[1531] | 1 | MODULE zdftke |
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[1239] | 2 | !!====================================================================== |
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[1531] | 3 | !! *** MODULE zdftke *** |
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[1239] | 4 | !! Ocean physics: vertical mixing coefficient computed from the tke |
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| 5 | !! turbulent closure parameterization |
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| 6 | !!===================================================================== |
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[1492] | 7 | !! History : OPA ! 1991-03 (b. blanke) Original code |
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| 8 | !! 7.0 ! 1991-11 (G. Madec) bug fix |
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| 9 | !! 7.1 ! 1992-10 (G. Madec) new mixing length and eav |
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| 10 | !! 7.2 ! 1993-03 (M. Guyon) symetrical conditions |
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| 11 | !! 7.3 ! 1994-08 (G. Madec, M. Imbard) nn_pdl flag |
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| 12 | !! 7.5 ! 1996-01 (G. Madec) s-coordinates |
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| 13 | !! 8.0 ! 1997-07 (G. Madec) lbc |
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| 14 | !! 8.1 ! 1999-01 (E. Stretta) new option for the mixing length |
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| 15 | !! NEMO 1.0 ! 2002-06 (G. Madec) add tke_init routine |
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| 16 | !! - ! 2004-10 (C. Ethe ) 1D configuration |
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| 17 | !! 2.0 ! 2006-07 (S. Masson) distributed restart using iom |
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| 18 | !! 3.0 ! 2008-05 (C. Ethe, G.Madec) : update TKE physics: |
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| 19 | !! ! - tke penetration (wind steering) |
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| 20 | !! ! - suface condition for tke & mixing length |
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| 21 | !! ! - Langmuir cells |
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| 22 | !! - ! 2008-05 (J.-M. Molines, G. Madec) 2D form of avtb |
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| 23 | !! - ! 2008-06 (G. Madec) style + DOCTOR name for namelist parameters |
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| 24 | !! - ! 2008-12 (G. Reffray) stable discretization of the production term |
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| 25 | !! 3.2 ! 2009-06 (G. Madec, S. Masson) TKE restart compatible with key_cpl |
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| 26 | !! ! + cleaning of the parameters + bugs correction |
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[2528] | 27 | !! 3.3 ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase |
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[5120] | 28 | !! 3.6 ! 2014-11 (P. Mathiot) add ice shelf capability |
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[9019] | 29 | !! 4.0 ! 2017-04 (G. Madec) remove CPP ddm key & avm at t-point only |
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| 30 | !! - ! 2017-05 (G. Madec) add top/bottom friction as boundary condition (ln_drg) |
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[1239] | 31 | !!---------------------------------------------------------------------- |
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[9019] | 32 | |
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[1239] | 33 | !!---------------------------------------------------------------------- |
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[3625] | 34 | !! zdf_tke : update momentum and tracer Kz from a tke scheme |
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| 35 | !! tke_tke : tke time stepping: update tke at now time step (en) |
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| 36 | !! tke_avn : compute mixing length scale and deduce avm and avt |
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| 37 | !! zdf_tke_init : initialization, namelist read, and parameters control |
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| 38 | !! tke_rst : read/write tke restart in ocean restart file |
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[1239] | 39 | !!---------------------------------------------------------------------- |
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[2528] | 40 | USE oce ! ocean: dynamics and active tracers variables |
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| 41 | USE phycst ! physical constants |
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| 42 | USE dom_oce ! domain: ocean |
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| 43 | USE domvvl ! domain: variable volume layer |
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[1492] | 44 | USE sbc_oce ! surface boundary condition: ocean |
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[9019] | 45 | USE zdfdrg ! vertical physics: top/bottom drag coef. |
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[2528] | 46 | USE zdfmxl ! vertical physics: mixed layer |
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[13007] | 47 | #if defined key_si3 |
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| 48 | USE ice, ONLY: hm_i, h_i |
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| 49 | #endif |
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| 50 | #if defined key_cice |
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| 51 | USE sbc_ice, ONLY: h_i |
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| 52 | #endif |
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[9019] | 53 | ! |
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[1492] | 54 | USE in_out_manager ! I/O manager |
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| 55 | USE iom ! I/O manager library |
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[2715] | 56 | USE lib_mpp ! MPP library |
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[9019] | 57 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 58 | USE prtctl ! Print control |
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[3625] | 59 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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[1239] | 60 | |
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| 61 | IMPLICIT NONE |
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| 62 | PRIVATE |
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| 63 | |
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[2528] | 64 | PUBLIC zdf_tke ! routine called in step module |
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| 65 | PUBLIC zdf_tke_init ! routine called in opa module |
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| 66 | PUBLIC tke_rst ! routine called in step module |
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[1239] | 67 | |
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[4147] | 68 | ! !!** Namelist namzdf_tke ** |
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| 69 | LOGICAL :: ln_mxl0 ! mixing length scale surface value as function of wind stress or not |
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| 70 | INTEGER :: nn_mxl ! type of mixing length (=0/1/2/3) |
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| 71 | REAL(wp) :: rn_mxl0 ! surface min value of mixing length (kappa*z_o=0.4*0.1 m) [m] |
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[13012] | 72 | INTEGER :: nn_mxlice ! type of scaling under sea-ice |
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| 73 | REAL(wp) :: rn_mxlice ! max constant ice thickness value when scaling under sea-ice ( nn_mxlice=1) |
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[4147] | 74 | INTEGER :: nn_pdl ! Prandtl number or not (ratio avt/avm) (=0/1) |
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| 75 | REAL(wp) :: rn_ediff ! coefficient for avt: avt=rn_ediff*mxl*sqrt(e) |
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| 76 | REAL(wp) :: rn_ediss ! coefficient of the Kolmogoroff dissipation |
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| 77 | REAL(wp) :: rn_ebb ! coefficient of the surface input of tke |
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| 78 | REAL(wp) :: rn_emin ! minimum value of tke [m2/s2] |
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| 79 | REAL(wp) :: rn_emin0 ! surface minimum value of tke [m2/s2] |
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| 80 | REAL(wp) :: rn_bshear ! background shear (>0) currently a numerical threshold (do not change it) |
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[9019] | 81 | LOGICAL :: ln_drg ! top/bottom friction forcing flag |
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[4147] | 82 | INTEGER :: nn_etau ! type of depth penetration of surface tke (=0/1/2/3) |
