1 | MODULE p4zmeso |
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2 | !!====================================================================== |
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3 | !! *** MODULE p4zmeso *** |
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4 | !! TOP : PISCES Compute the sources/sinks for mesozooplankton |
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5 | !!====================================================================== |
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6 | !! History : 1.0 ! 2002 (O. Aumont) Original code |
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7 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
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8 | !!---------------------------------------------------------------------- |
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9 | #if defined key_pisces |
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10 | !!---------------------------------------------------------------------- |
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11 | !! 'key_pisces' PISCES bio-model |
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12 | !!---------------------------------------------------------------------- |
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13 | !! p4z_meso : Compute the sources/sinks for mesozooplankton |
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14 | !!---------------------------------------------------------------------- |
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15 | USE oce_trc ! |
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16 | USE trp_trc ! |
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17 | USE sms ! |
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18 | |
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19 | IMPLICIT NONE |
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20 | PRIVATE |
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21 | |
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22 | PUBLIC p4z_meso ! called in p4zbio.F90 |
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23 | |
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24 | !!* Substitution |
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25 | # include "domzgr_substitute.h90" |
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26 | !!---------------------------------------------------------------------- |
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27 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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28 | !! $Header:$ |
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29 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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30 | !!---------------------------------------------------------------------- |
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31 | |
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32 | CONTAINS |
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33 | |
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34 | SUBROUTINE p4z_meso |
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35 | !!--------------------------------------------------------------------- |
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36 | !! *** ROUTINE p4z_meso *** |
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37 | !! |
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38 | !! ** Purpose : Compute the sources/sinks for mesozooplankton |
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39 | !! |
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40 | !! ** Method : - ??? |
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41 | !!--------------------------------------------------------------------- |
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42 | INTEGER :: ji, jj, jk |
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43 | REAL(wp) :: zcompadi, zcompaph, zcompapoc, zcompaz |
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44 | REAL(wp) :: zfact, zstep, zcompam, zdenom, zgraze2 |
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45 | !!--------------------------------------------------------------------- |
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46 | |
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47 | zstep = rfact2 / rjjss ! Time step duration for biology |
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48 | |
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49 | DO jk = 1, jpkm1 |
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50 | DO jj = 1, jpj |
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51 | DO ji = 1, jpi |
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52 | |
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53 | zcompam = MAX( ( trn(ji,jj,jk,jpmes) - 1.e-9 ), 0.e0 ) |
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54 | # if defined key_off_degrad |
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55 | zfact = zstep * tgfunc(ji,jj,jk) * zcompam * facvol(ji,jj,jk) |
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56 | # else |
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57 | zfact = zstep * tgfunc(ji,jj,jk) * zcompam |
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58 | # endif |
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59 | |
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60 | ! Respiration rates of both zooplankton |
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61 | ! ------------------------------------- |
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62 | respz2(ji,jj,jk) = resrat2 * zfact * ( 1. + 3. * nitrfac(ji,jj,jk) ) & |
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63 | & * trn(ji,jj,jk,jpmes) / ( xkmort + trn(ji,jj,jk,jpmes) ) |
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64 | |
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65 | ! Zooplankton mortality. A square function has been selected with |
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66 | ! no real reason except that it seems to be more stable and may |
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67 | ! mimic predation. |
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68 | ! --------------------------------------------------------------- |
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69 | tortz2(ji,jj,jk) = mzrat2 * 1.e6 * zfact * trn(ji,jj,jk,jpmes) |
