[7975] | 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 | fme, fme1, fmeexcr, fmegrow, & |
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| 38 | fmeresp, fmeth, & |
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| 39 | fmi, fmi1, fmiexcr, fmigrow, & |
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| 40 | fmiresp, fmith, & |
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| 41 | fsin, fstarme, fstarmi, & |
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| 42 | fzme_i, fzme_o, fzmi_i, fzmi_o, & |
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| 43 | idf, idfval, & |
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| 44 | zdet, zdtc, zphd, zphn, zzme, zzmi |
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| 45 | USE dom_oce, ONLY: e3t_0, e3t_n, tmask |
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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 | DO jj = 2,jpjm1 |
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| 64 | DO ji = 2,jpim1 |
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| 65 | !! OPEN wet point IF..THEN loop |
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| 66 | if (tmask(ji,jj,jk) == 1) then |
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| 67 | |
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| 68 | !!---------------------------------------------------------- |
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| 69 | !! Zooplankton Grazing |
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| 70 | !! this code supplements the base grazing model with one that |
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| 71 | !! considers the C:N ratio of grazed food and balances this |
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| 72 | !! against the requirements of zooplankton growth; this model |
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| 73 | !! is derived from that of Anderson & Pondaven (2003) |
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| 74 | !! |
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| 75 | !! The current version of the code assumes a fixed C:N ratio |
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| 76 | !! for detritus (in contrast to Anderson & Pondaven, 2003), |
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| 77 | !! though the full equations are retained for future extension |
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| 78 | !!---------------------------------------------------------- |
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| 79 | !! |
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| 80 | !!---------------------------------------------------------- |
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| 81 | !! Microzooplankton first |
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| 82 | !!---------------------------------------------------------- |
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| 83 | !! |
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| 84 | fmi1(ji,jj) = (xkmi * xkmi) + (xpmipn * zphn(ji,jj) * & |
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| 85 | zphn(ji,jj)) + & |
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| 86 | (xpmid * zdet(ji,jj) * zdet(ji,jj)) |
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| 87 | fmi(ji,jj) = xgmi * zzmi(ji,jj) / fmi1(ji,jj) |
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| 88 | !! grazing on non-diatoms |
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| 89 | fgmipn(ji,jj) = fmi(ji,jj) * xpmipn * zphn(ji,jj) * & |
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| 90 | zphn(ji,jj) |
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| 91 | !! grazing on detrital nitrogen |
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| 92 | fgmid(ji,jj) = fmi(ji,jj) * xpmid * zdet(ji,jj) * & |
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| 93 | zdet(ji,jj) |
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| 94 | # if defined key_roam |
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| 95 | ! acc |
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| 96 | fgmidc(ji,jj) = rsmall |
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| 97 | !! grazing on detrital carbon |
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| 98 | IF ( zdet(ji,jj) .GT. rsmall ) fgmidc(ji,jj) = & |
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| 99 | (zdtc(ji,jj) / (zdet(ji,jj) + tiny(zdet(ji,jj)))) * & |
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| 100 | fgmid(ji,jj) |
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| 101 | # else |
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| 102 | !! AXY (26/11/08): implicit detrital carbon change |
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| 103 | !! grazing on detrital carbon |
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| 104 | fgmidc(ji,jj) = xthetad * fgmid(ji,jj) |
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| 105 | # endif |
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| 106 | ENDIF |
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| 107 | ENDDO |
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| 108 | ENDDO |
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| 109 | |
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| 110 | DO jj = 2,jpjm1 |
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| 111 | DO ji = 2,jpim1 |
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| 112 | if (tmask(ji,jj,1) == 1) then |
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| 113 | !! |
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| 114 | !! which translates to these incoming N and C fluxes |
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| 115 | finmi(ji,jj) = (1.0 - xphi) * (fgmipn(ji,jj) + fgmid(ji,jj)) |
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| 116 | ficmi(ji,jj) = (1.0 - xphi) * ((xthetapn * fgmipn(ji,jj)) + & |
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| 117 | fgmidc(ji,jj)) |
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| 118 | !! |
