1 | MODULE ldfdyn |
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2 | !!====================================================================== |
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3 | !! *** MODULE ldfdyn *** |
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4 | !! Ocean physics: lateral viscosity coefficient |
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5 | !!===================================================================== |
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6 | |
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7 | !!---------------------------------------------------------------------- |
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8 | !! ldf_dyn_init : initialization, namelist read, and parameters control |
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9 | !! ldf_dyn_c3d : 3D eddy viscosity coefficient initialization |
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10 | !! ldf_dyn_c2d : 2D eddy viscosity coefficient initialization |
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11 | !! ldf_dyn_c1d : 1D eddy viscosity coefficient initialization |
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12 | !!---------------------------------------------------------------------- |
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13 | !! * Modules used |
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14 | USE oce ! ocean dynamics and tracers |
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15 | USE dom_oce ! ocean space and time domain |
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16 | USE ldfdyn_oce ! ocean dynamics lateral physics |
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17 | USE phycst ! physical constants |
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18 | USE ldfslp ! ??? |
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19 | USE in_out_manager ! I/O manager |
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20 | USE lib_mpp ! distribued memory computing library |
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21 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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22 | |
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23 | IMPLICIT NONE |
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24 | PRIVATE |
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25 | |
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26 | !! * Routine accessibility |
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27 | PUBLIC ldf_dyn_init ! called by opa.F90 |
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28 | |
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29 | INTERFACE ldf_zpf |
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30 | MODULE PROCEDURE ldf_zpf_1d, ldf_zpf_1d_3d, ldf_zpf_3d |
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31 | END INTERFACE |
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32 | |
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33 | !! * Substitutions |
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34 | # include "domzgr_substitute.h90" |
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35 | !!---------------------------------------------------------------------- |
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36 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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37 | !! $Id: ldfdyn.F90 1152 2008-06-26 14:11:13Z rblod $ |
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38 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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39 | !!---------------------------------------------------------------------- |
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40 | |
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41 | CONTAINS |
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42 | |
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43 | SUBROUTINE ldf_dyn_init |
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44 | !!---------------------------------------------------------------------- |
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45 | !! *** ROUTINE ldf_dyn_init *** |
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46 | !! |
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47 | !! ** Purpose : set the horizontal ocean dynamics physics |
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48 | !! |
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49 | !! ** Method : |
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50 | !! Eddy viscosity coefficients: |
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51 | !! default option : constant coef. ahm0 (namelist) |
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52 | !! 'key_dynldf_c1d': depth dependent coef. defined in |
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53 | !! in ldf_dyn_c1d routine |
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54 | !! 'key_dynldf_c2d': latitude and longitude dependent coef. |
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55 | !! defined in ldf_dyn_c2d routine |
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56 | !! 'key_dynldf_c3d': latitude, longitude, depth dependent coef. |
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57 | !! defined in ldf_dyn_c3d routine |
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58 | !! N.B. User defined include files. By default, 3d and 2d coef. |
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59 | !! are set to a constant value given in the namelist and the 1d |
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60 | !! coefficients are initialized to a hyperbolic tangent vertical |
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61 | !! profile. |
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62 | !! |
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63 | !! Bilaplacian and laplacian schemes can be used together. |
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64 | !! If both are used, bilap uses constant coefficient, ahm0_blp. |
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65 | !! If only bilap is used, its coefficient can vary spatially and |
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66 | !! if new variable ahm0_blp is not set by namelist, then ahm0 is |
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67 | !! used as before for backward compatability. |
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68 | !! |
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69 | !! Reference : |
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70 | !! Madec, G. and M. Imbard, 1996, A global ocean mesh to overcome |
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71 | !! the North Pole singularity, Climate Dynamics, 12, 381-388. |
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72 | !! |
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73 | !! History : |
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74 | !! ! 07-97 (G. Madec) from inimix.F split in 2 routines |
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75 | !! ! 08-97 (G. Madec) multi dimensional coefficients |
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76 | !! 8.5 ! 02-09 (G. Madec) F90: Free form and module |
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77 | !!---------------------------------------------------------------------- |
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78 | !! * Modules used |
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79 | USE ioipsl |
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80 | |
