1 | !!---------------------------------------------------------------------- |
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2 | !! *** trcbbl_adv.h90 *** |
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3 | !!---------------------------------------------------------------------- |
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4 | |
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5 | !!---------------------------------------------------------------------- |
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6 | !! TOP 1.0 , LOCEAN-IPSL (2005) |
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7 | !! $Header$ |
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8 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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9 | !!---------------------------------------------------------------------- |
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10 | |
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11 | SUBROUTINE trc_bbl_adv( kt ) |
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12 | !!---------------------------------------------------------------------- |
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13 | !! *** ROUTINE trc_bbl_adv *** |
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14 | !! |
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15 | !! ** Purpose : Compute the before tracer trend associated |
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16 | !! with the bottom boundary layer and add it to the general trend |
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17 | !! of tracer equations. The bottom boundary layer is supposed to be |
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18 | !! both an advective and diffusive bottom boundary layer. |
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19 | !! |
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20 | !! ** Method : Computes the bottom boundary horizontal and vertical |
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21 | !! advection terms. Add it to the general trend : tra =tra + adv_bbl. |
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22 | !! When the product grad( rho) * grad(h) < 0 (where grad is a |
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23 | !! along bottom slope gradient) an additional lateral 2nd order |
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24 | !! diffusion along the bottom slope is added to the general |
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25 | !! tracer trend, otherwise the additional trend is set to 0. |
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26 | !! Second order operator (laplacian type) with variable coefficient |
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27 | !! computed as follow for temperature (idem on s): |
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28 | !! difft = 1/(e1t*e2t*e3t) { di-1[ ahbt e2u*e3u/e1u di[ztb] ] |
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29 | !! + dj-1[ ahbt e1v*e3v/e2v dj[ztb] ] } |
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30 | !! where ztb is a 2D array: the bottom ocean te;perature and ahtb |
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31 | !! is a time and space varying diffusive coefficient defined by: |
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32 | !! ahbt = zahbp if grad(rho).grad(h) < 0 |
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33 | !! = 0. otherwise. |
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34 | !! Note that grad(.) is the along bottom slope gradient. grad(rho) |
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35 | !! is evaluated using the local density (i.e. referenced at the |
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36 | !! local depth). Typical value of ahbt is 2000 m2/s (equivalent to |
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37 | !! a downslope velocity of 20 cm/s if the condition for slope |
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38 | !! convection is satified) |
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39 | !! Add this before trend to the general trend tra of the |
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40 | !! botton ocean tracer point: |
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41 | !! tra = tra + difft |
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42 | !! |
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43 | !! ** Action : - update tra at the bottom level with the bottom |
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44 | !! boundary layer trend |
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45 | !! |
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46 | !! References : |
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47 | !! Beckmann, A., and R. Doscher, 1997, J. Phys.Oceanogr., 581-591. |
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48 | !! |
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49 | !! History : |
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50 | !! 8.5 ! 02-12 (A. de Miranda, G. Madec) Original Code |
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51 | !! 9.0 ! 04-01 (A. de Miranda, G. Madec, J.M. Molines ) |
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52 | !! 9.0 ! 04-03 (C. Ethe) Adaptation for Passive tracers |
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53 | !!---------------------------------------------------------------------- |
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54 | !gh |
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55 | |
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56 | !! * Arguments |
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57 | INTEGER, INTENT( in ) :: kt ! ocean time-step |
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58 | |
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59 | !! * Local declarations |
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60 | INTEGER :: ji, jj, jk, jn ! dummy loop indices |
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61 | INTEGER :: ik, iku, ikv ! temporary integers |
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62 | |
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63 | REAL(wp) :: & |
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64 | zsign, zt, zs, zh, zalbet, & ! temporary scalars |
