1 | MODULE p4zagg |
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2 | !!====================================================================== |
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3 | !! *** MODULE p4zagg *** |
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4 | !! TOP : PISCES aggregation of particles |
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5 | !!====================================================================== |
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6 | !! History : 1.0 ! 2004 (O. Aumont) Original code |
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7 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
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8 | !! 3.4 ! 2011-06 (O. Aumont, C. Ethe) Change aggregation formula |
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9 | !! 3.5 ! 2012-07 (O. Aumont) Introduce potential time-splitting |
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10 | !!---------------------------------------------------------------------- |
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11 | #if defined key_pisces |
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12 | !!---------------------------------------------------------------------- |
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13 | !! p4z_agg : Compute aggregation of particles |
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14 | !!---------------------------------------------------------------------- |
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15 | USE oce_trc ! shared variables between ocean and passive tracers |
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16 | USE trc ! passive tracers common variables |
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17 | USE sms_pisces ! PISCES Source Minus Sink variables |
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18 | USE p4zsink ! PISCES sinking fluxes |
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19 | USE prtctl_trc ! print control for debugging |
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20 | USE iom ! I/O manager |
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21 | USE lib_mpp |
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22 | |
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23 | IMPLICIT NONE |
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24 | PRIVATE |
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25 | |
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26 | PUBLIC p4z_agg ! called in p4zbio.F90 |
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27 | |
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28 | !!* Substitution |
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29 | # include "top_substitute.h90" |
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30 | !!---------------------------------------------------------------------- |
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31 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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32 | !! $Id: p4zagg.F90 3160 2011-11-20 14:27:18Z cetlod $ |
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33 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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34 | !!---------------------------------------------------------------------- |
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35 | CONTAINS |
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36 | |
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37 | #if ! defined key_kriest |
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38 | !!---------------------------------------------------------------------- |
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39 | !! 'standard parameterisation' ??? |
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40 | !!---------------------------------------------------------------------- |
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41 | |
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42 | SUBROUTINE p4z_agg ( kt, knt ) |
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43 | !!--------------------------------------------------------------------- |
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44 | !! *** ROUTINE p4z_agg *** |
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45 | !! |
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46 | !! ** Purpose : Compute aggregation of particles |
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47 | !! |
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48 | !! ** Method : - ??? |
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49 | !!--------------------------------------------------------------------- |
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50 | INTEGER, INTENT(in) :: kt, knt |
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51 | INTEGER :: ji, jj, jk |
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52 | REAL(wp) :: zagg1, zagg2, zagg3, zagg4 |
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53 | REAL(wp) :: zagg , zaggfe, zaggdoc, zaggdoc2, zaggdoc3 |
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54 | REAL(wp) :: zfact, zstep |
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55 | CHARACTER (len=25) :: charout |
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56 | !!--------------------------------------------------------------------- |
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57 | ! |
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58 | IF( nn_timing == 1 ) CALL timing_start('p4z_agg') |
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59 | |
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60 | ! |
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61 | ! Exchange between organic matter compartments due to coagulation/disaggregation |
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62 | ! --------------------------------------------------- |
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63 | DO jk = 1, jpkm1 |
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64 | DO jj = 1, jpj |
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65 | DO ji = 1, jpi |
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66 | ! |
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67 | zstep = xstep |
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68 | # if defined key_degrad |
