[2397] | 644 | ! |
---|
[2048] | 645 | END SELECT |
---|
| 646 | |
---|
| 647 | ! Matrix inversion |
---|
| 648 | ! ---------------- |
---|
| 649 | ! |
---|
| 650 | DO jk = 2, jpkm1 ! First recurrence : Dk = Dk - Lk * Uk-1 / Dk-1 |
---|
| 651 | DO jj = 2, jpjm1 |
---|
| 652 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 653 | zdiag(ji,jj,jk) = zdiag(ji,jj,jk) - zd_lw(ji,jj,jk) * zd_up(ji,jj,jk-1) / zdiag(ji,jj,jk-1) |
---|
[2048] | 654 | END DO |
---|
| 655 | END DO |
---|
| 656 | END DO |
---|
| 657 | DO jk = 2, jpk ! Second recurrence : Lk = RHSk - Lk / Dk-1 * Lk-1 |
---|
| 658 | DO jj = 2, jpjm1 |
---|
| 659 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 660 | zd_lw(ji,jj,jk) = psi(ji,jj,jk) - zd_lw(ji,jj,jk) / zdiag(ji,jj,jk-1) * zd_lw(ji,jj,jk-1) |
---|
[2048] | 661 | END DO |
---|
| 662 | END DO |
---|
| 663 | END DO |
---|
| 664 | DO jk = jpk-1, 2, -1 ! Third recurrence : Ek = ( Lk - Uk * Ek+1 ) / Dk |
---|
| 665 | DO jj = 2, jpjm1 |
---|
| 666 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 667 | psi(ji,jj,jk) = ( zd_lw(ji,jj,jk) - zd_up(ji,jj,jk) * psi(ji,jj,jk+1) ) / zdiag(ji,jj,jk) |
---|
[2048] | 668 | END DO |
---|
| 669 | END DO |
---|
| 670 | END DO |
---|
| 671 | |
---|
| 672 | ! Set dissipation |
---|
| 673 | !---------------- |
---|
| 674 | |
---|
| 675 | SELECT CASE ( nn_clos ) |
---|
| 676 | ! |
---|
| 677 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
[2397] | 678 | DO jk = 1, jpkm1 |
---|
| 679 | DO jj = 2, jpjm1 |
---|
| 680 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[5109] | 681 | 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] | 682 | END DO |
---|
| 683 | END DO |
---|
| 684 | END DO |
---|
| 685 | ! |
---|
[2048] | 686 | CASE( 1 ) ! k-eps |
---|
[2397] | 687 | DO jk = 1, jpkm1 |
---|
| 688 | DO jj = 2, jpjm1 |
---|
| 689 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 690 | eps(ji,jj,jk) = psi(ji,jj,jk) |
---|
| 691 | END DO |
---|
| 692 | END DO |
---|
| 693 | END DO |
---|
| 694 | ! |
---|
[2048] | 695 | CASE( 2 ) ! k-w |
---|
[2397] | 696 | DO jk = 1, jpkm1 |
---|
| 697 | DO jj = 2, jpjm1 |
---|
| 698 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 699 | eps(ji,jj,jk) = rc04 * en(ji,jj,jk) * psi(ji,jj,jk) |
---|
| 700 | END DO |
---|
| 701 | END DO |
---|
| 702 | END DO |
---|
| 703 | ! |
---|
| 704 | CASE( 3 ) ! generic |
---|
| 705 | zcoef = rc0**( 3._wp + rpp/rnn ) |
---|
| 706 | zex1 = ( 1.5_wp + rmm/rnn ) |
---|
| 707 | zex2 = -1._wp / rnn |
---|
| 708 | DO jk = 1, jpkm1 |
---|
| 709 | DO jj = 2, jpjm1 |
---|
| 710 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 711 | eps(ji,jj,jk) = zcoef * en(ji,jj,jk)**zex1 * psi(ji,jj,jk)**zex2 |
---|
| 712 | END DO |
---|
| 713 | END DO |
---|
| 714 | END DO |
---|
| 715 | ! |
---|
[2048] | 716 | END SELECT |
---|
| 717 | |
---|
| 718 | ! Limit dissipation rate under stable stratification |
---|
| 719 | ! -------------------------------------------------- |
---|