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65 | zgdrho, zbtr, ztra ! " " |
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66 | REAL(wp), DIMENSION(jpi,jpj) :: & |
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67 | ztnb, zsnb, zdep, ztrb ! temporary workspace arrays |
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68 | REAL(wp), DIMENSION(jpi,jpj) :: & ! temporary workspace arrays |
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69 | zalphax, zwu, zunb, & ! " " |
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70 | zalphay, zwv, zvnb, & ! " " |
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71 | zwx, zwy, zww, zwz, & ! " " |
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72 | zti, zsi ,ztmin,ztmax, zsmin,zsmax! " " |
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73 | ! " " |
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74 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: & |
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75 | zhdivn ! temporary workspace arrays |
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76 | REAL(wp) :: & |
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77 | zfui, zfvj, zbt, zsigna, & ! temporary scalars |
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78 | iku1,iku2,ikv1,ikv2, & ! temporary scalars |
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79 | ze3u,ze3v, & ! temporary scalars |
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80 | z2,z2dtt ! temporary scalars |
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81 | REAL(wp) :: & |
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82 | fsalbt, pft, pfs, pfh ! statement function |
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83 | CHARACTER (len=22) :: charout |
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84 | !!---------------------------------------------------------------------- |
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85 | ! ratio alpha/beta |
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86 | ! ================ |
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87 | ! fsalbt: ratio of thermal over saline expension coefficients |
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88 | ! pft : potential temperature in degrees celcius |
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89 | ! pfs : salinity anomaly (s-35) in psu |
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90 | ! pfh : depth in meters |
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91 | |
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92 | fsalbt( pft, pfs, pfh ) = & |
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93 | ( ( ( -0.255019e-07 * pft + 0.298357e-05 ) * pft & |
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94 | - 0.203814e-03 ) * pft & |
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95 | + 0.170907e-01 ) * pft & |
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96 | + 0.665157e-01 & |
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97 | +(-0.678662e-05 * pfs - 0.846960e-04 * pft + 0.378110e-02 ) * pfs & |
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98 | + ( ( - 0.302285e-13 * pfh & |
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99 | - 0.251520e-11 * pfs & |
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100 | + 0.512857e-12 * pft * pft ) * pfh & |
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101 | - 0.164759e-06 * pfs & |
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102 | +( 0.791325e-08 * pft - 0.933746e-06 ) * pft & |
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103 | + 0.380374e-04 ) * pfh |
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104 | !!---------------------------------------------------------------------- |
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105 | |
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106 | IF( kt == nit000 ) CALL trc_bbl_init ! initialization at first time-step |
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107 | |
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108 | ! 1. 2D fields of bottom temperature and salinity, and bottom slope |
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109 | ! ----------------------------------------------------------------- |
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110 | ! mbathy= number of w-level, minimum value=1 (cf dommsk.F) |
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111 | |
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112 | #if defined key_vectopt_loop && ! defined key_mpp_omp |
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113 | jj = 1 |
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114 | DO ji = 1, jpij ! vector opt. (forced unrolling) |
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115 | #else |
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116 | DO jj = 1, jpj |
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117 | DO ji = 1, jpi |
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118 | #endif |
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119 | ik = mbkt(ji,jj) ! index of the bottom ocean T-level |
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120 | ztnb(ji,jj) = tn(ji,jj,ik) ! masked now T at the ocean bottom |
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121 | zsnb(ji,jj) = sn(ji,jj,ik) ! masked now S at the ocean bottom |
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122 | zdep(ji,jj) = fsdept(ji,jj,ik) ! depth of the ocean bottom T-level |
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123 | !gh |
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124 | zunb(ji,jj) = un(ji,jj,mbku(ji,jj)) |
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125 | zvnb(ji,jj) = vn(ji,jj,mbkv(ji,jj)) |
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126 | #if ! defined key_vectopt_loop || defined key_mpp_omp |
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127 | END DO |
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128 | #endif |
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129 | END DO |
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130 | |
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131 | ! 2. Criteria of additional bottom diffusivity: grad(rho).grad(h)<0 |
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132 | ! -------------------------------------------- |
