[3443] | 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 | !! 3.4 ! 2011-06 (O. Aumont, C. Ethe) Quota model for iron |
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| 9 | !!---------------------------------------------------------------------- |
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[9169] | 10 | !! p4z_micro : Compute the sources/sinks for microzooplankton |
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| 11 | !! p4z_micro_init : Initialize and read the appropriate namelist |
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[3443] | 12 | !!---------------------------------------------------------------------- |
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[9169] | 13 | USE oce_trc ! shared variables between ocean and passive tracers |
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| 14 | USE trc ! passive tracers common variables |
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| 15 | USE sms_pisces ! PISCES Source Minus Sink variables |
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[10227] | 16 | USE p4zlim ! Co-limitations |
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[9169] | 17 | USE p4zprod ! production |
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| 18 | USE iom ! I/O manager |
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| 19 | USE prtctl_trc ! print control for debugging |
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[3443] | 20 | |
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| 21 | IMPLICIT NONE |
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| 22 | PRIVATE |
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| 23 | |
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| 24 | PUBLIC p4z_micro ! called in p4zbio.F90 |
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| 25 | PUBLIC p4z_micro_init ! called in trcsms_pisces.F90 |
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| 26 | |
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[9169] | 27 | REAL(wp), PUBLIC :: part !: part of calcite not dissolved in microzoo guts |
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[10362] | 28 | REAL(wp), PUBLIC :: xprefc !: microzoo preference for POC |
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| 29 | REAL(wp), PUBLIC :: xprefn !: microzoo preference for nanophyto |
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| 30 | REAL(wp), PUBLIC :: xprefd !: microzoo preference for diatoms |
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[9169] | 31 | REAL(wp), PUBLIC :: xthreshdia !: diatoms feeding threshold for microzooplankton |
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| 32 | REAL(wp), PUBLIC :: xthreshphy !: nanophyto threshold for microzooplankton |
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| 33 | REAL(wp), PUBLIC :: xthreshpoc !: poc threshold for microzooplankton |
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| 34 | REAL(wp), PUBLIC :: xthresh !: feeding threshold for microzooplankton |
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| 35 | REAL(wp), PUBLIC :: resrat !: exsudation rate of microzooplankton |
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| 36 | REAL(wp), PUBLIC :: mzrat !: microzooplankton mortality rate |
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| 37 | REAL(wp), PUBLIC :: grazrat !: maximal microzoo grazing rate |
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[10362] | 38 | REAL(wp), PUBLIC :: xkgraz !: Half-saturation constant of assimilation |
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| 39 | REAL(wp), PUBLIC :: unass !: Non-assimilated part of food |
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[9169] | 40 | REAL(wp), PUBLIC :: sigma1 !: Fraction of microzoo excretion as DOM |
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[10362] | 41 | REAL(wp), PUBLIC :: epsher !: growth efficiency for grazing 1 |
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| 42 | REAL(wp), PUBLIC :: epshermin !: minimum growth efficiency for grazing 1 |
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[3443] | 43 | |
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[12377] | 44 | !! * Substitutions |
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| 45 | # include "do_loop_substitute.h90" |
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[3443] | 46 | !!---------------------------------------------------------------------- |
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[10067] | 47 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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[10069] | 48 | !! $Id$ |
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[10068] | 49 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3443] | 50 | !!---------------------------------------------------------------------- |
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| 51 | CONTAINS |
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| 52 | |
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[12377] | 53 | SUBROUTINE p4z_micro( kt, knt, Kbb, Krhs ) |
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[3443] | 54 | !!--------------------------------------------------------------------- |
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| 55 | !! *** ROUTINE p4z_micro *** |
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| 56 | !! |
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| 57 | !! ** Purpose : Compute the sources/sinks for microzooplankton |
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| 58 | !! |
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| 59 | !! ** Method : - ??? |
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| 60 | !!--------------------------------------------------------------------- |
