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 | !! 3.4 ! 2011-06 (O. Aumont, C. Ethe) Quota model for iron |
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9 | !!---------------------------------------------------------------------- |
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10 | #if defined key_pisces |
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11 | !!---------------------------------------------------------------------- |
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12 | !! 'key_pisces' PISCES bio-model |
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13 | !!---------------------------------------------------------------------- |
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14 | !! p4z_meso : Compute the sources/sinks for mesozooplankton |
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15 | !! p4z_meso_init : Initialization of the parameters for mesozooplankton |
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16 | !!---------------------------------------------------------------------- |
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17 | USE oce_trc ! shared variables between ocean and passive tracers |
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18 | USE trc ! passive tracers common variables |
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19 | USE sms_pisces ! PISCES Source Minus Sink variables |
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20 | USE p4zsink ! vertical flux of particulate matter due to sinking |
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21 | USE p4zint ! interpolation and computation of various fields |
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22 | USE p4zprod ! production |
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23 | USE prtctl_trc ! print control for debugging |
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24 | USE iom ! I/O manager |
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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 p4z_meso ! called in p4zbio.F90 |
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30 | PUBLIC p4z_meso_init ! called in trcsms_pisces.F90 |
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31 | |
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32 | !! * Shared module variables |
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33 | REAL(wp), PUBLIC :: part2 = 0.5_wp !: part of calcite not dissolved in mesozoo guts |
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34 | REAL(wp), PUBLIC :: xprefc = 1.0_wp !: mesozoo preference for POC |
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35 | REAL(wp), PUBLIC :: xprefp = 0.3_wp !: mesozoo preference for nanophyto |
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36 | REAL(wp), PUBLIC :: xprefz = 1.0_wp !: mesozoo preference for diatoms |
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37 | REAL(wp), PUBLIC :: xprefpoc = 0.3_wp !: mesozoo preference for POC |
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38 | REAL(wp), PUBLIC :: xthresh2 = 2E-7_wp !: feeding threshold for mesozooplankton |
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39 | REAL(wp), PUBLIC :: resrat2 = 0.005_wp !: exsudation rate of mesozooplankton |
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40 | REAL(wp), PUBLIC :: mzrat2 = 0.04_wp !: microzooplankton mortality rate |
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41 | REAL(wp), PUBLIC :: grazrat2 = 0.9_wp !: maximal mesozoo grazing rate |
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42 | REAL(wp), PUBLIC :: xkgraz2 = 20E-6_wp !: non assimilated fraction of P by mesozoo |
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43 | REAL(wp), PUBLIC :: unass2 = 0.3_wp !: Efficicency of mesozoo growth |
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44 | REAL(wp), PUBLIC :: sigma2 = 0.6_wp !: Fraction of mesozoo excretion as DOM |
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45 | REAL(wp), PUBLIC :: epsher2 = 0.3_wp !: half sturation constant for grazing 2 |
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46 | REAL(wp), PUBLIC :: grazflux = 3.E3_wp !: mesozoo flux feeding rate |
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47 | |
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48 | !!* Substitution |
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49 | # include "top_substitute.h90" |
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50 | !!---------------------------------------------------------------------- |
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51 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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52 | !! $Id$ |
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53 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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54 | !!---------------------------------------------------------------------- |
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55 | |
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56 | CONTAINS |
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57 | |
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58 | SUBROUTINE p4z_meso( kt, jnt ) |
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59 | !!--------------------------------------------------------------------- |
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60 | !! *** ROUTINE p4z_meso *** |
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61 | !! |
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62 | !! ** Purpose : Compute the sources/sinks for mesozooplankton |
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63 | !! |
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64 | !! ** Method : - ??? |
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65 | !!--------------------------------------------------------------------- |
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66 | INTEGER, INTENT(in) :: kt, jnt ! ocean time step |
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67 | INTEGER :: ji, jj, jk |
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68 | REAL(wp) :: zcompadi, zcompaph, zcompapoc, zcompaz, zcompam |
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69 | REAL(wp) :: zgraze2 , zdenom, zncratio |
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70 | REAL(wp) :: zfact , zstep, zfood, zfoodlim |
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71 | REAL(wp) :: zepshert, zepsherv, zgrarsig, zgraztot, zgraztotf |
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72 | REAL(wp) :: zgrarem2, zgrafer2, zgrapoc2, zprcaca, zmortz2, zgrasrat |
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73 | #if defined key_kriest |
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74 | REAL znumpoc |
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75 | #endif |
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76 | REAL(wp) :: zrespz2, ztortz2, zgrazd, zgrazz, zgrazpof |
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77 | REAL(wp) :: zgrazn, zgrazpoc, zgraznf, zgrazf |
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78 | REAL(wp) :: zgrazfff, zgrazffe |
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79 | CHARACTER (len=25) :: charout |
