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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7 | !! History : 3.0 ! 2009-09 (G. Reffray) : Original code |
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8 | !!---------------------------------------------------------------------- |
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9 | #if defined key_zdfgls || defined key_esopa |
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10 | !!---------------------------------------------------------------------- |
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11 | !! 'key_zdfgls' Generic Length Scale vertical physics |
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12 | !!---------------------------------------------------------------------- |
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13 | !!---------------------------------------------------------------------- |
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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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17 | !!---------------------------------------------------------------------- |
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18 | USE oce ! ocean dynamics and active tracers |
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19 | USE dom_oce ! ocean space and time domain |
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20 | USE domvvl ! ocean space and time domain : variable volume layer |
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21 | USE zdf_oce ! ocean vertical physics |
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22 | USE sbc_oce ! surface boundary condition: ocean |
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23 | USE phycst ! physical constants |
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24 | USE zdfmxl ! mixed layer |
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25 | USE restart ! only for lrst_oce |
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26 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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27 | USE prtctl ! Print control |
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28 | USE in_out_manager ! I/O manager |
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29 | USE iom ! I/O manager library |
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30 | USE zdfbfr, ONLY : rn_hbro, wbotu, wbotv ! bottom roughness and bottom stresses |
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31 | |
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32 | IMPLICIT NONE |
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33 | PRIVATE |
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34 | |
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35 | PUBLIC zdf_gls ! routine called in step module |
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36 | PUBLIC gls_rst ! routine called in step module |
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37 | |
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38 | LOGICAL , PUBLIC, PARAMETER :: lk_zdfgls = .TRUE. !: TKE vertical mixing flag |
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39 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpk) :: en !: now turbulent kinetic energy |
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40 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpk) :: mxln !: now mixing length |
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41 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpk) :: zwall !: wall function |
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42 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: ustars2 !: Squared surface velocity scale at T-points |
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43 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: ustarb2 !: Squared bottom velocity scale at T-points |
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44 | |
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45 | ! !!! ** Namelist namzdf_gls ** |
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46 | LOGICAL :: ln_crban = .FALSE. ! =T use Craig and Banner scheme |
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47 | LOGICAL :: ln_length_lim = .FALSE. ! use limit on the dissipation rate understable stratification (Galperin et al., 1988) |
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48 | LOGICAL :: ln_sigpsi = .FALSE. ! Activate Burchard (2003) modification for k-eps closure AND wave breaking mixing |
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49 | REAL(wp) :: rn_epsmin = 1.e-12_wp ! minimum value of dissipation (m2/s3) |
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50 | REAL(wp) :: rn_emin = 1.e-6_wp ! minimum value of TKE (m2/s2) |
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51 | INTEGER :: nn_tkebc_surf = 0 ! TKE surface boundary condition (=0/1) |
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52 | INTEGER :: nn_tkebc_bot = 0 ! TKE bottom boundary condition (=0/1) |
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53 | INTEGER :: nn_psibc_surf = 0 ! PSI surface boundary condition (=0/1) |
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54 | INTEGER :: nn_psibc_bot = 0 ! PSI bottom boundary condition (=0/1) |
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55 | INTEGER :: nn_stab_func = 0 ! stability functions G88, KC or Canuto (=0/1/2) |
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56 | INTEGER :: nn_clos = 0 ! closure 0/1/2/3 MY82/k-eps/k-w/gen |
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57 | REAL(wp) :: rn_clim_galp = 0.53_wp ! Holt 2008 value for k-eps: 0.267 |
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58 | REAL(wp) :: hsro = 0.003_wp ! Minimum surface roughness |
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59 | REAL(wp) :: rn_charn = 2.e+5_wp ! Charnock constant for surface breaking waves mixing : 1400. (standard) or 2.e5 (Stacey value) |
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60 | REAL(wp) :: rn_crban = 100._wp ! Craig and Banner constant for surface breaking waves mixing |
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61 | |
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62 | REAL(wp) :: rcm_sf = 0.73_wp ! Shear free turbulence parameters |
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63 | REAL(wp) :: ra_sf = -2.0_wp ! Must be negative -2 < ra_sf < -1 |
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64 | REAL(wp) :: rl_sf = 0.2_wp ! 0 <rl_sf<vkarmn |
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65 | REAL(wp) :: rghmin = -0.28 |
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66 | REAL(wp) :: rgh0 = 0.0329 |
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67 | REAL(wp) :: rghcri = 0.03 |
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68 | REAL(wp) :: ra1 = 0.92_wp |
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69 | REAL(wp) :: ra2 = 0.74_wp |
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70 | REAL(wp) :: rb1 = 16.60_wp |
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71 | REAL(wp) :: rb2 = 10.10_wp |
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72 | REAL(wp) :: re2 = 1.33_wp |
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73 | REAL(wp) :: rl1 = 0.107_wp |
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74 | REAL(wp) :: rl2 = 0.0032_wp |
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75 | REAL(wp) :: rl3 = 0.0864_wp |
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76 | REAL(wp) :: rl4 = 0.12_wp |
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77 | REAL(wp) :: rl5 = 11.9_wp |
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78 | REAL(wp) :: rl6 = 0.4_wp |
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79 | REAL(wp) :: rl7 = 0.0_wp |
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80 | REAL(wp) :: rl8 = 0.48_wp |
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81 | REAL(wp) :: rm1 = 0.127_wp |
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82 | REAL(wp) :: rm2 = 0.00336_wp |
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83 | REAL(wp) :: rm3 = 0.0906_wp |
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84 | REAL(wp) :: rm4 = 0.101_wp |
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85 | REAL(wp) :: rm5 = 11.2_wp |
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86 | REAL(wp) :: rm6 = 0.4_wp |
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87 | REAL(wp) :: rm7 = 0.0_wp |
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88 | REAL(wp) :: rm8 = 0.318_wp |
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89 | REAL(wp) :: rc02 |
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90 | REAL(wp) :: rc02r |
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91 | REAL(wp) :: rc03 |
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92 | REAL(wp) :: rc04 |
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93 | REAL(wp) :: rc03_sqrt2_galp |
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94 | REAL(wp) :: rsbc_mb |
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95 | REAL(wp) :: rsbc_std |
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96 | REAL(wp) :: rsbc_tke1 |
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97 | REAL(wp) :: rsbc_tke2 |
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98 | REAL(wp) :: rsbc_tke3 |
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99 | REAL(wp) :: rsbc_psi1 |
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100 | REAL(wp) :: rsbc_psi2 |