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[9019] | 83 | INTEGER :: nn_htau ! type of tke profile of penetration (=0/1) |
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| 84 | REAL(wp) :: rn_efr ! fraction of TKE surface value which penetrates in the ocean |
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[9546] | 85 | REAL(wp) :: rn_eice ! =0 ON below sea-ice, =4 OFF when ice fraction > 1/4 |
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[4147] | 86 | LOGICAL :: ln_lc ! Langmuir cells (LC) as a source term of TKE or not |
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[9019] | 87 | REAL(wp) :: rn_lc ! coef to compute vertical velocity of Langmuir cells |
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[1239] | 88 | |
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[4147] | 89 | REAL(wp) :: ri_cri ! critic Richardson number (deduced from rn_ediff and rn_ediss values) |
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| 90 | REAL(wp) :: rmxl_min ! minimum mixing length value (deduced from rn_ediff and rn_emin values) [m] |
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[2528] | 91 | REAL(wp) :: rhftau_add = 1.e-3_wp ! add offset applied to HF part of taum (nn_etau=3) |
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| 92 | REAL(wp) :: rhftau_scl = 1.0_wp ! scale factor applied to HF part of taum (nn_etau=3) |
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[1239] | 93 | |
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[9019] | 94 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: htau ! depth of tke penetration (nn_htau) |
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| 95 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: dissl ! now mixing lenght of dissipation |
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| 96 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: apdlr ! now mixing lenght of dissipation |
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[1492] | 97 | |
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[1239] | 98 | !! * Substitutions |
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[12377] | 99 | # include "do_loop_substitute.h90" |
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[13237] | 100 | # include "domzgr_substitute.h90" |
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[1239] | 101 | !!---------------------------------------------------------------------- |
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[9598] | 102 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[2528] | 103 | !! $Id$ |
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[10068] | 104 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[1239] | 105 | !!---------------------------------------------------------------------- |
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| 106 | CONTAINS |
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| 107 | |
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[2715] | 108 | INTEGER FUNCTION zdf_tke_alloc() |
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| 109 | !!---------------------------------------------------------------------- |
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| 110 | !! *** FUNCTION zdf_tke_alloc *** |
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| 111 | !!---------------------------------------------------------------------- |
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[9019] | 112 | ALLOCATE( htau(jpi,jpj) , dissl(jpi,jpj,jpk) , apdlr(jpi,jpj,jpk) , STAT= zdf_tke_alloc ) |
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| 113 | ! |
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[10425] | 114 | CALL mpp_sum ( 'zdftke', zdf_tke_alloc ) |
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| 115 | IF( zdf_tke_alloc /= 0 ) CALL ctl_stop( 'STOP', 'zdf_tke_alloc: failed to allocate arrays' ) |
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[2715] | 116 | ! |
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| 117 | END FUNCTION zdf_tke_alloc |
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| 118 | |
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| 119 | |
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[12377] | 120 | SUBROUTINE zdf_tke( kt, Kbb, Kmm, p_sh2, p_avm, p_avt ) |
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[1239] | 121 | !!---------------------------------------------------------------------- |
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[1531] | 122 | !! *** ROUTINE zdf_tke *** |
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[1239] | 123 | !! |
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| 124 | !! ** Purpose : Compute the vertical eddy viscosity and diffusivity |
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[1492] | 125 | !! coefficients using a turbulent closure scheme (TKE). |
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[1239] | 126 | !! |
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[1492] | 127 | !! ** Method : The time evolution of the turbulent kinetic energy (tke) |
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| 128 | !! is computed from a prognostic equation : |
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| 129 | !! d(en)/dt = avm (d(u)/dz)**2 ! shear production |
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| 130 | !! + d( avm d(en)/dz )/dz ! diffusion of tke |
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| 131 | !! + avt N^2 ! stratif. destruc. |
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| 132 | !! - rn_ediss / emxl en**(2/3) ! Kolmogoroff dissipation |
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[1239] | 133 | !! with the boundary conditions: |
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[1695] | 134 | !! surface: en = max( rn_emin0, rn_ebb * taum ) |
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[1239] | 135 | !! bottom : en = rn_emin |
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[1492] | 136 | !! The associated critical Richardson number is: ri_cri = 2/(2+rn_ediss/rn_ediff) |
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| 137 | !! |
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| 138 | !! The now Turbulent kinetic energy is computed using the following |
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| 139 | !! time stepping: implicit for vertical diffusion term, linearized semi |
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| 140 | !! implicit for kolmogoroff dissipation term, and explicit forward for |
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| 141 | !! both buoyancy and shear production terms. Therefore a tridiagonal |
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| 142 | !! linear system is solved. Note that buoyancy and shear terms are |
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| 143 | !! discretized in a energy conserving form (Bruchard 2002). |
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| 144 | !! |
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| 145 | !! The dissipative and mixing length scale are computed from en and |
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| 146 | !! the stratification (see tke_avn) |
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| 147 | !! |
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| 148 | !! The now vertical eddy vicosity and diffusivity coefficients are |
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| 149 | !! given by: |
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| 150 | !! avm = max( avtb, rn_ediff * zmxlm * en^1/2 ) |
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| 151 | !! avt = max( avmb, pdl * avm ) |
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[1239] | 152 | !! eav = max( avmb, avm ) |
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[1492] | 153 | !! where pdl, the inverse of the Prandtl number is 1 if nn_pdl=0 and |
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| 154 | !! given by an empirical funtion of the localRichardson number if nn_pdl=1 |
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[1239] | 155 | !! |
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| 156 | !! ** Action : compute en (now turbulent kinetic energy) |
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[9019] | 157 | !! update avt, avm (before vertical eddy coef.) |
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[1239] | 158 | !! |
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| 159 | !! References : Gaspar et al., JGR, 1990, |
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| 160 | !! Blanke and Delecluse, JPO, 1991 |
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| 161 | !! Mellor and Blumberg, JPO 2004 |
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| 162 | !! Axell, JGR, 2002 |
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[1492] | 163 | !! Bruchard OM 2002 |
