1 | MODULE dynkeg_tam |
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2 | #ifdef key_tam |
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3 | !!=========================================================================== |
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4 | !! *** MODULE dynkeg_tam *** |
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5 | !! Ocean dynamics: kinetic energy gradient trend |
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6 | !!====================================================================== |
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7 | !! History of the direct module: |
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8 | !! 1.0 ! 87-09 (P. Andrich, m.-a. Foujols) Original code |
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9 | !! 7.0 ! 97-05 (G. Madec) Split dynber into dynkeg and dynhpg |
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10 | !! 9.0 ! 02-07 (G. Madec) F90: Free form and module |
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11 | !! History of the TAM module: |
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12 | !! 9.0 ! 08-08 (A. Vidard) first version |
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13 | !! NEMO 3.4 ! 12-07 (P.-A. Bouttier) Phasing with 3.4 |
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14 | !!---------------------------------------------------------------------- |
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15 | !!---------------------------------------------------------------------- |
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16 | !! dyn_keg_tan : update the momentum trend with the horizontal tke |
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17 | !! dyn_keg_adj : update the momentum trend with the horizontal tke |
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18 | !!---------------------------------------------------------------------- |
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19 | USE par_oce |
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20 | USE oce |
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21 | USE dom_oce |
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22 | USE in_out_manager |
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23 | USE oce_tam |
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24 | USE lib_mpp ! MPP library |
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25 | USE wrk_nemo ! Memory Allocation |
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26 | USE timing |
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27 | |
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28 | IMPLICIT NONE |
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29 | PRIVATE |
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30 | |
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31 | PUBLIC dyn_keg_tan ! routine called by step_tam module |
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32 | PUBLIC dyn_keg_adj ! routine called by step_tam module |
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33 | |
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34 | !! * Substitutions |
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35 | # include "vectopt_loop_substitute.h90" |
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36 | |
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37 | CONTAINS |
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38 | |
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39 | SUBROUTINE dyn_keg_tan( kt ) |
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40 | !!---------------------------------------------------------------------- |
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41 | !! *** ROUTINE dyn_keg_tan *** |
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42 | !! |
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43 | !! ** Purpose of the direct routine: |
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44 | !! Compute the now momentum trend due to the horizontal |
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45 | !! gradient of the horizontal kinetic energy and add it to the |
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46 | !! general momentum trend. |
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47 | !! |
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48 | !! ** Method of the direct routine: |
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49 | !! Compute the now horizontal kinetic energy |
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50 | !! zhke = 1/2 [ mi-1( un^2 ) + mj-1( vn^2 ) ] |
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51 | !! Take its horizontal gradient and add it to the general momentum |
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52 | !! trend (ua,va). |
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53 | !! ua = ua - 1/e1u di[ zhke ] |
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54 | !! va = va - 1/e2v dj[ zhke ] |
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55 | !! |
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56 | !! ** Action : - Update the (ua_tl, va_tl) with the hor. ke gradient trend |
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57 | !!---------------------------------------------------------------------- |
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58 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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59 | !! |
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60 | INTEGER :: ji, jj, jk ! dummy loop indices |
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61 | REAL(wp) :: zutl, zvtl ! temporary scalars |
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62 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zhketl ! temporary 3D workspace |
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63 | !!---------------------------------------------------------------------- |
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64 | ! |
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65 | IF( nn_timing == 1 ) CALL timing_start('dyn_keg_tan') |
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66 | ! |
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67 | CALL wrk_alloc( jpi, jpj, jpk, zhketl ) |
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68 | ! |
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69 | IF( kt == nit000 ) THEN |
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70 | IF(lwp) WRITE(numout,*) |
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71 | IF(lwp) WRITE(numout,*) 'dyn_keg_tan : kinetic energy gradient trend' |
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72 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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73 | ENDIF |
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74 | ! ! =============== |
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75 | DO jk = 1, jpkm1 ! Horizontal slab |
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76 | ! ! =============== |
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77 | DO jj = 2, jpj ! Horizontal kinetic energy at T-point |
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78 | DO ji = fs_2, jpi ! vector opt. |
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79 | zutl = 0.5_wp * ( un_tl(ji-1,jj ,jk) * un(ji-1,jj ,jk) & |
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80 | & + un_tl(ji ,jj ,jk) * un(ji ,jj ,jk) ) |
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81 | zvtl = 0.5_wp * ( vn_tl(ji ,jj-1,jk) * vn(ji ,jj-1,jk) & |
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82 | & + vn_tl(ji ,jj ,jk) * vn(ji ,jj ,jk) ) |
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83 | zhketl(ji,jj,jk) = zvtl + zutl |
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84 | END DO |
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85 | END DO |
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86 | DO jj = 2, jpjm1 ! add the gradient of kinetic energy to the general momentum trends |
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87 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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88 | ua_tl(ji,jj,jk) = ua_tl(ji,jj,jk) - ( zhketl(ji+1,jj ,jk) - zhketl(ji,jj,jk) ) / e1u(ji,jj) |
