1 | MODULE zooplankton_mod |
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2 | !!====================================================================== |
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3 | !! *** MODULE zooplankton_mod *** |
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4 | !! Calculates the zooplankton grazing |
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5 | !!====================================================================== |
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6 | !! History : |
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7 | !! - ! 2017-04 (M. Stringer) Code taken from trcbio_medusa.F90 |
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8 | !!---------------------------------------------------------------------- |
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9 | #if defined key_medusa |
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10 | !!---------------------------------------------------------------------- |
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11 | !! MEDUSA bio-model |
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12 | !!---------------------------------------------------------------------- |
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13 | |
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14 | IMPLICIT NONE |
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15 | PRIVATE |
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16 | |
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17 | PUBLIC zooplankton ! Called in plankton.F90 |
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18 | |
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19 | !!---------------------------------------------------------------------- |
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20 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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21 | !! $Id$ |
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22 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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23 | !!---------------------------------------------------------------------- |
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24 | |
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25 | CONTAINS |
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26 | |
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27 | SUBROUTINE zooplankton( jk ) |
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28 | !!------------------------------------------------------------------ |
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29 | !! *** ROUTINE zooplankton *** |
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30 | !! This called from PLANKTON and calculates the zooplankton |
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31 | !! grazing |
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32 | !!------------------------------------------------------------------ |
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33 | USE bio_medusa_mod, ONLY: fgmed, fgmedc, fgmepd, fgmepds, & |
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34 | fgmepn, fgmezmi, & |
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35 | fgmid, fgmidc, fgmipn, & |
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36 | ficme, ficmi, finme, finmi, & |
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37 | fmeexcr, fmegrow, fmeresp, & |
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38 | fmiexcr, fmigrow, fmiresp, & |
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39 | fsin, & |
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40 | fzme_i, fzme_o, fzmi_i, fzmi_o, & |
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41 | idf, idfval, & |
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42 | zdet, zdtc, zphd, zphn, zzme, zzmi |
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43 | USE dom_oce, ONLY: e3t_0, e3t_n, tmask |
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44 | USE par_kind, ONLY: wp |
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45 | USE in_out_manager, ONLY: lwp, numout |
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46 | USE par_oce, ONLY: jpim1, jpjm1 |
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47 | USE phycst, ONLY: rsmall |
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48 | USE sms_medusa, ONLY: xbetac, xbetan, xgme, xgmi, & |
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49 | xkc, xkme, xkmi, xphi, & |
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50 | xpmed, xpmepd, xpmepn, xpmezmi, & |
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51 | xpmid, xpmipn, & |
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52 | xthetapd, xthetapn, & |
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53 | xthetazme, xthetazmi |
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54 | |
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55 | !!* Substitution |
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56 | # include "domzgr_substitute.h90" |
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57 | |
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58 | !! Level |
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59 | INTEGER, INTENT( in ) :: jk |
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60 | |
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61 | INTEGER :: ji, jj |
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62 | |
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63 | !! Microzooplankton grazing |
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64 | REAL(wp) :: fmi1, fmi |
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65 | REAL(wp) :: fstarmi, fmith |
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66 | !! |
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67 | !! Mesozooplankton grazing |
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68 | REAL(wp) :: fme1, fme |
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69 | REAL(wp) :: fstarme, fmeth |
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70 | |
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71 | DO jj = 2,jpjm1 |
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72 | DO ji = 2,jpim1 |
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73 | !! OPEN wet point IF..THEN loop |
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74 | if (tmask(ji,jj,jk) == 1) then |
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75 | |
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76 | !!---------------------------------------------------------- |
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77 | !! Zooplankton Grazing |
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78 | !! this code supplements the base grazing model with one that |
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79 | !! considers the C:N ratio of grazed food and balances this |
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80 | !! against the requirements of zooplankton growth; this model |
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81 | !! is derived from that of Anderson & Pondaven (2003) |
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82 | !! |
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83 | !! The current version of the code assumes a fixed C:N ratio |