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| 119 | !! the ideal food C:N ratio for microzooplankton |
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| 120 | !! xbetan = 0.77; xthetaz = 5.625; xbetac = 0.64; xkc = 0.80 |
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| 121 | fstarmi(ji,jj) = (xbetan * xthetazmi) / (xbetac * xkc) |
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| 122 | !! |
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| 123 | !! process these to determine proportioning of grazed N and C |
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| 124 | !! (since there is no explicit consideration of respiration, |
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| 125 | !! only growth and excretion are calculated here) |
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| 126 | fmith(ji,jj) = (ficmi(ji,jj) / (finmi(ji,jj) + & |
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| 127 | tiny(finmi(ji,jj)))) |
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| 128 | if (fmith(ji,jj).ge.fstarmi(ji,jj)) then |
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| 129 | fmigrow(ji,jj) = xbetan * finmi(ji,jj) |
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| 130 | fmiexcr(ji,jj) = 0.0 |
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| 131 | else |
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| 132 | fmigrow(ji,jj) = (xbetac * xkc * ficmi(ji,jj)) / xthetazmi |
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| 133 | fmiexcr(ji,jj) = ficmi(ji,jj) * & |
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| 134 | ((xbetan / (fmith(ji,jj) + & |
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| 135 | tiny(fmith(ji,jj)))) - & |
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| 136 | ((xbetac * xkc) / xthetazmi)) |
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| 137 | endif |
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| 138 | # if defined key_roam |
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| 139 | fmiresp(ji,jj) = (xbetac * ficmi(ji,jj)) - & |
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| 140 | (xthetazmi * fmigrow(ji,jj)) |
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| 141 | # endif |
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| 142 | |
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| 143 | # if defined key_debug_medusa |
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| 144 | !! report microzooplankton grazing |
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| 145 | if (idf.eq.1.AND.idfval.eq.1) then |
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| 146 | IF (lwp) write (numout,*) '------------------------------' |
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| 147 | IF (lwp) write (numout,*) 'fmi1(',jk,') = ', fmi1(ji,jj) |
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| 148 | IF (lwp) write (numout,*) 'fmi(',jk,') = ', fmi(ji,jj) |
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| 149 | IF (lwp) write (numout,*) 'fgmipn(',jk,') = ', fgmipn(ji,jj) |
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| 150 | IF (lwp) write (numout,*) 'fgmid(',jk,') = ', fgmid(ji,jj) |
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| 151 | IF (lwp) write (numout,*) 'fgmidc(',jk,') = ', fgmidc(ji,jj) |
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| 152 | IF (lwp) write (numout,*) 'finmi(',jk,') = ', finmi(ji,jj) |
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| 153 | IF (lwp) write (numout,*) 'ficmi(',jk,') = ', ficmi(ji,jj) |
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| 154 | IF (lwp) write (numout,*) 'fstarmi(',jk,') = ', fstarmi(ji,jj) |
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| 155 | IF (lwp) write (numout,*) 'fmith(',jk,') = ', fmith(ji,jj) |
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| 156 | IF (lwp) write (numout,*) 'fmigrow(',jk,') = ', fmigrow(ji,jj) |
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| 157 | IF (lwp) write (numout,*) 'fmiexcr(',jk,') = ', fmiexcr(ji,jj) |
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| 158 | # if defined key_roam |
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| 159 | IF (lwp) write (numout,*) 'fmiresp(',jk,') = ', fmiresp(ji,jj) |
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| 160 | # endif |
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| 161 | endif |
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| 162 | # endif |
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| 163 | ENDIF |
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| 164 | ENDDO |
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| 165 | ENDDO |
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| 166 | |
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| 167 | DO jj = 2,jpjm1 |
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| 168 | DO ji = 2,jpim1 |
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| 169 | if (tmask(ji,jj,1) == 1) then |
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| 170 | !!---------------------------------------------------------- |
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| 171 | !! Mesozooplankton second |
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| 172 | !!---------------------------------------------------------- |
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| 173 | !! |
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| 174 | fme1(ji,jj) = (xkme * xkme) + (xpmepn * zphn(ji,jj) * & |
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| 175 | zphn(ji,jj)) + & |
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| 176 | (xpmepd * zphd(ji,jj) * zphd(ji,jj)) + & |
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| 177 | (xpmezmi * zzmi(ji,jj) * zzmi(ji,jj)) + & |
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| 178 | (xpmed * zdet(ji,jj) * zdet(ji,jj)) |
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| 179 | fme(ji,jj) = xgme * zzme(ji,jj) / fme1(ji,jj) |
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| 180 | !! grazing on non-diatoms |
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| 181 | fgmepn(ji,jj) = fme(ji,jj) * xpmepn * zphn(ji,jj) * & |