[9019] | 720 | DO jk = 1, jpkm1 ! Note that this set boundary conditions on hmxl_n at the same time |
---|
[2048] | 721 | DO jj = 2, jpjm1 |
---|
| 722 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 723 | ! limitation |
---|
[9019] | 724 | eps (ji,jj,jk) = MAX( eps(ji,jj,jk), rn_epsmin ) |
---|
| 725 | hmxl_n(ji,jj,jk) = rc03 * en(ji,jj,jk) * SQRT( en(ji,jj,jk) ) / eps(ji,jj,jk) |
---|
[2048] | 726 | ! Galperin criterium (NOTE : Not required if the proper value of C3 in stable cases is calculated) |
---|
| 727 | zrn2 = MAX( rn2(ji,jj,jk), rsmall ) |
---|
[9019] | 728 | IF( ln_length_lim ) hmxl_n(ji,jj,jk) = MIN( rn_clim_galp * SQRT( 2._wp * en(ji,jj,jk) / zrn2 ), hmxl_n(ji,jj,jk) ) |
---|
[2048] | 729 | END DO |
---|
| 730 | END DO |
---|
| 731 | END DO |
---|
| 732 | |
---|
| 733 | ! |
---|
| 734 | ! Stability function and vertical viscosity and diffusivity |
---|
| 735 | ! --------------------------------------------------------- |
---|
| 736 | ! |
---|
| 737 | SELECT CASE ( nn_stab_func ) |
---|
| 738 | ! |
---|
| 739 | CASE ( 0 , 1 ) ! Galperin or Kantha-Clayson stability functions |
---|
[2397] | 740 | DO jk = 2, jpkm1 |
---|
| 741 | DO jj = 2, jpjm1 |
---|
| 742 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 743 | ! zcof = l²/q² |
---|
[9019] | 744 | zcof = hmxl_b(ji,jj,jk) * hmxl_b(ji,jj,jk) / ( 2._wp*eb(ji,jj,jk) ) |
---|
[2397] | 745 | ! Gh = -N²l²/q² |
---|
| 746 | gh = - rn2(ji,jj,jk) * zcof |
---|
| 747 | gh = MIN( gh, rgh0 ) |
---|
| 748 | gh = MAX( gh, rghmin ) |
---|
| 749 | ! Stability functions from Kantha and Clayson (if C2=C3=0 => Galperin) |
---|
| 750 | sh = ra2*( 1._wp-6._wp*ra1/rb1 ) / ( 1.-3.*ra2*gh*(6.*ra1+rb2*( 1._wp-rc3 ) ) ) |
---|
| 751 | 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) |
---|
| 752 | ! |
---|
[9019] | 753 | ! Store stability function in zstt and zstm |
---|
| 754 | zstt(ji,jj,jk) = rc_diff * sh * tmask(ji,jj,jk) |
---|
| 755 | zstm(ji,jj,jk) = rc_diff * sm * tmask(ji,jj,jk) |
---|
[2397] | 756 | END DO |
---|
[2048] | 757 | END DO |
---|
| 758 | END DO |
---|
[2397] | 759 | ! |
---|
[2048] | 760 | CASE ( 2, 3 ) ! Canuto stability functions |
---|
[2397] | 761 | DO jk = 2, jpkm1 |
---|
| 762 | DO jj = 2, jpjm1 |
---|
| 763 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
| 764 | ! zcof = l²/q² |
---|
[9019] | 765 | zcof = hmxl_b(ji,jj,jk)*hmxl_b(ji,jj,jk) / ( 2._wp * eb(ji,jj,jk) ) |
---|
[2397] | 766 | ! Gh = -N²l²/q² |
---|
| 767 | gh = - rn2(ji,jj,jk) * zcof |
---|
| 768 | gh = MIN( gh, rgh0 ) |
---|
| 769 | gh = MAX( gh, rghmin ) |
---|
| 770 | gh = gh * rf6 |
---|
| 771 | ! Gm = M²l²/q² Shear number |
---|
[9019] | 772 | shr = p_sh2(ji,jj,jk) / MAX( p_avm(ji,jj,jk), rsmall ) |
---|
[2397] | 773 | gm = MAX( shr * zcof , 1.e-10 ) |
---|
| 774 | gm = gm * rf6 |
---|
| 775 | gm = MIN ( (rd0 - rd1*gh + rd3*gh*gh) / (rd2-rd4*gh) , gm ) |
---|
| 776 | ! Stability functions from Canuto |
---|
| 777 | rcff = rd0 - rd1*gh +rd2*gm + rd3*gh*gh - rd4*gh*gm + rd5*gm*gm |