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[9169] | 61 | INTEGER, INTENT(in) :: kt ! ocean time step |
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| 62 | INTEGER, INTENT(in) :: knt ! ??? |
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[12377] | 63 | INTEGER, INTENT(in) :: Kbb, Krhs ! time level indices |
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[3446] | 64 | ! |
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[3443] | 65 | INTEGER :: ji, jj, jk |
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| 66 | REAL(wp) :: zcompadi, zcompaz , zcompaph, zcompapoc |
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[4529] | 67 | REAL(wp) :: zgraze , zdenom, zdenom2 |
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[10362] | 68 | REAL(wp) :: zfact , zfood, zfoodlim, zbeta |
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[13189] | 69 | REAL(wp) :: zepsherf, zepshert, zepsherv, zepsherq |
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| 70 | REAL(wp) :: zgrarsig, zgraztotc, zgraztotn, zgraztotf |
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[3443] | 71 | REAL(wp) :: zgrarem, zgrafer, zgrapoc, zprcaca, zmortz |
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[4529] | 72 | REAL(wp) :: zrespz, ztortz, zgrasrat, zgrasratn |
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[3443] | 73 | REAL(wp) :: zgrazp, zgrazm, zgrazsd |
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| 74 | REAL(wp) :: zgrazmf, zgrazsf, zgrazpf |
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[12232] | 75 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zgrazing, zfezoo, zzligprod |
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[3443] | 76 | CHARACTER (len=25) :: charout |
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| 77 | !!--------------------------------------------------------------------- |
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| 78 | ! |
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[9124] | 79 | IF( ln_timing ) CALL timing_start('p4z_micro') |
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[3443] | 80 | ! |
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[12377] | 81 | DO_3D_11_11( 1, jpkm1 ) |
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| 82 | zcompaz = MAX( ( tr(ji,jj,jk,jpzoo,Kbb) - 1.e-9 ), 0.e0 ) |
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| 83 | zfact = xstep * tgfunc2(ji,jj,jk) * zcompaz |
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[3443] | 84 | |
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[12377] | 85 | ! Respiration rates of both zooplankton |
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| 86 | ! ------------------------------------- |
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| 87 | zrespz = resrat * zfact * tr(ji,jj,jk,jpzoo,Kbb) / ( xkmort + tr(ji,jj,jk,jpzoo,Kbb) ) & |
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| 88 | & + resrat * zfact * 3. * nitrfac(ji,jj,jk) |
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[3443] | 89 | |
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[12377] | 90 | ! Zooplankton mortality. A square function has been selected with |
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| 91 | ! no real reason except that it seems to be more stable and may mimic predation. |
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| 92 | ! --------------------------------------------------------------- |
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| 93 | ztortz = mzrat * 1.e6 * zfact * tr(ji,jj,jk,jpzoo,Kbb) * (1. - nitrfac(ji,jj,jk)) |
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[3443] | 94 | |
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[12377] | 95 | zcompadi = MIN( MAX( ( tr(ji,jj,jk,jpdia,Kbb) - xthreshdia ), 0.e0 ), xsizedia ) |
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| 96 | zcompaph = MAX( ( tr(ji,jj,jk,jpphy,Kbb) - xthreshphy ), 0.e0 ) |
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| 97 | zcompapoc = MAX( ( tr(ji,jj,jk,jppoc,Kbb) - xthreshpoc ), 0.e0 ) |
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| 98 | |
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| 99 | ! Microzooplankton grazing |
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| 100 | ! ------------------------ |
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| 101 | zfood = xprefn * zcompaph + xprefc * zcompapoc + xprefd * zcompadi |
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| 102 | zfoodlim = MAX( 0. , zfood - min(xthresh,0.5*zfood) ) |
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| 103 | zdenom = zfoodlim / ( xkgraz + zfoodlim ) |
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| 104 | zdenom2 = zdenom / ( zfood + rtrn ) |
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| 105 | zgraze = grazrat * xstep * tgfunc2(ji,jj,jk) * tr(ji,jj,jk,jpzoo,Kbb) * (1. - nitrfac(ji,jj,jk)) |
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[3443] | 106 | |
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[12377] | 107 | zgrazp = zgraze * xprefn * zcompaph * zdenom2 |
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| 108 | zgrazm = zgraze * xprefc * zcompapoc * zdenom2 |
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| 109 | zgrazsd = zgraze * xprefd * zcompadi * zdenom2 |
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[3443] | 110 | |
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[12377] | 111 | zgrazpf = zgrazp * tr(ji,jj,jk,jpnfe,Kbb) / (tr(ji,jj,jk,jpphy,Kbb) + rtrn) |
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| 112 | zgrazmf = zgrazm * tr(ji,jj,jk,jpsfe,Kbb) / (tr(ji,jj,jk,jppoc,Kbb) + rtrn) |
