1 | MODULE traadv_eiv |
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2 | !!============================================================================== |
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3 | !! *** MODULE traadv_eiv *** |
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4 | !! Ocean active tracers: advection trend - eddy induced velocity |
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5 | !!============================================================================== |
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6 | !! History : |
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7 | !! 9.0 ! 05-11 (G. Madec) Original code from traldf & zdf _iso |
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8 | !!---------------------------------------------------------------------- |
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9 | #if defined key_traldf_eiv || defined key_esopa |
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10 | !!---------------------------------------------------------------------- |
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11 | !! 'key_traldf_eiv' rotation of the lateral mixing tensor |
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12 | !!---------------------------------------------------------------------- |
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13 | !! tra_ldf_iso : update the tracer trend with the horizontal component |
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14 | !! of iso neutral laplacian operator or horizontal |
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15 | !! laplacian operator in s-coordinate |
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16 | !!---------------------------------------------------------------------- |
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17 | !! * Modules used |
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18 | USE oce ! ocean dynamics and tracers variables |
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19 | USE dom_oce ! ocean space and time domain variables |
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20 | USE ldftra_oce ! ocean active tracers: lateral physics |
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21 | USE ldfslp ! iso-neutral slopes |
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22 | USE in_out_manager ! I/O manager |
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23 | |
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24 | IMPLICIT NONE |
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25 | PRIVATE |
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26 | |
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27 | !! * Routine accessibility |
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28 | PUBLIC tra_adv_eiv ! routine called by step.F90 |
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29 | |
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30 | |
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31 | !! * Substitutions |
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32 | # include "domzgr_substitute.h90" |
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33 | # include "ldftra_substitute.h90" |
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34 | # include "ldfeiv_substitute.h90" |
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35 | # include "vectopt_loop_substitute.h90" |
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36 | !!---------------------------------------------------------------------- |
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37 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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38 | !!---------------------------------------------------------------------- |
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39 | |
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40 | CONTAINS |
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41 | |
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42 | SUBROUTINE tra_adv_eiv( kt, pun, pvn, pwn ) |
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43 | !!---------------------------------------------------------------------- |
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44 | !! *** ROUTINE tra_adv_eiv *** |
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45 | !! |
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46 | !! ** Purpose : Compute the before horizontal tracer (t & s) diffusive |
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47 | !! trend and add it to the general trend of tracer equation. |
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48 | !! |
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49 | !! ** Method : The eddy induced advection is computed from the slope |
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50 | !! of iso-neutral surfaces computed in routine ldf_slp as follows: |
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51 | !! zu_eiv = 1/(e2u e3u) dk[ aeiu e2u mi(wslpi) ] |
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52 | !! zv_eiv = 1/(e1v e3v) dk[ aeiv e1v mj(wslpj) |
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53 | !! zw_eiv = -1/(e1t e2t) { di[ aeiu e2u mi(wslpi) ] |
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54 | !! + dj[ aeiv e1v mj(wslpj) ] } |
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55 | !! add the eiv component to the model velocity: |
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56 | !! p.n = p.n + z._eiv |
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57 | !! |
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58 | !! ** Action : - add to p.n the eiv component |
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59 | !! |
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60 | !!---------------------------------------------------------------------- |
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61 | !! * Arguments |
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62 | INTEGER , INTENT( in ) :: kt ! ocean time-step index |
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63 | REAL(wp), INTENT( inout ), DIMENSION(jpi,jpj,jpk) :: & |
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64 | pun, pvn, pwn ! in : now ocean velocity fields |
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65 | ! ! out: fields increased by the eiv components |
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66 | |
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67 | !! * Local declarations |
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68 | INTEGER :: ji, jj, jk ! dummy loop indices |
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69 | REAL(wp) :: & |
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70 | zuwk, zuwk1, zuwi, zuwi1, & ! temporary scalar |
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71 | zvwk, zvwk1, zvwj, zvwj1, & ! |
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72 | zu_eiv, zv_eiv, zw_eiv ! |
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73 | !!---------------------------------------------------------------------- |
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74 | |
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75 | IF( kt == nit000 ) THEN |
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76 | IF(lwp) WRITE(numout,*) |
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77 | IF(lwp) WRITE(numout,*) 'tra_adv_eiv : eddy induced advection :' |
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78 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ add to velocity fields the eiv component' |