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101 | REAL(wp) :: rsbc_psi3 |
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102 | REAL(wp) :: rsbc_zs |
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103 | REAL(wp) :: rfact_tke, rfact_psi |
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104 | REAL(wp) :: rc0, rc2, rc3, rf6, rcff, rc_diff |
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105 | REAL(wp) :: rs0, rs1, rs2, rs4, rs5, rs6 |
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106 | REAL(wp) :: rd0, rd1, rd2, rd3, rd4, rd5 |
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107 | REAL(wp) :: rnc_tke, rsc_psi, rpsi1, rpsi2, rpsi3, rsc_psi0 |
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108 | REAL(wp) :: rpsi3m, rpsi3p, rpp, rmm, rnn |
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109 | |
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110 | !! * Substitutions |
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111 | # include "domzgr_substitute.h90" |
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112 | # include "vectopt_loop_substitute.h90" |
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113 | !!---------------------------------------------------------------------- |
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114 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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115 | !! $Id$ |
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116 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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117 | !!---------------------------------------------------------------------- |
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118 | |
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119 | CONTAINS |
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120 | |
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121 | SUBROUTINE zdf_gls( kt ) |
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122 | !!---------------------------------------------------------------------- |
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123 | !! *** ROUTINE zdf_gls *** |
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124 | !! |
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125 | !! ** Purpose : Compute the vertical eddy viscosity and diffusivity |
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126 | !! coefficients using a 2.5 turbulent closure scheme. |
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127 | !!---------------------------------------------------------------------- |
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128 | USE oce, z_elem_a => ua ! use ua as workspace |
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129 | USE oce, z_elem_b => va ! use va as workspace |
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130 | USE oce, z_elem_c => ta ! use ta as workspace |
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131 | USE oce, psi => sa ! use sa as workspace |
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132 | ! |
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133 | INTEGER, INTENT(in) :: kt ! ocean time step |
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134 | INTEGER :: ji, jj, jk, ibot, ibotm1, dir ! dummy loop arguments |
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135 | ! |
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136 | REAL(wp) :: zesh2, zsigpsi ! temporary scalars |
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137 | REAL(wp) :: ztx2, zty2, zup, zdown, zcof ! - |
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138 | REAL(wp) :: zratio, zrn2, zflxb, sh ! - - |
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139 | REAL(wp) :: prod, buoy, diss, zdiss, sm ! - - |
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140 | REAL(wp) :: gh, gm, shr, dif, zsqen, zav ! - - |
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141 | REAL(wp), DIMENSION(jpi,jpj) :: zdep ! |
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142 | REAL(wp), DIMENSION(jpi,jpj) :: zflxs ! Turbulence fluxed induced by internal waves |
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143 | REAL(wp), DIMENSION(jpi,jpj) :: zhsro ! Surface roughness (surface waves) |
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144 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: eb ! tke at time before |
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145 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: mxlb ! mixing length at time before |
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146 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: shear ! vertical shear |
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147 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: eps ! dissipation rate |
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148 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zwall_psi ! Wall function for psi schmidt number in the wb case |
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149 | ! (if ln_sigpsi.AND.ln_crban) |
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150 | !!-------------------------------------------------------------------- |
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151 | |
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152 | IF( kt == nit000 ) CALL zdf_gls_init ! Initialization (first time-step only) |
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153 | |
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154 | !!-------------------------------------------------------------------- |
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155 | ! Preliminary computing |
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156 | |
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157 | ustars2 = 0. ; ustarb2 = 0. ; psi = 0. ; zwall_psi = 0. |
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158 | |
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159 | ! Compute wind stress at T-points |
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160 | !CDIR NOVERRCHK |
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161 | DO jj = 2, jpjm1 |
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162 | !CDIR NOVERRCHK |
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163 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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164 | ! |
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165 | ! wind stress |
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166 | ! squared surface velocity scale |
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167 | ztx2 = 2. * (utau(ji-1,jj )*umask(ji-1,jj,1) + utau(ji,jj)*umask(ji,jj,1)) / & |
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168 | & MAX(1., umask(ji-1,jj,1) + umask(ji,jj,1)) |
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169 | zty2 = 2. * (vtau(ji ,jj-1)*vmask(ji,jj-1,1) + vtau(ji,jj)*vmask(ji,jj,1)) / & |
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170 | & MAX(1., vmask(ji,jj-1,1) + vmask(ji,jj,1)) |
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171 | ustars2(ji,jj) = rsbc_tke2 * SQRT( ztx2 * ztx2 + zty2 * zty2 ) * tmask(ji,jj,1) |
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172 | ! |
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173 | ! bottom friction |
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174 | ztx2 = 2. * (wbotu(ji-1,jj )*umask(ji-1,jj,1) + wbotu(ji,jj)*umask(ji,jj,1)) / & |
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175 | & MAX(1., umask(ji-1,jj,1) + umask(ji,jj,1)) |
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176 | zty2 = 2. * (wbotv(ji ,jj-1)*vmask(ji,jj-1,1) + wbotv(ji,jj)*vmask(ji,jj,1)) / & |
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177 | & MAX(1., vmask(ji,jj-1,1) + vmask(ji,jj,1)) |
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178 | ustarb2(ji,jj) = 0.5 * SQRT( ztx2 * ztx2 + zty2 * zty2 ) * tmask(ji,jj,1) |
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179 | ENDDO |
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180 | ENDDO |
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181 | |
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182 | ! In case of breaking surface waves mixing, |
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183 | ! Compute surface roughness length according to Charnock formula: |
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184 | IF (ln_crban) THEN |
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185 | zhsro(:,:) = MAX(rsbc_zs * ustars2(:,:), hsro) |
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186 | ELSE |
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187 | zhsro(:,:) = hsro |
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188 | ENDIF |
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189 | |
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190 | ! Compute shear and dissipation rate |
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191 | DO jk = 2, jpkm1 |
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192 | DO jj = 2, jpjm1 |
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193 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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194 | avmu(ji,jj,jk) = avmu(ji,jj,jk) * ( un(ji,jj,jk-1) - un(ji,jj,jk) ) & |
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195 | & * ( ub(ji,jj,jk-1) - ub(ji,jj,jk) ) & |
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196 | & / ( fse3uw_n(ji,jj,jk) & |
