[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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[9169] | 9 | !! p4z_mort : Compute the mortality terms for phytoplankton |
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| 10 | !! p4z_mort_init : Initialize the mortality params for phytoplankton |
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[3443] | 11 | !!---------------------------------------------------------------------- |
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[9169] | 12 | USE oce_trc ! shared variables between ocean and passive tracers |
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| 13 | USE trc ! passive tracers common variables |
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| 14 | USE sms_pisces ! PISCES Source Minus Sink variables |
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| 15 | USE p4zprod ! Primary productivity |
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[10227] | 16 | USE p4zlim ! Phytoplankton limitation terms |
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[13286] | 17 | USE prtctl ! print control for debugging |
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[3443] | 18 | |
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| 19 | IMPLICIT NONE |
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| 20 | PRIVATE |
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| 21 | |
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| 22 | PUBLIC p4z_mort |
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| 23 | PUBLIC p4z_mort_init |
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| 24 | |
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[9169] | 25 | REAL(wp), PUBLIC :: wchl !: |
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| 26 | REAL(wp), PUBLIC :: wchld !: |
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| 27 | REAL(wp), PUBLIC :: wchldm !: |
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| 28 | REAL(wp), PUBLIC :: mprat !: |
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| 29 | REAL(wp), PUBLIC :: mprat2 !: |
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[3443] | 30 | |
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[12377] | 31 | !! * Substitutions |
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| 32 | # include "do_loop_substitute.h90" |
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[3443] | 33 | !!---------------------------------------------------------------------- |
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[10067] | 34 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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[7753] | 35 | !! $Id$ |
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[10068] | 36 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3443] | 37 | !!---------------------------------------------------------------------- |
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| 38 | CONTAINS |
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| 39 | |
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[12377] | 40 | SUBROUTINE p4z_mort( kt, Kbb, Krhs ) |
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[3443] | 41 | !!--------------------------------------------------------------------- |
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| 42 | !! *** ROUTINE p4z_mort *** |
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| 43 | !! |
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| 44 | !! ** Purpose : Calls the different subroutine to initialize and compute |
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| 45 | !! the different phytoplankton mortality terms |
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| 46 | !! |
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| 47 | !! ** Method : - ??? |
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| 48 | !!--------------------------------------------------------------------- |
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| 49 | INTEGER, INTENT(in) :: kt ! ocean time step |
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[12377] | 50 | INTEGER, INTENT(in) :: Kbb, Krhs ! time level indices |
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[3443] | 51 | !!--------------------------------------------------------------------- |
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[9169] | 52 | ! |
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[12377] | 53 | CALL p4z_nano( Kbb, Krhs ) ! nanophytoplankton |
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[9169] | 54 | ! |
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[12377] | 55 | CALL p4z_diat( Kbb, Krhs ) ! diatoms |
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[9169] | 56 | ! |
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[3443] | 57 | END SUBROUTINE p4z_mort |
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| 58 | |
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| 59 | |
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[12377] | 60 | SUBROUTINE p4z_nano( Kbb, Krhs ) |
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[3443] | 61 | !!--------------------------------------------------------------------- |
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| 62 | !! *** ROUTINE p4z_nano *** |
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| 63 | !! |
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| 64 | !! ** Purpose : Compute the mortality terms for nanophytoplankton |
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| 65 | !! |
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| 66 | !! ** Method : - ??? |
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| 67 | !!--------------------------------------------------------------------- |