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70 | ! |
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71 | END DO |
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72 | END DO |
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73 | END DO |
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74 | |
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75 | DO jk = 1, jpkm1 |
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76 | DO jj = 1, jpj |
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77 | DO ji = 1, jpi |
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78 | |
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79 | zcompadi = MAX( ( trn(ji,jj,jk,jpdia) - 1.e-8 ), 0.e0 ) |
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80 | zcompaz = MAX( ( trn(ji,jj,jk,jpzoo) - 1.e-8 ), 0.e0 ) |
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81 | zcompaph = MAX( ( trn(ji,jj,jk,jpphy) - 2.e-7 ), 0.e0 ) |
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82 | zcompapoc = MAX( ( trn(ji,jj,jk,jppoc) - 1.e-8 ), 0.e0 ) |
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83 | |
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84 | ! Microzooplankton grazing |
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85 | ! ------------------------ |
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86 | zdenom = 1. / ( xkgraz2 + xprefc * trn(ji,jj,jk,jpdia) & |
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87 | & + xprefz * trn(ji,jj,jk,jpzoo) & |
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88 | & + xprefp * trn(ji,jj,jk,jpphy) & |
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89 | & + xprefpoc * trn(ji,jj,jk,jppoc) ) |
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90 | |
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91 | zgraze2 = grazrat2 * zstep * Tgfunc2(ji,jj,jk) * zdenom & |
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92 | # if defined key_off_degrad |
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93 | & * facvol(ji,jj,jk) & |
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94 | # endif |
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95 | & * trn(ji,jj,jk,jpmes) |
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96 | |
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97 | grazd (ji,jj,jk) = zgraze2 * xprefc * zcompadi |
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98 | grazz (ji,jj,jk) = zgraze2 * xprefz * zcompaz |
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99 | grazn (ji,jj,jk) = zgraze2 * xprefp * zcompaph |
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100 | grazpoc(ji,jj,jk) = zgraze2 * xprefpoc * zcompapoc |
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101 | |
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102 | graznf (ji,jj,jk) = grazn (ji,jj,jk) * trn(ji,jj,jk,jpnfe) / (trn(ji,jj,jk,jpphy) + rtrn) |
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103 | |
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104 | graznch(ji,jj,jk) = grazn (ji,jj,jk) * trn(ji,jj,jk,jpnch) / (trn(ji,jj,jk,jpphy) + rtrn) |
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105 | |
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106 | grazs (ji,jj,jk) = grazd (ji,jj,jk) * trn(ji,jj,jk,jpbsi) / (trn(ji,jj,jk,jpdia) + rtrn) |
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107 | |
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108 | grazf (ji,jj,jk) = grazd (ji,jj,jk) * trn(ji,jj,jk,jpdfe) / (trn(ji,jj,jk,jpdia) + rtrn) |
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109 | |
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110 | grazdch(ji,jj,jk) = grazd (ji,jj,jk) * trn(ji,jj,jk,jpdch) / (trn(ji,jj,jk,jpdia) + rtrn) |
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111 | |
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112 | grazpof(ji,jj,jk) = grazpoc(ji,jj,jk) * trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) |
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113 | END DO |
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114 | END DO |
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115 | END DO |
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116 | |
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117 | DO jk = 1, jpkm1 |
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118 | DO jj = 1, jpj |
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119 | DO ji = 1, jpi |
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120 | |
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121 | ! Mesozooplankton flux feeding on GOC |
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122 | ! ---------------------------------- |
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123 | # if ! defined key_kriest |
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124 | grazffe(ji,jj,jk) = 5.e3 * zstep * wsbio4(ji,jj,jk) & |
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125 | # if defined key_off_degrad |
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126 | & * facvol(ji,jj,jk) & |
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127 | # endif |
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128 | & * tgfunc2(ji,jj,jk) * trn(ji,jj,jk,jpgoc) * trn(ji,jj,jk,jpmes) |
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129 | |
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130 | grazfff(ji,jj,jk) = grazffe(ji,jj,jk) & |
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131 | & * trn(ji,jj,jk,jpbfe) / (trn(ji,jj,jk,jpgoc) + rtrn) |
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132 | # else |
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133 | ! KRIEST3 |
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134 | grazffe(ji,jj,jk) = 0.5 * 1.3e-2 / 5.5e-7 * 0.3 * zstep * wsbio3(ji,jj,jk) & |
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135 | & * tgfunc(ji,jj,jk) * trn(ji,jj,jk,jppoc) * trn(ji,jj,jk,jpmes) & |
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136 | # if defined key_off_degrad |
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137 | & * facvol(ji,jj,jk) & |
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138 | # endif |
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139 | & / (trn(ji,jj,jk,jppoc) * 1.e7 + 0.1) |
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140 | |
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141 | !!C grazffe(ji,jj,jk) = 5.e3 * zstep * wsbio3(ji,jj,jk) |
