| 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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| 18 | USE trc ! |
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| 19 | USE sms_pisces ! |
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| 20 | USE prtctl_trc |
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| 21 | USE p4zint |
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| 22 | USE p4zsink |
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| 23 | USE iom |
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| 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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| 28 | PUBLIC p4z_micro ! called in p4zbio.F90 |
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| 29 | |
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| 30 | !! * Shared module variables |
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| 31 | REAL(wp), PUBLIC :: & |
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| 32 | xpref2c = 0.0_wp , & !: |
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| 33 | xpref2p = 0.5_wp , & !: |
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| 34 | xpref2d = 0.5_wp , & !: |
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| 35 | resrat = 0.03_wp , & !: |
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| 36 | mzrat = 0.0_wp , & !: |
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| 37 | grazrat = 4.0_wp , & !: |
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| 38 | xkgraz = 20E-6_wp , & !: |
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| 39 | unass = 0.3_wp , & !: |
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| 40 | sigma1 = 0.6_wp , & !: |
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| 41 | epsher = 0.33_wp |
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| 42 | |
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| 43 | |
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| 44 | !!* Substitution |
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| 45 | # include "top_substitute.h90" |
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| 46 | !!---------------------------------------------------------------------- |
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| 47 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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| 48 | !! $Id$ |
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| 49 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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| 50 | !!---------------------------------------------------------------------- |
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| 51 | |
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| 52 | CONTAINS |
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| 53 | |
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| 54 | SUBROUTINE p4z_micro( kt,jnt ) |
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| 55 | !!--------------------------------------------------------------------- |
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| 56 | !! *** ROUTINE p4z_micro *** |
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| 57 | !! |
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| 58 | !! ** Purpose : Compute the sources/sinks for microzooplankton |
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| 59 | !! |
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| 60 | !! ** Method : - ??? |
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| 61 | !!--------------------------------------------------------------------- |
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| 62 | INTEGER, INTENT(in) :: kt, jnt ! ocean time step |
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| 63 | INTEGER :: ji, jj, jk |
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| 64 | REAL(wp) :: zcompadi, zcompadi2, zcompaz , zcompaph, zcompapoc |
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| 65 | REAL(wp) :: zgraze , zdenom , zdenom2 |
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| 66 | REAL(wp) :: zfact , zstep , zinano , zidiat, zipoc |
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| 67 | REAL(wp) :: zgrarem, zgrafer, zgrapoc, zprcaca, zmortz |
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| 68 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zrespz,ztortz |
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| 69 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zgrazp, zgrazm, zgrazsd |
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| 70 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zgrazmf, zgrazsf, zgrazpf |
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| 71 | CHARACTER (len=25) :: charout |
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| 72 | #if defined key_trc_diaadd && defined key_trc_dia3d && defined key_iomput |
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| 73 | REAL(wp) :: zrfact2 |
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| 74 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zw3d |
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| 75 | #endif |
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| 76 | |
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| 77 | !!--------------------------------------------------------------------- |
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| 78 | |
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| 79 | IF( ( kt * jnt ) == nittrc000 ) CALL p4z_micro_init ! Initialization (first time-step only) |
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| 80 | |
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| 81 | zrespz (:,:,:) = 0. |
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| 82 | ztortz (:,:,:) = 0. |
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| 83 | zgrazp (:,:,:) = 0. |
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| 84 | zgrazm (:,:,:) = 0. |
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| 85 | zgrazsd(:,:,:) = 0. |
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| 86 | zgrazmf(:,:,:) = 0. |
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| 87 | zgrazsf(:,:,:) = 0. |
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| 88 | zgrazpf(:,:,:) = 0. |
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| 89 | |
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| 90 | |
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| 91 | zstep = rfact2 / rday ! Time step duration for biology |
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| 92 | |