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84 | !! for detritus (in contrast to Anderson & Pondaven, 2003), |
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85 | !! though the full equations are retained for future extension |
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86 | !!---------------------------------------------------------- |
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87 | !! |
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88 | !!---------------------------------------------------------- |
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89 | !! Microzooplankton first |
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90 | !!---------------------------------------------------------- |
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91 | !! |
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92 | fmi1 = (xkmi * xkmi) + (xpmipn * zphn(ji,jj) * & |
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93 | zphn(ji,jj)) + & |
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94 | (xpmid * zdet(ji,jj) * zdet(ji,jj)) |
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95 | fmi = xgmi * zzmi(ji,jj) / fmi1 |
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96 | !! grazing on non-diatoms |
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97 | fgmipn(ji,jj) = fmi * xpmipn * zphn(ji,jj) * zphn(ji,jj) |
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98 | !! grazing on detrital nitrogen |
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99 | fgmid(ji,jj) = fmi * xpmid * zdet(ji,jj) * zdet(ji,jj) |
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100 | # if defined key_roam |
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101 | ! acc |
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102 | fgmidc(ji,jj) = rsmall |
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103 | !! grazing on detrital carbon |
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104 | IF ( zdet(ji,jj) .GT. rsmall ) fgmidc(ji,jj) = & |
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105 | (zdtc(ji,jj) / (zdet(ji,jj) + tiny(zdet(ji,jj)))) * & |
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106 | fgmid(ji,jj) |
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107 | # else |
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108 | !! AXY (26/11/08): implicit detrital carbon change |
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109 | !! grazing on detrital carbon |
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110 | fgmidc(ji,jj) = xthetad * fgmid(ji,jj) |
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111 | # endif |
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112 | # if defined key_debug_medusa |
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113 | !! report microzooplankton grazing |
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114 | if (idf.eq.1.AND.idfval.eq.1) then |
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115 | IF (lwp) write (numout,*) '------------------------------' |
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116 | IF (lwp) write (numout,*) 'fmi1(',jk,') = ', fmi1 |
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117 | endif |
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118 | # endif |
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119 | ENDIF |
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120 | ENDDO |
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121 | ENDDO |
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122 | |
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123 | DO jj = 2,jpjm1 |
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124 | DO ji = 2,jpim1 |
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125 | if (tmask(ji,jj,jk) == 1) then |
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126 | !! |
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127 | !! which translates to these incoming N and C fluxes |
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128 | finmi(ji,jj) = (1.0 - xphi) * (fgmipn(ji,jj) + fgmid(ji,jj)) |
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129 | ficmi(ji,jj) = (1.0 - xphi) * ((xthetapn * fgmipn(ji,jj)) + & |
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130 | fgmidc(ji,jj)) |
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131 | !! |
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132 | !! the ideal food C:N ratio for microzooplankton |
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133 | !! xbetan = 0.77; xthetaz = 5.625; xbetac = 0.64; xkc = 0.80 |
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134 | fstarmi = (xbetan * xthetazmi) / (xbetac * xkc) |
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135 | !! |
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136 | !! process these to determine proportioning of grazed N and C |
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137 | !! (since there is no explicit consideration of respiration, |
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138 | !! only growth and excretion are calculated here) |
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139 | fmith = (ficmi(ji,jj) / (finmi(ji,jj) + tiny(finmi(ji,jj)))) |
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140 | if (fmith.ge.fstarmi) then |
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141 | fmigrow(ji,jj) = xbetan * finmi(ji,jj) |
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142 | fmiexcr(ji,jj) = 0.0 |
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143 | else |
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144 | fmigrow(ji,jj) = (xbetac * xkc * ficmi(ji,jj)) / xthetazmi |
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145 | fmiexcr(ji,jj) = ficmi(ji,jj) * & |
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146 | ((xbetan / (fmith + tiny(fmith))) - & |
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147 | ((xbetac * xkc) / xthetazmi)) |
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148 | endif |
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149 | # if defined key_roam |
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150 | fmiresp(ji,jj) = (xbetac * ficmi(ji,jj)) - & |
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151 | (xthetazmi * fmigrow(ji,jj)) |
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152 | # endif |
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153 | |
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154 | # if defined key_debug_medusa |
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155 | !! report microzooplankton grazing |
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156 | if (idf.eq.1.AND.idfval.eq.1) then |
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157 | IF (lwp) write (numout,*) '------------------------------' |
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158 | IF (lwp) write (numout,*) 'fgmipn(',jk,') = ', fgmipn(ji,jj) |
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159 | IF (lwp) write (numout,*) 'fgmid(',jk,') = ', fgmid(ji,jj) |
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160 | IF (lwp) write (numout,*) 'fgmidc(',jk,') = ', fgmidc(ji,jj) |
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161 | IF (lwp) write (numout,*) 'finmi(',jk,') = ', finmi(ji,jj) |