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133 | ! Sign of the local density gradient along the i- and j-slopes |
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134 | ! multiplied by the slope of the ocean bottom |
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135 | |
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136 | SELECT CASE ( neos ) |
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137 | |
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138 | CASE ( 0 ) ! Jackett and McDougall (1994) formulation |
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139 | |
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140 | DO jj = 1, jpjm1 |
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141 | DO ji = 1, fs_jpim1 ! vector opt. |
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142 | ! ... temperature, salinity anomalie and depth |
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143 | zt = 0.5 * ( ztnb(ji,jj) + ztnb(ji+1,jj) ) |
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144 | zs = 0.5 * ( zsnb(ji,jj) + zsnb(ji+1,jj) ) - 35.0 |
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145 | zh = 0.5 * ( zdep(ji,jj) + zdep(ji+1,jj) ) |
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146 | ! ... masked ratio alpha/beta |
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147 | zalbet = fsalbt( zt, zs, zh )*umask(ji,jj,1) |
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148 | ! ... local density gradient along i-bathymetric slope |
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149 | zgdrho = zalbet*( ztnb(ji+1,jj) - ztnb(ji,jj) ) & |
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150 | - ( zsnb(ji+1,jj) - zsnb(ji,jj) ) |
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151 | zgdrho = zgdrho * umask(ji,jj,1) |
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152 | ! ... sign of local i-gradient of density multiplied by the i-slope |
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153 | zsign = SIGN( 0.5, -zgdrho * ( zdep(ji+1,jj) - zdep(ji,jj) ) ) |
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154 | zsigna= SIGN( 0.5, zunb(ji,jj) * ( zdep(ji+1,jj) - zdep(ji,jj) ) ) |
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155 | zalphax(ji,jj) = ( 0.5 + zsigna ) * ( 0.5-zsign ) * umask(ji,jj,1) |
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156 | END DO |
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157 | END DO |
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158 | |
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159 | DO jj = 1, jpjm1 |
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160 | DO ji = 1, fs_jpim1 ! vector opt. |
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161 | ! ... temperature, salinity anomalie and depth |
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162 | zt = 0.5 * ( ztnb(ji,jj+1) + ztnb(ji,jj) ) |
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163 | zs = 0.5 * ( zsnb(ji,jj+1) + zsnb(ji,jj) ) - 35.0 |
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164 | zh = 0.5 * ( zdep(ji,jj+1) + zdep(ji,jj) ) |
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165 | ! ... masked ratio alpha/beta |
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166 | zalbet = fsalbt( zt, zs, zh )*vmask(ji,jj,1) |
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167 | ! ... local density gradient along j-bathymetric slope |
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168 | zgdrho = zalbet*( ztnb(ji,jj+1) - ztnb(ji,jj) ) & |
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169 | - ( zsnb(ji,jj+1) - zsnb(ji,jj) ) |
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170 | zgdrho = zgdrho * vmask(ji,jj,1) |
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171 | ! ... sign of local j-gradient of density multiplied by the j-slope |
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172 | zsign = SIGN( 0.5, -zgdrho * ( zdep(ji,jj+1) - zdep(ji,jj) ) ) |
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173 | zsigna= SIGN( 0.5, zvnb(ji,jj) * ( zdep(ji,jj+1) - zdep(ji,jj) ) ) |
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174 | zalphay(ji,jj) = ( 0.5 + zsigna ) * ( 0.5 - zsign ) * vmask(ji,jj,1) |
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175 | END DO |
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176 | END DO |
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177 | |
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178 | |
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179 | CASE ( 1 ) ! Linear formulation function of temperature only |
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180 | |
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181 | DO jj = 1, jpjm1 |
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182 | DO ji = 1, fs_jpim1 ! vector opt. |
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183 | ! temperature, salinity anomalie and depth |
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184 | zt = 0.5 * ( ztnb(ji,jj) + ztnb(ji+1,jj) ) |
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185 | zs = 0.5 * ( zsnb(ji,jj) + zsnb(ji+1,jj) ) - 35.0 |
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186 | zh = 0.5 * ( zdep(ji,jj) + zdep(ji+1,jj) ) |
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187 | !gh ! masked ratio alpha/beta |
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188 | ! local density gradient along i-bathymetric slope |
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189 | zgdrho = ( ztnb(ji+1,jj) - ztnb(ji,jj) ) |
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190 | ! sign of local i-gradient of density multiplied by the i-slope |
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191 | zsign = SIGN( 0.5, - zgdrho * ( zdep(ji+1,jj) - zdep(ji,jj) ) ) |
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192 | zsigna= SIGN( 0.5, zunb(ji,jj) * ( zdep(ji+1,jj) - zdep(ji,jj) ) ) |
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193 | zalphax(ji,jj) = ( 0.5 - zsigna ) * ( 0.5 - zsign ) * umask(ji,jj,1) |
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194 | END DO |
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195 | END DO |
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196 | |
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197 | DO jj = 1, jpjm1 |
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198 | DO ji = 1, fs_jpim1 ! vector opt. |