---|
| 778 | sm = (rs0 - rs1*gh + rs2*gm) / rcff |
---|
| 779 | sh = (rs4 - rs5*gh + rs6*gm) / rcff |
---|
| 780 | ! |
---|
[9019] | 781 | ! Store stability function in zstt and zstm |
---|
| 782 | zstt(ji,jj,jk) = rc_diff * sh * tmask(ji,jj,jk) |
---|
| 783 | zstm(ji,jj,jk) = rc_diff * sm * tmask(ji,jj,jk) |
---|
[2397] | 784 | END DO |
---|
[2048] | 785 | END DO |
---|
| 786 | END DO |
---|
[2397] | 787 | ! |
---|
[2048] | 788 | END SELECT |
---|
| 789 | |
---|
| 790 | ! Boundary conditions on stability functions for momentum (Neumann): |
---|
| 791 | ! Lines below are useless if GOTM style Dirichlet conditions are used |
---|
[5109] | 792 | |
---|
[9019] | 793 | zstm(:,:,1) = zstm(:,:,2) |
---|
[5109] | 794 | |
---|
[10342] | 795 | ! default value, in case jpk > mbkt(ji,jj)+1. Not needed but avoid a bug when looking for undefined values (-fpe0) |
---|
| 796 | zstm(:,:,jpk) = 0. |
---|
| 797 | DO jj = 2, jpjm1 ! update bottom with good values |
---|
[2048] | 798 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 799 | zstm(ji,jj,mbkt(ji,jj)+1) = zstm(ji,jj,mbkt(ji,jj)) |
---|
[2048] | 800 | END DO |
---|
| 801 | END DO |
---|
[10342] | 802 | |
---|
| 803 | zstt(:,:, 1) = wmask(:,:, 1) ! default value not needed but avoid a bug when looking for undefined values (-fpe0) |
---|
| 804 | zstt(:,:,jpk) = wmask(:,:,jpk) ! default value not needed but avoid a bug when looking for undefined values (-fpe0) |
---|
| 805 | |
---|
[9019] | 806 | !!gm should be done for ISF (top boundary cond.) |
---|
| 807 | !!gm so, totally new staff needed!!gm |
---|
[2048] | 808 | |
---|
| 809 | ! Compute diffusivities/viscosities |
---|
| 810 | ! The computation below could be restrained to jk=2 to jpkm1 if GOTM style Dirichlet conditions are used |
---|
[10342] | 811 | ! -> yes BUT p_avm(:,:1) and p_avm(:,:jpk) are used when we compute zd_lw(:,:2) and zd_up(:,:jpkm1). These values are |
---|
| 812 | ! later overwritten by surface/bottom boundaries conditions, so we don't really care of p_avm(:,:1) and p_avm(:,:jpk) |
---|
| 813 | ! for zd_lw and zd_up but they have to be defined to avoid a bug when looking for undefined values (-fpe0) |
---|
[2048] | 814 | DO jk = 1, jpk |
---|
| 815 | DO jj = 2, jpjm1 |
---|
| 816 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
[9019] | 817 | zsqen = SQRT( 2._wp * en(ji,jj,jk) ) * hmxl_n(ji,jj,jk) |
---|
| 818 | zavt = zsqen * zstt(ji,jj,jk) |
---|
| 819 | zavm = zsqen * zstm(ji,jj,jk) |
---|
| 820 | p_avt(ji,jj,jk) = MAX( zavt, avtb(jk) ) * wmask(ji,jj,jk) ! apply mask for zdfmxl routine |
---|
| 821 | p_avm(ji,jj,jk) = MAX( zavm, avmb(jk) ) ! Note that avm is not masked at the surface and the bottom |
---|
[2048] | 822 | END DO |
---|
| 823 | END DO |
---|
| 824 | END DO |
---|
[9019] | 825 | p_avt(:,:,1) = 0._wp |
---|
[2048] | 826 | ! |
---|
| 827 | IF(ln_ctl) THEN |
---|
[9440] | 828 | CALL prt_ctl( tab3d_1=en , clinfo1=' gls - e: ', tab3d_2=p_avt, clinfo2=' t: ', kdim=jpk) |
