1 | MODULE trcexp |
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2 | !!====================================================================== |
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3 | !! *** MODULE p4sed *** |
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4 | !! TOP : PISCES Compute loss of organic matter in the sediments |
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5 | !!====================================================================== |
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6 | !! History : - ! 1999 (O. Aumont, C. Le Quere) original code |
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7 | !! - ! 2001-05 (O. Aumont, E. Kestenare) add sediment computations |
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8 | !! 1.0 ! 2005-06 (A.-S. Kremeur) new temporal integration for sedpoc |
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9 | !! 2.0 ! 2007-12 (C. Deltel, G. Madec) F90 |
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10 | !!---------------------------------------------------------------------- |
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11 | #if defined key_lobster |
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12 | !!---------------------------------------------------------------------- |
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13 | !! 'key_lobster' LOBSTER bio-model |
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14 | !!---------------------------------------------------------------------- |
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15 | !! trc_exp : Compute loss of organic matter in the sediments |
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16 | !!---------------------------------------------------------------------- |
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17 | USE oce_trc ! |
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18 | USE sms_lobster |
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19 | USE lbclnk |
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20 | USE trc |
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21 | USE trctrp_lec |
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22 | USE prtctl_trc ! Print control for debbuging |
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23 | USE trdmld_trc |
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24 | USE trdmld_trc_oce |
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25 | |
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26 | IMPLICIT NONE |
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27 | PRIVATE |
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28 | |
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29 | PUBLIC trc_exp ! called in p4zprg.F90 |
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30 | |
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31 | !!* Substitution |
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32 | # include "domzgr_substitute.h90" |
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33 | !!---------------------------------------------------------------------- |
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34 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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35 | !! $Id$ |
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36 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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37 | !!---------------------------------------------------------------------- |
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38 | |
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39 | CONTAINS |
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40 | |
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41 | SUBROUTINE trc_exp( kt ) |
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42 | !!--------------------------------------------------------------------- |
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43 | !! *** ROUTINE trc_exp *** |
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44 | !! |
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45 | !! ** Purpose : MODELS EXPORT OF BIOGENIC MATTER (POC ''SOFT |
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46 | !! TISSUE'') AND ITS DISTRIBUTION IN WATER COLUMN |
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47 | !! |
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48 | !! ** Method : - IN THE SURFACE LAYER POC IS PRODUCED ACCORDING TO |
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49 | !! NURTRIENTS AVAILABLE AND GROWTH CONDITIONS. NUTRIENT UPTAKE |
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50 | !! KINETICS FOLLOW MICHAELIS-MENTON FORMULATION. |
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51 | !! THE TOTAL PARTICLE AMOUNT PRODUCED, IS DISTRIBUTED IN THE WATER |
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52 | !! COLUMN BELOW THE SURFACE LAYER. |
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53 | !!--------------------------------------------------------------------- |
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54 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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55 | !! |
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56 | INTEGER :: ji, jj, jk, jl |
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57 | REAL(wp) :: zgeolpoc, zfact |
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58 | INTEGER , DIMENSION(jpi,jpj) :: ikbot |
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59 | REAL(wp), DIMENSION(jpi,jpj) :: zwork |
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60 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: ztrbio |
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61 | CHARACTER (len=25) :: charout |
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62 | !!--------------------------------------------------------------------- |
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63 | |
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64 | IF( kt == nit000 ) THEN |
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65 | IF(lwp) WRITE(numout,*) |
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66 | IF(lwp) WRITE(numout,*) ' trc_exp: LOBSTER export' |
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67 | IF(lwp) WRITE(numout,*) ' ~~~~~~~' |
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68 | ENDIF |
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69 | |
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70 | ! VERTICAL DISTRIBUTION OF NEWLY PRODUCED BIOGENIC |
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71 | ! POC IN THE WATER COLUMN |
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72 | ! (PARTS OF NEWLY FORMED MATTER REMAINING IN THE DIFFERENT |
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73 | ! LAYERS IS DETERMINED BY DMIN3 DEFINED IN sms_lobster.F90 |
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74 | ! ---------------------------------------------------------------------- |
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75 | |
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76 | IF( l_trdtrc )THEN |
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77 | ALLOCATE( ztrbio(jpi,jpj,jpk) ) |
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78 | ztrbio(:,:,:) = tra(:,:,:,jpno3) |
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79 | ENDIF |
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80 | |
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81 | DO jk = 1, jpkm1 |
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82 | DO jj = 2, jpjm1 |
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83 | DO ji = 2, jpim1 |
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84 | tra(ji,jj,jk,jpno3) = tra(ji,jj,jk,jpno3) & |
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85 | & + (1./fse3t(ji,jj,jk)) * dmin3(ji,jj,jk) * fbod(ji,jj) |
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86 | END DO |
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87 | END DO |
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88 | END DO |
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89 | |
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90 | ! Find the last level of the water column |
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91 | ! Compute fluxes due to sinking particles (slow) |
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92 | |
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93 | ikbot(:,:) = jpk |
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94 | zwork(:,:) = 0.e0 |
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95 | |
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96 | !!gm ikbot already exist in opa... |
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97 | DO jk = 1, jpkm1 |
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98 | DO jj = 2, jpjm1 |
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99 | DO ji = 2, jpim1 |