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[1239] | 164 | !!---------------------------------------------------------------------- |
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[9019] | 165 | INTEGER , INTENT(in ) :: kt ! ocean time step |
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[12377] | 166 | INTEGER , INTENT(in ) :: Kbb, Kmm ! ocean time level indices |
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[9019] | 167 | REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: p_sh2 ! shear production term |
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| 168 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: p_avm, p_avt ! momentum and tracer Kz (w-points) |
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[1492] | 169 | !!---------------------------------------------------------------------- |
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[1481] | 170 | ! |
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[12377] | 171 | CALL tke_tke( Kbb, Kmm, p_sh2, p_avm, p_avt ) ! now tke (en) |
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[5656] | 172 | ! |
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[12377] | 173 | CALL tke_avn( Kbb, Kmm, p_avm, p_avt ) ! now avt, avm, dissl |
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[3632] | 174 | ! |
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[5656] | 175 | END SUBROUTINE zdf_tke |
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[1239] | 176 | |
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[1492] | 177 | |
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[12377] | 178 | SUBROUTINE tke_tke( Kbb, Kmm, p_sh2, p_avm, p_avt ) |
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[1239] | 179 | !!---------------------------------------------------------------------- |
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[1492] | 180 | !! *** ROUTINE tke_tke *** |
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| 181 | !! |
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| 182 | !! ** Purpose : Compute the now Turbulente Kinetic Energy (TKE) |
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| 183 | !! |
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| 184 | !! ** Method : - TKE surface boundary condition |
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[2528] | 185 | !! - source term due to Langmuir cells (Axell JGR 2002) (ln_lc=T) |
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[9019] | 186 | !! - source term due to shear (= Kz dz[Ub] * dz[Un] ) |
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[1492] | 187 | !! - Now TKE : resolution of the TKE equation by inverting |
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| 188 | !! a tridiagonal linear system by a "methode de chasse" |
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| 189 | !! - increase TKE due to surface and internal wave breaking |
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[9019] | 190 | !! NB: when sea-ice is present, both LC parameterization |
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| 191 | !! and TKE penetration are turned off when the ice fraction |
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| 192 | !! is smaller than 0.25 |
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[1492] | 193 | !! |
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| 194 | !! ** Action : - en : now turbulent kinetic energy) |
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[1239] | 195 | !! --------------------------------------------------------------------- |
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[9019] | 196 | USE zdf_oce , ONLY : en ! ocean vertical physics |
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| 197 | !! |
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[12377] | 198 | INTEGER , INTENT(in ) :: Kbb, Kmm ! ocean time level indices |
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[9019] | 199 | REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: p_sh2 ! shear production term |
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| 200 | REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: p_avm, p_avt ! vertical eddy viscosity & diffusivity (w-points) |
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| 201 | ! |
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| 202 | INTEGER :: ji, jj, jk ! dummy loop arguments |
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| 203 | REAL(wp) :: zetop, zebot, zmsku, zmskv ! local scalars |
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| 204 | REAL(wp) :: zrhoa = 1.22 ! Air density kg/m3 |
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| 205 | REAL(wp) :: zcdrag = 1.5e-3 ! drag coefficient |
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| 206 | REAL(wp) :: zbbrau, zri ! local scalars |
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| 207 | REAL(wp) :: zfact1, zfact2, zfact3 ! - - |
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| 208 | REAL(wp) :: ztx2 , zty2 , zcof ! - - |
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| 209 | REAL(wp) :: ztau , zdif ! - - |
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| 210 | REAL(wp) :: zus , zwlc , zind ! - - |
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| 211 | REAL(wp) :: zzd_up, zzd_lw ! - - |
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| 212 | INTEGER , DIMENSION(jpi,jpj) :: imlc |
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[10425] | 213 | REAL(wp), DIMENSION(jpi,jpj) :: zhlc, zfr_i |
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[9019] | 214 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zpelc, zdiag, zd_up, zd_lw |
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[1239] | 215 | !!-------------------------------------------------------------------- |
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[1492] | 216 | ! |
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[12489] | 217 | zbbrau = rn_ebb / rho0 ! Local constant initialisation |
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| 218 | zfact1 = -.5_wp * rn_Dt |
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| 219 | zfact2 = 1.5_wp * rn_Dt * rn_ediss |
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[2528] | 220 | zfact3 = 0.5_wp * rn_ediss |
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[1492] | 221 | ! |
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| 222 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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[9019] | 223 | ! ! Surface/top/bottom boundary condition on tke |
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[1492] | 224 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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[12698] | 225 | ! |
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[12377] | 226 | DO_2D_00_00 |
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| 227 | en(ji,jj,1) = MAX( rn_emin0, zbbrau * taum(ji,jj) ) * tmask(ji,jj,1) |
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| 228 | END_2D |
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[9019] | 229 | ! |
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[1492] | 230 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 231 | ! ! Bottom boundary condition on tke |
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| 232 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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[1719] | 233 | ! |
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[12489] | 234 | ! en(bot) = (ebb0/rho0)*0.5*sqrt(u_botfr^2+v_botfr^2) (min value rn_emin) |
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[9019] | 235 | ! where ebb0 does not includes surface wave enhancement (i.e. ebb0=3.75) |
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| 236 | ! Note that stress averaged is done using an wet-only calculation of u and v at t-point like in zdfsh2 |
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[1492] | 237 | ! |
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[9019] | 238 | IF( ln_drg ) THEN !== friction used as top/bottom boundary condition on TKE |
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| 239 | ! |
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[12377] | 240 | DO_2D_00_00 |
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| 241 | zmsku = ( 2. - umask(ji-1,jj,mbkt(ji,jj)) * umask(ji,jj,mbkt(ji,jj)) ) |
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| 242 | zmskv = ( 2. - vmask(ji,jj-1,mbkt(ji,jj)) * vmask(ji,jj,mbkt(ji,jj)) ) |
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[12489] | 243 | ! ! where 0.001875 = (rn_ebb0/rho0) * 0.5 = 3.75*0.5/1000. (CAUTION CdU<0) |
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[12377] | 244 | zebot = - 0.001875_wp * 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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| 245 | & + ( zmskv*( vv(ji,jj,mbkt(ji,jj),Kbb)+vv(ji,jj-1,mbkt(ji,jj),Kbb) ) )**2 ) |