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| 113 | zgrazsf = zgrazsd * tr(ji,jj,jk,jpdfe,Kbb) / (tr(ji,jj,jk,jpdia,Kbb) + rtrn) |
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| 114 | ! |
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| 115 | zgraztotc = zgrazp + zgrazm + zgrazsd |
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| 116 | zgraztotf = zgrazpf + zgrazsf + zgrazmf |
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| 117 | zgraztotn = zgrazp * quotan(ji,jj,jk) + zgrazm + zgrazsd * quotad(ji,jj,jk) |
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[3443] | 118 | |
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[12377] | 119 | ! Grazing by microzooplankton |
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| 120 | zgrazing(ji,jj,jk) = zgraztotc |
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[3443] | 121 | |
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[13189] | 122 | |
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| 123 | ! Microzooplankton efficiency. |
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| 124 | ! We adopt a formulation proposed by Mitra et al. (2007) |
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| 125 | ! The gross growth efficiency is controled by the most limiting nutrient. |
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| 126 | ! Growth is also further decreased when the food quality is poor. This is currently |
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| 127 | ! hard coded : it can be decreased by up to 50% (zepsherq) |
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| 128 | ! GGE can also be decreased when food quantity is high, zepsherf (Montagnes and |
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| 129 | ! Fulton, 2012) |
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| 130 | ! ----------------------------------------------------------------------------- |
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[12377] | 131 | zgrasrat = ( zgraztotf + rtrn ) / ( zgraztotc + rtrn ) |
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| 132 | zgrasratn = ( zgraztotn + rtrn ) / ( zgraztotc + rtrn ) |
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| 133 | zepshert = MIN( 1., zgrasratn, zgrasrat / ferat3) |
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| 134 | zbeta = MAX(0., (epsher - epshermin) ) |
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| 135 | zepsherf = epshermin + zbeta / ( 1.0 + 0.04E6 * 12. * zfood * zbeta ) |
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[13189] | 136 | zepsherq = 0.5 + (1.0 - 0.5) * zepshert * ( 1.0 + 1.0 ) / ( zepshert + 1.0 ) |
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| 137 | zepsherv = zepsherf * zepshert * zepsherq |
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[3443] | 138 | |
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[12377] | 139 | zgrafer = zgraztotc * MAX( 0. , ( 1. - unass ) * zgrasrat - ferat3 * zepsherv ) |
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| 140 | zgrarem = zgraztotc * ( 1. - zepsherv - unass ) |
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| 141 | zgrapoc = zgraztotc * unass |
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[10362] | 142 | |
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[12377] | 143 | ! Update of the TRA arrays |
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| 144 | ! ------------------------ |
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| 145 | zgrarsig = zgrarem * sigma1 |
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| 146 | tr(ji,jj,jk,jppo4,Krhs) = tr(ji,jj,jk,jppo4,Krhs) + zgrarsig |
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| 147 | tr(ji,jj,jk,jpnh4,Krhs) = tr(ji,jj,jk,jpnh4,Krhs) + zgrarsig |
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| 148 | tr(ji,jj,jk,jpdoc,Krhs) = tr(ji,jj,jk,jpdoc,Krhs) + zgrarem - zgrarsig |
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| 149 | ! |
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| 150 | IF( ln_ligand ) THEN |
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| 151 | tr(ji,jj,jk,jplgw,Krhs) = tr(ji,jj,jk,jplgw,Krhs) + (zgrarem - zgrarsig) * ldocz |
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| 152 | zzligprod(ji,jj,jk) = (zgrarem - zgrarsig) * ldocz |
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| 153 | ENDIF |
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| 154 | ! |
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| 155 | tr(ji,jj,jk,jpoxy,Krhs) = tr(ji,jj,jk,jpoxy,Krhs) - o2ut * zgrarsig |
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| 156 | tr(ji,jj,jk,jpfer,Krhs) = tr(ji,jj,jk,jpfer,Krhs) + zgrafer |
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| 157 | zfezoo(ji,jj,jk) = zgrafer |
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| 158 | tr(ji,jj,jk,jppoc,Krhs) = tr(ji,jj,jk,jppoc,Krhs) + zgrapoc |
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| 159 | prodpoc(ji,jj,jk) = prodpoc(ji,jj,jk) + zgrapoc |
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| 160 | tr(ji,jj,jk,jpsfe,Krhs) = tr(ji,jj,jk,jpsfe,Krhs) + zgraztotf * unass |
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| 161 | tr(ji,jj,jk,jpdic,Krhs) = tr(ji,jj,jk,jpdic,Krhs) + zgrarsig |
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| 162 | tr(ji,jj,jk,jptal,Krhs) = tr(ji,jj,jk,jptal,Krhs) + rno3 * zgrarsig |
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| 163 | ! Update the arrays TRA which contain the biological sources and sinks |
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| 164 | ! -------------------------------------------------------------------- |
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| 165 | zmortz = ztortz + zrespz |
