[3443] | 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 oce_trc ! shared variables between ocean and passive tracers |
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| 17 | USE trc ! passive tracers common variables |
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| 18 | USE sms_pisces ! PISCES Source Minus Sink variables |
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| 19 | USE p4zsink ! vertical flux of particulate matter due to sinking |
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[4529] | 20 | USE p4zprod ! Primary productivity |
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[3443] | 21 | USE prtctl_trc ! print control for debugging |
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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 |
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| 27 | PUBLIC p4z_mort_init |
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| 28 | |
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| 29 | !! * Shared module variables |
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[4147] | 30 | REAL(wp), PUBLIC :: wchl !: |
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| 31 | REAL(wp), PUBLIC :: wchld !: |
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| 32 | REAL(wp), PUBLIC :: wchldm !: |
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| 33 | REAL(wp), PUBLIC :: mprat !: |
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| 34 | REAL(wp), PUBLIC :: mprat2 !: |
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[3443] | 35 | |
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| 36 | |
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| 37 | !!---------------------------------------------------------------------- |
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| 38 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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[5215] | 39 | !! $Id$ |
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[3443] | 40 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 41 | !!---------------------------------------------------------------------- |
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| 42 | |
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| 43 | CONTAINS |
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| 44 | |
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| 45 | SUBROUTINE p4z_mort( kt ) |
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| 46 | !!--------------------------------------------------------------------- |
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| 47 | !! *** ROUTINE p4z_mort *** |
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| 48 | !! |
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| 49 | !! ** Purpose : Calls the different subroutine to initialize and compute |
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| 50 | !! the different phytoplankton mortality terms |
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| 51 | !! |
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| 52 | !! ** Method : - ??? |
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| 53 | !!--------------------------------------------------------------------- |
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| 54 | INTEGER, INTENT(in) :: kt ! ocean time step |
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| 55 | !!--------------------------------------------------------------------- |
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| 56 | |
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| 57 | CALL p4z_nano ! nanophytoplankton |
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| 58 | |
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| 59 | CALL p4z_diat ! diatoms |
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| 60 | |
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| 61 | END SUBROUTINE p4z_mort |
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| 62 | |
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| 63 | |
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| 64 | SUBROUTINE p4z_nano |
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| 65 | !!--------------------------------------------------------------------- |
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| 66 | !! *** ROUTINE p4z_nano *** |
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| 67 | !! |
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| 68 | !! ** Purpose : Compute the mortality terms for nanophytoplankton |
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| 69 | !! |
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| 70 | !! ** Method : - ??? |
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| 71 | !!--------------------------------------------------------------------- |
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| 72 | INTEGER :: ji, jj, jk |
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[4529] | 73 | REAL(wp) :: zsizerat, zcompaph |
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[3443] | 74 | REAL(wp) :: zfactfe, zfactch, zprcaca, zfracal |
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[7041] | 75 | REAL(wp) :: ztortp , zrespp , zmortp |
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[3443] | 76 | CHARACTER (len=25) :: charout |
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| 77 | !!--------------------------------------------------------------------- |
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| 78 | ! |
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| 79 | IF( nn_timing == 1 ) CALL timing_start('p4z_nano') |
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| 80 | ! |
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| 81 | prodcal(:,:,:) = 0. !: calcite production variable set to zero |
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| 82 | DO jk = 1, jpkm1 |
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| 83 | DO jj = 1, jpj |
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| 84 | DO ji = 1, jpi |
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[5385] | 85 | zcompaph = MAX( ( trb(ji,jj,jk,jpphy) - 1e-8 ), 0.e0 ) |
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[4529] | 86 | ! When highly limited by macronutrients, very small cells |
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| 87 | ! dominate the community. As a consequence, aggregation |
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| 88 | ! due to turbulence is negligible. Mortality is also set |
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| 89 | ! to 0 |
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[5385] | 90 | zsizerat = MIN(1., MAX( 0., (quotan(ji,jj,jk) - 0.2) / 0.3) ) * trb(ji,jj,jk,jpphy) |
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[3443] | 91 | ! Squared mortality of Phyto similar to a sedimentation term during |
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| 92 | ! blooms (Doney et al. 1996) |
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[7041] | 93 | zrespp = wchl * 1.e6 * xstep * xdiss(ji,jj,jk) * zcompaph * zsizerat |
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[3443] | 94 | |
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| 95 | ! Phytoplankton mortality. This mortality loss is slightly |
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| 96 | ! increased when nutrients are limiting phytoplankton growth |
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| 97 | ! as observed for instance in case of iron limitation. |
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[5385] | 98 | ztortp = mprat * xstep * zcompaph / ( xkmort + trb(ji,jj,jk,jpphy) ) * zsizerat |
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[3443] | 99 | |
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| 100 | zmortp = zrespp + ztortp |
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| 101 | |