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79 | # if defined key_diaeiv |
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80 | u_eiv(:,:,:) = 0.e0 |
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81 | v_eiv(:,:,:) = 0.e0 |
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82 | w_eiv(:,:,:) = 0.e0 |
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83 | # endif |
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84 | ENDIF |
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85 | |
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86 | ! ! ================= |
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87 | DO jk = 1, jpkm1 ! Horizontal slab |
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88 | ! ! ================= |
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89 | |
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90 | DO jj = 1, jpjm1 |
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91 | DO ji = 1, fs_jpim1 ! vector opt. |
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92 | zuwk = ( wslpi(ji,jj,jk ) + wslpi(ji+1,jj,jk ) ) * fsaeiu(ji,jj,jk ) * umask(ji,jj,jk ) |
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93 | zuwk1= ( wslpi(ji,jj,jk+1) + wslpi(ji+1,jj,jk+1) ) * fsaeiu(ji,jj,jk+1) * umask(ji,jj,jk+1) |
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94 | zvwk = ( wslpj(ji,jj,jk ) + wslpj(ji,jj+1,jk ) ) * fsaeiv(ji,jj,jk ) * vmask(ji,jj,jk ) |
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95 | zvwk1= ( wslpj(ji,jj,jk+1) + wslpj(ji,jj+1,jk+1) ) * fsaeiv(ji,jj,jk+1) * vmask(ji,jj,jk+1) |
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96 | |
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97 | zu_eiv = 0.5 * umask(ji,jj,jk) * ( zuwk - zuwk1 ) / fse3u(ji,jj,jk) |
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98 | zv_eiv = 0.5 * vmask(ji,jj,jk) * ( zvwk - zvwk1 ) / fse3v(ji,jj,jk) |
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99 | |
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100 | pun(ji,jj,jk) = pun(ji,jj,jk) + zu_eiv |
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101 | pvn(ji,jj,jk) = pvn(ji,jj,jk) + zv_eiv |
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102 | |
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103 | # if defined key_diaeiv |
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104 | u_eiv(ji,jj,jk) = zu_eiv |
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105 | v_eiv(ji,jj,jk) = zv_eiv |
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106 | # endif |
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107 | END DO |
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108 | END DO |
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109 | IF( jk >=2 ) THEN ! jk=1 zw_eiv=0, not computed |
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110 | DO jj = 2, jpjm1 |
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111 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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112 | # if defined key_traldf_c2d || defined key_traldf_c3d |
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113 | zuwi = ( wslpi(ji,jj,jk)+wslpi(ji-1,jj,jk) ) * fsaeiu(ji-1,jj,jk) * e2u(ji-1,jj) * umask(ji-1,jj,jk) |
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114 | zuwi1 = ( wslpi(ji,jj,jk)+wslpi(ji+1,jj,jk) ) * fsaeiu(ji ,jj,jk) * e2u(ji ,jj) * umask(ji ,jj,jk) |
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115 | zvwj = ( wslpj(ji,jj,jk)+wslpj(ji,jj-1,jk) ) * fsaeiv(ji,jj-1,jk) * e1v(ji,jj-1) * vmask(ji,jj-1,jk) |
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116 | zvwj1 = ( wslpj(ji,jj,jk)+wslpj(ji,jj+1,jk) ) * fsaeiv(ji,jj ,jk) * e1v(ji ,jj) * vmask(ji ,jj,jk) |
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117 | |
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118 | zw_eiv = - 0.5 * tmask(ji,jj,jk) * ( zuwi1 - zuwi + zvwj1 - zvwj ) / ( e1t(ji,jj)*e2t(ji,jj) ) |
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119 | # else |
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120 | zuwki = ( wslpi(ji,jj,jk) + wslpi(ji-1,jj,jk) ) * e2u(ji-1,jj) * umask(ji-1,jj,jk) |
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121 | zuwk = ( wslpi(ji,jj,jk) + wslpi(ji+1,jj,jk) ) * e2u(ji ,jj) * umask(ji ,jj,jk) |
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122 | zvwki = ( wslpj(ji,jj,jk) + wslpj(ji,jj-1,jk) ) * e1v(ji,jj-1) * vmask(ji,jj-1,jk) |
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123 | zvwk = ( wslpj(ji,jj,jk) + wslpj(ji,jj+1,jk) ) * e1v(ji ,jj) * vmask(ji ,jj,jk) |
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124 | |
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125 | zw_eiv = - 0.5 * tmask(ji,jj,jk) * fsaeiw(ji,jj,jk) * ( zuwk - zuwki + zvwk - zvwki ) |
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126 | & / ( e1t(ji,jj)*e2t(ji,jj) ) |
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127 | # endif |
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128 | pwn(ji,jj,jk) = pwn(ji,jj,jk) + zw_eiv |
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129 | |
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130 | # if defined key_diaeiv |
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131 | w_eiv(ji,jj,jk) = zw_eiv |
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132 | # endif |
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133 | END DO |
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134 | END DO |
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135 | ENDIF |
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136 | ! ! ================= |
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137 | END DO ! End of slab |
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138 | ! ! ================= |
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139 | |
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140 | END SUBROUTINE tra_adv_eiv |
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141 | |
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142 | #else |
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143 | !!---------------------------------------------------------------------- |
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144 | !! Dummy module : No rotation of the lateral mixing tensor |
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145 | !!---------------------------------------------------------------------- |
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146 | CONTAINS |
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147 | SUBROUTINE tra_adv_eiv( kt, pun, pvn, pwn ) ! Empty routine |
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148 | INTEGER :: kt |
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149 | REAL, DIMENSION(:,:,:) :: pun, pvn, pwn |
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150 | WRITE(*,*) 'tra_adv_eiv: You should not have seen this print! error?', & |
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151 | & kt, pun(1,1,1), pvn(1,1,1), pwn(1,1,1) |
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152 | END SUBROUTINE tra_adv_eiv |
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153 | #endif |
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154 | |
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155 | !!============================================================================== |
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156 | END MODULE traadv_eiv |
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