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| 166 | tr(ji,jj,jk,jpzoo,Krhs) = tr(ji,jj,jk,jpzoo,Krhs) - zmortz + zepsherv * zgraztotc |
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| 167 | tr(ji,jj,jk,jpphy,Krhs) = tr(ji,jj,jk,jpphy,Krhs) - zgrazp |
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| 168 | tr(ji,jj,jk,jpdia,Krhs) = tr(ji,jj,jk,jpdia,Krhs) - zgrazsd |
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| 169 | tr(ji,jj,jk,jpnch,Krhs) = tr(ji,jj,jk,jpnch,Krhs) - zgrazp * tr(ji,jj,jk,jpnch,Kbb)/(tr(ji,jj,jk,jpphy,Kbb)+rtrn) |
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| 170 | tr(ji,jj,jk,jpdch,Krhs) = tr(ji,jj,jk,jpdch,Krhs) - zgrazsd * tr(ji,jj,jk,jpdch,Kbb)/(tr(ji,jj,jk,jpdia,Kbb)+rtrn) |
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| 171 | tr(ji,jj,jk,jpdsi,Krhs) = tr(ji,jj,jk,jpdsi,Krhs) - zgrazsd * tr(ji,jj,jk,jpdsi,Kbb)/(tr(ji,jj,jk,jpdia,Kbb)+rtrn) |
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| 172 | tr(ji,jj,jk,jpgsi,Krhs) = tr(ji,jj,jk,jpgsi,Krhs) + zgrazsd * tr(ji,jj,jk,jpdsi,Kbb)/(tr(ji,jj,jk,jpdia,Kbb)+rtrn) |
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| 173 | tr(ji,jj,jk,jpnfe,Krhs) = tr(ji,jj,jk,jpnfe,Krhs) - zgrazpf |
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| 174 | tr(ji,jj,jk,jpdfe,Krhs) = tr(ji,jj,jk,jpdfe,Krhs) - zgrazsf |
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| 175 | tr(ji,jj,jk,jppoc,Krhs) = tr(ji,jj,jk,jppoc,Krhs) + zmortz - zgrazm |
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| 176 | prodpoc(ji,jj,jk) = prodpoc(ji,jj,jk) + zmortz |
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| 177 | conspoc(ji,jj,jk) = conspoc(ji,jj,jk) - zgrazm |
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| 178 | tr(ji,jj,jk,jpsfe,Krhs) = tr(ji,jj,jk,jpsfe,Krhs) + ferat3 * zmortz - zgrazmf |
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| 179 | ! |
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| 180 | ! calcite production |
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| 181 | zprcaca = xfracal(ji,jj,jk) * zgrazp |
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| 182 | prodcal(ji,jj,jk) = prodcal(ji,jj,jk) + zprcaca ! prodcal=prodcal(nanophy)+prodcal(microzoo)+prodcal(mesozoo) |
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| 183 | ! |
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| 184 | zprcaca = part * zprcaca |
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| 185 | tr(ji,jj,jk,jpdic,Krhs) = tr(ji,jj,jk,jpdic,Krhs) - zprcaca |
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| 186 | tr(ji,jj,jk,jptal,Krhs) = tr(ji,jj,jk,jptal,Krhs) - 2. * zprcaca |
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| 187 | tr(ji,jj,jk,jpcal,Krhs) = tr(ji,jj,jk,jpcal,Krhs) + zprcaca |
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| 188 | END_3D |
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[3443] | 189 | ! |
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[12232] | 190 | IF( lk_iomput .AND. knt == nrdttrc ) THEN |
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[12377] | 191 | IF( iom_use("GRAZ1") ) THEN ! Total grazing of phyto by zooplankton |
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[12276] | 192 | zgrazing(:,:,jpk) = 0._wp ; CALL iom_put( "GRAZ1" , zgrazing(:,:,:) * 1.e+3 * rfact2r * tmask(:,:,:) ) |
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[4996] | 193 | ENDIF |
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[12276] | 194 | IF( iom_use("FEZOO") ) THEN |
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[12377] | 195 | zfezoo (:,:,jpk) = 0._wp ; CALL iom_put( "FEZOO", zfezoo(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:) ) |
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[12276] | 196 | ENDIF |
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| 197 | IF( ln_ligand ) THEN |
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| 198 | zzligprod(:,:,jpk) = 0._wp ; CALL iom_put( "LPRODZ", zzligprod(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:)) |
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| 199 | ENDIF |
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[3446] | 200 | ENDIF |
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| 201 | ! |
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[12377] | 202 | IF(sn_cfctl%l_prttrc) THEN ! print mean trends (used for debugging) |
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[3443] | 203 | WRITE(charout, FMT="('micro')") |
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| 204 | CALL prt_ctl_trc_info(charout) |
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[12377] | 205 | CALL prt_ctl_trc(tab4d=tr(:,:,:,:,Krhs), mask=tmask, clinfo=ctrcnm) |
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[3443] | 206 | ENDIF |
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| 207 | ! |
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[9124] | 208 | IF( ln_timing ) CALL timing_stop('p4z_micro') |
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[3443] | 209 | ! |
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| 210 | END SUBROUTINE p4z_micro |
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| 211 | |
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| 212 | |
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| 213 | SUBROUTINE p4z_micro_init |
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| 214 | !!---------------------------------------------------------------------- |
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| 215 | !! *** ROUTINE p4z_micro_init *** |
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| 216 | !! |
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| 217 | !! ** Purpose : Initialization of microzooplankton parameters |