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197 | & * fse3uw_b(ji,jj,jk) ) |
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198 | avmv(ji,jj,jk) = avmv(ji,jj,jk) * ( vn(ji,jj,jk-1) - vn(ji,jj,jk) ) & |
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199 | & * ( vb(ji,jj,jk-1) - vb(ji,jj,jk) ) & |
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200 | & / ( fse3vw_n(ji,jj,jk) & |
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201 | & * fse3vw_b(ji,jj,jk) ) |
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202 | eps(ji,jj,jk) = rc03 * en(ji,jj,jk) * SQRT(en(ji,jj,jk)) / mxln(ji,jj,jk) |
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203 | ENDDO |
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204 | ENDDO |
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205 | ENDDO |
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206 | ! |
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207 | ! Lateral boundary conditions (avmu,avmv) (sign unchanged) |
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208 | CALL lbc_lnk( avmu, 'U', 1. ) ; CALL lbc_lnk( avmv, 'V', 1. ) |
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209 | |
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210 | ! Save tke at before time step |
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211 | eb (:,:,:) = en (:,:,:) |
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212 | mxlb(:,:,:) = mxln(:,:,:) |
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213 | |
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214 | IF ( nn_clos .EQ. 0 ) THEN ! Mellor-Yamada |
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215 | DO jk = 2, jpkm1 |
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216 | DO jj = 2, jpjm1 |
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217 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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218 | zup = mxln(ji,jj,jk) * fsdepw(ji,jj,mbathy(ji,jj)) |
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219 | zdown = vkarmn * fsdepw(ji,jj,jk) * (-fsdepw(ji,jj,jk)+fsdepw(ji,jj,mbathy(ji,jj))) |
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220 | zwall (ji,jj,jk) = ( 1. + re2 * ( zup / MAX( zdown, rsmall ) )**2. ) * tmask(ji,jj,jk) |
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221 | ENDDO |
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222 | ENDDO |
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223 | ENDDO |
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224 | ENDIF |
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225 | |
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226 | !!---------------------------------!! |
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227 | !! Equation to prognostic k !! |
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228 | !!---------------------------------!! |
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229 | ! |
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230 | ! Now Turbulent kinetic energy (output in en) |
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231 | ! ------------------------------- |
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232 | ! Resolution of a tridiagonal linear system by a "methode de chasse" |
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233 | ! computation from level 2 to jpkm1 (e(1) computed after and e(jpk)=0 ). |
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234 | ! The surface boundary condition are set after |
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235 | ! The bottom boundary condition are also set after. In standard e(bottom)=0. |
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236 | ! z_elem_b : diagonal z_elem_c : upper diagonal z_elem_a : lower diagonal |
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237 | ! Warning : after this step, en : right hand side of the matrix |
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238 | |
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239 | DO jk = 2, jpkm1 |
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240 | DO jj = 2, jpjm1 |
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241 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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242 | ! |
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243 | ! shear prod. at w-point weightened by mask |
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244 | shear(ji,jj,jk) = ( avmu(ji-1,jj,jk) + avmu(ji,jj,jk) ) / MAX( 1.e0 , umask(ji-1,jj,jk) + umask(ji,jj,jk) ) & |
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245 | & + ( avmv(ji,jj-1,jk) + avmv(ji,jj,jk) ) / MAX( 1.e0 , vmask(ji,jj-1,jk) + vmask(ji,jj,jk) ) |
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246 | ! |
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247 | ! stratif. destruction |
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248 | buoy = - avt(ji,jj,jk) * rn2(ji,jj,jk) |
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249 | ! |
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250 | ! shear prod. - stratif. destruction |
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251 | diss = eps(ji,jj,jk) |
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252 | ! |
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253 | dir = 0.5 + sign(0.5,shear(ji,jj,jk)+buoy) ! dir =1(=0) if shear(ji,jj,jk)+buoy >0(<0) |
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254 | ! |
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255 | zesh2 = dir*(shear(ji,jj,jk)+buoy)+(1-dir)*shear(ji,jj,jk) ! production term |
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256 | zdiss = dir*(diss/en(ji,jj,jk)) +(1-dir)*(diss-buoy)/en(ji,jj,jk) ! dissipation term |
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257 | ! |
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258 | ! Compute a wall function from 1. to rsc_psi*zwall/rsc_psi0 |
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259 | ! Note that as long that Dirichlet boundary conditions are NOT set at the first and last levels (GOTM style) |
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260 | ! there is no need to set a boundary condition for zwall_psi at the top and bottom boundaries. |
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261 | ! Otherwise, this should be rsc_psi/rsc_psi0 |
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262 | IF (ln_sigpsi) THEN |
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263 | zsigpsi = MIN(1., zesh2/eps(ji,jj,jk)) ! 0. <= zsigpsi <= 1. |
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264 | zwall_psi(ji,jj,jk) = rsc_psi / (zsigpsi * rsc_psi + (1.-zsigpsi) * rsc_psi0 / MAX(zwall(ji,jj,jk),1.)) |
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265 | ELSE |
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266 | zwall_psi(ji,jj,jk) = 1. |
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267 | ENDIF |
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268 | ! |
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269 | ! building the matrix |
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270 | zcof = rfact_tke * tmask(ji,jj,jk) |
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271 | ! |
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272 | ! lower diagonal |
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273 | z_elem_a(ji,jj,jk) = zcof * ( avm (ji,jj,jk ) + avm (ji,jj,jk-1) ) & |
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274 | & / ( fse3t(ji,jj,jk-1) * fse3w(ji,jj,jk ) ) |
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275 | ! |
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276 | ! upper diagonal |
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277 | z_elem_c(ji,jj,jk) = zcof * ( avm (ji,jj,jk+1) + avm (ji,jj,jk ) ) & |
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278 | & / ( fse3t(ji,jj,jk ) * fse3w(ji,jj,jk) ) |
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279 | ! |
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280 | ! diagonal |
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281 | z_elem_b(ji,jj,jk) = 1. - z_elem_a(ji,jj,jk) - z_elem_c(ji,jj,jk) & |
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282 | & + rdt * zdiss * tmask(ji,jj,jk) |
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283 | ! |
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284 | ! right hand side in en |
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285 | en(ji,jj,jk) = en(ji,jj,jk) + rdt * zesh2 * tmask(ji,jj,jk) |
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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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290 | z_elem_b(:,:,jpk) = 1. |
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291 | ! |
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292 | ! Set surface condition on zwall_psi (1 at the bottom) |
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293 | IF (ln_sigpsi) THEN |
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294 | DO jj = 2, jpjm1 |
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295 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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296 | zwall_psi(ji,jj,1) = rsc_psi/rsc_psi0 |
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297 | END DO |
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298 | END DO |
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299 | ENDIF |
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300 | |
