| [935] | 1 | MODULE p4zmort |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p4zmort *** |
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| 4 | !! TOP : PISCES Compute the mortality terms for phytoplankton |
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| 5 | !!====================================================================== |
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| 6 | !! History : 1.0 ! 2002 (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_mort : Compute the mortality terms for phytoplankton |
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| 14 | !! p4z_mort_init : Initialize the mortality params for phytoplankton |
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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 trp_trc ! |
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| 19 | USE sms ! |
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| 20 | USE p4zsink |
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| 21 | USE prtctl_trc |
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| 22 | |
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| 23 | IMPLICIT NONE |
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| 24 | PRIVATE |
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| 25 | |
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| 26 | PUBLIC p4z_mort ! called in p4zbio.F90 |
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| 27 | |
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| 28 | |
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| 29 | !! * Shared module variables |
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| 30 | REAL(wp), PUBLIC :: wchl = 0.001_wp , & !: |
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| 31 | & wchld = 0.02_wp , & !: |
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| 32 | & mprat = 0.01_wp , & !: |
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| 33 | & mprat2 = 0.01_wp , & !: |
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| 34 | & mpratm = 0.01_wp !: |
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| 35 | |
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| 36 | !! * Module variables |
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| 37 | REAL(wp) :: zstep |
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| 38 | |
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| 39 | |
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| 40 | |
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| 41 | !!* Substitution |
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| 42 | # include "domzgr_substitute.h90" |
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| 43 | !!---------------------------------------------------------------------- |
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| 44 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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| 45 | !! $Header:$ |
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| 46 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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| 47 | !!---------------------------------------------------------------------- |
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| 48 | |
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| 49 | CONTAINS |
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| 50 | |
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| 51 | SUBROUTINE p4z_mort( kt, jnt ) |
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| 52 | !!--------------------------------------------------------------------- |
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| 53 | !! *** ROUTINE p4z_mort *** |
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| 54 | !! |
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| 55 | !! ** Purpose : Calls the different subroutine to initialize and compute |
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| 56 | !! the different phytoplankton mortality terms |
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| 57 | !! |
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| 58 | !! ** Method : - ??? |
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| 59 | !!--------------------------------------------------------------------- |
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| 60 | INTEGER, INTENT(in) :: kt, jnt ! ocean time step |
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| 61 | !!--------------------------------------------------------------------- |
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| 62 | |
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| 63 | IF( ( kt * jnt ) == nittrc000 ) CALL p4z_mort_init ! Initialization (first time-step only) |
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| 64 | |
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| 65 | zstep = rfact2 / rjjss ! Time step duration for biology |
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| 66 | |
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| 67 | CALL p4z_nano ! nanophytoplankton |
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| 68 | |
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| 69 | CALL p4z_diat ! diatoms |
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| 70 | |
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| 71 | END SUBROUTINE p4z_mort |
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| 72 | |
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| 73 | |
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| 74 | SUBROUTINE p4z_nano |
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| 75 | !!--------------------------------------------------------------------- |
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| 76 | !! *** ROUTINE p4z_nano *** |
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| 77 | !! |
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| 78 | !! ** Purpose : Compute the mortality terms for nanophytoplankton |
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| 79 | !! |
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| 80 | !! ** Method : - ??? |
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| 81 | !!--------------------------------------------------------------------- |
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| 82 | INTEGER :: ji, jj, jk |
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| 83 | REAL(wp) :: zcompaph |
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| 84 | REAL(wp) :: zfactfe,zfactch,zprcaca,zfracal |
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| 85 | REAL(wp) :: ztortp,zrespp,zmortp |
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| 86 | CHARACTER (len=25) :: charout |
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| 87 | !!--------------------------------------------------------------------- |
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| 88 | |
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| 89 | |
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| 90 | DO jk = 1, jpkm1 |
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| 91 | DO jj = 1, jpj |
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| 92 | DO ji = 1, jpi |
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| 93 | |
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| 94 | zcompaph = MAX( ( trn(ji,jj,jk,jpphy) - 1e-8 ), 0.e0 ) |
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| 95 | |
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| 96 | ! Squared mortality of Phyto similar to a sedimentation term during |
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| 97 | ! blooms (Doney et al. 1996) |
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| 98 | ! ----------------------------------------------------------------- |
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| 99 | zrespp = wchl * 1.e6 * zstep * xdiss(ji,jj,jk) & |
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| 100 | # if defined key_off_degrad |
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| 101 | & * facvol(ji,jj,jk) & |
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| 102 | # endif |
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| 103 | & * zcompaph * trn(ji,jj,jk,jpphy) |
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| 104 | |
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| 105 | ! Phytoplankton mortality. This mortality loss is slightly |