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| 93 | DO jk = 1, jpkm1 |
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| 94 | DO jj = 1, jpj |
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| 95 | DO ji = 1, jpi |
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| 96 | |
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| 97 | zcompaz = MAX( ( trn(ji,jj,jk,jpzoo) - 1.e-9 ), 0.e0 ) |
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| 98 | # if defined key_off_degrad |
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| 99 | zfact = zstep * tgfunc(ji,jj,jk) * zcompaz *facvol(ji,jj,jk) |
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| 100 | # else |
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| 101 | zfact = zstep * tgfunc(ji,jj,jk) * zcompaz |
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| 102 | # endif |
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| 103 | |
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| 104 | ! Respiration rates of both zooplankton |
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| 105 | ! ------------------------------------- |
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| 106 | |
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| 107 | zrespz(ji,jj,jk) = resrat * zfact * ( 1.+ 3.* nitrfac(ji,jj,jk) ) & |
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| 108 | & * trn(ji,jj,jk,jpzoo) / ( xkmort + trn(ji,jj,jk,jpzoo) ) |
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| 109 | |
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| 110 | ! Zooplankton mortality. A square function has been selected with |
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| 111 | ! no real reason except that it seems to be more stable and may |
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| 112 | ! mimic predation. |
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| 113 | ! --------------------------------------------------------------- |
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| 114 | ztortz(ji,jj,jk) = mzrat * 1.e6 * zfact * trn(ji,jj,jk,jpzoo) |
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| 115 | |
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| 116 | END DO |
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| 117 | END DO |
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| 118 | END DO |
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| 119 | |
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| 120 | |
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| 121 | |
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| 122 | DO jk = 1,jpkm1 |
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| 123 | DO jj = 1,jpj |
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| 124 | DO ji = 1,jpi |
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| 125 | zcompadi = MAX( ( trn(ji,jj,jk,jpdia) - 1.e-8 ), 0.e0 ) |
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| 126 | zcompadi2 = MIN( zcompadi, 5.e-7 ) |
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| 127 | zcompaph = MAX( ( trn(ji,jj,jk,jpphy) - 2.e-7 ), 0.e0 ) |
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| 128 | zcompapoc = MAX( ( trn(ji,jj,jk,jppoc) - 1.e-8 ), 0.e0 ) |
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| 129 | |
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| 130 | ! Microzooplankton grazing |
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| 131 | ! ------------------------ |
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| 132 | zdenom2 = 1./ ( xpref2p * zcompaph + xpref2c * zcompapoc + xpref2d * zcompadi2 + rtrn ) |
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| 133 | |
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| 134 | zgraze = grazrat * zstep * tgfunc(ji,jj,jk) & |
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| 135 | # if defined key_off_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,jpzoo) |
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| 139 | |
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| 140 | zinano = xpref2p * zcompaph * zdenom2 |
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| 141 | zipoc = xpref2c * zcompapoc * zdenom2 |
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| 142 | zidiat = xpref2d * zcompadi2 * zdenom2 |
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| 143 | |
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| 144 | zdenom = 1./ ( xkgraz + zinano * zcompaph + zipoc * zcompapoc + zidiat * zcompadi2 ) |
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| 145 | |
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| 146 | zgrazp(ji,jj,jk) = zgraze * zinano * zcompaph * zdenom |
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| 147 | zgrazm(ji,jj,jk) = zgraze * zipoc * zcompapoc * zdenom |
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| 148 | zgrazsd(ji,jj,jk) = zgraze * zidiat * zcompadi2 * zdenom |
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| 149 | |
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| 150 | zgrazpf (ji,jj,jk) = zgrazp(ji,jj,jk) * trn(ji,jj,jk,jpnfe) / (trn(ji,jj,jk,jpphy) + rtrn) |
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| 151 | zgrazmf(ji,jj,jk) = zgrazm(ji,jj,jk) * trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) |
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| 152 | zgrazsf(ji,jj,jk) = zgrazsd(ji,jj,jk) * trn(ji,jj,jk,jpdfe) / (trn(ji,jj,jk,jpdia) + rtrn) |
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| 153 | |
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| 154 | END DO |
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| 155 | END DO |
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| 156 | END DO |
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| 157 | |
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| 158 | |
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| 159 | DO jk = 1,jpkm1 |
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| 160 | DO jj = 1,jpj |
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| 161 | DO ji = 1,jpi |
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| 162 | ! Various remineralization and excretion terms |
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| 163 | ! -------------------------------------------- |
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| 164 | |
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| 165 | zgrarem = ( zgrazp(ji,jj,jk) + zgrazm(ji,jj,jk) + zgrazsd(ji,jj,jk) ) & |
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| 166 | & * ( 1.- epsher - unass ) |