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301 | ! Surface boundary condition on tke |
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302 | ! --------------------------------- |
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303 | ! |
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304 | SELECT CASE ( nn_tkebc_surf ) |
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305 | ! |
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306 | CASE ( 0 ) ! Dirichlet case |
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307 | ! |
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308 | IF (ln_crban) THEN ! Wave induced mixing case |
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309 | ! ! en(1) = q2(1) = 0.5 * (15.8 * Ccb)^(2/3) * u*^2 |
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310 | ! ! balance between the production and the dissipation terms including the wave effect |
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311 | ! |
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312 | en(:,:,1) = MAX( rsbc_tke1 * ustars2(:,:), rn_emin ) |
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313 | z_elem_a(:,:,1) = en(:,:,1) |
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314 | z_elem_c(:,:,1) = 0. |
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315 | z_elem_b(:,:,1) = 1. |
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316 | ! |
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317 | ! one level below |
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318 | en(:,:,2) = MAX( rsbc_tke1 * ustars2(:,:) * ( (zhsro(:,:)+fsdepw(:,:,2))/zhsro(:,:) )**ra_sf, rn_emin ) |
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319 | z_elem_a(:,:,2) = 0. |
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320 | z_elem_c(:,:,2) = 0. |
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321 | z_elem_b(:,:,2) = 1. |
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322 | ! |
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323 | ELSE ! No wave induced mixing case |
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324 | ! ! en(1) = u*^2/C0^2 & l(1) = K*zs |
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325 | ! ! balance between the production and the dissipation terms |
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326 | ! |
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327 | en(:,:,1) = MAX( rc02r * ustars2(:,:), rn_emin ) |
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328 | z_elem_a(:,:,1) = en(:,:,1) |
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329 | z_elem_c(:,:,1) = 0. |
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330 | z_elem_b(:,:,1) = 1. |
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331 | ! |
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332 | ! one level below |
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333 | en(:,:,2) = MAX( rc02r * ustars2(:,:), rn_emin ) |
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334 | z_elem_a(:,:,2) = 0. |
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335 | z_elem_c(:,:,2) = 0. |
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336 | z_elem_b(:,:,2) = 1. |
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337 | ! |
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338 | ENDIF |
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339 | ! |
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340 | CASE ( 1 ) ! Neumann boundary condition on d(e)/dz |
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341 | ! |
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342 | IF (ln_crban) THEN ! Shear free case: d(e)/dz= Fw |
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343 | ! |
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344 | ! Dirichlet conditions at k=1 (Cosmetic) |
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345 | en(:,:,1) = MAX( rsbc_tke1 * ustars2(:,:), rn_emin ) |
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346 | z_elem_a(:,:,1) = en(:,:,1) |
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347 | z_elem_c(:,:,1) = 0. |
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348 | z_elem_b(:,:,1) = 1. |
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349 | ! at k=2, set de/dz=Fw |
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350 | z_elem_b(:,:,2) = z_elem_b(:,:,2) + z_elem_a(:,:,2) ! Remove z_elem_a from z_elem_b |
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351 | z_elem_a(:,:,2) = 0. |
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352 | zflxs(:,:) = rsbc_tke3 * ustars2(:,:)**1.5 * ((zhsro(:,:)+fsdept(:,:,1))/zhsro(:,:) )**(1.5*ra_sf) |
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353 | en(:,:,2) = en(:,:,2) + zflxs(:,:)/fse3w(:,:,2) |
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354 | ! |
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355 | ELSE ! No wave induced mixing case: d(e)/dz=0. |
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356 | ! |
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357 | ! Dirichlet conditions at k=1 (Cosmetic) |
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358 | en(:,:,1) = MAX( rc02r * ustars2(:,:), rn_emin ) |
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359 | z_elem_a(:,:,1) = en(:,:,1) |
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360 | z_elem_c(:,:,1) = 0. |
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361 | z_elem_b(:,:,1) = 1. |
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362 | ! at k=2 set de/dz=0.: |
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363 | z_elem_b(:,:,2) = z_elem_b(:,:,2) + z_elem_a(:,:,2) ! Remove z_elem_a from z_elem_b |
---|
364 | z_elem_a(:,:,2) = 0. |
---|
365 | ! |
---|
366 | ENDIF |
---|
367 | ! |
---|
368 | END SELECT |
---|
369 | |
---|
370 | ! Bottom boundary condition on tke |
---|
371 | ! -------------------------------- |
---|
372 | ! |
---|
373 | SELECT CASE ( nn_tkebc_bot ) |
---|
374 | ! |
---|
375 | CASE ( 0 ) ! Dirichlet |
---|
376 | ! ! en(ibot) = u*^2 / Co2 and mxln(ibot) = rn_lmin |
---|
377 | ! ! Balance between the production and the dissipation terms |
---|
378 | ! |
---|
379 | !CDIR NOVERRCHK |
---|
380 | DO jj = 2, jpjm1 |
---|
381 | !CDIR NOVERRCHK |
---|
382 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
383 | ibot = mbathy(ji,jj) |
---|
384 | ibotm1 = ibot-1 |
---|
385 | ! |
---|
386 | ! Bottom level Dirichlet condition: |
---|
387 | z_elem_a(ji,jj,ibot ) = 0. |
---|
388 | z_elem_c(ji,jj,ibot ) = 0. |
---|
389 | z_elem_b(ji,jj,ibot ) = 1. |
---|
390 | en(ji,jj,ibot ) = MAX( rc02r * ustarb2(ji,jj), rn_emin ) |
---|
391 | ! |
---|
392 | ! Just above last level, Dirichlet condition again |
---|
393 | z_elem_a(ji,jj,ibotm1) = 0. |
---|
394 | z_elem_c(ji,jj,ibotm1) = 0. |
---|
395 | z_elem_b(ji,jj,ibotm1) = 1. |
---|
396 | en(ji,jj,ibotm1) = MAX( rc02r * ustarb2(ji,jj), rn_emin ) |
---|
397 | END DO |
---|
398 | END DO |
---|
399 | ! |
---|
400 | CASE ( 1 ) ! Neumman boundary condition |
---|
401 | ! |
---|
402 | !CDIR NOVERRCHK |
---|
403 | DO jj = 2, jpjm1 |
---|
404 | !CDIR NOVERRCHK |
---|
405 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
406 | ibot = mbathy(ji,jj) |
---|
407 | ibotm1 = ibot-1 |
---|
408 | ! |
---|
409 | ! Bottom level Dirichlet condition: |
---|
410 | z_elem_a(ji,jj,ibot) = 0. |
---|
411 | z_elem_c(ji,jj,ibot) = 0. |
---|
412 | z_elem_b(ji,jj,ibot) = 1. |
---|
413 | en(ji,jj,ibot) = MAX( rc02r * ustarb2(ji,jj), rn_emin ) |
---|
414 | ! |
---|
415 | ! Just above last level: Neumann condition |
---|
416 | z_elem_b(ji,jj,ibotm1) = z_elem_b(ji,jj,ibotm1) + z_elem_c(ji,jj,ibotm1) ! Remove z_elem_c from z_elem_b |
---|
417 | z_elem_c(ji,jj,ibotm1) = 0. |
---|
418 | END DO |
---|
419 | END DO |
---|
420 | ! |
---|
421 | END SELECT |
---|
422 | |
---|
423 | ! Matrix inversion (en prescribed at surface and the bottom) |
---|
424 | ! ---------------------------------------------------------- |
---|
425 | ! |
---|
426 | DO jk = 2, jpkm1 ! First recurrence : Dk = Dk - Lk * Uk-1 / Dk-1 |
---|
427 | DO jj = 2, jpjm1 |
---|
428 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
429 | z_elem_b(ji,jj,jk) = z_elem_b(ji,jj,jk) - z_elem_a(ji,jj,jk) * z_elem_c(ji,jj,jk-1) / z_elem_b(ji,jj,jk-1) |
---|
430 | END DO |
---|
431 | END DO |
---|
432 | END DO |
---|
433 | DO jk = 2, jpk ! Second recurrence : Lk = RHSk - Lk / Dk-1 * Lk-1 |
---|
434 | DO jj = 2, jpjm1 |
---|
435 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
436 | z_elem_a(ji,jj,jk) = en(ji,jj,jk) - z_elem_a(ji,jj,jk) / z_elem_b(ji,jj,jk-1) * z_elem_a(ji,jj,jk-1) |
---|
437 | END DO |
---|
438 | END DO |
---|
439 | END DO |
---|
440 | DO jk = jpk-1, 2, -1 ! thrid recurrence : Ek = ( Lk - Uk * Ek+1 ) / Dk |
---|
441 | DO jj = 2, jpjm1 |
---|
442 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
443 | en(ji,jj,jk) = ( z_elem_a(ji,jj,jk) - z_elem_c(ji,jj,jk) * en(ji,jj,jk+1) ) / z_elem_b(ji,jj,jk) |
---|
444 | END DO |
---|
445 | END DO |
---|
446 | END DO |
---|
447 | ! |
---|
448 | ! set the minimum value of tke |
---|
449 | en(:,:,:) = MAX( en(:,:,:), rn_emin ) |
---|
450 | |
---|
451 | !!----------------------------------------!! |
---|
452 | !! Solve prognostic equation for psi !! |
---|
453 | !!----------------------------------------!! |
---|
454 | |
---|
455 | ! Set psi to previous time step value |
---|
456 | ! |
---|
457 | SELECT CASE ( nn_clos ) |
---|
458 | ! |
---|
459 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
460 | ! |
---|
461 | DO jk = 2, jpkm1 |
---|
462 | DO jj = 2, jpjm1 |
---|
463 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