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69 | zstep = zstep * facvol(ji,jj,jk) |
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70 | # endif |
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71 | zfact = zstep * xdiss(ji,jj,jk) |
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72 | ! Part I : Coagulation dependent on turbulence |
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73 | zagg1 = 25.9 * zfact * trb(ji,jj,jk,jppoc) * trb(ji,jj,jk,jppoc) |
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74 | zagg2 = 4452. * zfact * trb(ji,jj,jk,jppoc) * trb(ji,jj,jk,jpgoc) |
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75 | |
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76 | ! Part II : Differential settling |
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77 | |
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78 | ! Aggregation of small into large particles |
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79 | zagg3 = 47.1 * zstep * trb(ji,jj,jk,jppoc) * trb(ji,jj,jk,jpgoc) |
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80 | zagg4 = 3.3 * zstep * trb(ji,jj,jk,jppoc) * trb(ji,jj,jk,jppoc) |
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81 | |
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82 | zagg = zagg1 + zagg2 + zagg3 + zagg4 |
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83 | zaggfe = zagg * trb(ji,jj,jk,jpsfe) / ( trb(ji,jj,jk,jppoc) + rtrn ) |
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84 | |
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85 | ! Aggregation of DOC to POC : |
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86 | ! 1st term is shear aggregation of DOC-DOC |
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87 | ! 2nd term is shear aggregation of DOC-POC |
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88 | ! 3rd term is differential settling of DOC-POC |
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89 | zaggdoc = ( ( 0.369 * 0.3 * trb(ji,jj,jk,jpdoc) + 102.4 * trb(ji,jj,jk,jppoc) ) * zfact & |
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90 | & + 2.4 * zstep * trb(ji,jj,jk,jppoc) ) * 0.3 * trb(ji,jj,jk,jpdoc) |
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91 | ! transfer of DOC to GOC : |
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92 | ! 1st term is shear aggregation |
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93 | ! 2nd term is differential settling |
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94 | zaggdoc2 = ( 3.53E3 * zfact + 0.1 * zstep ) * trb(ji,jj,jk,jpgoc) * 0.3 * trb(ji,jj,jk,jpdoc) |
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95 | ! tranfer of DOC to POC due to brownian motion |
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96 | zaggdoc3 = 114. * 0.3 * trb(ji,jj,jk,jpdoc) *zstep * 0.3 * trb(ji,jj,jk,jpdoc) |
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97 | |
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98 | ! Update the trends |
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99 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) - zagg + zaggdoc + zaggdoc3 |
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100 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zagg + zaggdoc2 |
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101 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) - zaggfe |
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102 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + zaggfe |
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103 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) - zaggdoc - zaggdoc2 - zaggdoc3 |
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104 | ! |
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105 | conspoc(ji,jj,jk) = conspoc(ji,jj,jk) - zagg + zaggdoc + zaggdoc3 |
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106 | prodgoc(ji,jj,jk) = prodgoc(ji,jj,jk) + zagg + zaggdoc2 |
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107 | ! |
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108 | END DO |
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109 | END DO |
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110 | END DO |
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111 | ! |
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112 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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113 | WRITE(charout, FMT="('agg')") |
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114 | CALL prt_ctl_trc_info(charout) |
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115 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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116 | ENDIF |
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117 | ! |
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118 | IF( nn_timing == 1 ) CALL timing_stop('p4z_agg') |
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119 | ! |
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120 | END SUBROUTINE p4z_agg |
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121 | |
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122 | #else |
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123 | !!---------------------------------------------------------------------- |
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124 | !! 'Kriest parameterisation' key_kriest ??? |
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125 | !!---------------------------------------------------------------------- |
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126 | |
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127 | SUBROUTINE p4z_agg ( kt, knt ) |
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128 | !!--------------------------------------------------------------------- |
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129 | !! *** ROUTINE p4z_agg *** |
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130 | !! |
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131 | !! ** Purpose : Compute aggregation of particles |
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132 | !! |
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133 | !! ** Method : - ??? |
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134 | !!--------------------------------------------------------------------- |
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135 | ! |
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136 | INTEGER, INTENT(in) :: kt, knt |
