[935] | 1 | MODULE p4zmicro |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p4zmicro *** |
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| 4 | !! TOP : PISCES Compute the sources/sinks for microzooplankton |
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| 5 | !!====================================================================== |
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| 6 | !! History : 1.0 ! 2004 (O. Aumont) Original code |
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| 7 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
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| 8 | !!---------------------------------------------------------------------- |
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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_micro : Compute the sources/sinks for microzooplankton |
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| 14 | !! p4z_micro_init : Initialize and read the appropriate namelist |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | USE trc |
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| 17 | USE oce_trc ! |
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[1119] | 18 | USE trc ! |
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[1073] | 19 | USE sms_pisces ! |
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[935] | 20 | USE prtctl_trc |
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| 21 | USE p4zint |
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| 22 | USE p4zsink |
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[1678] | 23 | USE iom |
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[935] | 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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[2104] | 28 | PUBLIC p4z_micro ! called in p4zbio.F90 |
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| 29 | PUBLIC p4z_micro_init ! called in trcsms_pisces.F90 |
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[935] | 30 | |
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| 31 | !! * Shared module variables |
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| 32 | REAL(wp), PUBLIC :: & |
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| 33 | xpref2c = 0.0_wp , & !: |
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| 34 | xpref2p = 0.5_wp , & !: |
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| 35 | xpref2d = 0.5_wp , & !: |
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[1073] | 36 | resrat = 0.03_wp , & !: |
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| 37 | mzrat = 0.0_wp , & !: |
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| 38 | grazrat = 4.0_wp , & !: |
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| 39 | xkgraz = 20E-6_wp , & !: |
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| 40 | unass = 0.3_wp , & !: |
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| 41 | sigma1 = 0.6_wp , & !: |
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| 42 | epsher = 0.33_wp |
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[935] | 43 | |
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| 44 | |
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| 45 | !!* Substitution |
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[1953] | 46 | # include "top_substitute.h90" |
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[935] | 47 | !!---------------------------------------------------------------------- |
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| 48 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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[1152] | 49 | !! $Id$ |
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[2237] | 50 | !! Software governed by the CeCILL licence (NEMOGCM/License_CeCILL.txt) |
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[935] | 51 | !!---------------------------------------------------------------------- |
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| 52 | |
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| 53 | CONTAINS |
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| 54 | |
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[2104] | 55 | SUBROUTINE p4z_micro( kt ) |
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[935] | 56 | !!--------------------------------------------------------------------- |
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| 57 | !! *** ROUTINE p4z_micro *** |
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| 58 | !! |
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| 59 | !! ** Purpose : Compute the sources/sinks for microzooplankton |
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| 60 | !! |
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| 61 | !! ** Method : - ??? |
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| 62 | !!--------------------------------------------------------------------- |
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[2104] | 63 | INTEGER, INTENT(in) :: kt ! ocean time step |
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[935] | 64 | INTEGER :: ji, jj, jk |
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| 65 | REAL(wp) :: zcompadi, zcompadi2, zcompaz , zcompaph, zcompapoc |
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[2104] | 66 | REAL(wp) :: zgraze , zdenom , zdenom2, zstep |
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| 67 | REAL(wp) :: zfact , zinano , zidiat, zipoc |
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[935] | 68 | REAL(wp) :: zgrarem, zgrafer, zgrapoc, zprcaca, zmortz |
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[2104] | 69 | REAL(wp) :: zrespz, ztortz |
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| 70 | REAL(wp) :: zgrazp, zgrazm, zgrazsd |
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| 71 | REAL(wp) :: zgrazmf, zgrazsf, zgrazpf |
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[935] | 72 | CHARACTER (len=25) :: charout |