464 | psi(ji,jj,jk) = en(ji,jj,jk) * mxln(ji,jj,jk) |
---|
465 | ENDDO |
---|
466 | ENDDO |
---|
467 | ENDDO |
---|
468 | ! |
---|
469 | CASE( 1 ) ! k-eps |
---|
470 | ! |
---|
471 | DO jk = 2, jpkm1 |
---|
472 | DO jj = 2, jpjm1 |
---|
473 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
474 | psi(ji,jj,jk) = eps(ji,jj,jk) |
---|
475 | ENDDO |
---|
476 | ENDDO |
---|
477 | ENDDO |
---|
478 | ! |
---|
479 | CASE( 2 ) ! k-w |
---|
480 | ! |
---|
481 | DO jk = 2, jpkm1 |
---|
482 | DO jj = 2, jpjm1 |
---|
483 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
484 | psi(ji,jj,jk) = SQRT(en(ji,jj,jk)) / (rc0 * mxln(ji,jj,jk)) |
---|
485 | ENDDO |
---|
486 | ENDDO |
---|
487 | ENDDO |
---|
488 | ! |
---|
489 | CASE( 3 ) ! gen |
---|
490 | ! |
---|
491 | DO jk = 2, jpkm1 |
---|
492 | DO jj = 2, jpjm1 |
---|
493 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
494 | psi(ji,jj,jk) = rc02 * en(ji,jj,jk) * mxln(ji,jj,jk)**rnn |
---|
495 | ENDDO |
---|
496 | ENDDO |
---|
497 | ENDDO |
---|
498 | ! |
---|
499 | END SELECT |
---|
500 | ! |
---|
501 | ! Now gls (output in psi) |
---|
502 | ! ------------------------------- |
---|
503 | ! Resolution of a tridiagonal linear system by a "methode de chasse" |
---|
504 | ! computation from level 2 to jpkm1 (e(1) already computed and e(jpk)=0 ). |
---|
505 | ! z_elem_b : diagonal z_elem_c : upper diagonal z_elem_a : lower diagonal |
---|
506 | ! Warning : after this step, en : right hand side of the matrix |
---|
507 | |
---|
508 | DO jk = 2, jpkm1 |
---|
509 | DO jj = 2, jpjm1 |
---|
510 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
511 | ! |
---|
512 | ! psi / k |
---|
513 | zratio = psi(ji,jj,jk) / eb(ji,jj,jk) |
---|
514 | ! |
---|
515 | ! psi3+ : stable : B=-KhN²<0 => N²>0 if rn2>0 dir = 1 (stable) otherwise dir = 0 (unstable) |
---|
516 | dir = 0.5 + sign(0.5,rn2(ji,jj,jk)) |
---|
517 | ! |
---|
518 | rpsi3 = dir*rpsi3m+(1-dir)*rpsi3p |
---|
519 | ! |
---|
520 | ! shear prod. - stratif. destruction |
---|
521 | prod = rpsi1 * zratio * shear(ji,jj,jk) |
---|
522 | ! |
---|
523 | ! stratif. destruction |
---|
524 | buoy = rpsi3 * zratio * (- avt(ji,jj,jk) * rn2(ji,jj,jk)) |
---|
525 | ! |
---|
526 | ! shear prod. - stratif. destruction |
---|
527 | diss = rpsi2 * zratio * zwall(ji,jj,jk) * eps(ji,jj,jk) |
---|
528 | ! |
---|
529 | dir = 0.5 + sign(0.5,prod+buoy) ! dir =1(=0) if shear(ji,jj,jk)+buoy >0(<0) |
---|
530 | ! |
---|
531 | zesh2 = dir*(prod+buoy) +(1-dir)*prod ! production term |
---|
532 | zdiss = dir*(diss/psi(ji,jj,jk)) +(1-dir)*(diss-buoy)/psi(ji,jj,jk) ! dissipation term |
---|
533 | ! |
---|
534 | ! building the matrix |
---|
535 | zcof = rfact_psi * zwall_psi(ji,jj,jk) * tmask(ji,jj,jk) |
---|
536 | ! lower diagonal |
---|
537 | z_elem_a(ji,jj,jk) = zcof * ( avm (ji,jj,jk ) + avm (ji,jj,jk-1) ) & |
---|
538 | & / ( fse3t(ji,jj,jk-1) * fse3w(ji,jj,jk ) ) |
---|
539 | ! upper diagonal |
---|
540 | z_elem_c(ji,jj,jk) = zcof * ( avm (ji,jj,jk+1) + avm (ji,jj,jk ) ) & |
---|
541 | & / ( fse3t(ji,jj,jk ) * fse3w(ji,jj,jk) ) |
---|
542 | ! diagonal |
---|
543 | z_elem_b(ji,jj,jk) = 1. - z_elem_a(ji,jj,jk) - z_elem_c(ji,jj,jk) & |
---|
544 | & + rdt * zdiss * tmask(ji,jj,jk) |
---|
545 | ! |
---|
546 | ! right hand side in psi |
---|
547 | psi(ji,jj,jk) = psi(ji,jj,jk) + rdt * zesh2 * tmask(ji,jj,jk) |
---|
548 | END DO |
---|
549 | END DO |
---|
550 | END DO |
---|
551 | ! |
---|
552 | z_elem_b(:,:,jpk) = 1. |
---|
553 | |
---|
554 | ! Surface boundary condition on psi |
---|
555 | ! --------------------------------- |
---|
556 | ! |
---|
557 | SELECT CASE ( nn_psibc_surf ) |
---|
558 | ! |
---|
559 | CASE ( 0 ) ! Dirichlet boundary conditions |
---|
560 | ! |
---|
561 | IF (ln_crban) THEN ! Wave induced mixing case |
---|
562 | ! ! en(1) = q2(1) = 0.5 * (15.8 * Ccb)^(2/3) * u*^2 |
---|
563 | ! ! balance between the production and the dissipation terms including the wave effect |
---|
564 | ! |
---|
565 | zdep(:,:) = rl_sf * zhsro(:,:) |
---|
566 | psi (:,:,1) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
567 | z_elem_a(:,:,1) = psi(:,:,1) |
---|
568 | z_elem_c(:,:,1) = 0. |
---|
569 | z_elem_b(:,:,1) = 1. |
---|
570 | ! |
---|
571 | ! one level below |
---|
572 | zdep(:,:) = ( (zhsro(:,:) + fsdepw(:,:,2))**(rmm*ra_sf+rnn) ) & |
---|
573 | & / zhsro(:,:)**(rmm*ra_sf) |
---|
574 | psi (:,:,2) = rsbc_psi1 * ustars2(:,:)**rmm * zdep(:,:) * tmask(:,:,1) |
---|
575 | z_elem_a(:,:,2) = 0. |
---|
576 | z_elem_c(:,:,2) = 0. |
---|
577 | z_elem_b(:,:,2) = 1. |
---|
578 | ! |
---|
579 | ELSE ! No wave induced mixing case |
---|
580 | ! ! en(1) = u*^2/C0^2 & l(1) = K*zs |
---|
581 | ! ! balance between the production and the dissipation terms |
---|
582 | ! |
---|
583 | zdep(:,:) = vkarmn * zhsro(:,:) |
---|
584 | psi (:,:,1) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
585 | z_elem_a(:,:,1) = psi(:,:,1) |
---|
586 | z_elem_c(:,:,1) = 0. |
---|
587 | z_elem_b(:,:,1) = 1. |
---|
588 | ! |
---|
589 | ! one level below |
---|
590 | zdep(:,:) = vkarmn * ( zhsro(:,:) + fsdepw(:,:,2) ) |
---|
591 | psi (:,:,2) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
592 | z_elem_a(:,:,2) = 0. |
---|
593 | z_elem_c(:,:,2) = 0. |
---|
594 | z_elem_b(:,:,2) = 1. |
---|
595 | ! |
---|
596 | ENDIF |
---|
597 | ! |
---|
598 | CASE ( 1 ) ! Neumann boundary condition on d(psi)/dz |
---|
599 | ! |
---|
600 | IF (ln_crban) THEN ! Wave induced mixing case |
---|
601 | ! |
---|
602 | zdep(:,:) = rl_sf * zhsro(:,:) |
---|
603 | psi (:,:,1) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
604 | z_elem_a(:,:,1) = psi(:,:,1) |
---|
605 | z_elem_c(:,:,1) = 0. |
---|
606 | z_elem_b(:,:,1) = 1. |
---|
607 | ! |
---|
608 | ! Neumann condition at k=2 |
---|
609 | z_elem_b(:,:,2) = z_elem_b(:,:,2) + z_elem_a(:,:,2) ! Remove z_elem_a from z_elem_b |
---|
610 | z_elem_a(:,:,2) = 0. |
---|
611 | ! |
---|
612 | ! Set psi vertical flux at the surface: |
---|
613 | zdep(:,:) = (zhsro(:,:) + fsdept(:,:,1))**(rmm*ra_sf+rnn-1.) / zhsro(:,:)**(rmm*ra_sf) |
---|
614 | zflxs(:,:) = rsbc_psi3 * ( zwall_psi(:,:,1)*avm(:,:,1) + zwall_psi(:,:,2)*avm(:,:,2) ) & |
---|
615 | & * en(:,:,1)**rmm * zdep |
---|
616 | psi(:,:,2) = psi(:,:,2) + zflxs(:,:) / fse3w(:,:,2) |
---|
617 | ! |
---|
618 | ELSE ! No wave induced mixing |
---|
619 | ! |
---|
620 | zdep(:,:) = vkarmn * zhsro(:,:) |
---|
621 | psi (:,:,1) = rc0**rpp * en(:,:,1)**rmm * zdep(:,:)**rnn * tmask(:,:,1) |
---|
622 | z_elem_a(:,:,1) = psi(:,:,1) |
---|
623 | z_elem_c(:,:,1) = 0. |
---|
624 | z_elem_b(:,:,1) = 1. |
---|
625 | ! |
---|
626 | ! Neumann condition at k=2 |
---|
627 | z_elem_b(:,:,2) = z_elem_b(:,:,2) + z_elem_a(:,:,2) ! Remove z_elem_a from z_elem_b |
---|
628 | z_elem_a(ji,jj,2) = 0. |
---|
629 | ! |
---|
630 | ! Set psi vertical flux at the surface: |
---|
631 | zdep(:,:) = zhsro(:,:) + fsdept(:,:,1) |
---|
632 | zflxs(:,:) = rsbc_psi2 * ( avm(:,:,1) + avm(:,:,2) ) * en(:,:,1)**rmm * zdep**(rnn-1.) |
---|
633 | psi(:,:,2) = psi(:,:,2) + zflxs(:,:) / fse3w(:,:,2) |
---|
634 | ! |
---|
635 | ENDIF |
---|
636 | ! |
---|
637 | END SELECT |
---|
638 | |
---|
639 | ! Bottom boundary condition on psi |
---|
640 | ! -------------------------------- |
---|
641 | ! |
---|
642 | SELECT CASE ( nn_psibc_bot ) |
---|
643 | ! |
---|
644 | ! |
---|
645 | CASE ( 0 ) ! Dirichlet |
---|
646 | ! ! en(ibot) = u*^2 / Co2 and mxln(ibot) = vkarmn * rn_hbro |
---|
647 | ! ! Balance between the production and the dissipation terms |
---|
648 | !CDIR NOVERRCHK |
---|
649 | DO jj = 2, jpjm1 |
---|
650 | !CDIR NOVERRCHK |
---|
651 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
652 | ibot = mbathy(ji,jj) |
---|
653 | ibotm1 = ibot-1 |
---|
654 | zdep(ji,jj) = vkarmn * rn_hbro |
---|
655 | psi (ji,jj,ibot) = rc0**rpp * en(ji,jj,ibot)**rmm * zdep(ji,jj)**rnn |
---|
656 | z_elem_a(ji,jj,ibot) = 0. |
---|
657 | z_elem_c(ji,jj,ibot) = 0. |
---|
658 | z_elem_b(ji,jj,ibot) = 1. |
---|
659 | ! |
---|
660 | ! Just above last level, Dirichlet condition again (GOTM like) |
---|
661 | zdep(ji,jj) = vkarmn * (rn_hbro + fse3t(ji,jj,ibotm1)) |
---|
662 | psi (ji,jj,ibotm1) = rc0**rpp * en(ji,jj,ibot )**rmm * zdep(ji,jj)**rnn |
---|
663 | z_elem_a(ji,jj,ibotm1) = 0. |
---|
664 | z_elem_c(ji,jj,ibotm1) = 0. |
---|
665 | z_elem_b(ji,jj,ibotm1) = 1. |
---|
666 | END DO |
---|
667 | END DO |
---|
668 | ! |
---|
669 | ! |
---|
670 | CASE ( 1 ) ! Neumman boundary condition |
---|
671 | ! |
---|
672 | !CDIR NOVERRCHK |
---|
673 | DO jj = 2, jpjm1 |
---|
674 | !CDIR NOVERRCHK |
---|
675 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
676 | ibot = mbathy(ji,jj) |
---|
677 | ibotm1 = ibot-1 |
---|
678 | ! |
---|
679 | ! Bottom level Dirichlet condition: |
---|
680 | zdep(ji,jj) = vkarmn * rn_hbro |
---|
681 | psi (ji,jj,ibot) = rc0**rpp * en(ji,jj,ibot)**rmm * zdep(ji,jj)**rnn |
---|
682 | ! |
---|
683 | z_elem_a(ji,jj,ibot) = 0. |
---|
684 | z_elem_c(ji,jj,ibot) = 0. |
---|
685 | z_elem_b(ji,jj,ibot) = 1. |
---|
686 | ! |
---|
687 | ! Just above last level: Neumann condition with flux injection |
---|
688 | z_elem_b(ji,jj,ibotm1) = z_elem_b(ji,jj,ibotm1) + z_elem_c(ji,jj,ibotm1) ! Remove z_elem_c from z_elem_b |
---|
689 | z_elem_c(ji,jj,ibotm1) = 0. |
---|
690 | ! |
---|
691 | ! Set psi vertical flux at the bottom: |
---|
692 | zdep(ji,jj) = rn_hbro + 0.5*fse3t(ji,jj,ibotm1) |
---|
693 | zflxb = rsbc_psi2 * ( avm(ji,jj,ibot) + avm(ji,jj,ibotm1) ) * & |
---|
694 | & (0.5*(en(ji,jj,ibot)+en(ji,jj,ibotm1)))**rmm * zdep(ji,jj)**(rnn-1.) |
---|
695 | psi(ji,jj,ibotm1) = psi(ji,jj,ibotm1) + zflxb / fse3w(ji,jj,ibotm1) |
---|
696 | END DO |
---|
697 | END DO |
---|
698 | ! |
---|
699 | END SELECT |
---|
700 | |
---|