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[12377] | 68 | INTEGER, INTENT(in) :: Kbb, Krhs ! time level indices |
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[9169] | 69 | INTEGER :: ji, jj, jk |
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| 70 | REAL(wp) :: zsizerat, zcompaph |
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| 71 | REAL(wp) :: zfactfe, zfactch, zprcaca, zfracal |
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| 72 | REAL(wp) :: ztortp , zrespp , zmortp |
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| 73 | CHARACTER (len=25) :: charout |
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[3443] | 74 | !!--------------------------------------------------------------------- |
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| 75 | ! |
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[9124] | 76 | IF( ln_timing ) CALL timing_start('p4z_nano') |
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[3443] | 77 | ! |
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[9169] | 78 | prodcal(:,:,:) = 0._wp ! calcite production variable set to zero |
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[13295] | 79 | DO_3D( 1, 1, 1, 1, 1, jpkm1 ) |
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[12377] | 80 | zcompaph = MAX( ( tr(ji,jj,jk,jpphy,Kbb) - 1e-8 ), 0.e0 ) |
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| 81 | ! When highly limited by macronutrients, very small cells |
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| 82 | ! dominate the community. As a consequence, aggregation |
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| 83 | ! due to turbulence is negligible. Mortality is also set |
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| 84 | ! to 0 |
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| 85 | zsizerat = MIN(1., MAX( 0., (quotan(ji,jj,jk) - 0.2) / 0.3) ) * tr(ji,jj,jk,jpphy,Kbb) |
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| 86 | ! Squared mortality of Phyto similar to a sedimentation term during |
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| 87 | ! blooms (Doney et al. 1996) |
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| 88 | zrespp = wchl * 1.e6 * xstep * xdiss(ji,jj,jk) * zcompaph * zsizerat |
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[3443] | 89 | |
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[12377] | 90 | ! Phytoplankton mortality. This mortality loss is slightly |
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| 91 | ! increased when nutrients are limiting phytoplankton growth |
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| 92 | ! as observed for instance in case of iron limitation. |
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| 93 | ztortp = mprat * xstep * zcompaph / ( xkmort + tr(ji,jj,jk,jpphy,Kbb) ) * zsizerat |
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[3443] | 94 | |
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[12377] | 95 | zmortp = zrespp + ztortp |
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[3443] | 96 | |
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[12377] | 97 | ! Update the arrays TRA which contains the biological sources and sinks |
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[3443] | 98 | |
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[12377] | 99 | zfactfe = tr(ji,jj,jk,jpnfe,Kbb)/(tr(ji,jj,jk,jpphy,Kbb)+rtrn) |
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| 100 | zfactch = tr(ji,jj,jk,jpnch,Kbb)/(tr(ji,jj,jk,jpphy,Kbb)+rtrn) |
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| 101 | tr(ji,jj,jk,jpphy,Krhs) = tr(ji,jj,jk,jpphy,Krhs) - zmortp |
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| 102 | tr(ji,jj,jk,jpnch,Krhs) = tr(ji,jj,jk,jpnch,Krhs) - zmortp * zfactch |
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| 103 | tr(ji,jj,jk,jpnfe,Krhs) = tr(ji,jj,jk,jpnfe,Krhs) - zmortp * zfactfe |
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| 104 | zprcaca = xfracal(ji,jj,jk) * zmortp |
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| 105 | ! |
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| 106 | prodcal(ji,jj,jk) = prodcal(ji,jj,jk) + zprcaca ! prodcal=prodcal(nanophy)+prodcal(microzoo)+prodcal(mesozoo) |
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| 107 | ! |
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| 108 | zfracal = 0.5 * xfracal(ji,jj,jk) |
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| 109 | tr(ji,jj,jk,jpdic,Krhs) = tr(ji,jj,jk,jpdic,Krhs) - zprcaca |
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| 110 | tr(ji,jj,jk,jptal,Krhs) = tr(ji,jj,jk,jptal,Krhs) - 2. * zprcaca |
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| 111 | tr(ji,jj,jk,jpcal,Krhs) = tr(ji,jj,jk,jpcal,Krhs) + zprcaca |
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| 112 | tr(ji,jj,jk,jpgoc,Krhs) = tr(ji,jj,jk,jpgoc,Krhs) + zfracal * zmortp |
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| 113 | tr(ji,jj,jk,jppoc,Krhs) = tr(ji,jj,jk,jppoc,Krhs) + ( 1. - zfracal ) * zmortp |
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| 114 | prodpoc(ji,jj,jk) = prodpoc(ji,jj,jk) + ( 1. - zfracal ) * zmortp |
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| 115 | prodgoc(ji,jj,jk) = prodgoc(ji,jj,jk) + zfracal * zmortp |
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| 116 | tr(ji,jj,jk,jpsfe,Krhs) = tr(ji,jj,jk,jpsfe,Krhs) + ( 1. - zfracal ) * zmortp * zfactfe |
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| 117 | tr(ji,jj,jk,jpbfe,Krhs) = tr(ji,jj,jk,jpbfe,Krhs) + zfracal * zmortp * zfactfe |
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| 118 | END_3D |
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[3443] | 119 | ! |
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[12377] | 120 | IF(sn_cfctl%l_prttrc) THEN ! print mean trends (used for debugging) |