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137 | ! |
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138 | INTEGER :: ji, jj, jk |
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139 | REAL(wp) :: zagg1, zagg2, zagg3, zagg4, zagg5, zfract, zaggsi, zaggsh |
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140 | REAL(wp) :: zagg , zaggdoc, zaggdoc1, znumdoc |
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141 | REAL(wp) :: znum , zeps, zfm, zgm, zsm |
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142 | REAL(wp) :: zdiv , zdiv1, zdiv2, zdiv3, zdiv4, zdiv5 |
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143 | REAL(wp) :: zval1, zval2, zval3, zval4 |
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144 | REAL(wp) :: zfact |
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145 | CHARACTER (len=25) :: charout |
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146 | !!--------------------------------------------------------------------- |
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147 | ! |
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148 | IF( nn_timing == 1 ) CALL timing_start('p4z_agg') |
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149 | ! |
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150 | ! Exchange between organic matter compartments due to coagulation/disaggregation |
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151 | ! --------------------------------------------------- |
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152 | |
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153 | zval1 = 1. + xkr_zeta |
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154 | zval2 = 1. + xkr_eta |
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155 | zval3 = 3. + xkr_eta |
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156 | zval4 = 4. + xkr_eta |
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157 | |
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158 | DO jk = 1,jpkm1 |
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159 | DO jj = 1,jpj |
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160 | DO ji = 1,jpi |
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161 | IF( tmask(ji,jj,jk) /= 0.e0 ) THEN |
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162 | |
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163 | znum = trb(ji,jj,jk,jppoc)/(trb(ji,jj,jk,jpnum)+rtrn) / xkr_massp |
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164 | !-------------- To avoid sinking speed over 50 m/day ------- |
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165 | znum = min(xnumm(jk),znum) |
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166 | znum = MAX( 1.1,znum) |
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167 | !------------------------------------------------------------ |
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168 | zeps = ( zval1 * znum - 1.) / ( znum - 1.) |
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169 | zdiv = MAX( 1.e-4, ABS( zeps - zval3) ) * SIGN( 1., zeps - zval3 ) |
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170 | zdiv1 = MAX( 1.e-4, ABS( zeps - 4. ) ) * SIGN( 1., zeps - 4. ) |
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171 | zdiv2 = zeps - 2. |
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172 | zdiv3 = zeps - 3. |
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173 | zdiv4 = zeps - zval2 |
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174 | zdiv5 = 2.* zeps - zval4 |
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175 | zfm = xkr_frac**( 1.- zeps ) |
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176 | zsm = xkr_frac**xkr_eta |
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177 | |
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178 | ! Part I : Coagulation dependant on turbulence |
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179 | ! ---------------------------------------------- |
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180 | |
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181 | zagg1 = 0.163 * trb(ji,jj,jk,jpnum)**2 & |
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182 | & * 2.*( (zfm-1.)*(zfm*xkr_mass_max**3-xkr_mass_min**3) & |
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183 | & * (zeps-1)/zdiv1 + 3.*(zfm*xkr_mass_max-xkr_mass_min) & |
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184 | & * (zfm*xkr_mass_max**2-xkr_mass_min**2) & |
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185 | & * (zeps-1.)**2/(zdiv2*zdiv3)) |
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186 | zagg2 = 2*0.163*trb(ji,jj,jk,jpnum)**2*zfm* & |
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187 | & ((xkr_mass_max**3+3.*(xkr_mass_max**2 & |
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188 | & *xkr_mass_min*(zeps-1.)/zdiv2 & |
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189 | & +xkr_mass_max*xkr_mass_min**2*(zeps-1.)/zdiv3) & |
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190 | & +xkr_mass_min**3*(zeps-1)/zdiv1) & |
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191 | & -zfm*xkr_mass_max**3*(1.+3.*((zeps-1.)/ & |
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192 | & (zeps-2.)+(zeps-1.)/zdiv3)+(zeps-1.)/zdiv1)) |
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193 | |
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194 | zagg3 = 0.163*trb(ji,jj,jk,jpnum)**2*zfm**2*8. * xkr_mass_max**3 |
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195 | |
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196 | ! Aggregation of small into large particles |
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197 | ! Part II : Differential settling |
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198 | ! ---------------------------------------------- |
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199 | |
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200 | zagg4 = 2.*3.141*0.125*trb(ji,jj,jk,jpnum)**2* & |
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201 | & xkr_wsbio_min*(zeps-1.)**2 & |
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202 | & *(xkr_mass_min**2*((1.-zsm*zfm)/(zdiv3*zdiv4) & |
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203 | & -(1.-zfm)/(zdiv*(zeps-1.)))- & |
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204 | & ((zfm*zfm*xkr_mass_max**2*zsm-xkr_mass_min**2) & |