701 | ! Matrix inversion |
---|
702 | ! ---------------- |
---|
703 | ! |
---|
704 | DO jk = 2, jpkm1 ! First recurrence : Dk = Dk - Lk * Uk-1 / Dk-1 |
---|
705 | DO jj = 2, jpjm1 |
---|
706 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
707 | z_elem_b(ji,jj,jk) = z_elem_b(ji,jj,jk) - z_elem_a(ji,jj,jk) * z_elem_c(ji,jj,jk-1) / z_elem_b(ji,jj,jk-1) |
---|
708 | END DO |
---|
709 | END DO |
---|
710 | END DO |
---|
711 | DO jk = 2, jpk ! Second recurrence : Lk = RHSk - Lk / Dk-1 * Lk-1 |
---|
712 | DO jj = 2, jpjm1 |
---|
713 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
714 | z_elem_a(ji,jj,jk) = psi(ji,jj,jk) - z_elem_a(ji,jj,jk) / z_elem_b(ji,jj,jk-1) * z_elem_a(ji,jj,jk-1) |
---|
715 | END DO |
---|
716 | END DO |
---|
717 | END DO |
---|
718 | DO jk = jpk-1, 2, -1 ! Third recurrence : Ek = ( Lk - Uk * Ek+1 ) / Dk |
---|
719 | DO jj = 2, jpjm1 |
---|
720 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
721 | psi(ji,jj,jk) = ( z_elem_a(ji,jj,jk) - z_elem_c(ji,jj,jk) * psi(ji,jj,jk+1) ) / z_elem_b(ji,jj,jk) |
---|
722 | END DO |
---|
723 | END DO |
---|
724 | END DO |
---|
725 | |
---|
726 | ! Set dissipation |
---|
727 | !---------------- |
---|
728 | |
---|
729 | SELECT CASE ( nn_clos ) |
---|
730 | ! |
---|
731 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
732 | ! |
---|
733 | DO jk = 1, jpkm1 |
---|
734 | DO jj = 2, jpjm1 |
---|
735 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
736 | eps(ji,jj,jk) = rc03 * en(ji,jj,jk) * en(ji,jj,jk) * SQRT(en(ji,jj,jk)) / psi(ji,jj,jk) |
---|
737 | ENDDO |
---|
738 | ENDDO |
---|
739 | ENDDO |
---|
740 | ! |
---|
741 | CASE( 1 ) ! k-eps |
---|
742 | ! |
---|
743 | DO jk = 1, jpkm1 |
---|
744 | DO jj = 2, jpjm1 |
---|
745 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
746 | eps(ji,jj,jk) = psi(ji,jj,jk) |
---|
747 | ENDDO |
---|
748 | ENDDO |
---|
749 | ENDDO |
---|
750 | ! |
---|
751 | CASE( 2 ) ! k-w |
---|
752 | ! |
---|
753 | DO jk = 1, jpkm1 |
---|
754 | DO jj = 2, jpjm1 |
---|
755 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
756 | eps(ji,jj,jk) = rc04 * en(ji,jj,jk) * psi(ji,jj,jk) |
---|
757 | ENDDO |
---|
758 | ENDDO |
---|
759 | ENDDO |
---|
760 | ! |
---|
761 | CASE( 3 ) ! gen |
---|
762 | ! |
---|
763 | DO jk = 1, jpkm1 |
---|
764 | DO jj = 2, jpjm1 |
---|
765 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
766 | eps(ji,jj,jk) = rc0**(3.+rpp/rnn) * en(ji,jj,jk)**(1.5+rmm/rnn) * psi(ji,jj,jk)**(-1./rnn) |
---|
767 | ENDDO |
---|
768 | ENDDO |
---|
769 | ENDDO |
---|
770 | ! |
---|
771 | END SELECT |
---|
772 | |
---|
773 | ! Limit dissipation rate under stable stratification |
---|
774 | ! -------------------------------------------------- |
---|
775 | DO jk = 1, jpkm1 ! Note that this set boundary conditions on mxln at the same time |
---|
776 | DO jj = 2, jpjm1 |
---|
777 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
778 | ! limitation |
---|
779 | eps(ji,jj,jk) = MAX( eps(ji,jj,jk), rn_epsmin ) |
---|
780 | mxln(ji,jj,jk) = rc03 * en(ji,jj,jk) * SQRT(en(ji,jj,jk)) / eps(ji,jj,jk) |
---|
781 | ! Galperin criterium (NOTE : Not required if the proper value of C3 in stable cases is calculated) |
---|
782 | zrn2 = MAX( rn2(ji,jj,jk), rsmall ) |
---|
783 | mxln(ji,jj,jk) = MIN( rn_clim_galp*SQRT( 2.*en(ji,jj,jk)/zrn2 ), mxln(ji,jj,jk) ) |
---|
784 | END DO |
---|
785 | END DO |
---|
786 | END DO |
---|
787 | |
---|
788 | ! |
---|
789 | ! Stability function and vertical viscosity and diffusivity |
---|
790 | ! --------------------------------------------------------- |
---|
791 | ! |
---|
792 | SELECT CASE ( nn_stab_func ) |
---|
793 | ! |
---|
794 | CASE ( 0 , 1 ) ! Galperin or Kantha-Clayson stability functions |
---|
795 | ! |
---|
796 | DO jk = 2, jpkm1 |
---|
797 | DO jj = 2, jpjm1 |
---|
798 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
799 | ! zcof = l²/q² |
---|
800 | zcof = mxlb(ji,jj,jk)**2. / ( 2.*eb(ji,jj,jk) ) |
---|
801 | ! Gh = -N²l²/q² |
---|
802 | gh = - rn2(ji,jj,jk) * zcof |
---|
803 | gh = MIN( gh, rgh0 ) |
---|
804 | gh = MAX( gh, rghmin ) |
---|
805 | ! Stability functions from Kantha and Clayson (if C2=C3=0 => Galperin) |
---|
806 | sh = ra2*( 1.-6.*ra1/rb1 ) / ( 1.-3.*ra2*gh*(6.*ra1+rb2*( 1.-rc3 ) ) ) |
---|
807 | sm = ( rb1**(-1./3.) + ( 18*ra1*ra1 + 9.*ra1*ra2*(1.-rc2) )*sh*gh ) / (1.-9.*ra1*ra2*gh) |
---|
808 | ! |
---|
809 | ! Store stability function in avmu and avmv |
---|
810 | avmu(ji,jj,jk) = rc_diff * sh * tmask(ji,jj,jk) |
---|
811 | avmv(ji,jj,jk) = rc_diff * sm * tmask(ji,jj,jk) |
---|
812 | END DO |
---|
813 | END DO |
---|
814 | END DO |
---|
815 | ! |
---|
816 | CASE ( 2, 3 ) ! Canuto stability functions |
---|
817 | ! |
---|
818 | DO jk = 2, jpkm1 |
---|
819 | DO jj = 2, jpjm1 |
---|
820 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
821 | ! zcof = l²/q² |
---|
822 | zcof = mxlb(ji,jj,jk)**2. / ( 2.*eb(ji,jj,jk) ) |
---|
823 | ! Gh = -N²l²/q² |
---|
824 | gh = - rn2(ji,jj,jk) * zcof |
---|
825 | gh = MIN( gh, rgh0 ) |
---|
826 | gh = MAX( gh, rghmin ) |
---|
827 | gh = gh*rf6 |
---|
828 | ! Gm = M²l²/q² Shear number |
---|
829 | shr = shear(ji,jj,jk)/MAX(avm(ji,jj,jk), rsmall) |
---|
830 | gm = shr * zcof |
---|
831 | gm = MAX(gm, 1.e-10) |
---|
832 | gm = gm*rf6 |
---|
833 | gm = MIN ( (rd0 - rd1*gh + rd3*gh**2.)/(rd2-rd4*gh) , gm ) |
---|
834 | ! Stability functions from Canuto |
---|
835 | rcff = rd0 - rd1*gh +rd2*gm + rd3*gh**2. - rd4*gh*gm + rd5*gm**2. |
---|
836 | sm = (rs0 - rs1*gh + rs2*gm) / rcff |
---|
837 | sh = (rs4 - rs5*gh + rs6*gm) / rcff |
---|
838 | ! |
---|
839 | ! Store stability function in avmu and avmv |
---|
840 | avmu(ji,jj,jk) = rc_diff * sh * tmask(ji,jj,jk) |
---|
841 | avmv(ji,jj,jk) = rc_diff * sm * tmask(ji,jj,jk) |
---|
842 | END DO |
---|
843 | END DO |
---|
844 | END DO |
---|
845 | ! |
---|
846 | END SELECT |
---|
847 | |
---|
848 | ! Boundary conditions on stability functions for momentum (Neumann): |
---|
849 | ! Lines below are useless if GOTM style Dirichlet conditions are used |
---|
850 | DO jj = 2, jpjm1 |
---|
851 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
852 | avmv(ji,jj,1) = rcm_sf / SQRT(2.) |
---|
853 | END DO |
---|
854 | END DO |
---|
855 | DO jj = 2, jpjm1 |
---|
856 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
857 | ibot=mbathy(ji,jj) |
---|
858 | ibotm1=ibot-1 |
---|
859 | avmv(ji,jj,ibot) = rc0 / SQRT(2.) |
---|
860 | END DO |
---|
861 | END DO |
---|
862 | |
---|
863 | ! Compute diffusivities/viscosities |
---|
864 | ! The computation below could be restrained to jk=2 to jpkm1 if GOTM style Dirichlet conditions are used |
---|
865 | DO jk = 1, jpk |
---|
866 | DO jj = 2, jpjm1 |
---|
867 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
868 | zsqen = SQRT(2.*en(ji,jj,jk)) * mxln(ji,jj,jk) |
---|
869 | zav = zsqen * avmu(ji,jj,jk) |
---|
870 | avt(ji,jj,jk) = MAX(zav,avtb(jk))*tmask(ji,jj,jk) ! apply mask for zdfmxl routine |
---|
871 | zav = zsqen * avmv(ji,jj,jk) |
---|
872 | avm(ji,jj,jk) = MAX(zav,avmb(jk)) ! Note that avm is not masked at the surface and the bottom |
---|
873 | END DO |
---|
874 | END DO |
---|
875 | END DO |
---|
876 | |
---|
877 | ! |
---|
878 | ! Lateral boundary conditions (sign unchanged) |
---|
879 | ! |
---|
880 | avt(:,:,1) = 0. |
---|
881 | CALL lbc_lnk( avm, 'W', 1. ) ; CALL lbc_lnk( avt, 'W', 1. ) |
---|
882 | |
---|
883 | DO jk = 2, jpkm1 !* vertical eddy viscosity at u- and v-points |
---|
884 | DO jj = 2, jpjm1 |
---|
885 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
886 | avmu(ji,jj,jk) = ( avm (ji,jj,jk)*tmask(ji,jj,jk) + avm (ji+1,jj ,jk)*tmask(ji+1,jj ,jk) ) * umask(ji,jj,jk) & |
---|
887 | & / MAX( 1., tmask(ji,jj,jk) + tmask(ji+1,jj ,jk) ) |
---|
888 | avmv(ji,jj,jk) = ( avm (ji,jj,jk)*tmask(ji,jj,jk) + avm (ji ,jj+1,jk)*tmask(ji ,jj+1,jk) ) * vmask(ji,jj,jk) & |
---|
889 | & / MAX( 1., tmask(ji,jj,jk) + tmask(ji ,jj+1,jk) ) |
---|
890 | END DO |
---|
891 | END DO |
---|
892 | END DO |
---|
893 | |
---|
894 | avmu(:,:,1) = 0. |
---|
895 | avmv(:,:,1) = 0. |
---|
896 | |
---|
897 | CALL lbc_lnk( avmu, 'U', 1. ) ; CALL lbc_lnk( avmv, 'V', 1. ) ! Lateral boundary conditions |
---|
898 | |
---|
899 | IF(ln_ctl) THEN |
---|
900 | CALL prt_ctl( tab3d_1=en , clinfo1=' gls - e: ', tab3d_2=avt, clinfo2=' t: ', ovlap=1, kdim=jpk) |
---|
901 | CALL prt_ctl( tab3d_1=avmu, clinfo1=' gls - u: ', mask1=umask, & |
---|
902 | & tab3d_2=avmv, clinfo2= ' v: ', mask2=vmask, ovlap=1, kdim=jpk ) |
---|
903 | ENDIF |
---|
904 | ! |
---|
905 | END SUBROUTINE zdf_gls |
---|
906 | |
---|
907 | SUBROUTINE zdf_gls_init |
---|
908 | !!---------------------------------------------------------------------- |
---|
909 | !! *** ROUTINE zdf_gls_init *** |
---|
910 | !! |
---|
911 | !! ** Purpose : Initialization of the vertical eddy diffivity and |
---|
912 | !! viscosity when using a gls turbulent closure scheme |
---|
913 | !! |
---|
914 | !! ** Method : Read the namzdf_gls namelist and check the parameters |
---|
915 | !! called at the first timestep (nit000) |
---|
916 | !! |
---|
917 | !! ** input : Namlist namzdf_gls |
---|
918 | !! |
---|
919 | !! ** Action : Increase by 1 the nstop flag is setting problem encounter |
---|
920 | !! |
---|
921 | !!---------------------------------------------------------------------- |
---|
922 | USE dynzdf_exp |
---|
923 | USE trazdf_exp |
---|
924 | ! |
---|
925 | # if defined key_vectopt_memory |
---|
926 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
927 | # else |
---|
928 | INTEGER :: jk ! dummy loop indices |
---|
929 | # endif |
---|
930 | REAL(wp):: zcr |
---|
931 | !! |
---|
932 | NAMELIST/namzdf_gls/rn_emin, rn_epsmin, ln_length_lim, & |
---|