---|
| 829 | CALL prt_ctl( tab3d_1=p_avm, clinfo1=' gls - m: ', kdim=jpk ) |
---|
[2048] | 830 | ENDIF |
---|
| 831 | ! |
---|
| 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 |
---|
[9019] | 840 | !! viscosity computed using a GLS turbulent closure scheme |
---|
[2048] | 841 | !! |
---|
| 842 | !! ** Method : Read the namzdf_gls namelist and check the parameters |
---|
| 843 | !! |
---|
| 844 | !! ** input : Namlist namzdf_gls |
---|
| 845 | !! |
---|
| 846 | !! ** Action : Increase by 1 the nstop flag is setting problem encounter |
---|
| 847 | !! |
---|
| 848 | !!---------------------------------------------------------------------- |
---|
[2329] | 849 | INTEGER :: jk ! dummy loop indices |
---|
[4147] | 850 | INTEGER :: ios ! Local integer output status for namelist read |
---|
[2329] | 851 | REAL(wp):: zcr ! local scalar |
---|
[2048] | 852 | !! |
---|
| 853 | NAMELIST/namzdf_gls/rn_emin, rn_epsmin, ln_length_lim, & |
---|
[5109] | 854 | & rn_clim_galp, ln_sigpsi, rn_hsro, & |
---|
| 855 | & rn_crban, rn_charn, rn_frac_hs, & |
---|
| 856 | & nn_bc_surf, nn_bc_bot, nn_z0_met, & |
---|
[2048] | 857 | & nn_stab_func, nn_clos |
---|
| 858 | !!---------------------------------------------------------- |
---|
[3294] | 859 | ! |
---|
[4147] | 860 | READ ( numnam_ref, namzdf_gls, IOSTAT = ios, ERR = 901) |
---|
[11536] | 861 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_gls in reference namelist' ) |
---|
[2048] | 862 | |
---|
[4147] | 863 | READ ( numnam_cfg, namzdf_gls, IOSTAT = ios, ERR = 902 ) |
---|
[11536] | 864 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namzdf_gls in configuration namelist' ) |
---|
[4624] | 865 | IF(lwm) WRITE ( numond, namzdf_gls ) |
---|
[4147] | 866 | |
---|
[2397] | 867 | IF(lwp) THEN !* Control print |
---|
[2048] | 868 | WRITE(numout,*) |
---|
[9019] | 869 | WRITE(numout,*) 'zdf_gls_init : GLS turbulent closure scheme' |
---|
[2048] | 870 | WRITE(numout,*) '~~~~~~~~~~~~' |
---|
[2397] | 871 | WRITE(numout,*) ' Namelist namzdf_gls : set gls mixing parameters' |
---|
[5109] | 872 | WRITE(numout,*) ' minimum value of en rn_emin = ', rn_emin |
---|
| 873 | WRITE(numout,*) ' minimum value of eps rn_epsmin = ', rn_epsmin |
---|
| 874 | WRITE(numout,*) ' Limit dissipation rate under stable stratif. ln_length_lim = ', ln_length_lim |
---|
| 875 | WRITE(numout,*) ' Galperin limit (Standard: 0.53, Holt: 0.26) rn_clim_galp = ', rn_clim_galp |
---|
| 876 | WRITE(numout,*) ' TKE Surface boundary condition nn_bc_surf = ', nn_bc_surf |
---|
| 877 | WRITE(numout,*) ' TKE Bottom boundary condition nn_bc_bot = ', nn_bc_bot |
---|
| 878 | WRITE(numout,*) ' Modify psi Schmidt number (wb case) ln_sigpsi = ', ln_sigpsi |
---|
[2397] | 879 | WRITE(numout,*) ' Craig and Banner coefficient rn_crban = ', rn_crban |
---|
| 880 | WRITE(numout,*) ' Charnock coefficient rn_charn = ', rn_charn |
---|
[5109] | 881 | WRITE(numout,*) ' Surface roughness formula nn_z0_met = ', nn_z0_met |
---|