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| 73 | |
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| 74 | !!--------------------------------------------------------------------- |
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| 75 | |
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| 76 | |
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[2038] | 77 | #if defined key_diatrc |
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[1970] | 78 | grazing(:,:,:) = 0. !: Initialisation of grazing |
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| 79 | #endif |
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[935] | 80 | |
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[1736] | 81 | zstep = rfact2 / rday ! Time step duration for biology |
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[1678] | 82 | |
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[935] | 83 | DO jk = 1, jpkm1 |
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| 84 | DO jj = 1, jpj |
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| 85 | DO ji = 1, jpi |
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| 86 | zcompaz = MAX( ( trn(ji,jj,jk,jpzoo) - 1.e-9 ), 0.e0 ) |
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[2038] | 87 | # if defined key_degrad |
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[2104] | 88 | zstep = xstep * facvol(ji,jj,jk) |
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[935] | 89 | # else |
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[2104] | 90 | zstep = xstep |
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| 91 | # endif |
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[935] | 92 | zfact = zstep * tgfunc(ji,jj,jk) * zcompaz |
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| 93 | |
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[2104] | 94 | ! Respiration rates of both zooplankton |
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| 95 | ! ------------------------------------- |
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| 96 | zrespz = resrat * zfact * ( 1.+ 3.* nitrfac(ji,jj,jk) ) & |
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[935] | 97 | & * trn(ji,jj,jk,jpzoo) / ( xkmort + trn(ji,jj,jk,jpzoo) ) |
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| 98 | |
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[2104] | 99 | ! Zooplankton mortality. A square function has been selected with |
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| 100 | ! no real reason except that it seems to be more stable and may mimic predation. |
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| 101 | ! --------------------------------------------------------------- |
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| 102 | ztortz = mzrat * 1.e6 * zfact * trn(ji,jj,jk,jpzoo) |
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[935] | 103 | |
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| 104 | zcompadi = MAX( ( trn(ji,jj,jk,jpdia) - 1.e-8 ), 0.e0 ) |
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| 105 | zcompadi2 = MIN( zcompadi, 5.e-7 ) |
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| 106 | zcompaph = MAX( ( trn(ji,jj,jk,jpphy) - 2.e-7 ), 0.e0 ) |
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| 107 | zcompapoc = MAX( ( trn(ji,jj,jk,jppoc) - 1.e-8 ), 0.e0 ) |
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| 108 | |
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| 109 | ! Microzooplankton grazing |
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| 110 | ! ------------------------ |
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| 111 | zdenom2 = 1./ ( xpref2p * zcompaph + xpref2c * zcompapoc + xpref2d * zcompadi2 + rtrn ) |
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| 112 | |
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[2104] | 113 | zgraze = grazrat * zstep * tgfunc(ji,jj,jk) * trn(ji,jj,jk,jpzoo) |
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[935] | 114 | |
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| 115 | zinano = xpref2p * zcompaph * zdenom2 |
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| 116 | zipoc = xpref2c * zcompapoc * zdenom2 |
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| 117 | zidiat = xpref2d * zcompadi2 * zdenom2 |
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| 118 | |
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| 119 | zdenom = 1./ ( xkgraz + zinano * zcompaph + zipoc * zcompapoc + zidiat * zcompadi2 ) |
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| 120 | |
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[2104] | 121 | zgrazp = zgraze * zinano * zcompaph * zdenom |
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| 122 | zgrazm = zgraze * zipoc * zcompapoc * zdenom |
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| 123 | zgrazsd = zgraze * zidiat * zcompadi2 * zdenom |
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[935] | 124 | |
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[2104] | 125 | zgrazpf = zgrazp * trn(ji,jj,jk,jpnfe) / (trn(ji,jj,jk,jpphy) + rtrn) |
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| 126 | zgrazmf = zgrazm * trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) |
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| 127 | zgrazsf = zgrazsd * trn(ji,jj,jk,jpdfe) / (trn(ji,jj,jk,jpdia) + rtrn) |
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[2038] | 128 | #if defined key_diatrc |
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[2104] | 129 | ! Grazing by microzooplankton |
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| 130 | grazing(ji,jj,jk) = grazing(ji,jj,jk) + zgrazp + zgrazm + zgrazsd |
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[1970] | 131 | #endif |
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[935] | 132 | |
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[2104] | 133 | ! Various remineralization and excretion terms |