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142 | !!C & * tgfunc2(ji,jj,jk) * trn(ji,jj,jk,jppoc) * trn(ji,jj,jk,jpmes) |
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143 | !!C# if defined key_off_degrad |
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144 | !!C & * facvol(ji,jj,jk) |
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145 | !!C# endif |
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146 | |
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147 | grazfff(ji,jj,jk) = grazffe(ji,jj,jk) & |
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148 | & * trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) |
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149 | # endif |
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150 | END DO |
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151 | END DO |
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152 | END DO |
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153 | |
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154 | DO jk = 1, jpkm1 |
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155 | DO jj = 1, jpj |
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156 | DO ji = 1, jpi |
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157 | |
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158 | ! Mesozooplankton efficiency |
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159 | ! -------------------------- |
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160 | grarem2(ji,jj,jk) = (grazd(ji,jj,jk) + grazz(ji,jj,jk) & |
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161 | & + grazn(ji,jj,jk) + grazpoc(ji,jj,jk) + grazffe(ji,jj,jk)) & |
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162 | & * (1.-epsher2-unass2) |
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163 | #if ! defined key_kriest |
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164 | grafer2(ji,jj,jk) = (grazf(ji,jj,jk) + graznf(ji,jj,jk) & |
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165 | & + grazz(ji,jj,jk) * ferat3 + grazpof(ji,jj,jk) & |
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166 | & + grazfff(ji,jj,jk)) * (1.-epsher2-unass2) & |
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167 | & + epsher2 * (grazd(ji,jj,jk) * MAX( & |
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168 | & (trn(ji,jj,jk,jpdfe) / (trn(ji,jj,jk,jpdia) + rtrn) & |
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169 | & -ferat3),0.) + grazn(ji,jj,jk) * MAX( & |
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170 | & (trn(ji,jj,jk,jpnfe) / (trn(ji,jj,jk,jpphy) + rtrn) & |
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171 | & -ferat3),0.) + grazpoc(ji,jj,jk) * MAX( & |
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172 | & (trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) & |
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173 | & -ferat3),0.) + grazffe(ji,jj,jk) * MAX( & |
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174 | & (trn(ji,jj,jk,jpbfe) / (trn(ji,jj,jk,jpgoc) + rtrn) & |
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175 | & -ferat3),0.) ) |
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176 | #else |
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177 | grafer2(ji,jj,jk) = (grazf(ji,jj,jk) + graznf(ji,jj,jk) & |
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178 | & + grazz(ji,jj,jk) * ferat3 + grazpof(ji,jj,jk) & |
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179 | & + grazfff(ji,jj,jk)) * (1.-epsher2-unass2) & |
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180 | & + epsher2 * (grazd(ji,jj,jk) * MAX( & |
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181 | & (trn(ji,jj,jk,jpdfe) / (trn(ji,jj,jk,jpdia) + rtrn) & |
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182 | & -ferat3),0.) + grazn(ji,jj,jk) * MAX( & |
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183 | & (trn(ji,jj,jk,jpnfe) / (trn(ji,jj,jk,jpphy) + rtrn) & |
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184 | & -ferat3),0.) + grazpoc(ji,jj,jk) * MAX( & |
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185 | & (trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) & |
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186 | & -ferat3),0.) + grazffe(ji,jj,jk) * MAX( & |
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187 | & (trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) & |
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188 | & -ferat3),0.) ) |
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189 | #endif |
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190 | grapoc2(ji,jj,jk) = (grazd(ji,jj,jk) + grazz(ji,jj,jk) & |
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191 | & + grazn(ji,jj,jk) + grazpoc(ji,jj,jk) + grazffe(ji,jj,jk)) * unass2 |
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192 | ! |
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193 | END DO |
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194 | END DO |
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195 | END DO |
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196 | ! |
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197 | END SUBROUTINE p4z_meso |
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198 | |
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199 | #else |
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200 | !!====================================================================== |
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201 | !! Dummy module : No PISCES bio-model |
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202 | !!====================================================================== |
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203 | CONTAINS |
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204 | SUBROUTINE p4z_meso ! Empty routine |
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205 | END SUBROUTINE p4z_meso |
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206 | #endif |
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207 | |
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208 | !!====================================================================== |
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209 | END MODULE p4zmeso |
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