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| 182 | zphn(ji,jj) |
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| 183 | !! grazing on diatoms |
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| 184 | fgmepd(ji,jj) = fme(ji,jj) * xpmepd * zphd(ji,jj) * & |
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| 185 | zphd(ji,jj) |
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| 186 | !! grazing on diatom silicon |
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| 187 | fgmepds(ji,jj) = fsin(ji,jj) * fgmepd(ji,jj) |
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| 188 | !! grazing on microzooplankton |
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| 189 | fgmezmi(ji,jj) = fme(ji,jj) * xpmezmi * zzmi(ji,jj) * & |
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| 190 | zzmi(ji,jj) |
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| 191 | !! grazing on detrital nitrogen |
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| 192 | fgmed(ji,jj) = fme(ji,jj) * xpmed * zdet(ji,jj) * & |
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| 193 | zdet(ji,jj) |
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| 194 | # if defined key_roam |
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| 195 | !! acc |
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| 196 | fgmedc(ji,jj) = rsmall |
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| 197 | !! grazing on detrital carbon |
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| 198 | IF ( zdet(ji,jj) .GT. rsmall ) fgmedc(ji,jj) = (zdtc(ji,jj) / & |
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| 199 | (zdet(ji,jj) + tiny(zdet(ji,jj)))) * fgmed(ji,jj) |
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| 200 | # else |
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| 201 | !! AXY (26/11/08): implicit detrital carbon change |
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| 202 | !! grazing on detrital carbon |
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| 203 | fgmedc(ji,jj) = xthetad * fgmed(ji,jj) |
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| 204 | # endif |
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| 205 | !! |
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| 206 | !! which translates to these incoming N and C fluxes |
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| 207 | finme(ji,jj) = (1.0 - xphi) * & |
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| 208 | (fgmepn(ji,jj) + fgmepd(ji,jj) + & |
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| 209 | fgmezmi(ji,jj) + fgmed(ji,jj)) |
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| 210 | ficme(ji,jj) = (1.0 - xphi) * & |
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| 211 | ((xthetapn * fgmepn(ji,jj)) + & |
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| 212 | (xthetapd * fgmepd(ji,jj)) + & |
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| 213 | (xthetazmi * fgmezmi(ji,jj)) + fgmedc(ji,jj)) |
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| 214 | ENDIF |
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| 215 | ENDDO |
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| 216 | ENDDO |
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| 217 | |
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| 218 | DO jj = 2,jpjm1 |
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| 219 | DO ji = 2,jpim1 |
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| 220 | if (tmask(ji,jj,1) == 1) then |
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| 221 | !! |
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| 222 | !! the ideal food C:N ratio for mesozooplankton |
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| 223 | !! xbetan = 0.77; xthetaz = 5.625; xbetac = 0.64; xkc = 0.80 |
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| 224 | fstarme(ji,jj) = (xbetan * xthetazme) / (xbetac * xkc) |
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| 225 | !! |
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| 226 | !! process these to determine proportioning of grazed N and C |
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| 227 | !! (since there is no explicit consideration of respiration, |
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| 228 | !! only growth and excretion are calculated here) |
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| 229 | fmeth(ji,jj) = (ficme(ji,jj) / (finme(ji,jj) + & |
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| 230 | tiny(finme(ji,jj)))) |
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| 231 | if (fmeth(ji,jj).ge.fstarme(ji,jj)) then |
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| 232 | fmegrow(ji,jj) = xbetan * finme(ji,jj) |
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| 233 | fmeexcr(ji,jj) = 0.0 |
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| 234 | else |
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| 235 | fmegrow(ji,jj) = (xbetac * xkc * ficme(ji,jj)) / xthetazme |
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| 236 | fmeexcr(ji,jj) = ficme(ji,jj) * & |
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| 237 | ((xbetan / (fmeth(ji,jj) + & |
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| 238 | tiny(fmeth(ji,jj)))) - & |
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| 239 | ((xbetac * xkc) / xthetazme)) |
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| 240 | endif |
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| 241 | # if defined key_roam |
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| 242 | fmeresp(ji,jj) = (xbetac * ficme(ji,jj)) - (xthetazme * & |
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| 243 | fmegrow(ji,jj)) |
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| 244 | # endif |
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| 245 | |
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| 246 | # if defined key_debug_medusa |
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| 247 | !! report mesozooplankton grazing |