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| 246 | en(ji,jj,mbkt(ji,jj)+1) = MAX( zebot, rn_emin ) * ssmask(ji,jj) |
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| 247 | END_2D |
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[9019] | 248 | IF( ln_isfcav ) THEN ! top friction |
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[12377] | 249 | DO_2D_00_00 |
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| 250 | zmsku = ( 2. - umask(ji-1,jj,mikt(ji,jj)) * umask(ji,jj,mikt(ji,jj)) ) |
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| 251 | zmskv = ( 2. - vmask(ji,jj-1,mikt(ji,jj)) * vmask(ji,jj,mikt(ji,jj)) ) |
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[12489] | 252 | ! ! where 0.001875 = (rn_ebb0/rho0) * 0.5 = 3.75*0.5/1000. (CAUTION CdU<0) |
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[12377] | 253 | zetop = - 0.001875_wp * 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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| 254 | & + ( zmskv*( vv(ji,jj,mikt(ji,jj),Kbb)+vv(ji,jj-1,mikt(ji,jj),Kbb) ) )**2 ) |
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[12702] | 255 | ! (1._wp - tmask(ji,jj,1)) * ssmask(ji,jj) = 1 where ice shelves are present |
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| 256 | en(ji,jj,mikt(ji,jj)) = en(ji,jj,1) * tmask(ji,jj,1) & |
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| 257 | & + MAX( zetop, rn_emin ) * (1._wp - tmask(ji,jj,1)) * ssmask(ji,jj) |
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[12377] | 258 | END_2D |
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[9019] | 259 | ENDIF |
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| 260 | ! |
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| 261 | ENDIF |
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| 262 | ! |
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[1492] | 263 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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[9019] | 264 | IF( ln_lc ) THEN ! Langmuir circulation source term added to tke ! (Axell JGR 2002) |
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[1492] | 265 | ! !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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[1239] | 266 | ! |
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[1492] | 267 | ! !* total energy produce by LC : cumulative sum over jk |
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[12377] | 268 | zpelc(:,:,1) = MAX( rn2b(:,:,1), 0._wp ) * gdepw(:,:,1,Kmm) * e3w(:,:,1,Kmm) |
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[1239] | 269 | DO jk = 2, jpk |
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[13237] | 270 | zpelc(:,:,jk) = zpelc(:,:,jk-1) + & |
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| 271 | & MAX( rn2b(:,:,jk), 0._wp ) * gdepw(:,:,jk,Kmm) * e3w(:,:,jk,Kmm) |
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[1239] | 272 | END DO |
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[1492] | 273 | ! !* finite Langmuir Circulation depth |
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[1705] | 274 | zcof = 0.5 * 0.016 * 0.016 / ( zrhoa * zcdrag ) |
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[7753] | 275 | imlc(:,:) = mbkt(:,:) + 1 ! Initialization to the number of w ocean point (=2 over land) |
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[12377] | 276 | DO_3DS_11_11( jpkm1, 2, -1 ) |
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| 277 | zus = zcof * taum(ji,jj) |
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| 278 | IF( zpelc(ji,jj,jk) > zus ) imlc(ji,jj) = jk |
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| 279 | END_3D |
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[1492] | 280 | ! ! finite LC depth |
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[12377] | 281 | DO_2D_11_11 |
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| 282 | zhlc(ji,jj) = gdepw(ji,jj,imlc(ji,jj),Kmm) |
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| 283 | END_2D |
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[1705] | 284 | zcof = 0.016 / SQRT( zrhoa * zcdrag ) |
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[12377] | 285 | DO_2D_00_00 |
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| 286 | zus = zcof * SQRT( taum(ji,jj) ) ! Stokes drift |
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| 287 | zfr_i(ji,jj) = ( 1._wp - 4._wp * fr_i(ji,jj) ) * zus * zus * zus * tmask(ji,jj,1) ! zus > 0. ok |
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| 288 | IF (zfr_i(ji,jj) < 0. ) zfr_i(ji,jj) = 0. |
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| 289 | END_2D |
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| 290 | DO_3D_00_00( 2, jpkm1 ) |
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| 291 | IF ( zfr_i(ji,jj) /= 0. ) THEN |
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| 292 | ! vertical velocity due to LC |
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| 293 | IF ( gdepw(ji,jj,jk,Kmm) - zhlc(ji,jj) < 0 .AND. wmask(ji,jj,jk) /= 0. ) THEN |
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| 294 | ! ! vertical velocity due to LC |
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| 295 | zwlc = rn_lc * SIN( rpi * gdepw(ji,jj,jk,Kmm) / zhlc(ji,jj) ) ! warning: optimization: zus^3 is in zfr_i |
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| 296 | ! ! TKE Langmuir circulation source term |
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[12489] | 297 | en(ji,jj,jk) = en(ji,jj,jk) + rn_Dt * zfr_i(ji,jj) * ( zwlc * zwlc * zwlc ) / zhlc(ji,jj) |
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[12377] | 298 | ENDIF |
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| 299 | ENDIF |
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| 300 | END_3D |
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[1239] | 301 | ! |
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| 302 | ENDIF |
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[1492] | 303 | ! |
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| 304 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 305 | ! ! Now Turbulent kinetic energy (output in en) |
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| 306 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 307 | ! ! Resolution of a tridiagonal linear system by a "methode de chasse" |
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| 308 | ! ! computation from level 2 to jpkm1 (e(1) already computed and e(jpk)=0 ). |
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| 309 | ! ! zdiag : diagonal zd_up : upper diagonal zd_lw : lower diagonal |
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| 310 | ! |
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[9019] | 311 | IF( nn_pdl == 1 ) THEN !* Prandtl number = F( Ri ) |
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[12377] | 312 | DO_3D_00_00( 2, jpkm1 ) |
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| 313 | ! ! local Richardson number |
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[13226] | 314 | IF (rn2b(ji,jj,jk) <= 0.0_wp) then |
---|
| 315 | zri = 0.0_wp |
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| 316 | ELSE |
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| 317 | zri = rn2b(ji,jj,jk) * p_avm(ji,jj,jk) / ( p_sh2(ji,jj,jk) + rn_bshear ) |
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| 318 | ENDIF |
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[12377] | 319 | ! ! inverse of Prandtl number |
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| 320 | apdlr(ji,jj,jk) = MAX( 0.1_wp, ri_cri / MAX( ri_cri , zri ) ) |
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| 321 | END_3D |
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[5656] | 322 | ENDIF |
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[5836] | 323 | ! |
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[12377] | 324 | DO_3D_00_00( 2, jpkm1 ) |
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| 325 | zcof = zfact1 * tmask(ji,jj,jk) |
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| 326 | ! ! A minimum of 2.e-5 m2/s is imposed on TKE vertical |
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| 327 | ! ! eddy coefficient (ensure numerical stability) |
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| 328 | zzd_up = zcof * MAX( p_avm(ji,jj,jk+1) + p_avm(ji,jj,jk ) , 2.e-5_wp ) & ! upper diagonal |
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[13237] | 329 | & / ( e3t(ji,jj,jk ,Kmm) & |
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| 330 | & * e3w(ji,jj,jk ,Kmm) ) |
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[12377] | 331 | zzd_lw = zcof * MAX( p_avm(ji,jj,jk ) + p_avm(ji,jj,jk-1) , 2.e-5_wp ) & ! lower diagonal |
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[13237] | 332 | & / ( e3t(ji,jj,jk-1,Kmm) & |
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| 333 | & * e3w(ji,jj,jk ,Kmm) ) |