| 882 | WRITE(numout,*) ' Wave height frac. (used if nn_z0_met=2) rn_frac_hs = ', rn_frac_hs |
---|
[2397] | 883 | WRITE(numout,*) ' Stability functions nn_stab_func = ', nn_stab_func |
---|
| 884 | WRITE(numout,*) ' Type of closure nn_clos = ', nn_clos |
---|
[5109] | 885 | WRITE(numout,*) ' Surface roughness (m) rn_hsro = ', rn_hsro |
---|
[9019] | 886 | WRITE(numout,*) |
---|
| 887 | WRITE(numout,*) ' Namelist namdrg_top/_bot: used values:' |
---|
| 888 | WRITE(numout,*) ' top ocean cavity roughness (m) rn_z0(_top) = ', r_z0_top |
---|
| 889 | WRITE(numout,*) ' Bottom seafloor roughness (m) rn_z0(_bot) = ', r_z0_bot |
---|
| 890 | WRITE(numout,*) |
---|
[2048] | 891 | ENDIF |
---|
| 892 | |
---|
[9019] | 893 | ! !* allocate GLS arrays |
---|
[2715] | 894 | IF( zdf_gls_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'zdf_gls_init : unable to allocate arrays' ) |
---|
| 895 | |
---|
[2397] | 896 | ! !* Check of some namelist values |
---|
[9019] | 897 | 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' ) |
---|
| 898 | 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' ) |
---|
| 899 | 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' ) |
---|
| 900 | IF( nn_z0_met == 3 .AND. .NOT.ln_wave ) CALL ctl_stop( 'zdf_gls_init: nn_z0_met=3 requires ln_wave=T' ) |
---|
| 901 | 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' ) |
---|
| 902 | 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] | 903 | |
---|
[2715] | 904 | SELECT CASE ( nn_clos ) !* set the parameters for the chosen closure |
---|
[2048] | 905 | ! |
---|
[2715] | 906 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
[2397] | 907 | ! |
---|
[9019] | 908 | IF(lwp) WRITE(numout,*) ' ==>> k-kl closure chosen (i.e. closed to the classical Mellor-Yamada)' |
---|
| 909 | IF(lwp) WRITE(numout,*) |
---|
[2397] | 910 | rpp = 0._wp |
---|
| 911 | rmm = 1._wp |
---|
| 912 | rnn = 1._wp |
---|
| 913 | rsc_tke = 1.96_wp |
---|
| 914 | rsc_psi = 1.96_wp |
---|
| 915 | rpsi1 = 0.9_wp |
---|
| 916 | rpsi3p = 1._wp |
---|
| 917 | rpsi2 = 0.5_wp |
---|
| 918 | ! |
---|
[2048] | 919 | SELECT CASE ( nn_stab_func ) |
---|
[2397] | 920 | CASE( 0, 1 ) ; rpsi3m = 2.53_wp ! G88 or KC stability functions |
---|
[5109] | 921 | CASE( 2 ) ; rpsi3m = 2.62_wp ! Canuto A stability functions |
---|
[2397] | 922 | CASE( 3 ) ; rpsi3m = 2.38 ! Canuto B stability functions (caution : constant not identified) |
---|
| 923 | END SELECT |
---|
[2048] | 924 | ! |
---|
[2715] | 925 | CASE( 1 ) ! k-eps |
---|
[2397] | 926 | ! |
---|
[9019] | 927 | IF(lwp) WRITE(numout,*) ' ==>> k-eps closure chosen' |
---|
| 928 | IF(lwp) WRITE(numout,*) |
---|
[2397] | 929 | rpp = 3._wp |
---|
| 930 | rmm = 1.5_wp |
---|
| 931 | rnn = -1._wp |
---|
| 932 | rsc_tke = 1._wp |
---|
[5109] | 933 | rsc_psi = 1.2_wp ! Schmidt number for psi |
---|
[2397] | 934 | rpsi1 = 1.44_wp |
---|
| 935 | rpsi3p = 1._wp |
---|
| 936 | rpsi2 = 1.92_wp |
---|
| 937 | ! |
---|
| 938 | SELECT CASE ( nn_stab_func ) |