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| 248 | if (idf.eq.1.AND.idfval.eq.1) then |
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| 249 | IF (lwp) write (numout,*) '------------------------------' |
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| 250 | IF (lwp) write (numout,*) 'fme1(',jk,') = ', fme1(ji,jj) |
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| 251 | IF (lwp) write (numout,*) 'fme(',jk,') = ', fme(ji,jj) |
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| 252 | IF (lwp) write (numout,*) 'fgmepn(',jk,') = ', fgmepn(ji,jj) |
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| 253 | IF (lwp) write (numout,*) 'fgmepd(',jk,') = ', fgmepd(ji,jj) |
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| 254 | IF (lwp) write (numout,*) 'fgmepds(',jk,') = ', fgmepds(ji,jj) |
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| 255 | IF (lwp) write (numout,*) 'fgmezmi(',jk,') = ', fgmezmi(ji,jj) |
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| 256 | IF (lwp) write (numout,*) 'fgmed(',jk,') = ', fgmed(ji,jj) |
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| 257 | IF (lwp) write (numout,*) 'fgmedc(',jk,') = ', fgmedc(ji,jj) |
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| 258 | IF (lwp) write (numout,*) 'finme(',jk,') = ', finme(ji,jj) |
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| 259 | IF (lwp) write (numout,*) 'ficme(',jk,') = ', ficme(ji,jj) |
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| 260 | IF (lwp) write (numout,*) 'fstarme(',jk,') = ', fstarme(ji,jj) |
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| 261 | IF (lwp) write (numout,*) 'fmeth(',jk,') = ', fmeth(ji,jj) |
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| 262 | IF (lwp) write (numout,*) 'fmegrow(',jk,') = ', fmegrow(ji,jj) |
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| 263 | IF (lwp) write (numout,*) 'fmeexcr(',jk,') = ', fmeexcr(ji,jj) |
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| 264 | # if defined key_roam |
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| 265 | IF (lwp) write (numout,*) 'fmeresp(',jk,') = ', fmeresp(ji,jj) |
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| 266 | # endif |
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| 267 | endif |
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| 268 | # endif |
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| 269 | ENDIF |
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| 270 | ENDDO |
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| 271 | ENDDO |
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| 272 | |
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| 273 | DO jj = 2,jpjm1 |
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| 274 | DO ji = 2,jpim1 |
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| 275 | if (tmask(ji,jj,1) == 1) then |
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| 276 | fzmi_i(ji,jj) = fzmi_i(ji,jj) + fse3t(ji,jj,jk) * & |
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| 277 | ( fgmipn(ji,jj) + fgmid(ji,jj) ) |
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| 278 | fzmi_o(ji,jj) = fzmi_o(ji,jj) + fse3t(ji,jj,jk) * & |
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| 279 | ( fmigrow(ji,jj) + & |
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| 280 | (xphi * (fgmipn(ji,jj) + fgmid(ji,jj))) + & |
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| 281 | fmiexcr(ji,jj) + ((1.0 - xbetan) * & |
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| 282 | finmi(ji,jj)) ) |
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| 283 | fzme_i(ji,jj) = fzme_i(ji,jj) + fse3t(ji,jj,jk) * & |
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| 284 | ( fgmepn(ji,jj) + fgmepd(ji,jj) + & |
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| 285 | fgmezmi(ji,jj) + fgmed(ji,jj) ) |
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| 286 | fzme_o(ji,jj) = fzme_o(ji,jj) + fse3t(ji,jj,jk) * & |
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| 287 | ( fmegrow(ji,jj) + & |
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| 288 | (xphi * (fgmepn(ji,jj) + fgmepd(ji,jj) + & |
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| 289 | fgmezmi(ji,jj) + fgmed(ji,jj))) + & |
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| 290 | fmeexcr(ji,jj) + ((1.0 - xbetan) * & |
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| 291 | finme(ji,jj)) ) |
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| 292 | |
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| 293 | ENDIF |
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| 294 | ENDDO |
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| 295 | ENDDO |
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| 296 | |
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| 297 | END SUBROUTINE zooplankton |
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| 298 | |
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| 299 | #else |
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| 300 | !!====================================================================== |
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| 301 | !! Dummy module : No MEDUSA bio-model |
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| 302 | !!====================================================================== |
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| 303 | CONTAINS |
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| 304 | SUBROUTINE zooplankton( ) ! Empty routine |
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| 305 | WRITE(*,*) 'zooplankton: You should not have seen this print! error?' |
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| 306 | END SUBROUTINE zooplankton |
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| 307 | #endif |
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| 308 | |
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| 309 | !!====================================================================== |
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| 310 | END MODULE zooplankton_mod |
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