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80 | REAL(wp) :: zrfact2 |
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81 | |
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82 | !!--------------------------------------------------------------------- |
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83 | |
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84 | DO jk = 1, jpkm1 |
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85 | DO jj = 1, jpj |
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86 | DO ji = 1, jpi |
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87 | zcompam = MAX( ( trn(ji,jj,jk,jpmes) - 1.e-8 ), 0.e0 ) |
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88 | # if defined key_degrad |
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89 | zstep = xstep * facvol(ji,jj,jk) |
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90 | # else |
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91 | zstep = xstep |
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92 | # endif |
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93 | zfact = zstep * tgfunc(ji,jj,jk) * zcompam |
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94 | |
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95 | ! Respiration rates of both zooplankton |
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96 | ! ------------------------------------- |
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97 | zrespz2 = resrat2 * zfact * trn(ji,jj,jk,jpmes) / ( xkmort + trn(ji,jj,jk,jpmes) ) & |
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98 | & + resrat2 * zfact * 3. * nitrfac(ji,jj,jk) |
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99 | |
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100 | ! Zooplankton mortality. A square function has been selected with |
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101 | ! no real reason except that it seems to be more stable and may mimic predation |
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102 | ! --------------------------------------------------------------- |
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103 | ztortz2 = mzrat2 * 1.e6 * zfact * trn(ji,jj,jk,jpmes) |
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104 | ! |
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105 | |
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106 | zcompadi = MAX( ( trn(ji,jj,jk,jpdia) - 1.e-8 ), 0.e0 ) |
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107 | zcompaz = MAX( ( trn(ji,jj,jk,jpzoo) - 1.e-8 ), 0.e0 ) |
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108 | zcompaph = MAX( ( trn(ji,jj,jk,jpphy) - 1.e-8 ), 0.e0 ) |
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109 | zcompapoc = MAX( ( trn(ji,jj,jk,jppoc) - 1.e-8 ), 0.e0 ) |
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110 | |
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111 | zfood = xprefc * zcompadi + xprefz * zcompaz + xprefp * zcompaph + xprefpoc * zcompapoc + rtrn |
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112 | zfoodlim = MAX( 0., zfood - xthresh2 ) |
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113 | zdenom = zfoodlim / zfood / (xkgraz2 + zfoodlim) |
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114 | |
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115 | zgraze2 = grazrat2 * zstep * tgfunc2(ji,jj,jk) * trn(ji,jj,jk,jpmes) * zdenom |
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116 | zgrazd = zgraze2 * xprefc * zcompadi |
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117 | zgrazz = zgraze2 * xprefz * zcompaz |
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118 | zgrazn = zgraze2 * xprefp * zcompaph |
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119 | zgrazpoc = zgraze2 * xprefpoc * zcompapoc |
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120 | |
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121 | zgraznf = zgrazn * trn(ji,jj,jk,jpnfe) / (trn(ji,jj,jk,jpphy) + rtrn) |
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122 | zgrazf = zgrazd * trn(ji,jj,jk,jpdfe) / (trn(ji,jj,jk,jpdia) + rtrn) |
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123 | zgrazpof = zgrazpoc * trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) |
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124 | |
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125 | ! Mesozooplankton flux feeding on GOC |
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126 | ! ---------------------------------- |
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127 | # if ! defined key_kriest |
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128 | zgrazffe = grazflux * zstep * wsbio4(ji,jj,jk) & |
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129 | & * tgfunc2(ji,jj,jk) * trn(ji,jj,jk,jpgoc) * trn(ji,jj,jk,jpmes) |
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130 | zgrazfff = zgrazffe * trn(ji,jj,jk,jpbfe) / (trn(ji,jj,jk,jpgoc) + rtrn) |
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131 | # else |
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132 | !!--------------------------- KRIEST3 ------------------------------------------- |
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133 | !! zgrazffe = 0.5 * 1.3e-2 / 5.5e-7 * 0.3 * zstep * wsbio3(ji,jj,jk) & |
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134 | !! & * tgfunc(ji,jj,jk) * trn(ji,jj,jk,jppoc) * trn(ji,jj,jk,jpmes) & |
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135 | !! # if defined key_degrad |
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136 | !! & * facvol(ji,jj,jk) & |
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137 | !! # endif |
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138 | !! & / (trn(ji,jj,jk,jppoc) * 1.e7 + 0.1) |
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139 | !!--------------------------- KRIEST3 ------------------------------------------- |
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140 | |
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141 | zgrazffe = grazflux * zstep * wsbio3(ji,jj,jk) & |
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142 | & * tgfunc2(ji,jj,jk) * trn(ji,jj,jk,jppoc) * trn(ji,jj,jk,jpmes) |
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143 | zgrazfff = zgrazffe * trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) |
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144 | # endif |
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145 | ! |
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146 | zgraztot = zgrazd + zgrazz + zgrazn + zgrazpoc + zgrazffe |
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147 | zgraztotf = zgrazf + zgraznf + zgrazz * ferat3 + zgrazpof + zgrazfff |
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148 | #if defined key_diatrc |
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149 | ! Total grazing ( grazing by microzoo is already computed in p4zmicro ) |
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150 | grazing(ji,jj,jk) = grazing(ji,jj,jk) + zgraztot |
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151 | #endif |
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152 | ! Mesozooplankton efficiency |
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153 | ! -------------------------- |