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| 218 | !! |
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| 219 | !! ** Method : Read the nampiszoo namelist and check the parameters |
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| 220 | !! called at the first timestep (nittrc000) |
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| 221 | !! |
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| 222 | !! ** input : Namelist nampiszoo |
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| 223 | !! |
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| 224 | !!---------------------------------------------------------------------- |
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[9124] | 225 | INTEGER :: ios ! Local integer |
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| 226 | ! |
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[10362] | 227 | NAMELIST/namp4zzoo/ part, grazrat, resrat, mzrat, xprefn, xprefc, & |
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| 228 | & xprefd, xthreshdia, xthreshphy, xthreshpoc, & |
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| 229 | & xthresh, xkgraz, epsher, epshermin, sigma1, unass |
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[9124] | 230 | !!---------------------------------------------------------------------- |
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| 231 | ! |
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[9169] | 232 | IF(lwp) THEN |
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| 233 | WRITE(numout,*) |
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| 234 | WRITE(numout,*) 'p4z_micro_init : Initialization of microzooplankton parameters' |
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| 235 | WRITE(numout,*) '~~~~~~~~~~~~~~' |
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| 236 | ENDIF |
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| 237 | ! |
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[7646] | 238 | READ ( numnatp_ref, namp4zzoo, IOSTAT = ios, ERR = 901) |
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[11536] | 239 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namp4zzoo in reference namelist' ) |
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[7646] | 240 | READ ( numnatp_cfg, namp4zzoo, IOSTAT = ios, ERR = 902 ) |
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[11536] | 241 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namp4zzoo in configuration namelist' ) |
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[9169] | 242 | IF(lwm) WRITE( numonp, namp4zzoo ) |
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[9124] | 243 | ! |
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[3443] | 244 | IF(lwp) THEN ! control print |
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[9169] | 245 | WRITE(numout,*) ' Namelist : namp4zzoo' |
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| 246 | WRITE(numout,*) ' part of calcite not dissolved in microzoo guts part =', part |
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[10362] | 247 | WRITE(numout,*) ' microzoo preference for POC xprefc =', xprefc |
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| 248 | WRITE(numout,*) ' microzoo preference for nano xprefn =', xprefn |
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| 249 | WRITE(numout,*) ' microzoo preference for diatoms xprefd =', xprefd |
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[9169] | 250 | WRITE(numout,*) ' diatoms feeding threshold for microzoo xthreshdia =', xthreshdia |
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| 251 | WRITE(numout,*) ' nanophyto feeding threshold for microzoo xthreshphy =', xthreshphy |
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| 252 | WRITE(numout,*) ' poc feeding threshold for microzoo xthreshpoc =', xthreshpoc |
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| 253 | WRITE(numout,*) ' feeding threshold for microzooplankton xthresh =', xthresh |
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| 254 | WRITE(numout,*) ' exsudation rate of microzooplankton resrat =', resrat |
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| 255 | WRITE(numout,*) ' microzooplankton mortality rate mzrat =', mzrat |
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| 256 | WRITE(numout,*) ' maximal microzoo grazing rate grazrat =', grazrat |
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| 257 | WRITE(numout,*) ' non assimilated fraction of P by microzoo unass =', unass |
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| 258 | WRITE(numout,*) ' Efficicency of microzoo growth epsher =', epsher |
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[10362] | 259 | WRITE(numout,*) ' Minimum efficicency of microzoo growth epshermin =', epshermin |
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[9169] | 260 | WRITE(numout,*) ' Fraction of microzoo excretion as DOM sigma1 =', sigma1 |
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| 261 | WRITE(numout,*) ' half sturation constant for grazing 1 xkgraz =', xkgraz |
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[3443] | 262 | ENDIF |
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[9124] | 263 | ! |
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[3443] | 264 | END SUBROUTINE p4z_micro_init |
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| 265 | |
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| 266 | !!====================================================================== |
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[5656] | 267 | END MODULE p4zmicro |
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