---|
| 939 | CASE( 0, 1 ) ; rpsi3m = -0.52_wp ! G88 or KC stability functions |
---|
| 940 | CASE( 2 ) ; rpsi3m = -0.629_wp ! Canuto A stability functions |
---|
| 941 | CASE( 3 ) ; rpsi3m = -0.566 ! Canuto B stability functions |
---|
[2048] | 942 | END SELECT |
---|
[2397] | 943 | ! |
---|
[2715] | 944 | CASE( 2 ) ! k-omega |
---|
[2397] | 945 | ! |
---|
[9019] | 946 | IF(lwp) WRITE(numout,*) ' ==>> k-omega closure chosen' |
---|
| 947 | IF(lwp) WRITE(numout,*) |
---|
[2397] | 948 | rpp = -1._wp |
---|
| 949 | rmm = 0.5_wp |
---|
| 950 | rnn = -1._wp |
---|
| 951 | rsc_tke = 2._wp |
---|
| 952 | rsc_psi = 2._wp |
---|
| 953 | rpsi1 = 0.555_wp |
---|
| 954 | rpsi3p = 1._wp |
---|
| 955 | rpsi2 = 0.833_wp |
---|
| 956 | ! |
---|
| 957 | SELECT CASE ( nn_stab_func ) |
---|
| 958 | CASE( 0, 1 ) ; rpsi3m = -0.58_wp ! G88 or KC stability functions |
---|
| 959 | CASE( 2 ) ; rpsi3m = -0.64_wp ! Canuto A stability functions |
---|
| 960 | CASE( 3 ) ; rpsi3m = -0.64_wp ! Canuto B stability functions caution : constant not identified) |
---|
| 961 | END SELECT |
---|
| 962 | ! |
---|
[2715] | 963 | CASE( 3 ) ! generic |
---|
[2397] | 964 | ! |
---|
[9019] | 965 | IF(lwp) WRITE(numout,*) ' ==>> generic closure chosen' |
---|
| 966 | IF(lwp) WRITE(numout,*) |
---|
[2397] | 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 | ! |
---|
[9019] | 989 | IF(lwp) WRITE(numout,*) ' ==>> Stability functions from Galperin' |
---|
[2397] | 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 | ! |
---|
[9019] | 1001 | IF(lwp) WRITE(numout,*) ' ==>> Stability functions from Kantha-Clayson' |
---|
[2397] | 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 | ! |
---|
[9019] | 1013 | IF(lwp) WRITE(numout,*) ' ==>> Stability functions from Canuto A' |
---|
[2397] | 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 | ! |
---|
[9019] | 1037 | IF(lwp) WRITE(numout,*) ' ==>> Stability functions from Canuto B' |
---|
[2397] | 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 |
---|
[9019] | 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.) ) |
---|
[5109] | 1086 | ENDIF |
---|
| 1087 | |
---|
[2048] | 1088 | ! |
---|
[2715] | 1089 | IF(lwp) THEN !* Control print |
---|
[2048] | 1090 | WRITE(numout,*) |
---|
[9019] | 1091 | WRITE(numout,*) ' Limit values :' |
---|
| 1092 | WRITE(numout,*) ' Parameter m = ', rmm |
---|
| 1093 | WRITE(numout,*) ' Parameter n = ', rnn |
---|
| 1094 | WRITE(numout,*) ' Parameter p = ', rpp |
---|
| 1095 | WRITE(numout,*) ' rpsi1 = ', rpsi1 |
---|
| 1096 | WRITE(numout,*) ' rpsi2 = ', rpsi2 |
---|
| 1097 | WRITE(numout,*) ' rpsi3m = ', rpsi3m |
---|
| 1098 | WRITE(numout,*) ' rpsi3p = ', rpsi3p |
---|
| 1099 | WRITE(numout,*) ' rsc_tke = ', rsc_tke |
---|
| 1100 | WRITE(numout,*) ' rsc_psi = ', rsc_psi |
---|
| 1101 | WRITE(numout,*) ' rsc_psi0 = ', rsc_psi0 |
---|
| 1102 | WRITE(numout,*) ' rc0 = ', rc0 |
---|
[2048] | 1103 | WRITE(numout,*) |
---|