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199 | ! temperature, salinity anomalie and depth |
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200 | zt = 0.5 * ( ztnb(ji,jj+1) + ztnb(ji,jj) ) |
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201 | zs = 0.5 * ( zsnb(ji,jj+1) + zsnb(ji,jj) ) - 35.0 |
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202 | zh = 0.5 * ( zdep(ji,jj+1) + zdep(ji,jj) ) |
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203 | !gh ! masked ratio alpha/beta |
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204 | ! local density gradient along j-bathymetric slope |
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205 | zgdrho = ( ztnb(ji,jj+1) - ztnb(ji,jj) ) |
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206 | ! sign of local j-gradient of density multiplied by the j-slope |
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207 | zsign = SIGN( 0.5, -zgdrho * ( zdep(ji,jj+1) - zdep(ji,jj) ) ) |
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208 | zsigna= SIGN( 0.5, zvnb(ji,jj) * ( zdep(ji,jj+1) - zdep(ji,jj) ) ) |
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209 | zalphay(ji,jj) = ( 0.5 - zsigna ) * ( 0.5 - zsign ) * vmask(ji,jj,1) |
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210 | END DO |
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211 | END DO |
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212 | |
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213 | CASE ( 2 ) ! Linear formulation function of temperature and salinity |
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214 | DO jj = 1, jpjm1 |
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215 | DO ji = 1, fs_jpim1 ! vector opt. |
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216 | ! local density gradient along i-bathymetric slope |
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217 | zgdrho = - ( rbeta*( zsnb(ji+1,jj) - zsnb(ji,jj) ) & |
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218 | - ralpha*( ztnb(ji+1,jj) - ztnb(ji,jj) ) ) |
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219 | ! sign of local i-gradient of density multiplied by the i-slope |
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220 | zsign = SIGN( 0.5, - zgdrho * ( zdep(ji+1,jj) - zdep(ji,jj) ) ) |
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221 | zsigna= SIGN( 0.5, zunb(ji,jj)*( zdep(ji+1,jj) - zdep(ji,jj) )) |
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222 | zalphax(ji,jj)=(0.5-zsigna)*(0.5-zsign)*umask(ji,jj,1) |
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223 | END DO |
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224 | END DO |
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225 | |
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226 | DO jj = 1, jpjm1 |
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227 | DO ji = 1, fs_jpim1 ! vector opt. |
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228 | ! local density gradient along j-bathymetric slope |
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229 | zgdrho = - ( rbeta*( zsnb(ji,jj+1) - zsnb(ji,jj) ) & |
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230 | - ralpha*( ztnb(ji,jj+1) - ztnb(ji,jj) ) ) |
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231 | ! sign of local j-gradient of density multiplied by the j-slope |
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232 | zsign = SIGN( 0.5, -zgdrho * ( zdep(ji,jj+1) - zdep(ji,jj) ) ) |
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233 | zsigna= SIGN( 0.5, zvnb(ji,jj) * ( zdep(ji,jj+1) - zdep(ji,jj) ) ) |
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234 | zalphay(ji,jj) = ( 0.5 - zsigna ) * ( 0.5 - zsign ) * vmask(ji,jj,1) |
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235 | END DO |
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236 | END DO |
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237 | |
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238 | |
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239 | CASE DEFAULT |
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240 | |
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241 | IF(lwp) WRITE(numout,cform_err) |
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242 | IF(lwp) WRITE(numout,*) ' bad flag value for neos = ', neos |
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243 | nstop = nstop + 1 |
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244 | |
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245 | END SELECT |
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246 | |
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247 | ! lateral boundary conditions on zalphax and zalphay (unchanged sign) |
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248 | CALL lbc_lnk( zalphax, 'U', 1. ) ; CALL lbc_lnk( zalphay, 'V', 1. ) |
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249 | |
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250 | |
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251 | ! 3. Velocities that are exchanged between ajacent bottom boxes. |
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252 | !--------------------------------------------------------------- |
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253 | ! ... is equal to zero but where bbl will work. |
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254 | u_trc_bbl(:,:,:) = 0.e0 |
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255 | v_trc_bbl(:,:,:) = 0.e0 |
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256 | |
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257 | |
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258 | !gh |
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259 | IF( ln_zps ) THEN |
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260 | ! partial steps correction |
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261 | |
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262 | #if defined key_vectopt_loop && ! defined key_mpp_omp |
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263 | jj = 1 |
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264 | DO ji = 1, jpij-jpi ! vector opt. (forced unrolling) |
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265 | #else |
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266 | DO jj = 1, jpjm1 |
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267 | DO ji = 1, jpim1 |