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154 | zgrasrat = zgraztotf / ( zgraztot + rtrn ) |
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155 | zncratio = ( xprefc * zcompadi * quotad(ji,jj,jk) & |
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156 | & + xprefp * zcompaph * quotan(ji,jj,jk) & |
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157 | & + xprefz * zcompaz & |
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158 | & + xprefpoc * zcompapoc ) / zfood |
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159 | zepshert = epsher2 * MIN( 1., zncratio ) |
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160 | zepsherv = zepshert * MIN( 1., zgrasrat / ferat3 ) |
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161 | zgrarem2 = zgraztot * ( 1. - zepsherv - unass2 ) |
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162 | zgrafer2 = zgraztot * MAX( 0. , ( 1. - unass2 ) * zgrasrat - ferat3 * zepshert ) |
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163 | zgrapoc2 = zgraztot * unass2 |
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164 | |
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165 | ! Update the arrays TRA which contain the biological sources and sinks |
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166 | zgrarsig = zgrarem2 * sigma2 |
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167 | tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) + zgrarsig |
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168 | tra(ji,jj,jk,jpnh4) = tra(ji,jj,jk,jpnh4) + zgrarsig |
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169 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) + zgrarem2 - zgrarsig |
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170 | tra(ji,jj,jk,jpoxy) = tra(ji,jj,jk,jpoxy) - o2ut * zgrarsig |
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171 | tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + zgrafer2 |
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172 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zgrarsig |
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173 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + rno3 * zgrarsig |
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174 | #if defined key_kriest |
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175 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zgrapoc2 |
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176 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + zgrapoc2 * xkr_dmeso |
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177 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + zgraztotf * unass2 |
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178 | #else |
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179 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zgrapoc2 |
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180 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + zgraztotf * unass2 |
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181 | #endif |
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182 | zmortz2 = ztortz2 + zrespz2 |
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183 | tra(ji,jj,jk,jpmes) = tra(ji,jj,jk,jpmes) - zmortz2 + zepsherv * zgraztot |
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184 | tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) - zgrazd |
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185 | tra(ji,jj,jk,jpzoo) = tra(ji,jj,jk,jpzoo) - zgrazz |
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186 | tra(ji,jj,jk,jpphy) = tra(ji,jj,jk,jpphy) - zgrazn |
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187 | tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) - zgrazn * trn(ji,jj,jk,jpnch) / ( trn(ji,jj,jk,jpphy) + rtrn ) |
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188 | tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) - zgrazd * trn(ji,jj,jk,jpdch) / ( trn(ji,jj,jk,jpdia) + rtrn ) |
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189 | tra(ji,jj,jk,jpbsi) = tra(ji,jj,jk,jpbsi) - zgrazd * trn(ji,jj,jk,jpbsi) / ( trn(ji,jj,jk,jpdia) + rtrn ) |
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190 | tra(ji,jj,jk,jpdsi) = tra(ji,jj,jk,jpdsi) + zgrazd * trn(ji,jj,jk,jpbsi) / ( trn(ji,jj,jk,jpdia) + rtrn ) |
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191 | tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) - zgraznf |
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192 | tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) - zgrazf |
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193 | |
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194 | zprcaca = xfracal(ji,jj,jk) * zgrazn |
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195 | ! calcite production |
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196 | #if defined key_diatrc |
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197 | prodcal(ji,jj,jk) = prodcal(ji,jj,jk) + zprcaca ! prodcal=prodcal(nanophy)+prodcal(microzoo)+prodcal(mesozoo) |
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198 | #endif |
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199 | zprcaca = part2 * zprcaca |
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200 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) - zprcaca |
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201 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) - 2. * zprcaca |
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202 | tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) + zprcaca |
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203 | #if defined key_kriest |
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204 | znumpoc = trn(ji,jj,jk,jpnum) / ( trn(ji,jj,jk,jppoc) + rtrn ) |
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205 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zmortz2 - zgrazpoc - zgrazffe |
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206 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) - zgrazpoc * znumpoc & |
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207 | & + zmortz2 * xkr_dmeso - zgrazffe * znumpoc * wsbio4(ji,jj,jk) / ( wsbio3(ji,jj,jk) + rtrn ) |
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208 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + ferat3 * zmortz2 - zgrazfff - zgrazpof |
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209 | #else |
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210 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) - zgrazpoc |
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211 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zmortz2 - zgrazffe |
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212 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) - zgrazpof |
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213 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + ferat3 * zmortz2 - zgrazfff |
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214 | #endif |
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215 | |
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216 | END DO |
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217 | END DO |
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218 | END DO |