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162 | IF (lwp) write (numout,*) 'ficmi(',jk,') = ', ficmi(ji,jj) |
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163 | IF (lwp) write (numout,*) 'fstarmi(',jk,') = ', fstarmi |
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164 | IF (lwp) write (numout,*) 'fmith(',jk,') = ', fmith |
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165 | IF (lwp) write (numout,*) 'fmigrow(',jk,') = ', fmigrow(ji,jj) |
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166 | IF (lwp) write (numout,*) 'fmiexcr(',jk,') = ', fmiexcr(ji,jj) |
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167 | # if defined key_roam |
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168 | IF (lwp) write (numout,*) 'fmiresp(',jk,') = ', fmiresp(ji,jj) |
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169 | # endif |
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170 | endif |
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171 | # endif |
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172 | ENDIF |
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173 | ENDDO |
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174 | ENDDO |
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175 | |
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176 | DO jj = 2,jpjm1 |
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177 | DO ji = 2,jpim1 |
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178 | if (tmask(ji,jj,jk) == 1) then |
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179 | !!---------------------------------------------------------- |
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180 | !! Mesozooplankton second |
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181 | !!---------------------------------------------------------- |
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182 | !! |
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183 | fme1 = (xkme * xkme) + (xpmepn * zphn(ji,jj) * & |
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184 | zphn(ji,jj)) + & |
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185 | (xpmepd * zphd(ji,jj) * zphd(ji,jj)) + & |
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186 | (xpmezmi * zzmi(ji,jj) * zzmi(ji,jj)) + & |
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187 | (xpmed * zdet(ji,jj) * zdet(ji,jj)) |
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188 | fme = xgme * zzme(ji,jj) / fme1 |
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189 | !! grazing on non-diatoms |
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190 | fgmepn(ji,jj) = fme * xpmepn * zphn(ji,jj) * zphn(ji,jj) |
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191 | !! grazing on diatoms |
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192 | fgmepd(ji,jj) = fme * xpmepd * zphd(ji,jj) * zphd(ji,jj) |
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193 | !! grazing on diatom silicon |
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194 | fgmepds(ji,jj) = fsin(ji,jj) * fgmepd(ji,jj) |
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195 | !! grazing on microzooplankton |
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196 | fgmezmi(ji,jj) = fme * xpmezmi * zzmi(ji,jj) * zzmi(ji,jj) |
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197 | !! grazing on detrital nitrogen |
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198 | fgmed(ji,jj) = fme * xpmed * zdet(ji,jj) * zdet(ji,jj) |
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199 | # if defined key_roam |
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200 | !! acc |
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201 | fgmedc(ji,jj) = rsmall |
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202 | !! grazing on detrital carbon |
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203 | IF ( zdet(ji,jj) .GT. rsmall ) fgmedc(ji,jj) = (zdtc(ji,jj) / & |
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204 | (zdet(ji,jj) + tiny(zdet(ji,jj)))) * fgmed(ji,jj) |
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205 | # else |
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206 | !! AXY (26/11/08): implicit detrital carbon change |
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207 | !! grazing on detrital carbon |
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208 | fgmedc(ji,jj) = xthetad * fgmed(ji,jj) |
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209 | # endif |
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210 | !! |
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211 | !! which translates to these incoming N and C fluxes |
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212 | finme(ji,jj) = (1.0 - xphi) * & |
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213 | (fgmepn(ji,jj) + fgmepd(ji,jj) + & |
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214 | fgmezmi(ji,jj) + fgmed(ji,jj)) |
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215 | ficme(ji,jj) = (1.0 - xphi) * & |
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216 | ((xthetapn * fgmepn(ji,jj)) + & |
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217 | (xthetapd * fgmepd(ji,jj)) + & |
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218 | (xthetazmi * fgmezmi(ji,jj)) + fgmedc(ji,jj)) |
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219 | # if defined key_debug_medusa |
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220 | !! report mesozooplankton grazing |
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221 | if (idf.eq.1.AND.idfval.eq.1) then |
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222 | IF (lwp) write (numout,*) '------------------------------' |
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223 | IF (lwp) write (numout,*) 'fme1(',jk,') = ', fme1 |
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224 | IF (lwp) write (numout,*) 'fme(',jk,') = ', fme |
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225 | endif |
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226 | # endif |
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227 | ENDIF |
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228 | ENDDO |
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229 | ENDDO |
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230 | |
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231 | DO jj = 2,jpjm1 |
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232 | DO ji = 2,jpim1 |
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233 | if (tmask(ji,jj,jk) == 1) then |
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234 | !! |
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235 | !! the ideal food C:N ratio for mesozooplankton |
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236 | !! xbetan = 0.77; xthetaz = 5.625; xbetac = 0.64; xkc = 0.80 |
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237 | fstarme = (xbetan * xthetazme) / (xbetac * xkc) |
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238 | !! |
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239 | !! process these to determine proportioning of grazed N and C |
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240 | !! (since there is no explicit consideration of respiration, |