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| 134 | ! -------------------------------------------- |
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| 135 | zgrarem = ( zgrazp + zgrazm + zgrazsd ) * ( 1.- epsher - unass ) |
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| 136 | zgrafer = ( zgrazpf + zgrazsf + zgrazmf ) * ( 1.- epsher - unass ) & |
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| 137 | & + epsher * ( zgrazm * MAX((trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc)+ rtrn)-ferat3),0.e0) & |
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| 138 | & + zgrazp * MAX((trn(ji,jj,jk,jpnfe) / (trn(ji,jj,jk,jpphy)+ rtrn)-ferat3),0.e0) & |
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| 139 | & + zgrazsd * MAX((trn(ji,jj,jk,jpdfe) / (trn(ji,jj,jk,jpdia)+ rtrn)-ferat3),0.e0 ) ) |
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[935] | 140 | |
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[2104] | 141 | zgrapoc = ( zgrazp + zgrazm + zgrazsd ) |
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[935] | 142 | |
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| 143 | ! Update of the TRA arrays |
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| 144 | ! ------------------------ |
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| 145 | |
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| 146 | tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) + zgrarem * sigma1 |
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| 147 | tra(ji,jj,jk,jpnh4) = tra(ji,jj,jk,jpnh4) + zgrarem * sigma1 |
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| 148 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) + zgrarem * (1.-sigma1) |
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| 149 | tra(ji,jj,jk,jpoxy) = tra(ji,jj,jk,jpoxy) - o2ut * zgrarem * sigma1 |
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| 150 | tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + zgrafer |
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[2104] | 151 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zgrapoc * unass |
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[935] | 152 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zgrarem * sigma1 |
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| 153 | #if defined key_kriest |
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[2104] | 154 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + zgrapoc * unass * xkr_ddiat |
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[935] | 155 | #endif |
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| 156 | |
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[2104] | 157 | ! |
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| 158 | ! Update the arrays TRA which contain the biological sources and sinks |
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| 159 | ! -------------------------------------------------------------------- |
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[935] | 160 | |
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[2104] | 161 | zmortz = ztortz + zrespz |
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| 162 | tra(ji,jj,jk,jpzoo) = tra(ji,jj,jk,jpzoo) - zmortz + epsher * zgrapoc |
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| 163 | tra(ji,jj,jk,jpphy) = tra(ji,jj,jk,jpphy) - zgrazp |
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| 164 | tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) - zgrazsd |
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| 165 | tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) - zgrazp * trn(ji,jj,jk,jpnch)/(trn(ji,jj,jk,jpphy)+rtrn) |
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| 166 | tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) - zgrazsd * trn(ji,jj,jk,jpdch)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 167 | tra(ji,jj,jk,jpbsi) = tra(ji,jj,jk,jpbsi) - zgrazsd * trn(ji,jj,jk,jpbsi)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 168 | tra(ji,jj,jk,jpdsi) = tra(ji,jj,jk,jpdsi) + zgrazsd * trn(ji,jj,jk,jpbsi)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 169 | tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) - zgrazpf |
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| 170 | tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) - zgrazsf |
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| 171 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zmortz - zgrazm |
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| 172 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + ferat3 * zmortz + unass * ( zgrazpf + zgrazsf ) - (1.-unass) * zgrazmf |
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| 173 | zprcaca = xfracal(ji,jj,jk) * unass * zgrazp |
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[2038] | 174 | #if defined key_diatrc |
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[1678] | 175 | prodcal(ji,jj,jk) = prodcal(ji,jj,jk) + zprcaca ! prodcal=prodcal(nanophy)+prodcal(microzoo)+prodcal(mesozoo) |
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| 176 | #endif |
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| 177 | zprcaca = part * zprcaca |
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[935] | 178 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) - zprcaca |
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[1678] | 179 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) - 2. * zprcaca |
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[935] | 180 | tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) + zprcaca |
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| 181 | #if defined key_kriest |
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[2104] | 182 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + ( zmortz - zgrazm ) * xkr_ddiat |
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[935] | 183 | #endif |
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| 184 | END DO |