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| 102 | ! Update the arrays TRA which contains the biological sources and sinks |
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| 103 | |
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[5385] | 104 | zfactfe = trb(ji,jj,jk,jpnfe)/(trb(ji,jj,jk,jpphy)+rtrn) |
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| 105 | zfactch = trb(ji,jj,jk,jpnch)/(trb(ji,jj,jk,jpphy)+rtrn) |
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[3443] | 106 | tra(ji,jj,jk,jpphy) = tra(ji,jj,jk,jpphy) - zmortp |
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| 107 | tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) - zmortp * zfactch |
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| 108 | tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) - zmortp * zfactfe |
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| 109 | zprcaca = xfracal(ji,jj,jk) * zmortp |
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| 110 | ! |
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| 111 | prodcal(ji,jj,jk) = prodcal(ji,jj,jk) + zprcaca ! prodcal=prodcal(nanophy)+prodcal(microzoo)+prodcal(mesozoo) |
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| 112 | ! |
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| 113 | zfracal = 0.5 * xfracal(ji,jj,jk) |
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| 114 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) - zprcaca |
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| 115 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) - 2. * zprcaca |
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| 116 | tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) + zprcaca |
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| 117 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zfracal * zmortp |
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| 118 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + ( 1. - zfracal ) * zmortp |
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| 119 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + ( 1. - zfracal ) * zmortp * zfactfe |
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| 120 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + zfracal * zmortp * zfactfe |
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| 121 | END DO |
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| 122 | END DO |
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| 123 | END DO |
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| 124 | ! |
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| 125 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 126 | WRITE(charout, FMT="('nano')") |
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| 127 | CALL prt_ctl_trc_info(charout) |
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| 128 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 129 | ENDIF |
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| 130 | ! |
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| 131 | IF( nn_timing == 1 ) CALL timing_stop('p4z_nano') |
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| 132 | ! |
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| 133 | END SUBROUTINE p4z_nano |
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| 134 | |
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| 135 | SUBROUTINE p4z_diat |
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| 136 | !!--------------------------------------------------------------------- |
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| 137 | !! *** ROUTINE p4z_diat *** |
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| 138 | !! |
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| 139 | !! ** Purpose : Compute the mortality terms for diatoms |
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| 140 | !! |
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| 141 | !! ** Method : - ??? |
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| 142 | !!--------------------------------------------------------------------- |
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| 143 | INTEGER :: ji, jj, jk |
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| 144 | REAL(wp) :: zfactfe,zfactsi,zfactch, zcompadi |
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[7041] | 145 | REAL(wp) :: zrespp2, ztortp2, zmortp2 |
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[3446] | 146 | REAL(wp) :: zlim2, zlim1 |
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[3443] | 147 | CHARACTER (len=25) :: charout |
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| 148 | !!--------------------------------------------------------------------- |
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| 149 | ! |
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| 150 | IF( nn_timing == 1 ) CALL timing_start('p4z_diat') |
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| 151 | ! |
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| 152 | |
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| 153 | ! Aggregation term for diatoms is increased in case of nutrient |
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| 154 | ! stress as observed in reality. The stressed cells become more |
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| 155 | ! sticky and coagulate to sink quickly out of the euphotic zone |
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| 156 | ! ------------------------------------------------------------ |
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| 157 | |
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| 158 | DO jk = 1, jpkm1 |
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| 159 | DO jj = 1, jpj |
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| 160 | DO ji = 1, jpi |
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| 161 | |
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[5385] | 162 | zcompadi = MAX( ( trb(ji,jj,jk,jpdia) - 1e-9), 0. ) |
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[3443] | 163 | |
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| 164 | ! Aggregation term for diatoms is increased in case of nutrient |
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| 165 | ! stress as observed in reality. The stressed cells become more |
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| 166 | ! sticky and coagulate to sink quickly out of the euphotic zone |
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| 167 | ! ------------------------------------------------------------ |
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| 168 | ! Phytoplankton respiration |
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| 169 | ! ------------------------ |
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[3446] | 170 | zlim2 = xlimdia(ji,jj,jk) * xlimdia(ji,jj,jk) |
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| 171 | zlim1 = 0.25 * ( 1. - zlim2 ) / ( 0.25 + zlim2 ) |
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[7041] | 172 | zrespp2 = 1.e6 * xstep * ( wchld + wchldm * zlim1 ) * xdiss(ji,jj,jk) * zcompadi * trb(ji,jj,jk,jpdia) |
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[3443] | 173 | |
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| 174 | ! Phytoplankton mortality. |
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| 175 | ! ------------------------ |
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[7041] | 176 | ztortp2 = mprat2 * xstep * trb(ji,jj,jk,jpdia) / ( xkmort + trb(ji,jj,jk,jpdia) ) * zcompadi |
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[3443] | 177 | |
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| 178 | zmortp2 = zrespp2 + ztortp2 |
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| 179 | |
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| 180 | ! Update the arrays tra which contains the biological sources and sinks |