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268 | #endif |
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269 | iku = mbku(ji ,jj ) |
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270 | ikv = mbkv(ji ,jj ) |
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271 | iku1 = mbkt(ji+1,jj ) |
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272 | iku2 = mbkt(ji ,jj ) |
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273 | ikv1 = mbkt(ji ,jj+1) |
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274 | ikv2 = mbkt(ji ,jj ) |
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275 | ze3u = MIN( fse3u(ji,jj,iku1), fse3u(ji,jj,iku2) ) |
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276 | ze3v = MIN( fse3v(ji,jj,ikv1), fse3v(ji,jj,ikv2) ) |
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277 | |
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278 | IF( MAX(iku,ikv) > 1 ) THEN |
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279 | u_trc_bbl(ji,jj,iku) = zalphax(ji,jj) * un(ji,jj,iku) * ze3u / fse3u(ji,jj,iku) |
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280 | v_trc_bbl(ji,jj,ikv) = zalphay(ji,jj) * vn(ji,jj,ikv) * ze3v / fse3v(ji,jj,ikv) |
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281 | ENDIF |
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282 | #if ! defined key_vectopt_loop || defined key_mpp_omp |
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283 | END DO |
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284 | #endif |
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285 | END DO |
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286 | |
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287 | ! lateral boundary conditions on u_trc_bbl and v_trc_bbl (changed sign) |
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288 | CALL lbc_lnk( u_trc_bbl, 'U', -1. ) ; CALL lbc_lnk( v_trc_bbl, 'V', -1. ) |
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289 | |
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290 | ELSE ! z-coordinate - full steps or s-coordinate |
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291 | ! if not partial step loop over the whole domain no lbc call |
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292 | |
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293 | #if defined key_vectopt_loop && ! defined key_mpp_omp |
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294 | jj = 1 |
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295 | DO ji = 1, jpij ! vector opt. (forced unrolling) |
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296 | #else |
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297 | DO jj = 1, jpj |
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298 | DO ji = 1, jpi |
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299 | #endif |
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300 | iku = mbku(ji,jj) |
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301 | ikv = mbkv(ji,jj) |
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302 | IF( MAX(iku,ikv) > 1 ) THEN |
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303 | u_trc_bbl(ji,jj,iku) = zalphax(ji,jj) * un(ji,jj,iku) |
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304 | v_trc_bbl(ji,jj,ikv) = zalphay(ji,jj) * vn(ji,jj,ikv) |
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305 | ENDIF |
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306 | #if ! defined key_vectopt_loop || defined key_mpp_omp |
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307 | END DO |
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308 | #endif |
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309 | END DO |
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310 | |
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311 | ENDIF |
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312 | |
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313 | DO jn = 1, jptra |
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314 | |
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315 | #if defined key_vectopt_loop && ! defined key_mpp_omp |
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316 | jj = 1 |
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317 | DO ji = 1, jpij ! vector opt. (forced unrolling) |
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318 | #else |
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319 | DO jj = 1, jpj |
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320 | DO ji = 1, jpi |
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321 | #endif |
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322 | ik = mbkt(ji,jj) ! index of the bottom ocean T-level |
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323 | ztrb(ji,jj) = trb(ji,jj,ik,jn) * tmask(ji,jj,1) ! masked now T at the ocean bottom |
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324 | #if ! defined key_vectopt_loop || defined key_mpp_omp |
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325 | END DO |
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326 | #endif |
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327 | END DO |
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328 | |
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329 | |
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330 | |
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331 | ! 5. Along sigma advective trend |
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332 | ! ------------------------------- |
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333 | ! ... Second order centered tracer flux at u and v-points |
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334 | |
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335 | # if defined key_vectopt_loop && ! defined key_mpp_omp |
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336 | jj = 1 |
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337 | DO ji = 1, jpij-jpi ! vector opt. (forced unrolling) |
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338 | # else |
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339 | DO jj = 1, jpjm1 |
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340 | DO ji = 1, jpim1 |
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341 | # endif |
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342 | iku = mbku(ji,jj) |
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343 | ikv = mbkv(ji,jj) |