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[12377] | 334 | ! |
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| 335 | zd_up(ji,jj,jk) = zzd_up ! Matrix (zdiag, zd_up, zd_lw) |
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| 336 | zd_lw(ji,jj,jk) = zzd_lw |
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| 337 | zdiag(ji,jj,jk) = 1._wp - zzd_lw - zzd_up + zfact2 * dissl(ji,jj,jk) * wmask(ji,jj,jk) |
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| 338 | ! |
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| 339 | ! ! right hand side in en |
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[12489] | 340 | en(ji,jj,jk) = en(ji,jj,jk) + rn_Dt * ( p_sh2(ji,jj,jk) & ! shear |
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[12377] | 341 | & - p_avt(ji,jj,jk) * rn2(ji,jj,jk) & ! stratification |
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| 342 | & + zfact3 * dissl(ji,jj,jk) * en(ji,jj,jk) & ! dissipation |
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| 343 | & ) * wmask(ji,jj,jk) |
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| 344 | END_3D |
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[5120] | 345 | ! !* Matrix inversion from level 2 (tke prescribed at level 1) |
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[12377] | 346 | DO_3D_00_00( 3, jpkm1 ) |
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| 347 | zdiag(ji,jj,jk) = zdiag(ji,jj,jk) - zd_lw(ji,jj,jk) * zd_up(ji,jj,jk-1) / zdiag(ji,jj,jk-1) |
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| 348 | END_3D |
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| 349 | DO_2D_00_00 |
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| 350 | zd_lw(ji,jj,2) = en(ji,jj,2) - zd_lw(ji,jj,2) * en(ji,jj,1) ! Surface boudary conditions on tke |
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| 351 | END_2D |
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| 352 | DO_3D_00_00( 3, jpkm1 ) |
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| 353 | 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) |
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| 354 | END_3D |
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| 355 | DO_2D_00_00 |
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| 356 | en(ji,jj,jpkm1) = zd_lw(ji,jj,jpkm1) / zdiag(ji,jj,jpkm1) |
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| 357 | END_2D |
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| 358 | DO_3DS_00_00( jpk-2, 2, -1 ) |
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| 359 | en(ji,jj,jk) = ( zd_lw(ji,jj,jk) - zd_up(ji,jj,jk) * en(ji,jj,jk+1) ) / zdiag(ji,jj,jk) |
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| 360 | END_3D |
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| 361 | DO_3D_00_00( 2, jpkm1 ) |
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| 362 | en(ji,jj,jk) = MAX( en(ji,jj,jk), rn_emin ) * wmask(ji,jj,jk) |
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| 363 | END_3D |
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[9019] | 364 | ! |
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[1492] | 365 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 366 | ! ! TKE due to surface and internal wave breaking |
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| 367 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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[6140] | 368 | !!gm BUG : in the exp remove the depth of ssh !!! |
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[12377] | 369 | !!gm i.e. use gde3w in argument (gdepw(:,:,:,Kmm)) |
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[6140] | 370 | |
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| 371 | |
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[2528] | 372 | IF( nn_etau == 1 ) THEN !* penetration below the mixed layer (rn_efr fraction) |
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[12377] | 373 | DO_3D_00_00( 2, jpkm1 ) |
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| 374 | en(ji,jj,jk) = en(ji,jj,jk) + rn_efr * en(ji,jj,1) * EXP( -gdepw(ji,jj,jk,Kmm) / htau(ji,jj) ) & |
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| 375 | & * MAX(0.,1._wp - rn_eice *fr_i(ji,jj) ) * wmask(ji,jj,jk) * tmask(ji,jj,1) |
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| 376 | END_3D |
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[2528] | 377 | ELSEIF( nn_etau == 2 ) THEN !* act only at the base of the mixed layer (jk=nmln) (rn_efr fraction) |
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[12377] | 378 | DO_2D_00_00 |
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| 379 | jk = nmln(ji,jj) |
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| 380 | en(ji,jj,jk) = en(ji,jj,jk) + rn_efr * en(ji,jj,1) * EXP( -gdepw(ji,jj,jk,Kmm) / htau(ji,jj) ) & |
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| 381 | & * MAX(0.,1._wp - rn_eice *fr_i(ji,jj) ) * wmask(ji,jj,jk) * tmask(ji,jj,1) |
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| 382 | END_2D |
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[2528] | 383 | ELSEIF( nn_etau == 3 ) THEN !* penetration belox the mixed layer (HF variability) |
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[12377] | 384 | DO_3D_00_00( 2, jpkm1 ) |
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| 385 | ztx2 = utau(ji-1,jj ) + utau(ji,jj) |
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| 386 | zty2 = vtau(ji ,jj-1) + vtau(ji,jj) |
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| 387 | ztau = 0.5_wp * SQRT( ztx2 * ztx2 + zty2 * zty2 ) * tmask(ji,jj,1) ! module of the mean stress |
---|
| 388 | zdif = taum(ji,jj) - ztau ! mean of modulus - modulus of the mean |
---|
| 389 | zdif = rhftau_scl * MAX( 0._wp, zdif + rhftau_add ) ! apply some modifications... |
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| 390 | en(ji,jj,jk) = en(ji,jj,jk) + zbbrau * zdif * EXP( -gdepw(ji,jj,jk,Kmm) / htau(ji,jj) ) & |
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| 391 | & * MAX(0.,1._wp - rn_eice *fr_i(ji,jj) ) * wmask(ji,jj,jk) * tmask(ji,jj,1) |
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| 392 | END_3D |
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[1239] | 393 | ENDIF |
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[1492] | 394 | ! |
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[1239] | 395 | END SUBROUTINE tke_tke |
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| 396 | |
---|
[1492] | 397 | |
---|
[12377] | 398 | SUBROUTINE tke_avn( Kbb, Kmm, p_avm, p_avt ) |
---|
[1239] | 399 | !!---------------------------------------------------------------------- |
---|
[1492] | 400 | !! *** ROUTINE tke_avn *** |
---|
[1239] | 401 | !! |
---|
[1492] | 402 | !! ** Purpose : Compute the vertical eddy viscosity and diffusivity |
---|
| 403 | !! |
---|
| 404 | !! ** Method : At this stage, en, the now TKE, is known (computed in |
---|
| 405 | !! the tke_tke routine). First, the now mixing lenth is |
---|
| 406 | !! computed from en and the strafification (N^2), then the mixings |
---|
| 407 | !! coefficients are computed. |
---|
| 408 | !! - Mixing length : a first evaluation of the mixing lengh |
---|
| 409 | !! scales is: |
---|
| 410 | !! mxl = sqrt(2*en) / N |
---|
| 411 | !! where N is the brunt-vaisala frequency, with a minimum value set |
---|
[2528] | 412 | !! to rmxl_min (rn_mxl0) in the interior (surface) ocean. |
---|
[1492] | 413 | !! The mixing and dissipative length scale are bound as follow : |
---|
| 414 | !! nn_mxl=0 : mxl bounded by the distance to surface and bottom. |
---|
| 415 | !! zmxld = zmxlm = mxl |
---|
| 416 | !! nn_mxl=1 : mxl bounded by the e3w and zmxld = zmxlm = mxl |
---|
| 417 | !! nn_mxl=2 : mxl bounded such that the vertical derivative of mxl is |
---|
| 418 | !! less than 1 (|d/dz(mxl)|<1) and zmxld = zmxlm = mxl |
---|
| 419 | !! nn_mxl=3 : mxl is bounded from the surface to the bottom usings |
---|
| 420 | !! |d/dz(xml)|<1 to obtain lup, and from the bottom to |
---|
| 421 | !! the surface to obtain ldown. the resulting length |
---|
| 422 | !! scales are: |
---|
| 423 | !! zmxld = sqrt( lup * ldown ) |
---|
| 424 | !! zmxlm = min ( lup , ldown ) |
---|
| 425 | !! - Vertical eddy viscosity and diffusivity: |
---|
| 426 | !! avm = max( avtb, rn_ediff * zmxlm * en^1/2 ) |
---|
| 427 | !! avt = max( avmb, pdlr * avm ) |
---|
| 428 | !! with pdlr=1 if nn_pdl=0, pdlr=1/pdl=F(Ri) otherwise. |
---|
| 429 | !! |
---|
[9019] | 430 | !! ** Action : - avt, avm : now vertical eddy diffusivity and viscosity (w-point) |
---|
[1239] | 431 | !!---------------------------------------------------------------------- |
---|
[9019] | 432 | USE zdf_oce , ONLY : en, avtb, avmb, avtb_2d ! ocean vertical physics |
---|
| 433 | !! |
---|
[12377] | 434 | INTEGER , INTENT(in ) :: Kbb, Kmm ! ocean time level indices |
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[9019] | 435 | REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_avm, p_avt ! vertical eddy viscosity & diffusivity (w-points) |