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241 | !! only growth and excretion are calculated here) |
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242 | fmeth = (ficme(ji,jj) / (finme(ji,jj) + tiny(finme(ji,jj)))) |
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243 | if (fmeth.ge.fstarme) then |
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244 | fmegrow(ji,jj) = xbetan * finme(ji,jj) |
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245 | fmeexcr(ji,jj) = 0.0 |
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246 | else |
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247 | fmegrow(ji,jj) = (xbetac * xkc * ficme(ji,jj)) / xthetazme |
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248 | fmeexcr(ji,jj) = ficme(ji,jj) * & |
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249 | ((xbetan / (fmeth + tiny(fmeth))) - & |
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250 | ((xbetac * xkc) / xthetazme)) |
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251 | endif |
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252 | # if defined key_roam |
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253 | fmeresp(ji,jj) = (xbetac * ficme(ji,jj)) - (xthetazme * & |
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254 | fmegrow(ji,jj)) |
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255 | # endif |
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256 | |
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257 | # if defined key_debug_medusa |
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258 | !! report mesozooplankton grazing |
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259 | if (idf.eq.1.AND.idfval.eq.1) then |
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260 | IF (lwp) write (numout,*) '------------------------------' |
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261 | IF (lwp) write (numout,*) 'fgmepn(',jk,') = ', fgmepn(ji,jj) |
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262 | IF (lwp) write (numout,*) 'fgmepd(',jk,') = ', fgmepd(ji,jj) |
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263 | IF (lwp) write (numout,*) 'fgmepds(',jk,') = ', fgmepds(ji,jj) |
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264 | IF (lwp) write (numout,*) 'fgmezmi(',jk,') = ', fgmezmi(ji,jj) |
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265 | IF (lwp) write (numout,*) 'fgmed(',jk,') = ', fgmed(ji,jj) |
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266 | IF (lwp) write (numout,*) 'fgmedc(',jk,') = ', fgmedc(ji,jj) |
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267 | IF (lwp) write (numout,*) 'finme(',jk,') = ', finme(ji,jj) |
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268 | IF (lwp) write (numout,*) 'ficme(',jk,') = ', ficme(ji,jj) |
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269 | IF (lwp) write (numout,*) 'fstarme(',jk,') = ', fstarme |
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270 | IF (lwp) write (numout,*) 'fmeth(',jk,') = ', fmeth |
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271 | IF (lwp) write (numout,*) 'fmegrow(',jk,') = ', fmegrow(ji,jj) |
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272 | IF (lwp) write (numout,*) 'fmeexcr(',jk,') = ', fmeexcr(ji,jj) |
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273 | # if defined key_roam |
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274 | IF (lwp) write (numout,*) 'fmeresp(',jk,') = ', fmeresp(ji,jj) |
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275 | # endif |
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276 | endif |
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277 | # endif |
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278 | ENDIF |
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279 | ENDDO |
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280 | ENDDO |
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281 | |
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282 | DO jj = 2,jpjm1 |
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283 | DO ji = 2,jpim1 |
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284 | if (tmask(ji,jj,jk) == 1) then |
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285 | fzmi_i(ji,jj) = fzmi_i(ji,jj) + fse3t(ji,jj,jk) * & |
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286 | ( fgmipn(ji,jj) + fgmid(ji,jj) ) |
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287 | fzmi_o(ji,jj) = fzmi_o(ji,jj) + fse3t(ji,jj,jk) * & |
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288 | ( fmigrow(ji,jj) + & |
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289 | (xphi * (fgmipn(ji,jj) + fgmid(ji,jj))) + & |
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290 | fmiexcr(ji,jj) + ((1.0 - xbetan) * & |
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291 | finmi(ji,jj)) ) |
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292 | fzme_i(ji,jj) = fzme_i(ji,jj) + fse3t(ji,jj,jk) * & |
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293 | ( fgmepn(ji,jj) + fgmepd(ji,jj) + & |
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294 | fgmezmi(ji,jj) + fgmed(ji,jj) ) |
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295 | fzme_o(ji,jj) = fzme_o(ji,jj) + fse3t(ji,jj,jk) * & |
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296 | ( fmegrow(ji,jj) + & |
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297 | (xphi * (fgmepn(ji,jj) + fgmepd(ji,jj) + & |
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298 | fgmezmi(ji,jj) + fgmed(ji,jj))) + & |
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299 | fmeexcr(ji,jj) + ((1.0 - xbetan) * & |
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300 | finme(ji,jj)) ) |
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301 | ENDIF |
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302 | ENDDO |
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303 | ENDDO |
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304 | |
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305 | END SUBROUTINE zooplankton |
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306 | |
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307 | #else |
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308 | !!====================================================================== |
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309 | !! Dummy module : No MEDUSA bio-model |
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310 | !!====================================================================== |
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311 | CONTAINS |
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312 | SUBROUTINE zooplankton( ) ! Empty routine |
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313 | WRITE(*,*) 'zooplankton: You should not have seen this print! error?' |
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314 | END SUBROUTINE zooplankton |
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315 | #endif |
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316 | |
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317 | !!====================================================================== |
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318 | END MODULE zooplankton_mod |
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