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344 | zfui = e2u(ji,jj) * fse3u(ji,jj,iku) * u_trc_bbl(ji,jj,iku) |
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345 | zfvj = e1v(ji,jj) * fse3v(ji,jj,ikv) * v_trc_bbl(ji,jj,ikv) |
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346 | ! upstream scheme |
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347 | zwx(ji,jj) = ( ( zfui + ABS( zfui ) ) * ztrb(ji ,jj ) & |
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348 | & +( zfui - ABS( zfui ) ) * ztrb(ji+1,jj ) ) * 0.5 |
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349 | zwy(ji,jj) = ( ( zfvj + ABS( zfvj ) ) * ztrb(ji ,jj ) & |
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350 | & +( zfvj - ABS( zfvj ) ) * ztrb(ji ,jj+1) ) * 0.5 |
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351 | #if ! defined key_vectopt_loop || defined key_mpp_omp |
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352 | END DO |
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353 | #endif |
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354 | END DO |
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355 | |
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356 | # if defined key_vectopt_loop && ! defined key_mpp_omp |
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357 | jj = 1 |
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358 | DO ji = jpi+2, jpij-jpi-1 ! vector opt. (forced unrolling) |
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359 | # else |
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360 | DO jj = 2, jpjm1 |
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361 | DO ji = 2, jpim1 |
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362 | # endif |
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363 | ik = mbkt(ji,jj) |
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364 | zbtr = 1. / ( e1t(ji,jj)*e2t(ji,jj)*fse3t(ji,jj,ik) ) |
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365 | ! horizontal advective trends |
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366 | ztra = - zbtr * ( zwx(ji,jj) - zwx(ji-1,jj ) & |
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367 | & + zwy(ji,jj) - zwy(ji ,jj-1) ) |
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368 | |
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369 | ! add it to the general tracer trends |
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370 | tra(ji,jj,ik,jn) = tra(ji,jj,ik,jn) + ztra |
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371 | #if ! defined key_vectopt_loop || defined key_mpp_omp |
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372 | END DO |
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373 | #endif |
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374 | END DO |
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375 | |
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376 | END DO |
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377 | |
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378 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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379 | WRITE(charout, FMT="('bbl - adv')") |
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380 | CALL prt_ctl_trc_info(charout) |
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381 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm,clinfo2='trd') |
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382 | ENDIF |
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383 | |
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384 | ! 6. Vertical advection velocities |
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385 | ! -------------------------------- |
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386 | ! ... computes divergence perturbation (velocties to be removed from upper t boxes : |
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387 | DO jk= 1, jpkm1 |
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388 | |
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389 | DO jj=1, jpjm1 |
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390 | DO ji = 1, fs_jpim1 ! vertor opt. |
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391 | zwu(ji,jj) = -e2u(ji,jj) * u_trc_bbl(ji,jj,jk) * fse3u(ji,jj,jk) |
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392 | zwv(ji,jj) = -e1v(ji,jj) * v_trc_bbl(ji,jj,jk) * fse3v(ji,jj,jk) |
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393 | END DO |
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394 | END DO |
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395 | |
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396 | ! ... horizontal divergence |
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397 | DO jj = 2, jpjm1 |
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398 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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399 | zbt = e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) |
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400 | zhdivn(ji,jj,jk) = ( zwu(ji,jj) - zwu(ji-1,jj ) & |
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401 | & + zwv(ji,jj) - zwv(ji ,jj-1) ) / zbt |
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402 | END DO |
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403 | END DO |
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404 | END DO |
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405 | |
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406 | |
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407 | ! ... horizontal bottom divergence |
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408 | !gh |
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409 | IF( ln_zps ) THEN |
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410 | |
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411 | # if defined key_vectopt_loop && ! defined key_mpp_omp |
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412 | jj = 1 |
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413 | DO ji = 1, jpij-jpi ! vector opt. (forced unrolling) |
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414 | # else |
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415 | DO jj = 1, jpjm1 |
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416 | DO ji = 1, jpim1 |