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81 | !! * Local declarations |
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82 | INTEGER :: ioptio ! ??? |
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83 | LOGICAL :: ll_print = .FALSE. ! Logical flag for printing viscosity coef. |
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84 | |
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85 | |
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86 | NAMELIST/nam_dynldf/ ln_dynldf_lap , ln_dynldf_bilap, & |
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87 | & ln_dynldf_level, ln_dynldf_hor, ln_dynldf_iso, & |
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88 | & ahm0, ahmb0, ahm0_blp |
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89 | !!---------------------------------------------------------------------- |
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90 | |
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91 | |
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92 | ! Define the lateral physics parameters |
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93 | ! ====================================== |
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94 | |
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95 | ! Read Namelist nam_dynldf : Lateral physics |
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96 | REWIND( numnam ) |
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97 | READ ( numnam, nam_dynldf ) |
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98 | |
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99 | ! Parameter print |
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100 | IF(lwp) THEN |
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101 | WRITE(numout,*) |
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102 | WRITE(numout,*) 'ldf_dyn : lateral momentum physics' |
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103 | WRITE(numout,*) '~~~~~~~' |
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104 | WRITE(numout,*) ' Namelist nam_dynldf : set lateral mixing parameters' |
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105 | WRITE(numout,*) ' laplacian operator ln_dynldf_lap = ', ln_dynldf_lap |
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106 | WRITE(numout,*) ' bilaplacian operator ln_dynldf_bilap = ', ln_dynldf_bilap |
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107 | WRITE(numout,*) ' iso-level ln_dynldf_level = ', ln_dynldf_level |
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108 | WRITE(numout,*) ' horizontal (geopotential) ln_dynldf_hor = ', ln_dynldf_hor |
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109 | WRITE(numout,*) ' iso-neutral ln_dynldf_iso = ', ln_dynldf_iso |
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110 | WRITE(numout,*) ' horizontal laplacian eddy viscosity ahm0 = ', ahm0 |
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111 | WRITE(numout,*) ' background laplacian viscosity ahmb0 = ', ahmb0 |
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112 | WRITE(numout,*) ' horizontal eddy viscosity (bilap) ahm0_blp = ', ahm0_blp |
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113 | ENDIF |
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114 | |
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115 | ! ... check of lateral diffusive operator on tracers |
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116 | ! ==> will be done in trazdf module |
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117 | |
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118 | ! ... Space variation of eddy coefficients |
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119 | ioptio = 0 |
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120 | #if defined key_dynldf_c3d |
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121 | IF(lwp) WRITE(numout,*) ' momentum mixing coef. = F( latitude, longitude, depth)' |
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122 | ioptio = ioptio+1 |
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123 | #endif |
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124 | #if defined key_dynldf_c2d |
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125 | IF(lwp) WRITE(numout,*) ' momentum mixing coef. = F( latitude, longitude)' |
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126 | ioptio = ioptio+1 |
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127 | #endif |
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128 | #if defined key_dynldf_c1d |
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129 | IF(lwp) WRITE(numout,*) ' momentum mixing coef. = F( depth )' |
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130 | ioptio = ioptio+1 |
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131 | IF( ln_sco ) CALL ctl_stop( ' key_dynldf_c1d cannot be used in s-coordinate (ln_sco)' ) |
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132 | #endif |
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133 | IF( ioptio == 0 ) THEN |
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134 | IF(lwp) WRITE(numout,*) ' momentum mixing coef. = constant (default option)' |
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135 | ELSEIF( ioptio > 1 ) THEN |
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136 | CALL ctl_stop( ' use only one of the following keys:', & |
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137 | & ' key_dynldf_c3d, key_dynldf_c2d, key_dynldf_c1d' ) |
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138 | ENDIF |
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139 | |
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140 | |
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141 | IF( ln_dynldf_bilap ) THEN |
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142 | IF(lwp) WRITE(numout,*) ' biharmonic momentum diffusion' |
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143 | |
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144 | IF( ahm0_blp == 0.0 ) ahm0_blp = ahm0 ! Old namelist method: bilap specified with ahm0 |
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145 | |
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146 | IF( .NOT. ln_dynldf_lap ) ahm0 = ahm0_blp ! Allow spatially varying coefs, which use ahm0 as input |
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147 | |
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148 | IF( ahm0_blp > 0 .AND. .NOT. lk_esopa ) & |
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149 | & CALL ctl_stop( 'The horizontal viscosity coef. ahm0 must be negative' ) |
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150 | ENDIF |
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151 | IF( ln_dynldf_lap ) THEN |
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152 | IF(lwp) WRITE(numout,*) ' harmonic momentum diff. (default)' |
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153 | IF( ahm0 < 0 .AND. .NOT. lk_esopa ) & |
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154 | & CALL ctl_stop( ' The horizontal viscosity coef. ahm0 must be positive' ) |
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155 | ENDIF |
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156 | |
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157 | |
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158 | ! Lateral eddy viscosity |
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159 | ! ====================== |
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160 | |
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161 | #if defined key_dynldf_c3d |
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162 | CALL ldf_dyn_c3d( ll_print ) ! ahm = 3D coef. = F( longitude, latitude, depth ) |