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| 106 | ! increased when nutrients are limiting phytoplankton growth |
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| 107 | ! as observed for instance in case of iron limitation. |
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| 108 | ! ---------------------------------------------------------- |
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| 109 | ztortp = mprat * zstep * trn(ji,jj,jk,jpphy) & |
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| 110 | # if defined key_off_degrad |
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| 111 | & * facvol(ji,jj,jk) & |
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| 112 | # endif |
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| 113 | & / ( xkmort + trn(ji,jj,jk,jpphy) ) * zcompaph |
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| 114 | |
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| 115 | |
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| 116 | zmortp = zrespp + ztortp |
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| 117 | |
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| 118 | ! Update the arrays TRA which contains the biological sources and sinks |
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| 119 | |
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| 120 | zfactfe = trn(ji,jj,jk,jpnfe)/(trn(ji,jj,jk,jpphy)+rtrn) |
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| 121 | zfactch = trn(ji,jj,jk,jpnch)/(trn(ji,jj,jk,jpphy)+rtrn) |
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| 122 | |
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| 123 | tra(ji,jj,jk,jpphy) = tra(ji,jj,jk,jpphy) - zmortp |
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| 124 | tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) - zmortp * zfactch |
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| 125 | tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) - zmortp * zfactfe |
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| 126 | zprcaca = xfracal(ji,jj,jk) * zmortp |
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| 127 | zfracal = 0.5 * xfracal(ji,jj,jk) |
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| 128 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) - zprcaca |
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| 129 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) - 2. * zprcaca |
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| 130 | tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) + zprcaca |
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| 131 | #if defined key_kriest |
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| 132 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zmortp |
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| 133 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + ztortp * xkr_dnano + zrespp * xkr_ddiat |
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| 134 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + zmortp * zfactfe |
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| 135 | #else |
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| 136 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zfracal * zmortp |
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| 137 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + ( 1. - zfracal ) * zmortp |
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| 138 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + ( 1. - zfracal ) * zmortp * zfactfe |
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| 139 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + zfracal * zmortp * zfactfe |
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| 140 | #endif |
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| 141 | END DO |
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| 142 | END DO |
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| 143 | END DO |
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| 144 | ! |
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| 145 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 146 | WRITE(charout, FMT="('nano')") |
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| 147 | CALL prt_ctl_trc_info(charout) |
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| 148 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 149 | ENDIF |
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| 150 | |
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| 151 | END SUBROUTINE p4z_nano |
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| 152 | |
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| 153 | SUBROUTINE p4z_diat |
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| 154 | !!--------------------------------------------------------------------- |
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| 155 | !! *** ROUTINE p4z_diat *** |
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| 156 | !! |
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| 157 | !! ** Purpose : Compute the mortality terms for diatoms |
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| 158 | !! |
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| 159 | !! ** Method : - ??? |
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| 160 | !!--------------------------------------------------------------------- |
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| 161 | INTEGER :: ji, jj, jk |
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| 162 | REAL(wp) :: zfactfe,zfactsi,zfactch, zcompadi |
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| 163 | REAL(wp) :: zrespp2, ztortp2, zmortp2 |
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| 164 | CHARACTER (len=25) :: charout |
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| 165 | |
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| 166 | !!--------------------------------------------------------------------- |
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| 167 | |
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| 168 | |
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| 169 | ! Aggregation term for diatoms is increased in case of nutrient |
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| 170 | ! stress as observed in reality. The stressed cells become more |
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| 171 | ! sticky and coagulate to sink quickly out of the euphotic zone |
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| 172 | ! ------------------------------------------------------------ |
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| 173 | |
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| 174 | DO jk = 1, jpkm1 |
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| 175 | DO jj = 1, jpj |
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| 176 | DO ji = 1, jpi |
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| 177 | |
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| 178 | zcompadi = MAX( ( trn(ji,jj,jk,jpdia) - 1e-8), 0. ) |
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| 179 | |
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| 180 | ! Aggregation term for diatoms is increased in case of nutrient |
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| 181 | ! stress as observed in reality. The stressed cells become more |
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| 182 | ! sticky and coagulate to sink quickly out of the euphotic zone |
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| 183 | ! ------------------------------------------------------------ |
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| 184 | |
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| 185 | zrespp2 = 1.e6 * zstep * ( wchl + wchld * ( 1.- xlimdia(ji,jj,jk) ) ) & |
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| 186 | # if defined key_off_degrad |
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| 187 | & * facvol(ji,jj,jk) & |
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| 188 | # endif |
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| 189 | & * xdiss(ji,jj,jk) * zcompadi * trn(ji,jj,jk,jpdia) |
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| 190 | |
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| 191 | |