---|
| 436 | ! |
---|
[2715] | 437 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
[9019] | 438 | REAL(wp) :: zrn2, zraug, zcoef, zav ! local scalars |
---|
| 439 | REAL(wp) :: zdku, zdkv, zsqen ! - - |
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[13007] | 440 | REAL(wp) :: zemxl, zemlm, zemlp, zmaxice ! - - |
---|
[9019] | 441 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zmxlm, zmxld ! 3D workspace |
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[1239] | 442 | !!-------------------------------------------------------------------- |
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[3294] | 443 | ! |
---|
[1492] | 444 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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| 445 | ! ! Mixing length |
---|
| 446 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
| 447 | ! |
---|
| 448 | ! !* Buoyancy length scale: l=sqrt(2*e/n**2) |
---|
| 449 | ! |
---|
[5120] | 450 | ! initialisation of interior minimum value (avoid a 2d loop with mikt) |
---|
[7753] | 451 | zmxlm(:,:,:) = rmxl_min |
---|
| 452 | zmxld(:,:,:) = rmxl_min |
---|
[5120] | 453 | ! |
---|
[13012] | 454 | IF( ln_mxl0 ) THEN ! surface mixing length = F(stress) : l=vkarmn*2.e5*taum/(rho0*g) |
---|
[13007] | 455 | ! |
---|
[13012] | 456 | zraug = vkarmn * 2.e5_wp / ( rho0 * grav ) |
---|
[13007] | 457 | #if ! defined key_si3 && ! defined key_cice |
---|
[12377] | 458 | DO_2D_00_00 |
---|
[13007] | 459 | zmxlm(ji,jj,1) = zraug * taum(ji,jj) * tmask(ji,jj,1) |
---|
[12377] | 460 | END_2D |
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[13007] | 461 | #else |
---|
| 462 | SELECT CASE( nn_mxlice ) ! Type of scaling under sea-ice |
---|
| 463 | ! |
---|
| 464 | CASE( 0 ) ! No scaling under sea-ice |
---|
| 465 | DO_2D_00_00 |
---|
| 466 | zmxlm(ji,jj,1) = zraug * taum(ji,jj) * tmask(ji,jj,1) |
---|
| 467 | END_2D |
---|
| 468 | ! |
---|
| 469 | CASE( 1 ) ! scaling with constant sea-ice thickness |
---|
| 470 | DO_2D_00_00 |
---|
| 471 | zmxlm(ji,jj,1) = ( ( 1. - fr_i(ji,jj) ) * zraug * taum(ji,jj) + fr_i(ji,jj) * rn_mxlice ) * tmask(ji,jj,1) |
---|
| 472 | END_2D |
---|
| 473 | ! |
---|
| 474 | CASE( 2 ) ! scaling with mean sea-ice thickness |
---|
| 475 | DO_2D_00_00 |
---|
| 476 | #if defined key_si3 |
---|
| 477 | zmxlm(ji,jj,1) = ( ( 1. - fr_i(ji,jj) ) * zraug * taum(ji,jj) + fr_i(ji,jj) * hm_i(ji,jj) * 2. ) * tmask(ji,jj,1) |
---|
| 478 | #elif defined key_cice |
---|
| 479 | zmaxice = MAXVAL( h_i(ji,jj,:) ) |
---|
| 480 | zmxlm(ji,jj,1) = ( ( 1. - fr_i(ji,jj) ) * zraug * taum(ji,jj) + fr_i(ji,jj) * zmaxice ) * tmask(ji,jj,1) |
---|
| 481 | #endif |
---|
| 482 | END_2D |
---|
| 483 | ! |
---|
| 484 | CASE( 3 ) ! scaling with max sea-ice thickness |
---|
| 485 | DO_2D_00_00 |
---|
| 486 | zmaxice = MAXVAL( h_i(ji,jj,:) ) |
---|
| 487 | zmxlm(ji,jj,1) = ( ( 1. - fr_i(ji,jj) ) * zraug * taum(ji,jj) + fr_i(ji,jj) * zmaxice ) * tmask(ji,jj,1) |
---|
| 488 | END_2D |
---|
| 489 | ! |
---|
| 490 | END SELECT |
---|
| 491 | #endif |
---|
| 492 | ! |
---|
| 493 | DO_2D_00_00 |
---|
| 494 | zmxlm(ji,jj,1) = MAX( rn_mxl0, zmxlm(ji,jj,1) ) |
---|
| 495 | END_2D |
---|
| 496 | ! |
---|
| 497 | ELSE |
---|
[7753] | 498 | zmxlm(:,:,1) = rn_mxl0 |
---|
[1239] | 499 | ENDIF |
---|
[13007] | 500 | |
---|
[1239] | 501 | ! |
---|
[12377] | 502 | DO_3D_00_00( 2, jpkm1 ) |
---|
| 503 | zrn2 = MAX( rn2(ji,jj,jk), rsmall ) |
---|
| 504 | zmxlm(ji,jj,jk) = MAX( rmxl_min, SQRT( 2._wp * en(ji,jj,jk) / zrn2 ) ) |
---|
| 505 | END_3D |
---|
[1492] | 506 | ! |
---|
| 507 | ! !* Physical limits for the mixing length |
---|
| 508 | ! |
---|
[7753] | 509 | zmxld(:,:, 1 ) = zmxlm(:,:,1) ! surface set to the minimum value |
---|
| 510 | zmxld(:,:,jpk) = rmxl_min ! last level set to the minimum value |
---|
[1492] | 511 | ! |
---|
[1239] | 512 | SELECT CASE ( nn_mxl ) |
---|
| 513 | ! |
---|
[5836] | 514 | !!gm Not sure of that coding for ISF.... |
---|
[12377] | 515 | ! where wmask = 0 set zmxlm == e3w(:,:,:,Kmm) |
---|
[1239] | 516 | CASE ( 0 ) ! bounded by the distance to surface and bottom |
---|
[12377] | 517 | DO_3D_00_00( 2, jpkm1 ) |
---|
| 518 | zemxl = MIN( gdepw(ji,jj,jk,Kmm) - gdepw(ji,jj,mikt(ji,jj),Kmm), zmxlm(ji,jj,jk), & |
---|
| 519 | & gdepw(ji,jj,mbkt(ji,jj)+1,Kmm) - gdepw(ji,jj,jk,Kmm) ) |
---|
| 520 | ! wmask prevent zmxlm = 0 if jk = mikt(ji,jj) |
---|
[13237] | 521 | zmxlm(ji,jj,jk) = zemxl * wmask(ji,jj,jk) & |
---|
| 522 | & + MIN( zmxlm(ji,jj,jk) , e3w(ji,jj,jk,Kmm) ) * (1 - wmask(ji,jj,jk)) |
---|
| 523 | zmxld(ji,jj,jk) = zemxl * wmask(ji,jj,jk) & |
---|
| 524 | & + MIN( zmxlm(ji,jj,jk) , e3w(ji,jj,jk,Kmm) ) * (1 - wmask(ji,jj,jk)) |
---|
[12377] | 525 | END_3D |
---|
[1239] | 526 | ! |
---|
| 527 | CASE ( 1 ) ! bounded by the vertical scale factor |
---|
[12377] | 528 | DO_3D_00_00( 2, jpkm1 ) |
---|
| 529 | zemxl = MIN( e3w(ji,jj,jk,Kmm), zmxlm(ji,jj,jk) ) |
---|
| 530 | zmxlm(ji,jj,jk) = zemxl |
---|
| 531 | zmxld(ji,jj,jk) = zemxl |
---|
| 532 | END_3D |
---|
[1239] | 533 | ! |
---|
| 534 | CASE ( 2 ) ! |dk[xml]| bounded by e3t : |
---|
[12377] | 535 | DO_3D_00_00( 2, jpkm1 ) |
---|
[13237] | 536 | zmxlm(ji,jj,jk) = & |
---|
| 537 | & MIN( zmxlm(ji,jj,jk-1) + e3t(ji,jj,jk-1,Kmm), zmxlm(ji,jj,jk) ) |
---|
[12377] | 538 | END_3D |
---|
| 539 | DO_3DS_00_00( jpkm1, 2, -1 ) |
---|
| 540 | zemxl = MIN( zmxlm(ji,jj,jk+1) + e3t(ji,jj,jk+1,Kmm), zmxlm(ji,jj,jk) ) |
---|
| 541 | zmxlm(ji,jj,jk) = zemxl |
---|
| 542 | zmxld(ji,jj,jk) = zemxl |
---|
| 543 | END_3D |
---|
[1239] | 544 | ! |
---|
| 545 | CASE ( 3 ) ! lup and ldown, |dk[xml]| bounded by e3t : |
---|
[12377] | 546 | DO_3D_00_00( 2, jpkm1 ) |
---|
[13237] | 547 | zmxld(ji,jj,jk) = & |
---|
| 548 | & MIN( zmxld(ji,jj,jk-1) + e3t(ji,jj,jk-1,Kmm), zmxlm(ji,jj,jk) ) |
---|
[12377] | 549 | END_3D |
---|
| 550 | DO_3DS_00_00( jpkm1, 2, -1 ) |
---|
[13237] | 551 | zmxlm(ji,jj,jk) = & |
---|
| 552 | & MIN( zmxlm(ji,jj,jk+1) + e3t(ji,jj,jk+1,Kmm), zmxlm(ji,jj,jk) ) |
---|
[12377] | 553 | END_3D |
---|
| 554 | DO_3D_00_00( 2, jpkm1 ) |
---|
| 555 | zemlm = MIN ( zmxld(ji,jj,jk), zmxlm(ji,jj,jk) ) |
---|
| 556 | zemlp = SQRT( zmxld(ji,jj,jk) * zmxlm(ji,jj,jk) ) |
---|
| 557 | zmxlm(ji,jj,jk) = zemlm |
---|
| 558 | zmxld(ji,jj,jk) = zemlp |
---|
| 559 | END_3D |
---|
[1239] | 560 | ! |
---|
| 561 | END SELECT |
---|
[1492] | 562 | ! |
---|
| 563 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
[9019] | 564 | ! ! Vertical eddy viscosity and diffusivity (avm and avt) |
---|
[1492] | 565 | ! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
[12377] | 566 | DO_3D_00_00( 1, jpkm1 ) |
---|
| 567 | zsqen = SQRT( en(ji,jj,jk) ) |
---|
| 568 | zav = rn_ediff * zmxlm(ji,jj,jk) * zsqen |
---|
| 569 | p_avm(ji,jj,jk) = MAX( zav, avmb(jk) ) * wmask(ji,jj,jk) |
---|
| 570 | p_avt(ji,jj,jk) = MAX( zav, avtb_2d(ji,jj) * avtb(jk) ) * wmask(ji,jj,jk) |
---|
| 571 | dissl(ji,jj,jk) = zsqen / zmxld(ji,jj,jk) |
---|
| 572 | END_3D |
---|
[1492] | 573 | ! |
---|
| 574 | ! |
---|
| 575 | IF( nn_pdl == 1 ) THEN !* Prandtl number case: update avt |
---|
[12377] | 576 | DO_3D_00_00( 2, jpkm1 ) |
---|
[12698] | 577 | p_avt(ji,jj,jk) = MAX( apdlr(ji,jj,jk) * p_avt(ji,jj,jk), avtb_2d(ji,jj) * avtb(jk) ) * wmask(ji,jj,jk) |
---|
[12377] | 578 | END_3D |
---|
[1239] | 579 | ENDIF |
---|
[9019] | 580 | ! |
---|
[12377] | 581 | IF(sn_cfctl%l_prtctl) THEN |
---|
[9440] | 582 | CALL prt_ctl( tab3d_1=en , clinfo1=' tke - e: ', tab3d_2=p_avt, clinfo2=' t: ', kdim=jpk) |
---|
| 583 | CALL prt_ctl( tab3d_1=p_avm, clinfo1=' tke - m: ', kdim=jpk ) |
---|
[1239] | 584 | ENDIF |
---|
| 585 | ! |
---|
[1492] | 586 | END SUBROUTINE tke_avn |
---|
[1239] | 587 | |
---|
[1492] | 588 | |
---|
[12377] | 589 | SUBROUTINE zdf_tke_init( Kmm ) |
---|
[1239] | 590 | !!---------------------------------------------------------------------- |
---|
[2528] | 591 | !! *** ROUTINE zdf_tke_init *** |
---|
[1239] | 592 | !! |
---|
| 593 | !! ** Purpose : Initialization of the vertical eddy diffivity and |
---|
[1492] | 594 | !! viscosity when using a tke turbulent closure scheme |
---|
[1239] | 595 | !! |
---|
[1601] | 596 | !! ** Method : Read the namzdf_tke namelist and check the parameters |
---|
[1492] | 597 | !! called at the first timestep (nit000) |
---|
[1239] | 598 | !! |
---|
[1601] | 599 | !! ** input : Namlist namzdf_tke |
---|
[1239] | 600 | !! |
---|
| 601 | !! ** Action : Increase by 1 the nstop flag is setting problem encounter |
---|
| 602 | !!---------------------------------------------------------------------- |
---|
[9019] | 603 | USE zdf_oce , ONLY : ln_zdfiwm ! Internal Wave Mixing flag |
---|
| 604 | !! |
---|
[12377] | 605 | INTEGER, INTENT(in) :: Kmm ! time level index |
---|
| 606 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
| 607 | INTEGER :: ios |
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[1239] | 608 | !! |
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[13007] | 609 | NAMELIST/namzdf_tke/ rn_ediff, rn_ediss , rn_ebb , rn_emin , & |
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| 610 | & rn_emin0, rn_bshear, nn_mxl , ln_mxl0 , & |