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| 185 | END DO |
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| 186 | END DO |
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| 187 | ! |
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[1970] | 188 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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[935] | 189 | WRITE(charout, FMT="('micro')") |
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| 190 | CALL prt_ctl_trc_info(charout) |
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| 191 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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[1970] | 192 | ENDIF |
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[935] | 193 | |
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| 194 | END SUBROUTINE p4z_micro |
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| 195 | |
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| 196 | |
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| 197 | SUBROUTINE p4z_micro_init |
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| 198 | |
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| 199 | !!---------------------------------------------------------------------- |
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| 200 | !! *** ROUTINE p4z_micro_init *** |
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| 201 | !! |
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| 202 | !! ** Purpose : Initialization of microzooplankton parameters |
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| 203 | !! |
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[1119] | 204 | !! ** Method : Read the nampiszoo namelist and check the parameters |
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[2104] | 205 | !! called at the first timestep (nit000) |
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[935] | 206 | !! |
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[1119] | 207 | !! ** input : Namelist nampiszoo |
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[935] | 208 | !! |
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| 209 | !!---------------------------------------------------------------------- |
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| 210 | |
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[1119] | 211 | NAMELIST/nampiszoo/ grazrat,resrat,mzrat,xpref2c, xpref2p, & |
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[935] | 212 | & xpref2d, xkgraz, epsher, sigma1, unass |
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| 213 | |
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| 214 | REWIND( numnat ) ! read numnat |
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[1119] | 215 | READ ( numnat, nampiszoo ) |
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[935] | 216 | |
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| 217 | IF(lwp) THEN ! control print |
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| 218 | WRITE(numout,*) ' ' |
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[1119] | 219 | WRITE(numout,*) ' Namelist parameters for microzooplankton, nampiszoo' |
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[935] | 220 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 221 | WRITE(numout,*) ' zoo preference for POC xpref2c =', xpref2c |
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| 222 | WRITE(numout,*) ' zoo preference for nano xpref2p =', xpref2p |
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| 223 | WRITE(numout,*) ' zoo preference for diatoms xpref2d =', xpref2d |
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| 224 | WRITE(numout,*) ' exsudation rate of microzooplankton resrat =', resrat |
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| 225 | WRITE(numout,*) ' microzooplankton mortality rate mzrat =', mzrat |
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| 226 | WRITE(numout,*) ' maximal microzoo grazing rate grazrat =', grazrat |
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| 227 | WRITE(numout,*) ' non assimilated fraction of P by microzoo unass =', unass |
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| 228 | WRITE(numout,*) ' Efficicency of microzoo growth epsher =', epsher |
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| 229 | WRITE(numout,*) ' Fraction of microzoo excretion as DOM sigma1 =', sigma1 |
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| 230 | WRITE(numout,*) ' half sturation constant for grazing 1 xkgraz =', xkgraz |
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| 231 | ENDIF |
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| 232 | |
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| 233 | END SUBROUTINE p4z_micro_init |
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| 234 | |
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| 235 | #else |
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| 236 | !!====================================================================== |
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| 237 | !! Dummy module : No PISCES bio-model |
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| 238 | !!====================================================================== |
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| 239 | CONTAINS |
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| 240 | SUBROUTINE p4z_micro ! Empty routine |
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| 241 | END SUBROUTINE p4z_micro |
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| 242 | #endif |
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| 243 | |
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| 244 | !!====================================================================== |
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| 245 | END MODULE p4zmicro |
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