[9019] | 1104 | WRITE(numout,*) ' Shear free turbulence parameters:' |
---|
| 1105 | WRITE(numout,*) ' rcm_sf = ', rcm_sf |
---|
| 1106 | WRITE(numout,*) ' ra_sf = ', ra_sf |
---|
| 1107 | WRITE(numout,*) ' rl_sf = ', rl_sf |
---|
[2048] | 1108 | ENDIF |
---|
| 1109 | |
---|
[2715] | 1110 | ! !* Constants initialization |
---|
[2397] | 1111 | rc02 = rc0 * rc0 ; rc02r = 1. / rc02 |
---|
| 1112 | rc03 = rc02 * rc0 |
---|
| 1113 | rc04 = rc03 * rc0 |
---|
[5109] | 1114 | rsbc_tke1 = -3._wp/2._wp*rn_crban*ra_sf*rl_sf ! Dirichlet + Wave breaking |
---|
| 1115 | rsbc_tke2 = rdt * rn_crban / rl_sf ! Neumann + Wave breaking |
---|
| 1116 | zcr = MAX(rsmall, rsbc_tke1**(1./(-ra_sf*3._wp/2._wp))-1._wp ) |
---|
| 1117 | rtrans = 0.2_wp / zcr ! Ad. inverse transition length between log and wave layer |
---|
| 1118 | rsbc_zs1 = rn_charn/grav ! Charnock formula for surface roughness |
---|
| 1119 | rsbc_zs2 = rn_frac_hs / 0.85_wp / grav * 665._wp ! Rascle formula for surface roughness |
---|
| 1120 | rsbc_psi1 = -0.5_wp * rdt * rc0**(rpp-2._wp*rmm) / rsc_psi |
---|
| 1121 | rsbc_psi2 = -0.5_wp * rdt * rc0**rpp * rnn * vkarmn**rnn / rsc_psi ! Neumann + NO Wave breaking |
---|
[9019] | 1122 | ! |
---|
[5109] | 1123 | rfact_tke = -0.5_wp / rsc_tke * rdt ! Cst used for the Diffusion term of tke |
---|
| 1124 | rfact_psi = -0.5_wp / rsc_psi * rdt ! Cst used for the Diffusion term of tke |
---|
[9019] | 1125 | ! |
---|
[2397] | 1126 | ! !* Wall proximity function |
---|
[9019] | 1127 | !!gm tmask or wmask ???? |
---|
| 1128 | zwall(:,:,:) = 1._wp * tmask(:,:,:) |
---|
[2048] | 1129 | |
---|
[9019] | 1130 | ! !* read or initialize all required files |
---|
| 1131 | CALL gls_rst( nit000, 'READ' ) ! (en, avt_k, avm_k, hmxl_n) |
---|
[2048] | 1132 | ! |
---|
[9367] | 1133 | IF( lwxios ) THEN |
---|
| 1134 | CALL iom_set_rstw_var_active('en') |
---|
| 1135 | CALL iom_set_rstw_var_active('avt_k') |
---|
| 1136 | CALL iom_set_rstw_var_active('avm_k') |
---|
| 1137 | CALL iom_set_rstw_var_active('hmxl_n') |
---|
| 1138 | ENDIF |
---|
| 1139 | ! |
---|
[2048] | 1140 | END SUBROUTINE zdf_gls_init |
---|
| 1141 | |
---|
[2329] | 1142 | |
---|
[2048] | 1143 | SUBROUTINE gls_rst( kt, cdrw ) |
---|
[2452] | 1144 | !!--------------------------------------------------------------------- |
---|
[9124] | 1145 | !! *** ROUTINE gls_rst *** |
---|
[2452] | 1146 | !! |
---|
| 1147 | !! ** Purpose : Read or write TKE file (en) in restart file |
---|
| 1148 | !! |
---|
| 1149 | !! ** Method : use of IOM library |
---|
| 1150 | !! if the restart does not contain TKE, en is either |
---|
| 1151 | !! set to rn_emin or recomputed (nn_igls/=0) |
---|
| 1152 | !!---------------------------------------------------------------------- |
---|
[9019] | 1153 | USE zdf_oce , ONLY : en, avt_k, avm_k ! ocean vertical physics |
---|
| 1154 | !! |
---|
| 1155 | INTEGER , INTENT(in) :: kt ! ocean time-step |
---|
| 1156 | CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag |
---|
[2452] | 1157 | ! |