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89 | va_tl(ji,jj,jk) = va_tl(ji,jj,jk) - ( zhketl(ji ,jj+1,jk) - zhketl(ji,jj,jk) ) / e2v(ji,jj) |
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90 | END DO |
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91 | END DO |
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92 | ! ! =============== |
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93 | END DO ! End of slab |
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94 | ! ! =============== |
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95 | CALL wrk_dealloc( jpi, jpj, jpk, zhketl ) |
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96 | ! |
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97 | IF( nn_timing == 1 ) CALL timing_stop('dyn_keg_tan') |
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98 | ! |
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99 | END SUBROUTINE dyn_keg_tan |
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100 | |
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101 | SUBROUTINE dyn_keg_adj( kt ) |
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102 | !!---------------------------------------------------------------------- |
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103 | !! *** ROUTINE dyn_keg_adj *** |
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104 | !! |
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105 | !! ** Purpose of the direct routine: |
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106 | !! Compute the now momentum trend due to the horizontal |
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107 | !! gradient of the horizontal kinetic energy and add it to the |
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108 | !! general momentum trend. |
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109 | !! |
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110 | !! ** Method of the direct routine: |
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111 | !! Compute the now horizontal kinetic energy |
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112 | !! zhke = 1/2 [ mi-1( un^2 ) + mj-1( vn^2 ) ] |
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113 | !! Take its horizontal gradient and add it to the general momentum |
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114 | !! trend (ua,va). |
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115 | !! ua = ua - 1/e1u di[ zhke ] |
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116 | !! va = va - 1/e2v dj[ zhke ] |
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117 | !! |
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118 | !! ** Action : - Update the (ua_ad, va_ad) with the hor. ke gradient trend |
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119 | !!---------------------------------------------------------------------- |
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120 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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121 | !! |
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122 | INTEGER :: ji, jj, jk ! dummy loop indices |
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123 | REAL(wp) :: zuad, zvad ! temporary scalars |
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124 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zhkead ! temporary 3D workspace |
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125 | !!---------------------------------------------------------------------- |
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126 | IF( nn_timing == 1 ) CALL timing_start('dyn_keg_adj') |
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127 | ! |
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128 | CALL wrk_alloc( jpi, jpj, jpk, zhkead ) |
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129 | ! |
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130 | IF( kt == nitend ) THEN |
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131 | IF(lwp) WRITE(numout,*) |
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132 | IF(lwp) WRITE(numout,*) 'dyn_keg_adj : kinetic energy gradient trend' |
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133 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
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134 | ENDIF |
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135 | zhkead(:,:,:) = 0.0_wp ; zuad = 0.0_wp ; zvad = 0.0_wp |
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136 | ! ! =============== |
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137 | DO jk = jpkm1, 1, -1 ! Horizontal slab |
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138 | ! ! =============== |
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139 | DO jj = jpjm1, 2, -1 ! add the gradient of kinetic energy to the general momentum trends |
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140 | DO ji = fs_jpim1, fs_2, -1 ! vector opt. |
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141 | zhkead(ji ,jj+1,jk) = zhkead(ji ,jj+1,jk) & |
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142 | & - va_ad(ji ,jj ,jk) / e2v(ji,jj) |
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143 | zhkead(ji ,jj ,jk) = zhkead(ji ,jj ,jk) & |
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144 | & + va_ad(ji ,jj ,jk) / e2v(ji,jj) |
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145 | zhkead(ji+1,jj ,jk) = zhkead(ji+1,jj ,jk) & |
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146 | & - ua_ad(ji ,jj ,jk) / e1u(ji,jj) |
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147 | zhkead(ji ,jj ,jk) = zhkead(ji ,jj ,jk) & |
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148 | & + ua_ad(ji ,jj ,jk) / e1u(ji,jj) |
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149 | END DO |
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150 | END DO |
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151 | DO jj = jpj, 2, -1 ! Horizontal kinetic energy at T-point |
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152 | DO ji = jpi, fs_2, -1 ! vector opt. |
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153 | zuad = zhkead(ji,jj,jk) |
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154 | zvad = zhkead(ji,jj,jk) |
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155 | zhkead(ji,jj,jk) = 0.0_wp |
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156 | |
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157 | vn_ad(ji ,jj-1,jk) = vn_ad(ji ,jj-1,jk) + zvad * vn(ji ,jj-1,jk) * 0.5_wp |
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158 | vn_ad(ji ,jj ,jk) = vn_ad(ji ,jj ,jk) + zvad * vn(ji ,jj ,jk) * 0.5_wp |
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159 | un_ad(ji-1,jj ,jk) = un_ad(ji-1,jj ,jk) + zuad * un(ji-1,jj ,jk) * 0.5_wp |
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160 | un_ad(ji ,jj ,jk) = un_ad(ji ,jj ,jk) + zuad * un(ji ,jj ,jk) * 0.5_wp |
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161 | END DO |
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162 | END DO |
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163 | ! ! =============== |
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164 | END DO ! End of slab |
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165 | ! ! =============== |
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166 | CALL wrk_dealloc( jpi, jpj, jpk, zhkead ) |
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167 | ! |
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168 | IF( nn_timing == 1 ) CALL timing_stop('dyn_keg_adj') |
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169 | ! |
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170 | END SUBROUTINE dyn_keg_adj |
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171 | SUBROUTINE dyn_keg_adj_tst( kumadt ) |
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172 | INTEGER, INTENT(IN) :: & |
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173 | & kumadt ! Output unit |
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174 | ! done in dynadv_tam |
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175 | END SUBROUTINE dyn_keg_adj_tst |
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176 | #endif |
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177 | END MODULE dynkeg_tam |
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