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| 167 | zgrafer = ( zgrazpf(ji,jj,jk) + zgrazsf(ji,jj,jk) + zgrazmf(ji,jj,jk) ) & |
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| 168 | & * ( 1.- epsher - unass ) + epsher * & |
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| 169 | & ( zgrazm(ji,jj,jk) * MAX((trn(ji,jj,jk,jpsfe) /(trn(ji,jj,jk,jppoc)+ rtrn)-ferat3),0.e0) & |
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| 170 | & + zgrazp(ji,jj,jk) * MAX((trn(ji,jj,jk,jpnfe)/(trn(ji,jj,jk,jpphy)+ rtrn)-ferat3),0.e0) & |
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| 171 | & + zgrazsd(ji,jj,jk) * MAX((trn(ji,jj,jk,jpdfe)/(trn(ji,jj,jk,jpdia)+ rtrn)-ferat3),0.e0 ) ) |
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| 172 | zgrapoc = ( zgrazp(ji,jj,jk) + zgrazm(ji,jj,jk) + zgrazsd(ji,jj,jk) ) * unass |
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| 173 | |
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| 174 | ! Update of the TRA arrays |
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| 175 | ! ------------------------ |
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| 176 | |
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| 177 | tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) + zgrarem * sigma1 |
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| 178 | tra(ji,jj,jk,jpnh4) = tra(ji,jj,jk,jpnh4) + zgrarem * sigma1 |
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| 179 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) + zgrarem * (1.-sigma1) |
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| 180 | tra(ji,jj,jk,jpoxy) = tra(ji,jj,jk,jpoxy) - o2ut * zgrarem * sigma1 |
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| 181 | tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + zgrafer |
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| 182 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zgrapoc |
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| 183 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zgrarem * sigma1 |
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| 184 | #if defined key_kriest |
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| 185 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + zgrapoc * xkr_ddiat |
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| 186 | #endif |
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| 187 | END DO |
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| 188 | END DO |
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| 189 | END DO |
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| 190 | |
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| 191 | ! |
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| 192 | ! Update the arrays TRA which contain the biological sources and sinks |
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| 193 | ! -------------------------------------------------------------------- |
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| 194 | |
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| 195 | DO jk = 1, jpkm1 |
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| 196 | DO jj = 1, jpj |
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| 197 | DO ji = 1, jpi |
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| 198 | |
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| 199 | zmortz = ztortz(ji,jj,jk) + zrespz(ji,jj,jk) |
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| 200 | tra(ji,jj,jk,jpzoo) = tra(ji,jj,jk,jpzoo) - zmortz & |
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| 201 | & + epsher * ( zgrazp(ji,jj,jk) + zgrazm(ji,jj,jk) + zgrazsd(ji,jj,jk)) |
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| 202 | tra(ji,jj,jk,jpphy) = tra(ji,jj,jk,jpphy) - zgrazp(ji,jj,jk) |
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| 203 | tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) - zgrazsd(ji,jj,jk) |
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| 204 | tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) - zgrazp(ji,jj,jk) & |
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| 205 | & * trn(ji,jj,jk,jpnch)/(trn(ji,jj,jk,jpphy)+rtrn) |
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| 206 | tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) - zgrazsd(ji,jj,jk) & |
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| 207 | & * trn(ji,jj,jk,jpdch)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 208 | tra(ji,jj,jk,jpbsi) = tra(ji,jj,jk,jpbsi) - zgrazsd(ji,jj,jk) & |
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| 209 | & * trn(ji,jj,jk,jpbsi)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 210 | tra(ji,jj,jk,jpdsi) = tra(ji,jj,jk,jpdsi) + zgrazsd(ji,jj,jk) & |
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| 211 | & * trn(ji,jj,jk,jpbsi)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 212 | tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) - zgrazpf(ji,jj,jk) |
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| 213 | tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) - zgrazsf(ji,jj,jk) |
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| 214 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zmortz - zgrazm(ji,jj,jk) |
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| 215 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + ferat3 * zmortz & |
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| 216 | & + unass * ( zgrazpf(ji,jj,jk) + zgrazsf (ji,jj,jk)) & |
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| 217 | & - (1.-unass) * zgrazmf(ji,jj,jk) |
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| 218 | zprcaca = xfracal(ji,jj,jk) * unass * zgrazp(ji,jj,jk) |
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| 219 | #if defined key_trc_dia3d |
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| 220 | prodcal(ji,jj,jk) = prodcal(ji,jj,jk) + zprcaca ! prodcal=prodcal(nanophy)+prodcal(microzoo)+prodcal(mesozoo) |
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| 221 | #endif |
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| 222 | zprcaca = part * zprcaca |
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| 223 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) - zprcaca |
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| 224 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) - 2. * zprcaca |
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| 225 | tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) + zprcaca |
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| 226 | #if defined key_kriest |