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219 | ! |
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220 | #if defined key_diatrc && defined key_iomput |
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221 | zrfact2 = 1.e3 * rfact2r |
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222 | grazing(:,:,:) = grazing(:,:,:) * zrfact2 * tmask(:,:,:) ! Total grazing of phyto by zoo |
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223 | prodcal(:,:,:) = prodcal(:,:,:) * zrfact2 * tmask(:,:,:) ! Calcite production |
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224 | IF( jnt == nrdttrc ) THEN |
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225 | CALL iom_put( "GRAZ" , grazing ) ! Total grazing of phyto by zooplankton |
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226 | CALL iom_put( "PCAL" , prodcal ) ! Calcite production |
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227 | ENDIF |
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228 | #endif |
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229 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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230 | WRITE(charout, FMT="('meso')") |
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231 | CALL prt_ctl_trc_info(charout) |
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232 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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233 | ENDIF |
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234 | |
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235 | END SUBROUTINE p4z_meso |
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236 | |
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237 | SUBROUTINE p4z_meso_init |
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238 | |
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239 | !!---------------------------------------------------------------------- |
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240 | !! *** ROUTINE p4z_meso_init *** |
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241 | !! |
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242 | !! ** Purpose : Initialization of mesozooplankton parameters |
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243 | !! |
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244 | !! ** Method : Read the nampismes namelist and check the parameters |
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245 | !! called at the first timestep (nit000) |
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246 | !! |
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247 | !! ** input : Namelist nampismes |
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248 | !! |
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249 | !!---------------------------------------------------------------------- |
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250 | |
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251 | NAMELIST/nampismes/ part2, grazrat2, resrat2, mzrat2, xprefc, xprefp, xprefz, & |
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252 | & xprefpoc, xthresh2, xkgraz2, epsher2, sigma2, unass2, grazflux |
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253 | |
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254 | REWIND( numnatp ) ! read numnat |
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255 | READ ( numnatp, nampismes ) |
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256 | |
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257 | |
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258 | IF(lwp) THEN ! control print |
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259 | WRITE(numout,*) ' ' |
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260 | WRITE(numout,*) ' Namelist parameters for mesozooplankton, nampismes' |
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261 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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262 | WRITE(numout,*) ' part of calcite not dissolved in mesozoo guts part2 =', part2 |
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263 | WRITE(numout,*) ' mesozoo preference for phyto xprefc =', xprefc |
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264 | WRITE(numout,*) ' mesozoo preference for POC xprefp =', xprefp |
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265 | WRITE(numout,*) ' mesozoo preference for zoo xprefz =', xprefz |
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266 | WRITE(numout,*) ' mesozoo preference for poc xprefpoc =', xprefpoc |
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267 | WRITE(numout,*) ' feeding threshold for mesozooplankton xthresh2 =', xthresh2 |
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268 | WRITE(numout,*) ' exsudation rate of mesozooplankton resrat2 =', resrat2 |
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269 | WRITE(numout,*) ' mesozooplankton mortality rate mzrat2 =', mzrat2 |
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270 | WRITE(numout,*) ' maximal mesozoo grazing rate grazrat2 =', grazrat2 |
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271 | WRITE(numout,*) ' mesozoo flux feeding rate grazflux =', grazflux |
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272 | WRITE(numout,*) ' non assimilated fraction of P by mesozoo unass2 =', unass2 |
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273 | WRITE(numout,*) ' Efficicency of Mesozoo growth epsher2 =', epsher2 |
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274 | WRITE(numout,*) ' Fraction of mesozoo excretion as DOM sigma2 =', sigma2 |
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275 | WRITE(numout,*) ' half sturation constant for grazing 2 xkgraz2 =', xkgraz2 |
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276 | ENDIF |
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277 | |
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278 | |
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279 | END SUBROUTINE p4z_meso_init |
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280 | |
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281 | |
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282 | #else |
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283 | !!====================================================================== |
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284 | !! Dummy module : No PISCES bio-model |
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285 | !!====================================================================== |
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286 | CONTAINS |
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287 | SUBROUTINE p4z_meso ! Empty routine |
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288 | END SUBROUTINE p4z_meso |
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289 | #endif |
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290 | |
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291 | !!====================================================================== |
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292 | END MODULE p4zmeso |
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