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| 181 | ! --------------------------------------------------------------------- |
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[5385] | 182 | zfactch = trb(ji,jj,jk,jpdch) / ( trb(ji,jj,jk,jpdia) + rtrn ) |
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| 183 | zfactfe = trb(ji,jj,jk,jpdfe) / ( trb(ji,jj,jk,jpdia) + rtrn ) |
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| 184 | zfactsi = trb(ji,jj,jk,jpdsi) / ( trb(ji,jj,jk,jpdia) + rtrn ) |
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[3443] | 185 | tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) - zmortp2 |
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| 186 | tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) - zmortp2 * zfactch |
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| 187 | tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) - zmortp2 * zfactfe |
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| 188 | tra(ji,jj,jk,jpdsi) = tra(ji,jj,jk,jpdsi) - zmortp2 * zfactsi |
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| 189 | tra(ji,jj,jk,jpgsi) = tra(ji,jj,jk,jpgsi) + zmortp2 * zfactsi |
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| 190 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zrespp2 + 0.5 * ztortp2 |
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| 191 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + 0.5 * ztortp2 |
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| 192 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + 0.5 * ztortp2 * zfactfe |
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| 193 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + ( zrespp2 + 0.5 * ztortp2 ) * zfactfe |
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| 194 | END DO |
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| 195 | END DO |
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| 196 | END DO |
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| 197 | ! |
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| 198 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 199 | WRITE(charout, FMT="('diat')") |
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| 200 | CALL prt_ctl_trc_info(charout) |
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| 201 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 202 | ENDIF |
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| 203 | ! |
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| 204 | IF( nn_timing == 1 ) CALL timing_stop('p4z_diat') |
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| 205 | ! |
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| 206 | END SUBROUTINE p4z_diat |
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| 207 | |
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| 208 | SUBROUTINE p4z_mort_init |
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| 209 | |
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| 210 | !!---------------------------------------------------------------------- |
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| 211 | !! *** ROUTINE p4z_mort_init *** |
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| 212 | !! |
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| 213 | !! ** Purpose : Initialization of phytoplankton parameters |
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| 214 | !! |
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| 215 | !! ** Method : Read the nampismort namelist and check the parameters |
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| 216 | !! called at the first timestep |
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| 217 | !! |
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| 218 | !! ** input : Namelist nampismort |
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| 219 | !! |
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| 220 | !!---------------------------------------------------------------------- |
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| 221 | |
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[3475] | 222 | NAMELIST/nampismort/ wchl, wchld, wchldm, mprat, mprat2 |
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[4147] | 223 | INTEGER :: ios ! Local integer output status for namelist read |
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[3443] | 224 | |
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[4147] | 225 | REWIND( numnatp_ref ) ! Namelist nampismort in reference namelist : Pisces phytoplankton |
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| 226 | READ ( numnatp_ref, nampismort, IOSTAT = ios, ERR = 901) |
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| 227 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampismort in reference namelist', lwp ) |
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[3443] | 228 | |
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[4147] | 229 | REWIND( numnatp_cfg ) ! Namelist nampismort in configuration namelist : Pisces phytoplankton |
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| 230 | READ ( numnatp_cfg, nampismort, IOSTAT = ios, ERR = 902 ) |
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| 231 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampismort in configuration namelist', lwp ) |
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[4624] | 232 | IF(lwm) WRITE ( numonp, nampismort ) |
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[4147] | 233 | |
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[3443] | 234 | IF(lwp) THEN ! control print |
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| 235 | WRITE(numout,*) ' ' |
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| 236 | WRITE(numout,*) ' Namelist parameters for phytoplankton mortality, nampismort' |
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| 237 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 238 | WRITE(numout,*) ' quadratic mortality of phytoplankton wchl =', wchl |
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| 239 | WRITE(numout,*) ' maximum quadratic mortality of diatoms wchld =', wchld |
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[3475] | 240 | WRITE(numout,*) ' maximum quadratic mortality of diatoms wchldm =', wchldm |
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[3443] | 241 | WRITE(numout,*) ' phytoplankton mortality rate mprat =', mprat |
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| 242 | WRITE(numout,*) ' Diatoms mortality rate mprat2 =', mprat2 |
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| 243 | ENDIF |
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| 244 | |
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| 245 | END SUBROUTINE p4z_mort_init |
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| 246 | |
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| 247 | #else |
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| 248 | !!====================================================================== |
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| 249 | !! Dummy module : No PISCES bio-model |
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| 250 | !!====================================================================== |
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| 251 | CONTAINS |
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| 252 | SUBROUTINE p4z_mort ! Empty routine |
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| 253 | END SUBROUTINE p4z_mort |
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| 254 | #endif |
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| 255 | |
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| 256 | !!====================================================================== |
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[5656] | 257 | END MODULE p4zmort |
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