933 | & rn_clim_galp, ln_crban, ln_sigpsi, & |
---|
934 | & rn_crban, rn_charn, & |
---|
935 | & nn_tkebc_surf, nn_tkebc_bot, & |
---|
936 | & nn_psibc_surf, nn_psibc_bot, & |
---|
937 | & nn_stab_func, nn_clos |
---|
938 | !!---------------------------------------------------------- |
---|
939 | |
---|
940 | ! Read Namelist namzdf_gls |
---|
941 | ! ------------------------ |
---|
942 | REWIND ( numnam ) |
---|
943 | READ ( numnam, namzdf_gls ) |
---|
944 | |
---|
945 | ! Parameter control and print |
---|
946 | ! --------------------------- |
---|
947 | ! Control print |
---|
948 | IF(lwp) THEN |
---|
949 | WRITE(numout,*) |
---|
950 | WRITE(numout,*) 'zdf_gls_init : gls turbulent closure scheme' |
---|
951 | WRITE(numout,*) '~~~~~~~~~~~~' |
---|
952 | WRITE(numout,*) ' Namelist namzdf_gls : set gls mixing parameters' |
---|
953 | WRITE(numout,*) ' minimum value of en rn_emin = ', rn_emin |
---|
954 | WRITE(numout,*) ' minimum value of eps rn_epsmin = ', rn_epsmin |
---|
955 | WRITE(numout,*) ' Surface roughness (m) hsro = ', hsro |
---|
956 | WRITE(numout,*) ' Bottom roughness (m) rn_hbro = ', rn_hbro |
---|
957 | WRITE(numout,*) ' Limit dissipation rate under stable stratification ln_length_lim = ',ln_length_lim |
---|
958 | WRITE(numout,*) ' Galperin length scale limitation coef (Standard: 0.53, Holt: 0.26) rn_clim_galp = ', rn_clim_galp |
---|
959 | WRITE(numout,*) ' TKE Surface boundary condition nn_tkebc_surf = ', nn_tkebc_surf |
---|
960 | WRITE(numout,*) ' TKE Bottom boundary condition nn_tkebc_bot = ', nn_tkebc_bot |
---|
961 | WRITE(numout,*) ' PSI Surface boundary condition nn_psibc_surf = ', nn_psibc_surf |
---|
962 | WRITE(numout,*) ' PSI Bottom boundary condition nn_psibc_bot = ', nn_psibc_bot |
---|
963 | WRITE(numout,*) ' Craig and Banner scheme ln_crban = ', ln_crban |
---|
964 | WRITE(numout,*) ' Modify psi Schmidt number (wb case) ln_sigpsi = ', ln_sigpsi |
---|
965 | WRITE(numout,*) ' Craig and Banner coef. rn_crban = ', rn_crban |
---|
966 | WRITE(numout,*) ' Charnock coef. rn_charn = ', rn_charn |
---|
967 | WRITE(numout,*) ' Stability functions nn_stab_func = ',nn_stab_func |
---|
968 | WRITE(numout,*) ' Closure nn_clos = ',nn_clos |
---|
969 | WRITE(numout,*) |
---|
970 | ENDIF |
---|
971 | |
---|
972 | ! Check of some namelist values |
---|
973 | IF( nn_tkebc_surf < 0 .OR. nn_tkebc_surf > 1 ) CALL ctl_stop( 'bad flag: nn_tkebc_surf is 0 or 1' ) |
---|
974 | IF( nn_psibc_surf < 0 .OR. nn_psibc_surf > 1 ) CALL ctl_stop( 'bad flag: nn_psibc_surf is 0 or 1' ) |
---|
975 | IF( nn_tkebc_bot < 0 .OR. nn_tkebc_bot > 1 ) CALL ctl_stop( 'bad flag: nn_tkebc_bot is 0 or 1' ) |
---|
976 | IF( nn_psibc_bot < 0 .OR. nn_psibc_bot > 1 ) CALL ctl_stop( 'bad flag: nn_psibc_bot is 0 or 1' ) |
---|
977 | IF( nn_stab_func < 0 .OR. nn_stab_func > 3) CALL ctl_stop( 'bad flag: nn_stab_func is 0, 1, 2 and 3' ) |
---|
978 | IF( nn_clos < 0 .OR. nn_clos > 3) CALL ctl_stop( 'bad flag: nn_clos is 0, 1, 2 or 3' ) |
---|
979 | |
---|
980 | ! Initialisation of the parameters for the choosen closure |
---|
981 | ! -------------------------------------------------------- |
---|
982 | ! |
---|
983 | SELECT CASE ( nn_clos ) |
---|
984 | ! |
---|
985 | CASE( 0 ) ! k-kl (Mellor-Yamada) |
---|
986 | ! |
---|
987 | IF(lwp) WRITE(numout,*) 'The choosen closure is k-kl closed to the classical Mellor-Yamada' |
---|
988 | rpp = 0. |
---|
989 | rmm = 1. |
---|
990 | rnn = 1. |
---|
991 | rsc_tke = 1.96 |
---|
992 | rsc_psi = 1.96 |
---|
993 | rpsi1 = 0.9 |
---|
994 | rpsi3p = 1. |
---|
995 | rpsi2 = 0.5 |
---|
996 | ! |
---|
997 | SELECT CASE ( nn_stab_func ) |
---|
998 | ! |
---|
999 | CASE( 0, 1 ) ! G88 or KC stability functions |
---|
1000 | rpsi3m = 2.53 |
---|
1001 | CASE( 2 ) ! Canuto A stability functions |
---|
1002 | rpsi3m = 2.38 |
---|
1003 | CASE( 3 ) ! Canuto B stability functions |
---|
1004 | rpsi3m = 2.38 ! caution : constant not identified |
---|
1005 | END SELECT |
---|
1006 | ! |
---|
1007 | CASE( 1 ) ! k-eps |
---|
1008 | ! |
---|
1009 | IF(lwp) WRITE(numout,*) 'The choosen closure is k-eps' |
---|
1010 | rpp = 3. |
---|
1011 | rmm = 1.5 |
---|
1012 | rnn = -1. |
---|
1013 | rsc_tke = 1. |
---|
1014 | rsc_psi = 1.3 ! Schmidt number for psi |
---|
1015 | rpsi1 = 1.44 |
---|
1016 | rpsi3p = 1. |
---|
1017 | rpsi2 = 1.92 |
---|
1018 | ! |
---|
1019 | SELECT CASE ( nn_stab_func ) |
---|
1020 | ! |
---|
1021 | CASE( 0, 1 ) ! G88 or KC stability functions |
---|
1022 | rpsi3m = -0.52 |
---|
1023 | CASE( 2 ) ! Canuto A stability functions |
---|
1024 | rpsi3m = -0.629 |
---|
1025 | CASE( 3 ) ! Canuto B stability functions |
---|
1026 | rpsi3m = -0.566 |
---|
1027 | END SELECT |
---|
1028 | ! |
---|
1029 | CASE( 2 ) ! k-omega |
---|
1030 | ! |
---|
1031 | IF(lwp) WRITE(numout,*) 'The choosen closure is k-omega' |
---|
1032 | rpp = -1. |
---|
1033 | rmm = 0.5 |
---|
1034 | rnn = -1. |
---|
1035 | rsc_tke = 2. |
---|
1036 | rsc_psi = 2. |
---|
1037 | rpsi1 = 0.555 |
---|
1038 | rpsi3p = 1. |
---|
1039 | rpsi2 = 0.833 |
---|
1040 | ! |
---|
1041 | SELECT CASE ( nn_stab_func ) |
---|
1042 | ! |
---|
1043 | CASE( 0, 1 ) ! G88 or KC stability functions |
---|
1044 | rpsi3m = -0.58 |
---|
1045 | CASE( 2 ) ! Canuto A stability functions |
---|
1046 | rpsi3m = -0.64 |
---|
1047 | CASE( 3 ) ! Canuto B stability functions |
---|
1048 | rpsi3m = -0.64 ! caution : constant not identified |
---|
1049 | END SELECT |
---|
1050 | ! |
---|
1051 | CASE( 3 ) ! gen |
---|
1052 | ! |
---|
1053 | IF(lwp) WRITE(numout,*) 'The choosen closure is generic' |
---|
1054 | rpp = 2. |
---|
1055 | rmm = 1. |
---|
1056 | rnn = -0.67 |
---|
1057 | rsc_tke = 0.8 |
---|
1058 | rsc_psi = 1.07 |
---|
1059 | rpsi1 = 1. |
---|
1060 | rpsi3p = 1. |
---|
1061 | rpsi2 = 1.22 |
---|
1062 | ! |
---|
1063 | SELECT CASE ( nn_stab_func ) |
---|
1064 | ! |
---|
1065 | CASE( 0, 1 ) ! G88 or KC stability functions |
---|
1066 | rpsi3m = 0.1 |
---|
1067 | CASE( 2 ) ! Canuto A stability functions |
---|
1068 | rpsi3m = 0.05 |
---|
1069 | CASE( 3 ) ! Canuto B stability functions |
---|
1070 | rpsi3m = 0.05 ! caution : constant not identified |
---|
1071 | END SELECT |
---|
1072 | ! |
---|
1073 | END SELECT |
---|
1074 | |
---|
1075 | ! Initialisation of the parameters of the stability functions |
---|
1076 | ! ----------------------------------------------------------- |
---|
1077 | ! |
---|
1078 | SELECT CASE ( nn_stab_func ) |
---|
1079 | ! |
---|
1080 | CASE ( 0 ) ! Galperin stability functions |
---|
1081 | ! |
---|
1082 | IF(lwp) WRITE(numout,*) 'Stability functions from Galperin' |
---|
1083 | rc2 = 0. |
---|
1084 | rc3 = 0. |
---|
1085 | rc_diff = 1. |
---|
1086 | rc0 = 0.5544 |
---|
1087 | rcm_sf = 0.9884 |
---|
1088 | rghmin = -0.28 |
---|
1089 | rgh0 = 0.0233 |
---|
1090 | rghcri = 0.02 |
---|
1091 | ! |
---|
1092 | CASE ( 1 ) ! Kantha-Clayson stability functions |
---|
1093 | ! |
---|
1094 | IF(lwp) WRITE(numout,*) 'Stability functions from Kantha-Clayson' |
---|
1095 | rc2 = 0.7 |
---|
1096 | rc3 = 0.2 |
---|
1097 | rc_diff = 1. |
---|
1098 | rc0 = 0.5544 |
---|
1099 | rcm_sf = 0.9884 |
---|
1100 | rghmin = -0.28 |
---|
1101 | rgh0 = 0.0233 |
---|
1102 | rghcri = 0.02 |
---|
1103 | ! |
---|
1104 | CASE ( 2 ) ! Canuto A stability functions |
---|
1105 | ! |
---|
1106 | IF(lwp) WRITE(numout,*) 'Stability functions from Canuto A' |
---|
1107 | rs0 = 1.5*rl1*rl5**2. |
---|
1108 | rs1 = -rl4*(rl6+rl7) + 2.*rl4*rl5*(rl1-(1./3.)*rl2-rl3)+1.5*rl1*rl5*rl8 |
---|
1109 | rs2 = -(3./8.)*rl1*(rl6**2.-rl7**2.) |
---|
1110 | rs4 = 2.*rl5 |
---|
1111 | rs5 = 2.*rl4 |
---|
1112 | rs6 = (2./3.)*rl5*(3.*rl3**2.-rl2**2.)-0.5*rl5*rl1*(3.*rl3-rl2)+0.75*rl1*(rl6-rl7) |
---|
1113 | rd0 = 3*rl5**2. |
---|
1114 | rd1 = rl5*(7.*rl4+3.*rl8) |
---|
1115 | rd2 = rl5**2.*(3.*rl3**2.-rl2**2.)-0.75*(rl6**2.-rl7**2.) |
---|
1116 | rd3 = rl4*(4.*rl4+3.*rl8) |
---|
1117 | rd4 = rl4*(rl2*rl6-3.*rl3*rl7-rl5*(rl2**2.-rl3**2.))+rl5*rl8*(3.*rl3**2.-rl2**2.) |
---|
1118 | rd5 = 0.25*(rl2**2.-3.*rl3**2.)*(rl6**2.-rl7**2.) |
---|
1119 | rc0 = 0.5268 |
---|
1120 | rf6 = 8. / (rc0**6.) |
---|
1121 | rc_diff = SQRT(2.)/(rc0**3.) |
---|
1122 | rcm_sf = 0.7310 |
---|
1123 | rghmin = -0.28 |
---|
1124 | rgh0 = 0.0329 |
---|
1125 | rghcri = 0.03 |
---|
1126 | ! |
---|
1127 | CASE ( 3 ) ! Canuto B stability functions |
---|
1128 | ! |
---|
1129 | IF(lwp) WRITE(numout,*) 'Stability functions from Canuto B' |
---|
1130 | rs0 = 1.5*rm1*rm5**2. |
---|
1131 | rs1 = -rm4*(rm6+rm7) + 2.*rm4*rm5*(rm1-(1./3.)*rm2-rm3)+1.5*rm1*rm5*rm8 |
---|
1132 | rs2 = -(3./8.)*rm1*(rm6**2.-rm7**2.) |
---|
1133 | rs4 = 2.*rm5 |
---|
1134 | rs5 = 2.*rm4 |
---|
1135 | rs6 = (2./3.)*rm5*(3.*rm3**2.-rm2**2.)-0.5*rm5*rm1*(3.*rm3-rm2)+0.75*rm1*(rm6-rm7) |
---|
1136 | rd0 = 3*rm5**2. |
---|
1137 | rd1 = rm5*(7.*rm4+3.*rm8) |
---|
1138 | rd2 = rm5**2.*(3.*rm3**2.-rm2**2.)-0.75*(rm6**2.-rm7**2.) |
---|
1139 | rd3 = rm4*(4.*rm4+3.*rm8) |
---|
1140 | rd4 = rm4*(rm2*rm6-3.*rm3*rm7-rm5*(rm2**2.-rm3**2.))+rm5*rm8*(3.*rm3**2.-rm2**2.) |
---|
1141 | rd5 = 0.25*(rm2**2.-3.*rm3**2.)*(rm6**2.-rm7**2.) |
---|
1142 | rc0 = 0.5268 !! rc0 = 0.5540 (Warner ...) to verify ! |
---|
1143 | rf6 = 8. / (rc0**6.) |
---|
1144 | rc_diff = SQRT(2.)/(rc0**3.) |
---|
1145 | rcm_sf = 0.7470 |
---|
1146 | rghmin = -0.28 |
---|
1147 | rgh0 = 0.0444 |
---|
1148 | rghcri = 0.0414 |
---|
1149 | ! |
---|
1150 | END SELECT |
---|
1151 | |
---|
1152 | ! Set Schmidt number for psi diffusion |
---|
1153 | ! In the wave breaking case |
---|
1154 | ! See equation 13 of Carniel et al, Ocean modelling, 30, 225-239, 2009 |
---|
1155 | ! or equation (17) of Burchard, JPO, 31, 3133-3145, 2001 |
---|
1156 | IF ((ln_sigpsi).AND.(ln_crban)) THEN |
---|