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163 | #elif defined key_dynldf_c2d |
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164 | CALL ldf_dyn_c2d( ll_print ) ! ahm = 1D coef. = F( longitude, latitude ) |
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165 | #elif defined key_dynldf_c1d |
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166 | CALL ldf_dyn_c1d( ll_print ) ! ahm = 1D coef. = F( depth ) |
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167 | #else |
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168 | ! Constant coefficients |
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169 | IF(lwp) WRITE(numout,*) |
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170 | IF(lwp) WRITE(numout,*) 'inildf: constant eddy viscosity coef. ' |
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171 | IF(lwp) WRITE(numout,*) '~~~~~~' |
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172 | IF(lwp) WRITE(numout,*) ' ahm1 = ahm2 = ahm0 = ',ahm0 |
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173 | #endif |
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174 | |
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175 | END SUBROUTINE ldf_dyn_init |
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176 | |
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177 | #if defined key_dynldf_c3d |
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178 | # include "ldfdyn_c3d.h90" |
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179 | #elif defined key_dynldf_c2d |
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180 | # include "ldfdyn_c2d.h90" |
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181 | #elif defined key_dynldf_c1d |
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182 | # include "ldfdyn_c1d.h90" |
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183 | #endif |
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184 | |
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185 | |
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186 | SUBROUTINE ldf_zpf_1d( ld_print, pdam, pwam, pbot, pdep, pah ) |
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187 | !!---------------------------------------------------------------------- |
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188 | !! *** ROUTINE ldf_zpf *** |
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189 | !! |
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190 | !! ** Purpose : vertical adimensional profile for eddy coefficient |
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191 | !! |
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192 | !! ** Method : 1D eddy viscosity coefficients ( depth ) |
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193 | !! |
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194 | !!---------------------------------------------------------------------- |
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195 | !! * Arguments |
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196 | LOGICAL , INTENT (in ) :: ld_print ! If true, output arrays on numout |
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197 | REAL(wp), INTENT (in ) :: & |
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198 | pdam, & ! depth of the inflection point |
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199 | pwam, & ! width of inflection |
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200 | pbot ! battom value (0<pbot<= 1) |
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201 | REAL(wp), INTENT (in ), DIMENSION(jpk) :: & |
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202 | pdep ! depth of the gridpoint (T, U, V, F) |
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203 | REAL(wp), INTENT (inout), DIMENSION(jpk) :: & |
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204 | pah ! adimensional vertical profile |
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205 | |
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206 | !! * Local variables |
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207 | INTEGER :: jk ! dummy loop indices |
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208 | REAL(wp) :: zm00, zm01, zmhb, zmhs ! temporary scalars |
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209 | !!---------------------------------------------------------------------- |
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210 | |
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211 | zm00 = TANH( ( pdam - gdept_0(1 ) ) / pwam ) |
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212 | zm01 = TANH( ( pdam - gdept_0(jpkm1) ) / pwam ) |
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213 | zmhs = zm00 / zm01 |
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214 | zmhb = ( 1.e0 - pbot ) / ( 1.e0 - zmhs ) / zm01 |
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215 | |
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216 | DO jk = 1, jpk |
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217 | pah(jk) = 1.e0 + zmhb * ( zm00 - TANH( ( pdam - pdep(jk) ) / pwam ) ) |
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218 | END DO |
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219 | |
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220 | ! Control print |
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221 | IF(lwp .AND. ld_print ) THEN |
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222 | WRITE(numout,*) |
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223 | WRITE(numout,*) ' ahm profile : ' |
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224 | WRITE(numout,*) |
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225 | WRITE(numout,'(" jk ahm "," depth t-level " )') |
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226 | DO jk = 1, jpk |
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227 | WRITE(numout,'(i6,2f12.4,3x,2f12.4)') jk, pah(jk), pdep(jk) |
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228 | END DO |
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229 | ENDIF |
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230 | |
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231 | END SUBROUTINE ldf_zpf_1d |
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232 | |
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233 | |
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234 | SUBROUTINE ldf_zpf_1d_3d( ld_print, pdam, pwam, pbot, pdep, pah ) |
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235 | !!---------------------------------------------------------------------- |
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236 | !! *** ROUTINE ldf_zpf *** |
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237 | !! |
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238 | !! ** Purpose : vertical adimensional profile for eddy coefficient |
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239 | !! |
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240 | !! ** Method : 1D eddy viscosity coefficients ( depth ) |
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241 | !! |
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242 | !!---------------------------------------------------------------------- |
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243 | !! * Arguments |
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244 | LOGICAL , INTENT (in ) :: ld_print ! If true, output arrays on numout |
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245 | REAL(wp), INTENT (in ) :: & |
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246 | pdam, & ! depth of the inflection point |