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| 611 | & rn_mxl0 , nn_mxlice, rn_mxlice, & |
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| 612 | & nn_pdl , ln_drg , ln_lc , rn_lc, & |
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| 613 | & nn_etau , nn_htau , rn_efr , rn_eice |
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[1239] | 614 | !!---------------------------------------------------------------------- |
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[2715] | 615 | ! |
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[4147] | 616 | READ ( numnam_ref, namzdf_tke, IOSTAT = ios, ERR = 901) |
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[11536] | 617 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_tke in reference namelist' ) |
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[4147] | 618 | |
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| 619 | READ ( numnam_cfg, namzdf_tke, IOSTAT = ios, ERR = 902 ) |
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[11536] | 620 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namzdf_tke in configuration namelist' ) |
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[4624] | 621 | IF(lwm) WRITE ( numond, namzdf_tke ) |
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[2715] | 622 | ! |
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[2528] | 623 | ri_cri = 2._wp / ( 2._wp + rn_ediss / rn_ediff ) ! resulting critical Richardson number |
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[2715] | 624 | ! |
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[1492] | 625 | IF(lwp) THEN !* Control print |
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[1239] | 626 | WRITE(numout,*) |
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[2528] | 627 | WRITE(numout,*) 'zdf_tke_init : tke turbulent closure scheme - initialisation' |
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| 628 | WRITE(numout,*) '~~~~~~~~~~~~' |
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[1601] | 629 | WRITE(numout,*) ' Namelist namzdf_tke : set tke mixing parameters' |
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[1705] | 630 | WRITE(numout,*) ' coef. to compute avt rn_ediff = ', rn_ediff |
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| 631 | WRITE(numout,*) ' Kolmogoroff dissipation coef. rn_ediss = ', rn_ediss |
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| 632 | WRITE(numout,*) ' tke surface input coef. rn_ebb = ', rn_ebb |
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| 633 | WRITE(numout,*) ' minimum value of tke rn_emin = ', rn_emin |
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| 634 | WRITE(numout,*) ' surface minimum value of tke rn_emin0 = ', rn_emin0 |
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[9019] | 635 | WRITE(numout,*) ' prandl number flag nn_pdl = ', nn_pdl |
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[1705] | 636 | WRITE(numout,*) ' background shear (>0) rn_bshear = ', rn_bshear |
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| 637 | WRITE(numout,*) ' mixing length type nn_mxl = ', nn_mxl |
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[9019] | 638 | WRITE(numout,*) ' surface mixing length = F(stress) or not ln_mxl0 = ', ln_mxl0 |
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[13007] | 639 | IF( ln_mxl0 ) THEN |
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| 640 | WRITE(numout,*) ' type of scaling under sea-ice nn_mxlice = ', nn_mxlice |
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| 641 | IF( nn_mxlice == 1 ) & |
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| 642 | WRITE(numout,*) ' ice thickness when scaling under sea-ice rn_mxlice = ', rn_mxlice |
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| 643 | ENDIF |
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[9019] | 644 | WRITE(numout,*) ' surface mixing length minimum value rn_mxl0 = ', rn_mxl0 |
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| 645 | WRITE(numout,*) ' top/bottom friction forcing flag ln_drg = ', ln_drg |
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| 646 | WRITE(numout,*) ' Langmuir cells parametrization ln_lc = ', ln_lc |
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| 647 | WRITE(numout,*) ' coef to compute vertical velocity of LC rn_lc = ', rn_lc |
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[1705] | 648 | WRITE(numout,*) ' test param. to add tke induced by wind nn_etau = ', nn_etau |
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[9019] | 649 | WRITE(numout,*) ' type of tke penetration profile nn_htau = ', nn_htau |
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| 650 | WRITE(numout,*) ' fraction of TKE that penetrates rn_efr = ', rn_efr |
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[9546] | 651 | WRITE(numout,*) ' below sea-ice: =0 ON rn_eice = ', rn_eice |
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| 652 | WRITE(numout,*) ' =4 OFF when ice fraction > 1/4 ' |
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[9019] | 653 | IF( ln_drg ) THEN |
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[9169] | 654 | WRITE(numout,*) |
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[9019] | 655 | WRITE(numout,*) ' Namelist namdrg_top/_bot: used values:' |
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| 656 | WRITE(numout,*) ' top ocean cavity roughness (m) rn_z0(_top)= ', r_z0_top |
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| 657 | WRITE(numout,*) ' Bottom seafloor roughness (m) rn_z0(_bot)= ', r_z0_bot |
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| 658 | ENDIF |
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| 659 | WRITE(numout,*) |
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[9190] | 660 | WRITE(numout,*) ' ==>>> critical Richardson nb with your parameters ri_cri = ', ri_cri |
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[9019] | 661 | WRITE(numout,*) |
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[1239] | 662 | ENDIF |
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[2715] | 663 | ! |
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[9019] | 664 | IF( ln_zdfiwm ) THEN ! Internal wave-driven mixing |
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| 665 | rn_emin = 1.e-10_wp ! specific values of rn_emin & rmxl_min are used |
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| 666 | rmxl_min = 1.e-03_wp ! associated avt minimum = molecular salt diffusivity (10^-9 m2/s) |
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[9190] | 667 | IF(lwp) WRITE(numout,*) ' ==>>> Internal wave-driven mixing case: force rn_emin = 1.e-10 and rmxl_min = 1.e-3' |
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[9019] | 668 | ELSE ! standard case : associated avt minimum = molecular viscosity (10^-6 m2/s) |
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| 669 | rmxl_min = 1.e-6_wp / ( rn_ediff * SQRT( rn_emin ) ) ! resulting minimum length to recover molecular viscosity |
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[9190] | 670 | IF(lwp) WRITE(numout,*) ' ==>>> minimum mixing length with your parameters rmxl_min = ', rmxl_min |
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[9019] | 671 | ENDIF |
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| 672 | ! |
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[2715] | 673 | ! ! allocate tke arrays |
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| 674 | IF( zdf_tke_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'zdf_tke_init : unable to allocate arrays' ) |
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| 675 | ! |
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[1492] | 676 | ! !* Check of some namelist values |
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[4990] | 677 | IF( nn_mxl < 0 .OR. nn_mxl > 3 ) CALL ctl_stop( 'bad flag: nn_mxl is 0, 1 or 2 ' ) |
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| 678 | IF( nn_pdl < 0 .OR. nn_pdl > 1 ) CALL ctl_stop( 'bad flag: nn_pdl is 0 or 1 ' ) |
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| 679 | IF( nn_htau < 0 .OR. nn_htau > 1 ) CALL ctl_stop( 'bad flag: nn_htau is 0, 1 or 2 ' ) |
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[5407] | 680 | IF( nn_etau == 3 .AND. .NOT. ln_cpl ) CALL ctl_stop( 'nn_etau == 3 : HF taum only known in coupled mode' ) |
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[9019] | 681 | ! |
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[2528] | 682 | IF( ln_mxl0 ) THEN |
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[9169] | 683 | IF(lwp) WRITE(numout,*) |
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[9190] | 684 | IF(lwp) WRITE(numout,*) ' ==>>> use a surface mixing length = F(stress) : set rn_mxl0 = rmxl_min' |
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[2528] | 685 | rn_mxl0 = rmxl_min |
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| 686 | ENDIF |