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| 192 | ! Phytoplankton mortality. |
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| 193 | ! ------------------------ |
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| 194 | ztortp2 = mprat2 * zstep * trn(ji,jj,jk,jpdia) & |
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| 195 | # if defined key_off_degrad |
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| 196 | & * facvol(ji,jj,jk) & |
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| 197 | # endif |
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| 198 | & / ( xkmort + trn(ji,jj,jk,jpdia) ) * zcompadi |
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| 199 | |
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| 200 | zmortp2 = zrespp2 + ztortp2 |
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| 201 | |
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| 202 | ! Update the arrays tra which contains the biological sources and sinks |
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| 203 | ! --------------------------------------------------------------------- |
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| 204 | zfactch = trn(ji,jj,jk,jpdch) / ( trn(ji,jj,jk,jpdia) + rtrn ) |
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| 205 | zfactfe = trn(ji,jj,jk,jpdfe) / ( trn(ji,jj,jk,jpdia) + rtrn ) |
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| 206 | zfactsi = trn(ji,jj,jk,jpbsi) / ( trn(ji,jj,jk,jpdia) + rtrn ) |
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| 207 | |
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| 208 | tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) - zmortp2 |
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| 209 | tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) - zmortp2 * zfactch |
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| 210 | tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) - zmortp2 * zfactfe |
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| 211 | tra(ji,jj,jk,jpbsi) = tra(ji,jj,jk,jpbsi) - zmortp2 * zfactsi |
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| 212 | tra(ji,jj,jk,jpdsi) = tra(ji,jj,jk,jpdsi) + zmortp2 * zfactsi |
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| 213 | #if defined key_kriest |
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| 214 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zmortp2 |
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| 215 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + ztortp2 * xkr_ddiat + zrespp2 * xkr_daggr |
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| 216 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + zmortp2 * zfactfe |
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| 217 | #else |
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| 218 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zrespp2 + 0.5 * ztortp2 |
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| 219 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + 0.5 * ztortp2 |
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| 220 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + 0.5 * ztortp2 * zfactfe |
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| 221 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + ( zrespp2 + 0.5 * ztortp2 ) * zfactfe |
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| 222 | #endif |
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| 223 | END DO |
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| 224 | END DO |
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| 225 | END DO |
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| 226 | ! |
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| 227 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 228 | WRITE(charout, FMT="('diat')") |
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| 229 | CALL prt_ctl_trc_info(charout) |
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| 230 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 231 | ENDIF |
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| 232 | |
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| 233 | END SUBROUTINE p4z_diat |
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| 234 | |
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| 235 | SUBROUTINE p4z_mort_init |
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| 236 | |
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| 237 | !!---------------------------------------------------------------------- |
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| 238 | !! *** ROUTINE p4z_mort_init *** |
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| 239 | !! |
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| 240 | !! ** Purpose : Initialization of phytoplankton parameters |
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| 241 | !! |
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| 242 | !! ** Method : Read the natmort namelist and check the parameters |
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| 243 | !! called at the first timestep (nittrc000) |
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| 244 | !! |
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| 245 | !! ** input : Namelist natmort |
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| 246 | !! |
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| 247 | !!---------------------------------------------------------------------- |
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| 248 | |
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| 249 | NAMELIST/natmort/ wchl, wchld, mprat, mprat2, mpratm |
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| 250 | |
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| 251 | REWIND( numnat ) ! read numnat |
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| 252 | READ ( numnat, natmort ) |
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| 253 | |
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| 254 | IF(lwp) THEN ! control print |
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| 255 | WRITE(numout,*) ' ' |
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| 256 | WRITE(numout,*) ' Namelist parameters for phytoplankton mortality, natmort' |
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| 257 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 258 | WRITE(numout,*) ' quadratic mortality of phytoplankton wchl =', wchl |
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| 259 | WRITE(numout,*) ' maximum quadratic mortality of diatoms wchld =', wchld |
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| 260 | WRITE(numout,*) ' phytoplankton mortality rate mprat =', mprat |
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| 261 | WRITE(numout,*) ' Diatoms mortality rate mprat2 =', mprat2 |
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| 262 | WRITE(numout,*) ' Phytoplankton minimum mortality rate mpratm =', mpratm |
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| 263 | ENDIF |
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| 264 | |
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| 265 | END SUBROUTINE p4z_mort_init |
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| 266 | |
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| 267 | #else |
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| 268 | !!====================================================================== |
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| 269 | !! Dummy module : No PISCES bio-model |
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| 270 | !!====================================================================== |
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| 271 | CONTAINS |
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| 272 | SUBROUTINE p4z_mort ! Empty routine |
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| 273 | END SUBROUTINE p4z_mort |
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| 274 | #endif |
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| 275 | |
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| 276 | !!====================================================================== |
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| 277 | END MODULE p4zmort |
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