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247 | pwam, & ! width of inflection |
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248 | pbot ! battom value (0<pbot<= 1) |
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249 | REAL(wp), INTENT (in ), DIMENSION(jpk) :: & |
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250 | pdep ! depth of the gridpoint (T, U, V, F) |
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251 | REAL(wp), INTENT (inout), DIMENSION(jpi,jpj,jpk) :: & |
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252 | pah ! adimensional vertical profile |
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253 | |
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254 | !! * Local variables |
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255 | INTEGER :: jk ! dummy loop indices |
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256 | REAL(wp) :: zm00, zm01, zmhb, zmhs, zcf ! temporary scalars |
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257 | !!---------------------------------------------------------------------- |
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258 | |
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259 | zm00 = TANH( ( pdam - gdept_0(1 ) ) / pwam ) |
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260 | zm01 = TANH( ( pdam - gdept_0(jpkm1) ) / pwam ) |
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261 | zmhs = zm00 / zm01 |
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262 | zmhb = ( 1.e0 - pbot ) / ( 1.e0 - zmhs ) / zm01 |
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263 | |
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264 | DO jk = 1, jpk |
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265 | zcf = 1.e0 + zmhb * ( zm00 - TANH( ( pdam - pdep(jk) ) / pwam ) ) |
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266 | pah(:,:,jk) = zcf |
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267 | END DO |
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268 | |
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269 | ! Control print |
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270 | IF(lwp .AND. ld_print ) THEN |
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271 | WRITE(numout,*) |
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272 | WRITE(numout,*) ' ahm profile : ' |
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273 | WRITE(numout,*) |
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274 | WRITE(numout,'(" jk ahm "," depth t-level " )') |
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275 | DO jk = 1, jpk |
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276 | WRITE(numout,'(i6,2f12.4,3x,2f12.4)') jk, pah(1,1,jk), pdep(jk) |
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277 | END DO |
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278 | ENDIF |
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279 | |
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280 | END SUBROUTINE ldf_zpf_1d_3d |
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281 | |
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282 | |
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283 | SUBROUTINE ldf_zpf_3d( ld_print, pdam, pwam, pbot, pdep, pah ) |
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284 | !!---------------------------------------------------------------------- |
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285 | !! *** ROUTINE ldf_zpf *** |
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286 | !! |
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287 | !! ** Purpose : vertical adimensional profile for eddy coefficient |
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288 | !! |
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289 | !! ** Method : 3D for partial step or s-coordinate |
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290 | !! |
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291 | !!---------------------------------------------------------------------- |
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292 | !! * Arguments |
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293 | LOGICAL , INTENT (in ) :: ld_print ! If true, output arrays on numout |
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294 | REAL(wp), INTENT (in ) :: & |
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295 | pdam, & ! depth of the inflection point |
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296 | pwam, & ! width of inflection |
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297 | pbot ! reduction factor (surface value / bottom value) |
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298 | REAL(wp), INTENT (in ), DIMENSION(jpi,jpj,jpk) :: & |
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299 | pdep ! dep of the gridpoint (T, U, V, F) |
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300 | REAL(wp), INTENT (inout), DIMENSION(jpi,jpj,jpk) :: & |
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301 | pah ! adimensional vertical profile |
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302 | |
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303 | !! * Local variables |
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304 | INTEGER :: jk ! dummy loop indices |
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305 | REAL(wp) :: zm00, zm01, zmhb, zmhs ! temporary scalars |
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306 | !!---------------------------------------------------------------------- |
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307 | |
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308 | zm00 = TANH( ( pdam - gdept_0(1 ) ) / pwam ) |
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309 | zm01 = TANH( ( pdam - gdept_0(jpkm1) ) / pwam ) |
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310 | zmhs = zm00 / zm01 |
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311 | zmhb = ( 1.e0 - pbot ) / ( 1.e0 - zmhs ) / zm01 |
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312 | |
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313 | DO jk = 1, jpk |
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314 | pah(:,:,jk) = 1.e0 + zmhb * ( zm00 - TANH( ( pdam - pdep(:,:,jk) ) / pwam ) ) |
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315 | END DO |
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316 | |
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317 | ! Control print |
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318 | IF(lwp .AND. ld_print ) THEN |
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319 | WRITE(numout,*) |
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320 | WRITE(numout,*) ' ahm profile : ' |
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321 | WRITE(numout,*) |
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322 | WRITE(numout,'(" jk ahm "," depth t-level " )') |
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323 | DO jk = 1, jpk |
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324 | WRITE(numout,'(i6,2f12.4,3x,2f12.4)') jk, pah(1,1,jk), pdep(1,1,jk) |
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325 | END DO |
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326 | ENDIF |
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327 | |
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328 | END SUBROUTINE ldf_zpf_3d |
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329 | !!====================================================================== |
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330 | END MODULE ldfdyn |
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