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205 | & *xkr_eta)/(zdiv*zdiv3*zdiv5) ) |
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206 | |
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207 | zagg5 = 2.*3.141*0.125*trb(ji,jj,jk,jpnum)**2 & |
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208 | & *(zeps-1.)*zfm*xkr_wsbio_min & |
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209 | & *(zsm*(xkr_mass_min**2-zfm*xkr_mass_max**2) & |
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210 | & /zdiv3-(xkr_mass_min**2-zfm*zsm*xkr_mass_max**2) & |
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211 | & /zdiv) |
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212 | |
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213 | ! |
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214 | ! Fractionnation by swimming organisms |
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215 | ! ------------------------------------ |
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216 | |
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217 | zfract = 2.*3.141*0.125*trb(ji,jj,jk,jpmes)*12./0.12/0.06**3*trb(ji,jj,jk,jpnum) & |
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218 | & * (0.01/xkr_mass_min)**(1.-zeps)*0.1**2 & |
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219 | & * 10000.*xstep |
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220 | |
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221 | ! Aggregation of DOC to small particles |
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222 | ! -------------------------------------- |
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223 | |
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224 | zaggdoc = 0.83 * trb(ji,jj,jk,jpdoc) * xstep * xdiss(ji,jj,jk) * trb(ji,jj,jk,jpdoc) & |
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225 | & + 0.005 * 231. * trb(ji,jj,jk,jpdoc) * xstep * trb(ji,jj,jk,jpdoc) |
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226 | zaggdoc1 = 271. * trb(ji,jj,jk,jppoc) * xstep * xdiss(ji,jj,jk) * trb(ji,jj,jk,jpdoc) & |
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227 | & + 0.02 * 16706. * trb(ji,jj,jk,jppoc) * xstep * trb(ji,jj,jk,jpdoc) |
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228 | |
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229 | # if defined key_degrad |
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230 | zagg1 = zagg1 * facvol(ji,jj,jk) |
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231 | zagg2 = zagg2 * facvol(ji,jj,jk) |
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232 | zagg3 = zagg3 * facvol(ji,jj,jk) |
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233 | zagg4 = zagg4 * facvol(ji,jj,jk) |
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234 | zagg5 = zagg5 * facvol(ji,jj,jk) |
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235 | zaggdoc = zaggdoc * facvol(ji,jj,jk) |
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236 | zaggdoc1 = zaggdoc1 * facvol(ji,jj,jk) |
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237 | # endif |
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238 | zaggsh = ( zagg1 + zagg2 + zagg3 ) * rfact2 * xdiss(ji,jj,jk) / 1000. |
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239 | zaggsi = ( zagg4 + zagg5 ) * xstep / 10. |
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240 | zagg = 0.5 * xkr_stick * ( zaggsh + zaggsi ) |
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241 | ! |
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242 | znumdoc = trb(ji,jj,jk,jpnum) / ( trb(ji,jj,jk,jppoc) + rtrn ) |
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243 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zaggdoc + zaggdoc1 |
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244 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + zfract + zaggdoc / xkr_massp - zagg |
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245 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) - zaggdoc - zaggdoc1 |
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246 | |
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247 | ENDIF |
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248 | END DO |
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249 | END DO |
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250 | END DO |
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251 | ! |
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252 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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253 | WRITE(charout, FMT="('agg')") |
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254 | CALL prt_ctl_trc_info(charout) |
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255 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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256 | ENDIF |
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257 | ! |
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258 | IF( nn_timing == 1 ) CALL timing_stop('p4z_agg') |
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259 | ! |
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260 | END SUBROUTINE p4z_agg |
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261 | |
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262 | #endif |
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263 | |
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264 | #else |
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265 | !!====================================================================== |
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266 | !! Dummy module : No PISCES bio-model |
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267 | !!====================================================================== |
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268 | CONTAINS |
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269 | SUBROUTINE p4z_agg ! Empty routine |
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270 | END SUBROUTINE p4z_agg |
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271 | #endif |
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272 | |
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273 | !!====================================================================== |
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274 | END MODULE p4zagg |
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