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100 | IF( tmask(ji,jj,jk) == 1 .AND. tmask(ji,jj,jk+1) == 0 ) THEN |
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101 | ikbot(ji,jj) = jk |
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102 | zwork(ji,jj) = vsed * trn(ji,jj,jk,jpdet) |
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103 | ENDIF |
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104 | END DO |
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105 | END DO |
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106 | END DO |
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107 | |
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108 | zgeolpoc = 0.e0 ! Initialization |
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109 | |
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110 | ! Release of nutrients from the "simple" sediment |
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111 | DO jj = 2, jpjm1 |
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112 | DO ji = 2, jpim1 |
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113 | tra(ji,jj,ikbot(ji,jj),jpno3) = tra(ji,jj,ikbot(ji,jj),jpno3) & |
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114 | & + sedlam * sedpocn(ji,jj) / fse3t(ji,jj,ikbot(ji,jj)) |
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115 | |
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116 | ! Deposition of organic matter in the sediment |
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117 | zgeolpoc = zgeolpoc + sedlostpoc * sedpocn(ji,jj) * e1t(ji,jj) * e2t(ji,jj) |
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118 | |
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119 | !!gm factorisationof rdt just bellow... |
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120 | sedpoca(ji,jj) = zwork(ji,jj) * rdt + dminl(ji,jj) * fbod(ji,jj) * rdt & |
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121 | & - sedlam * sedpocn(ji,jj) * rdt - sedlostpoc * sedpocn(ji,jj) * rdt |
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122 | |
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123 | END DO |
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124 | END DO |
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125 | |
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126 | DO jj = 2,jpjm1 |
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127 | DO ji = 2,jpim1 |
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128 | tra(ji,jj,1,jpno3) = tra(ji,jj,1,jpno3) + zgeolpoc * cmask(ji,jj) / areacot / fse3t(ji,jj,1) |
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129 | END DO |
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130 | END DO |
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131 | |
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132 | CALL lbc_lnk( sedpocn, 'T', 1. ) |
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133 | |
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134 | ! Oa & Ek: diagnostics depending on jpdia2d ! left as example |
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135 | # if defined key_trc_diaadd |
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136 | trc2d(:,:,19) = sedpocn(:,:) |
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137 | # endif |
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138 | |
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139 | ! Leap-frog scheme (only in explicit case, otherwise the |
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140 | ! ---------------- time stepping is already done in trczdf) |
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141 | IF( l_trczdf_exp .AND. (ln_trcadv_cen2 .OR. ln_trcadv_tvd) ) THEN |
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142 | zfact = 2. * rdttra(jk) * FLOAT( ndttrc ) |
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143 | IF( neuler == 0 .AND. kt == nittrc000 ) zfact = rdttra(jk) * FLOAT(ndttrc) |
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144 | sedpoca(:,:) = sedpocb(:,:) + zfact * sedpoca(:,:) |
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145 | ENDIF |
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146 | |
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147 | |
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148 | ! Time filter and swap of arrays |
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149 | ! ------------------------------ |
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150 | IF( ln_trcadv_cen2 .OR. ln_trcadv_tvd ) THEN ! centred or tvd scheme |
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151 | IF( neuler == 0 .AND. kt == nittrc000 ) THEN |
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152 | DO jj = 1, jpj |
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153 | DO ji = 1, jpi |
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154 | sedpocb(ji,jj) = sedpocn(ji,jj) |
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155 | sedpocn(ji,jj) = sedpoca(ji,jj) |
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156 | sedpoca(ji,jj) = 0.e0 |
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157 | END DO |
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158 | END DO |
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159 | ELSE |
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160 | DO jj = 1, jpj |
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161 | DO ji = 1, jpi |
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162 | sedpocb(ji,jj) = atfp * ( sedpocb(ji,jj) + sedpoca(ji,jj) ) & |
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163 | & + atfp1 * sedpocn(ji,jj) |
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164 | sedpocn(ji,jj) = sedpoca(ji,jj) |
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165 | sedpoca(ji,jj) = 0.e0 |
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166 | END DO |
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167 | END DO |
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168 | ENDIF |
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169 | ELSE ! case of smolar scheme or muscl |
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170 | sedpocb(:,:) = sedpoca(:,:) |
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171 | sedpocn(:,:) = sedpoca(:,:) |
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172 | sedpoca(:,:) = 0.e0 |
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173 | ENDIF |
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174 | ! |
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175 | IF( l_trdtrc ) THEN |
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176 | ztrbio(:,:,:) = tra(:,:,:,jpno3) - ztrbio(:,:,:) |
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177 | jl = 17 |
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178 | CALL trd_mod_trc( ztrbio, jl, kt ) ! handle the trend |
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179 | ENDIF |
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180 | |
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181 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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182 | WRITE(charout, FMT="('exp')") |
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183 | CALL prt_ctl_trc_info(charout) |
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184 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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185 | ENDIF |
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186 | |
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187 | END SUBROUTINE trc_exp |
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188 | |
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189 | #else |
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190 | !!====================================================================== |
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191 | !! Dummy module : No PISCES bio-model |
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192 | !!====================================================================== |
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193 | CONTAINS |
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194 | SUBROUTINE trc_exp( kt ) ! Empty routine |
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195 | INTEGER, INTENT( in ) :: kt |
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196 | WRITE(*,*) 'trc_exp: You should not have seen this print! error?', kt |
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197 | END SUBROUTINE trc_exp |
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198 | #endif |
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199 | |
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200 | !!====================================================================== |
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201 | END MODULE trcexp |
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