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| 227 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + ( zmortz - zgrazm(ji,jj,jk) ) * xkr_ddiat |
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| 228 | #endif |
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| 229 | END DO |
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| 230 | END DO |
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| 231 | END DO |
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| 232 | ! |
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| 233 | #if defined key_trc_diaadd && defined key_trc_dia3d && defined key_iomput |
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| 234 | zrfact2 = 1.e3 * rfact2r |
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| 235 | zw3d(:,:,:) = ( zgrazp(:,:,:) + zgrazm(:,:,:) + zgrazsd(:,:,:) ) * zrfact2 * tmask(:,:,:) |
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| 236 | IF( jnt == nrdttrc ) CALL iom_put( "Graz" , zw3d ) |
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| 237 | #endif |
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| 238 | |
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| 239 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 240 | WRITE(charout, FMT="('micro')") |
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| 241 | CALL prt_ctl_trc_info(charout) |
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| 242 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 243 | ENDIF |
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| 244 | |
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| 245 | END SUBROUTINE p4z_micro |
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| 246 | |
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| 247 | |
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| 248 | SUBROUTINE p4z_micro_init |
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| 249 | |
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| 250 | !!---------------------------------------------------------------------- |
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| 251 | !! *** ROUTINE p4z_micro_init *** |
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| 252 | !! |
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| 253 | !! ** Purpose : Initialization of microzooplankton parameters |
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| 254 | !! |
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| 255 | !! ** Method : Read the nampiszoo namelist and check the parameters |
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| 256 | !! called at the first timestep (nittrc000) |
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| 257 | !! |
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| 258 | !! ** input : Namelist nampiszoo |
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| 259 | !! |
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| 260 | !!---------------------------------------------------------------------- |
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| 261 | |
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| 262 | NAMELIST/nampiszoo/ grazrat,resrat,mzrat,xpref2c, xpref2p, & |
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| 263 | & xpref2d, xkgraz, epsher, sigma1, unass |
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| 264 | |
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| 265 | REWIND( numnat ) ! read numnat |
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| 266 | READ ( numnat, nampiszoo ) |
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| 267 | |
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| 268 | IF(lwp) THEN ! control print |
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| 269 | WRITE(numout,*) ' ' |
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| 270 | WRITE(numout,*) ' Namelist parameters for microzooplankton, nampiszoo' |
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| 271 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 272 | WRITE(numout,*) ' zoo preference for POC xpref2c =', xpref2c |
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| 273 | WRITE(numout,*) ' zoo preference for nano xpref2p =', xpref2p |
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| 274 | WRITE(numout,*) ' zoo preference for diatoms xpref2d =', xpref2d |
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| 275 | WRITE(numout,*) ' exsudation rate of microzooplankton resrat =', resrat |
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| 276 | WRITE(numout,*) ' microzooplankton mortality rate mzrat =', mzrat |
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| 277 | WRITE(numout,*) ' maximal microzoo grazing rate grazrat =', grazrat |
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| 278 | WRITE(numout,*) ' non assimilated fraction of P by microzoo unass =', unass |
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| 279 | WRITE(numout,*) ' Efficicency of microzoo growth epsher =', epsher |
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| 280 | WRITE(numout,*) ' Fraction of microzoo excretion as DOM sigma1 =', sigma1 |
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| 281 | WRITE(numout,*) ' half sturation constant for grazing 1 xkgraz =', xkgraz |
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| 282 | ENDIF |
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| 283 | |
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| 284 | END SUBROUTINE p4z_micro_init |
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| 285 | |
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| 286 | #else |
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| 287 | !!====================================================================== |
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| 288 | !! Dummy module : No PISCES bio-model |
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| 289 | !!====================================================================== |
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| 290 | CONTAINS |
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| 291 | SUBROUTINE p4z_micro ! Empty routine |
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| 292 | END SUBROUTINE p4z_micro |
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| 293 | #endif |
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| 294 | |
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| 295 | !!====================================================================== |
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| 296 | END MODULE p4zmicro |
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