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417 | # endif |
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418 | iku = mbku(ji ,jj ) |
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419 | ikv = mbkv(ji ,jj ) |
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420 | iku1 = mbkt(ji+1,jj ) |
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421 | iku2 = mbkt(ji ,jj ) |
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422 | ikv1 = mbkt(ji ,jj+1) |
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423 | ikv2 = mbkt(ji ,jj ) |
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424 | ze3u = MIN( fse3u(ji,jj,iku1), fse3u(ji,jj,iku2) ) |
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425 | ze3v = MIN( fse3v(ji,jj,ikv1), fse3v(ji,jj,ikv2) ) |
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426 | |
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427 | zwu(ji,jj) = zalphax(ji,jj) * e2u(ji,jj) * ze3u |
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428 | zwv(ji,jj) = zalphay(ji,jj) * e1v(ji,jj) * ze3v |
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429 | #if ! defined key_vectopt_loop || defined key_mpp_omp |
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430 | END DO |
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431 | #endif |
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432 | END DO |
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433 | |
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434 | ELSE |
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435 | |
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436 | # if defined key_vectopt_loop && ! defined key_mpp_omp |
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437 | jj = 1 |
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438 | DO ji = 1, jpij-jpi ! vector opt. (forced unrolling) |
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439 | # else |
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440 | DO jj = 1, jpjm1 |
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441 | DO ji = 1, jpim1 |
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442 | # endif |
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443 | iku = mbku(ji,jj) |
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444 | ikv = mbkv(ji,jj) |
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445 | zwu(ji,jj) = zalphax(ji,jj) * e2u(ji,jj) * fse3u(ji,jj,iku) |
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446 | zwv(ji,jj) = zalphay(ji,jj) * e1v(ji,jj) * fse3v(ji,jj,ikv) |
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447 | #if ! defined key_vectopt_loop || defined key_mpp_omp |
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448 | END DO |
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449 | #endif |
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450 | END DO |
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451 | ENDIF |
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452 | |
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453 | # if defined key_vectopt_loop && ! defined key_mpp_omp |
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454 | jj = 1 |
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455 | DO ji = jpi+2, jpij-jpi-1 ! vector opt. (forced unrolling) |
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456 | # else |
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457 | DO jj = 2, jpjm1 |
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458 | DO ji = 2, jpim1 |
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459 | # endif |
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460 | ik = mbkt(ji,jj) |
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461 | zbt = e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,ik) |
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462 | zhdivn(ji,jj,ik) = & |
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463 | & ( zwu(ji ,jj ) * ( zunb(ji ,jj ) - un(ji ,jj ,ik) ) & |
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464 | & - zwu(ji-1,jj ) * ( zunb(ji-1,jj ) - un(ji-1,jj ,ik) ) & |
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465 | & + zwv(ji ,jj ) * ( zvnb(ji ,jj ) - vn(ji ,jj ,ik) ) & |
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466 | & - zwv(ji ,jj-1) * ( zvnb(ji ,jj-1) - vn(ji ,jj-1,ik) ) & |
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467 | & ) / zbt |
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468 | |
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469 | # if ! defined key_vectopt_loop || defined key_mpp_omp |
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470 | END DO |
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471 | # endif |
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472 | END DO |
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473 | |
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474 | ! 7. compute additional vertical velocity to be used in t boxes |
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475 | ! ------------------------------------------------------------- |
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476 | |
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477 | ! ... Computation from the bottom |
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478 | ! Note that w_trc_bbl(:,:,jpk) has been set to 0 in trc_bbl_init |
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479 | DO jk = jpkm1, 1, -1 |
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480 | DO jj= 2, jpjm1 |
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481 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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482 | w_trc_bbl(ji,jj,jk) = w_trc_bbl(ji,jj,jk+1) - fse3t(ji,jj,jk)*zhdivn(ji,jj,jk) |
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483 | END DO |
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484 | END DO |
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485 | END DO |
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486 | |
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487 | ! Boundary condition on w_bbl (unchanged sign) |
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488 | CALL lbc_lnk( w_trc_bbl, 'W', 1. ) |
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489 | |
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490 | END SUBROUTINE trc_bbl_adv |
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