1157 | zcr = SQRT(1.5*rsc_tke) * rcm_sf /vkarmn |
---|
1158 | rsc_psi0 = vkarmn**2/(rpsi2*rcm_sf**2) * & |
---|
1159 | & ( rnn**2 - 4./3.*zcr*rnn*rmm - 1./3.*zcr*rnn & |
---|
1160 | & + 2./9.*rmm*zcr**2 + 4./9.*zcr**2*rmm**2) |
---|
1161 | ELSE |
---|
1162 | rsc_psi0 = rsc_psi |
---|
1163 | ENDIF |
---|
1164 | |
---|
1165 | ! Shear free turbulence parameters: |
---|
1166 | ! |
---|
1167 | ra_sf = -4.*rnn*SQRT(rsc_tke) / ( (1.+4.*rmm)*SQRT(rsc_tke) & |
---|
1168 | & - SQRT(rsc_tke + 24.*rsc_psi0*rpsi2 ) ) |
---|
1169 | rl_sf = rc0 * SQRT(rc0/rcm_sf) * SQRT( ( (1. + 4.*rmm + 8.*rmm**2)*rsc_tke & |
---|
1170 | & + 12. * rsc_psi0*rpsi2 - (1. + 4.*rmm) & |
---|
1171 | & *SQRT(rsc_tke*(rsc_tke & |
---|
1172 | & + 24.*rsc_psi0*rpsi2)) ) & |
---|
1173 | & /(12.*rnn**2.) & |
---|
1174 | & ) |
---|
1175 | |
---|
1176 | ! Control print |
---|
1177 | ! |
---|
1178 | IF(lwp) THEN |
---|
1179 | WRITE(numout,*) |
---|
1180 | WRITE(numout,*) 'Limit values' |
---|
1181 | WRITE(numout,*) '~~~~~~~~~~~~' |
---|
1182 | WRITE(numout,*) 'Parameter m = ',rmm |
---|
1183 | WRITE(numout,*) 'Parameter n = ',rnn |
---|
1184 | WRITE(numout,*) 'Parameter p = ',rpp |
---|
1185 | WRITE(numout,*) 'rpsi1 = ',rpsi1 |
---|
1186 | WRITE(numout,*) 'rpsi2 = ',rpsi2 |
---|
1187 | WRITE(numout,*) 'rpsi3m = ',rpsi3m |
---|
1188 | WRITE(numout,*) 'rpsi3p = ',rpsi3p |
---|
1189 | WRITE(numout,*) 'rsc_tke = ',rsc_tke |
---|
1190 | WRITE(numout,*) 'rsc_psi = ',rsc_psi |
---|
1191 | WRITE(numout,*) 'rsc_psi0 = ',rsc_psi0 |
---|
1192 | WRITE(numout,*) 'rc0 = ',rc0 |
---|
1193 | WRITE(numout,*) |
---|
1194 | WRITE(numout,*) 'Shear free turbulence parameters:' |
---|
1195 | WRITE(numout,*) 'rcm_sf = ',rcm_sf |
---|
1196 | WRITE(numout,*) 'ra_sf = ',ra_sf |
---|
1197 | WRITE(numout,*) 'rl_sf = ',rl_sf |
---|
1198 | WRITE(numout,*) |
---|
1199 | ENDIF |
---|
1200 | |
---|
1201 | ! Constants initialization |
---|
1202 | rc02r = 1. / rc0**2. |
---|
1203 | rc02 = rc0**2._wp |
---|
1204 | rc03 = rc0**3._wp |
---|
1205 | rc04 = rc0**4._wp |
---|
1206 | rc03_sqrt2_galp = rc03 / SQRT(2._wp) / rn_clim_galp |
---|
1207 | rsbc_mb = 0.5 * (15.8*rn_crban)**(2./3.) ! Surf. bound. cond. from Mellor and Blumberg |
---|
1208 | rsbc_std = 3.75 ! Surf. bound. cond. standard (prod=diss) |
---|
1209 | rsbc_tke1 = (-rsc_tke*rn_crban/(rcm_sf*ra_sf*rl_sf))**(2./3.) ! k_eps = 53. Dirichlet + Wave breaking |
---|
1210 | rsbc_tke2 = 0.5 / rau0 |
---|
1211 | rsbc_tke3 = rdt * rn_crban ! Neumann + Wave breaking |
---|
1212 | rsbc_zs = rn_charn/grav ! Charnock formula |
---|
1213 | rsbc_psi1 = rc0**rpp * rsbc_tke1**rmm * rl_sf**rnn ! Dirichlet + Wave breaking |
---|
1214 | rsbc_psi2 = -0.5 * rdt * rc0**rpp * rnn * vkarmn**rnn / rsc_psi ! Neumann + NO Wave breaking |
---|
1215 | rsbc_psi3 = -0.5 * rdt * rc0**rpp * rl_sf**rnn / rsc_psi * (rnn + rmm*ra_sf) ! Neumann + Wave breaking |
---|
1216 | rfact_tke = -0.5 / rsc_tke * rdt ! Cst used for the Diffusion term of tke |
---|
1217 | rfact_psi = -0.5 / rsc_psi * rdt ! Cst used for the Diffusion term of tke |
---|
1218 | |
---|
1219 | ! Wall proximity function |
---|
1220 | zwall (:,:,:) = 1._wp * tmask(:,:,:) |
---|
1221 | |
---|
1222 | ! !* set vertical eddy coef. to the background value |
---|
1223 | DO jk = 1, jpk |
---|
1224 | avt (:,:,jk) = avtb(jk) * tmask(:,:,jk) |
---|
1225 | avm (:,:,jk) = avmb(jk) * tmask(:,:,jk) |
---|
1226 | avmu(:,:,jk) = avmb(jk) * umask(:,:,jk) |
---|
1227 | avmv(:,:,jk) = avmb(jk) * vmask(:,:,jk) |
---|
1228 | END DO |
---|
1229 | ! !* read or initialize all required files |
---|
1230 | CALL gls_rst( nit000, 'READ' ) |
---|
1231 | ! |
---|
1232 | END SUBROUTINE zdf_gls_init |
---|
1233 | |
---|
1234 | SUBROUTINE gls_rst( kt, cdrw ) |
---|
1235 | !!--------------------------------------------------------------------- |
---|
1236 | !! *** ROUTINE ts_rst *** |
---|
1237 | !! |
---|
1238 | !! ** Purpose : Read or write TKE file (en) in restart file |
---|
1239 | !! |
---|
1240 | !! ** Method : use of IOM library |
---|
1241 | !! if the restart does not contain TKE, en is either |
---|
1242 | !! set to rn_emin or recomputed (nn_igls/=0) |
---|
1243 | !!---------------------------------------------------------------------- |
---|
1244 | INTEGER , INTENT(in) :: kt ! ocean time-step |
---|
1245 | CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag |
---|
1246 | ! |
---|
1247 | INTEGER :: jit, jk ! dummy loop indices |
---|
1248 | INTEGER :: id1, id2, id3, id4, id5, id6, id7, id8 |
---|
1249 | INTEGER :: ji, jj, ikbu, ikbv, ikbum1, ikbvm1 |
---|
1250 | REAL(wp):: cbx, cby |
---|
1251 | !!---------------------------------------------------------------------- |
---|
1252 | ! |
---|
1253 | IF( TRIM(cdrw) == 'READ' ) THEN ! Read/initialise |
---|
1254 | ! ! --------------- |
---|
1255 | IF( ln_rstart ) THEN !* Read the restart file |
---|
1256 | id1 = iom_varid( numror, 'en' , ldstop = .FALSE. ) |
---|
1257 | id2 = iom_varid( numror, 'avt' , ldstop = .FALSE. ) |
---|
1258 | id3 = iom_varid( numror, 'avm' , ldstop = .FALSE. ) |
---|
1259 | id4 = iom_varid( numror, 'avmu' , ldstop = .FALSE. ) |
---|
1260 | id5 = iom_varid( numror, 'avmv' , ldstop = .FALSE. ) |
---|
1261 | id6 = iom_varid( numror, 'mxln' , ldstop = .FALSE. ) |
---|
1262 | id7 = iom_varid( numror, 'wbotu', ldstop = .FALSE. ) |
---|
1263 | id8 = iom_varid( numror, 'wbotv', ldstop = .FALSE. ) |
---|
1264 | ! |
---|
1265 | IF( MIN( id1, id2, id3, id4, id5, id6, id7, id8 ) > 0 ) THEN ! all required arrays exist |
---|
1266 | CALL iom_get( numror, jpdom_autoglo, 'en' , en ) |
---|
1267 | CALL iom_get( numror, jpdom_autoglo, 'avt' , avt ) |
---|
1268 | CALL iom_get( numror, jpdom_autoglo, 'avm' , avm ) |
---|
1269 | CALL iom_get( numror, jpdom_autoglo, 'avmu' , avmu ) |
---|
1270 | CALL iom_get( numror, jpdom_autoglo, 'avmv' , avmv ) |
---|
1271 | CALL iom_get( numror, jpdom_autoglo, 'mxln' , mxln ) |
---|
1272 | CALL iom_get( numror, jpdom_autoglo, 'wbotu' , wbotu ) |
---|
1273 | CALL iom_get( numror, jpdom_autoglo, 'wbotv' , wbotv ) |
---|
1274 | ELSE |
---|
1275 | IF(lwp) WRITE(numout,*) ' ===>>>> : previous run without gls scheme, en and mxln computed by iterative loop' |
---|
1276 | IF(lwp) WRITE(numout,*) ' ===>>>> : The bottom stresses are estimated' |
---|
1277 | en (:,:,:) = rn_emin |
---|
1278 | mxln(:,:,:) = 0.001 |
---|
1279 | ! Initialize bottom stresses |
---|
1280 | DO jj = 2, jpjm1 |
---|
1281 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
1282 | ikbu = MIN( mbathy(ji+1,jj ), mbathy(ji,jj) ) |
---|
1283 | ikbum1 = MAX( ikbu-1, 1 ) |
---|
1284 | ikbv = MIN( mbathy(ji,jj+1), mbathy(ji,jj) ) |
---|
1285 | ikbvm1 = MAX( ikbv-1, 1 ) |
---|
1286 | cbx = avmu(ji,jj,ikbu) / fse3uw(ji,jj,ikbu) |
---|
1287 | cby = avmv(ji,jj,ikbv) / fse3vw(ji,jj,ikbv) |
---|
1288 | wbotu(ji,jj) = -cbx * un(ji,jj,ikbum1)*umask(ji,jj,1) |
---|
1289 | wbotv(ji,jj) = -cby * vn(ji,jj,ikbvm1)*vmask(ji,jj,1) |
---|
1290 | END DO |
---|
1291 | END DO |
---|
1292 | DO jit = nit000 + 1, nit000 + 10 ; CALL zdf_gls( jit ) ; END DO |
---|
1293 | ENDIF |
---|
1294 | ELSE !* Start from rest |
---|
1295 | IF(lwp) WRITE(numout,*) ' ===>>>> : Initialisation of en and mxln by background values' |
---|
1296 | IF(lwp) WRITE(numout,*) ' ===>>>> : The bottom stresses are estimated' |
---|
1297 | en (:,:,:) = rn_emin |
---|
1298 | mxln(:,:,:) = 0.001 |
---|
1299 | ! Initialize bottom stresses |
---|
1300 | DO jj = 2, jpjm1 |
---|
1301 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
1302 | ikbu = MIN( mbathy(ji+1,jj ), mbathy(ji,jj) ) |
---|
1303 | ikbum1 = MAX( ikbu-1, 1 ) |
---|
1304 | ikbv = MIN( mbathy(ji,jj+1), mbathy(ji,jj) ) |
---|
1305 | ikbvm1 = MAX( ikbv-1, 1 ) |
---|
1306 | cbx = avmu(ji,jj,ikbu) / fse3uw(ji,jj,ikbu) |
---|
1307 | cby = avmv(ji,jj,ikbv) / fse3vw(ji,jj,ikbv) |
---|
1308 | wbotu(ji,jj) = -cbx * un(ji,jj,ikbum1)*umask(ji,jj,1) |
---|
1309 | wbotv(ji,jj) = -cby * vn(ji,jj,ikbvm1)*vmask(ji,jj,1) |
---|
1310 | END DO |
---|
1311 | END DO |
---|
1312 | ENDIF |
---|
1313 | ! |
---|
1314 | ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN ! Create restart file |
---|
1315 | ! ! ------------------- |
---|
1316 | IF(lwp) WRITE(numout,*) '---- gls-rst ----' |
---|
1317 | CALL iom_rstput( kt, nitrst, numrow, 'en' , en ) |
---|
1318 | CALL iom_rstput( kt, nitrst, numrow, 'avt' , avt ) |
---|
1319 | CALL iom_rstput( kt, nitrst, numrow, 'avm' , avm ) |
---|
1320 | CALL iom_rstput( kt, nitrst, numrow, 'avmu' , avmu ) |
---|
1321 | CALL iom_rstput( kt, nitrst, numrow, 'avmv' , avmv ) |
---|
1322 | CALL iom_rstput( kt, nitrst, numrow, 'mxln' , mxln ) |
---|
1323 | ! |
---|
1324 | ENDIF |
---|
1325 | ! |
---|
1326 | END SUBROUTINE gls_rst |
---|
1327 | |
---|
1328 | #else |
---|
1329 | !!---------------------------------------------------------------------- |
---|
1330 | !! Dummy module : NO TKE scheme |
---|
1331 | !!---------------------------------------------------------------------- |
---|
1332 | LOGICAL, PUBLIC, PARAMETER :: lk_zdfgls = .FALSE. !: TKE flag |
---|
1333 | CONTAINS |
---|
1334 | SUBROUTINE zdf_gls( kt ) ! Empty routine |
---|
1335 | WRITE(*,*) 'zdf_gls: You should not have seen this print! error?', kt |
---|
1336 | END SUBROUTINE zdf_gls |
---|
1337 | SUBROUTINE gls_rst( kt,cdrw ) ! Empty routine |
---|
1338 | INTEGER , INTENT(in) :: kt ! ocean time-step |
---|
1339 | CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag |
---|
1340 | WRITE(*,*) 'gls_Rst: You should not have seen this print! error?', kt, cdrw |
---|
1341 | END SUBROUTINE gls_rst |
---|
1342 | #endif |
---|
1343 | |
---|
1344 | !!====================================================================== |
---|
1345 | END MODULE zdfgls |
---|