---|
| 1158 | INTEGER :: jit, jk ! dummy loop indices |
---|
[9019] | 1159 | INTEGER :: id1, id2, id3, id4 |
---|
[2452] | 1160 | INTEGER :: ji, jj, ikbu, ikbv |
---|
| 1161 | REAL(wp):: cbx, cby |
---|
| 1162 | !!---------------------------------------------------------------------- |
---|
| 1163 | ! |
---|
| 1164 | IF( TRIM(cdrw) == 'READ' ) THEN ! Read/initialise |
---|
| 1165 | ! ! --------------- |
---|
| 1166 | IF( ln_rstart ) THEN !* Read the restart file |
---|
[9019] | 1167 | id1 = iom_varid( numror, 'en' , ldstop = .FALSE. ) |
---|
| 1168 | id2 = iom_varid( numror, 'avt_k' , ldstop = .FALSE. ) |
---|
| 1169 | id3 = iom_varid( numror, 'avm_k' , ldstop = .FALSE. ) |
---|
| 1170 | id4 = iom_varid( numror, 'hmxl_n', ldstop = .FALSE. ) |
---|
[2452] | 1171 | ! |
---|
[9019] | 1172 | IF( MIN( id1, id2, id3, id4 ) > 0 ) THEN ! all required arrays exist |
---|
[9367] | 1173 | CALL iom_get( numror, jpdom_autoglo, 'en' , en , ldxios = lrxios ) |
---|
| 1174 | CALL iom_get( numror, jpdom_autoglo, 'avt_k' , avt_k , ldxios = lrxios ) |
---|
| 1175 | CALL iom_get( numror, jpdom_autoglo, 'avm_k' , avm_k , ldxios = lrxios ) |
---|
| 1176 | CALL iom_get( numror, jpdom_autoglo, 'hmxl_n', hmxl_n, ldxios = lrxios ) |
---|
[2452] | 1177 | ELSE |
---|
[9019] | 1178 | IF(lwp) WRITE(numout,*) |
---|
| 1179 | IF(lwp) WRITE(numout,*) ' ==>> previous run without GLS scheme, set en and hmxl_n to background values' |
---|
| 1180 | en (:,:,:) = rn_emin |
---|
| 1181 | hmxl_n(:,:,:) = 0.05_wp |
---|
| 1182 | ! avt_k, avm_k already set to the background value in zdf_phy_init |
---|
[2452] | 1183 | ENDIF |
---|
| 1184 | ELSE !* Start from rest |
---|
[9019] | 1185 | IF(lwp) WRITE(numout,*) |
---|
| 1186 | IF(lwp) WRITE(numout,*) ' ==>> start from rest, set en and hmxl_n by background values' |
---|
| 1187 | en (:,:,:) = rn_emin |
---|
| 1188 | hmxl_n(:,:,:) = 0.05_wp |
---|
| 1189 | ! avt_k, avm_k already set to the background value in zdf_phy_init |
---|
[2452] | 1190 | ENDIF |
---|
| 1191 | ! |
---|
| 1192 | ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN ! Create restart file |
---|
| 1193 | ! ! ------------------- |
---|
| 1194 | IF(lwp) WRITE(numout,*) '---- gls-rst ----' |
---|
[9367] | 1195 | IF( lwxios ) CALL iom_swap( cwxios_context ) |
---|
| 1196 | CALL iom_rstput( kt, nitrst, numrow, 'en' , en , ldxios = lwxios ) |
---|
| 1197 | CALL iom_rstput( kt, nitrst, numrow, 'avt_k' , avt_k , ldxios = lwxios ) |
---|
| 1198 | CALL iom_rstput( kt, nitrst, numrow, 'avm_k' , avm_k , ldxios = lwxios ) |
---|
| 1199 | CALL iom_rstput( kt, nitrst, numrow, 'hmxl_n', hmxl_n, ldxios = lwxios ) |
---|
| 1200 | IF( lwxios ) CALL iom_swap( cxios_context ) |
---|
[2452] | 1201 | ! |
---|
| 1202 | ENDIF |
---|
| 1203 | ! |
---|
[2048] | 1204 | END SUBROUTINE gls_rst |
---|
| 1205 | |
---|
| 1206 | !!====================================================================== |
---|
| 1207 | END MODULE zdfgls |
---|
[2397] | 1208 | |
---|