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| 687 | |
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[12377] | 688 | IF( nn_etau == 2 ) CALL zdf_mxl( nit000, Kmm ) ! Initialization of nmln |
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[1239] | 689 | |
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[1492] | 690 | ! !* depth of penetration of surface tke |
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| 691 | IF( nn_etau /= 0 ) THEN |
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[1601] | 692 | SELECT CASE( nn_htau ) ! Choice of the depth of penetration |
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[2528] | 693 | CASE( 0 ) ! constant depth penetration (here 10 meters) |
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[7753] | 694 | htau(:,:) = 10._wp |
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[2528] | 695 | CASE( 1 ) ! F(latitude) : 0.5m to 30m poleward of 40 degrees |
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[7753] | 696 | htau(:,:) = MAX( 0.5_wp, MIN( 30._wp, 45._wp* ABS( SIN( rpi/180._wp * gphit(:,:) ) ) ) ) |
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[1492] | 697 | END SELECT |
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| 698 | ENDIF |
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[9019] | 699 | ! !* read or initialize all required files |
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| 700 | CALL tke_rst( nit000, 'READ' ) ! (en, avt_k, avm_k, dissl) |
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[1239] | 701 | ! |
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[9367] | 702 | IF( lwxios ) THEN |
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| 703 | CALL iom_set_rstw_var_active('en') |
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| 704 | CALL iom_set_rstw_var_active('avt_k') |
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| 705 | CALL iom_set_rstw_var_active('avm_k') |
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| 706 | CALL iom_set_rstw_var_active('dissl') |
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| 707 | ENDIF |
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[2528] | 708 | END SUBROUTINE zdf_tke_init |
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[1239] | 709 | |
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| 710 | |
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[1531] | 711 | SUBROUTINE tke_rst( kt, cdrw ) |
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[9019] | 712 | !!--------------------------------------------------------------------- |
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| 713 | !! *** ROUTINE tke_rst *** |
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| 714 | !! |
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| 715 | !! ** Purpose : Read or write TKE file (en) in restart file |
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| 716 | !! |
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| 717 | !! ** Method : use of IOM library |
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| 718 | !! if the restart does not contain TKE, en is either |
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| 719 | !! set to rn_emin or recomputed |
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| 720 | !!---------------------------------------------------------------------- |
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| 721 | USE zdf_oce , ONLY : en, avt_k, avm_k ! ocean vertical physics |
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| 722 | !! |
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| 723 | INTEGER , INTENT(in) :: kt ! ocean time-step |
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| 724 | CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag |
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| 725 | ! |
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| 726 | INTEGER :: jit, jk ! dummy loop indices |
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| 727 | INTEGER :: id1, id2, id3, id4 ! local integers |
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| 728 | !!---------------------------------------------------------------------- |
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| 729 | ! |
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| 730 | IF( TRIM(cdrw) == 'READ' ) THEN ! Read/initialise |
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| 731 | ! ! --------------- |
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| 732 | IF( ln_rstart ) THEN !* Read the restart file |
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| 733 | id1 = iom_varid( numror, 'en' , ldstop = .FALSE. ) |
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| 734 | id2 = iom_varid( numror, 'avt_k', ldstop = .FALSE. ) |
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| 735 | id3 = iom_varid( numror, 'avm_k', ldstop = .FALSE. ) |
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| 736 | id4 = iom_varid( numror, 'dissl', ldstop = .FALSE. ) |
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| 737 | ! |
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| 738 | IF( MIN( id1, id2, id3, id4 ) > 0 ) THEN ! fields exist |
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[9367] | 739 | CALL iom_get( numror, jpdom_autoglo, 'en' , en , ldxios = lrxios ) |
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| 740 | CALL iom_get( numror, jpdom_autoglo, 'avt_k', avt_k, ldxios = lrxios ) |
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| 741 | CALL iom_get( numror, jpdom_autoglo, 'avm_k', avm_k, ldxios = lrxios ) |
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| 742 | CALL iom_get( numror, jpdom_autoglo, 'dissl', dissl, ldxios = lrxios ) |
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[9019] | 743 | ELSE ! start TKE from rest |
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[9169] | 744 | IF(lwp) WRITE(numout,*) |
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[9190] | 745 | IF(lwp) WRITE(numout,*) ' ==>>> previous run without TKE scheme, set en to background values' |
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[9019] | 746 | en (:,:,:) = rn_emin * wmask(:,:,:) |
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| 747 | dissl(:,:,:) = 1.e-12_wp |
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| 748 | ! avt_k, avm_k already set to the background value in zdf_phy_init |
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| 749 | ENDIF |
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| 750 | ELSE !* Start from rest |
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[9169] | 751 | IF(lwp) WRITE(numout,*) |
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[9190] | 752 | IF(lwp) WRITE(numout,*) ' ==>>> start from rest: set en to the background value' |
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[9019] | 753 | en (:,:,:) = rn_emin * wmask(:,:,:) |
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| 754 | dissl(:,:,:) = 1.e-12_wp |
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| 755 | ! avt_k, avm_k already set to the background value in zdf_phy_init |
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| 756 | ENDIF |
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| 757 | ! |
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| 758 | ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN ! Create restart file |
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| 759 | ! ! ------------------- |
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[9169] | 760 | IF(lwp) WRITE(numout,*) '---- tke_rst ----' |
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[9367] | 761 | IF( lwxios ) CALL iom_swap( cwxios_context ) |
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| 762 | CALL iom_rstput( kt, nitrst, numrow, 'en' , en , ldxios = lwxios ) |
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| 763 | CALL iom_rstput( kt, nitrst, numrow, 'avt_k', avt_k, ldxios = lwxios ) |
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| 764 | CALL iom_rstput( kt, nitrst, numrow, 'avm_k', avm_k, ldxios = lwxios ) |
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| 765 | CALL iom_rstput( kt, nitrst, numrow, 'dissl', dissl, ldxios = lwxios ) |
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| 766 | IF( lwxios ) CALL iom_swap( cxios_context ) |
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[9019] | 767 | ! |
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| 768 | ENDIF |
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| 769 | ! |
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[1531] | 770 | END SUBROUTINE tke_rst |
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[1239] | 771 | |
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| 772 | !!====================================================================== |
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[1531] | 773 | END MODULE zdftke |
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