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[3443] | 121 | WRITE(charout, FMT="('nano')") |
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[13286] | 122 | CALL prt_ctl_info( charout, cdcomp = 'top' ) |
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| 123 | CALL prt_ctl(tab4d_1=tr(:,:,:,:,Krhs), mask1=tmask, clinfo=ctrcnm) |
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[3443] | 124 | ENDIF |
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| 125 | ! |
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[9124] | 126 | IF( ln_timing ) CALL timing_stop('p4z_nano') |
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[3443] | 127 | ! |
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| 128 | END SUBROUTINE p4z_nano |
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| 129 | |
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[9124] | 130 | |
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[12377] | 131 | SUBROUTINE p4z_diat( Kbb, Krhs ) |
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[3443] | 132 | !!--------------------------------------------------------------------- |
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| 133 | !! *** ROUTINE p4z_diat *** |
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| 134 | !! |
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| 135 | !! ** Purpose : Compute the mortality terms for diatoms |
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| 136 | !! |
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| 137 | !! ** Method : - ??? |
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| 138 | !!--------------------------------------------------------------------- |
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[12377] | 139 | INTEGER, INTENT(in) :: Kbb, Krhs ! time level indices |
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[9169] | 140 | INTEGER :: ji, jj, jk |
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| 141 | REAL(wp) :: zfactfe,zfactsi,zfactch, zcompadi |
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| 142 | REAL(wp) :: zrespp2, ztortp2, zmortp2 |
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| 143 | REAL(wp) :: zlim2, zlim1 |
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| 144 | CHARACTER (len=25) :: charout |
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[3443] | 145 | !!--------------------------------------------------------------------- |
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| 146 | ! |
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[9124] | 147 | IF( ln_timing ) CALL timing_start('p4z_diat') |
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[3443] | 148 | ! |
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| 149 | ! Aggregation term for diatoms is increased in case of nutrient |
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| 150 | ! stress as observed in reality. The stressed cells become more |
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| 151 | ! sticky and coagulate to sink quickly out of the euphotic zone |
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| 152 | ! ------------------------------------------------------------ |
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| 153 | |
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[13295] | 154 | DO_3D( 1, 1, 1, 1, 1, jpkm1 ) |
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[3443] | 155 | |
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[12377] | 156 | zcompadi = MAX( ( tr(ji,jj,jk,jpdia,Kbb) - 1e-9), 0. ) |
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[3443] | 157 | |
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[12377] | 158 | ! Aggregation term for diatoms is increased in case of nutrient |
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| 159 | ! stress as observed in reality. The stressed cells become more |
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| 160 | ! sticky and coagulate to sink quickly out of the euphotic zone |
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| 161 | ! ------------------------------------------------------------ |
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| 162 | ! Phytoplankton respiration |
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| 163 | ! ------------------------ |
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| 164 | zlim2 = xlimdia(ji,jj,jk) * xlimdia(ji,jj,jk) |
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| 165 | zlim1 = 0.25 * ( 1. - zlim2 ) / ( 0.25 + zlim2 ) |
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| 166 | zrespp2 = 1.e6 * xstep * ( wchld + wchldm * zlim1 ) * xdiss(ji,jj,jk) * zcompadi * tr(ji,jj,jk,jpdia,Kbb) |
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[3443] | 167 | |
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[12377] | 168 | ! Phytoplankton mortality. |
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| 169 | ! ------------------------ |
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| 170 | ztortp2 = mprat2 * xstep * tr(ji,jj,jk,jpdia,Kbb) / ( xkmort + tr(ji,jj,jk,jpdia,Kbb) ) * zcompadi |
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[3443] | 171 | |
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[12377] | 172 | zmortp2 = zrespp2 + ztortp2 |
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[3443] | 173 | |
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[12377] | 174 | ! Update the arrays tr(:,:,:,:,Krhs) which contains the biological sources and sinks |
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| 175 | ! --------------------------------------------------------------------- |
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| 176 | zfactch = tr(ji,jj,jk,jpdch,Kbb) / ( tr(ji,jj,jk,jpdia,Kbb) + rtrn ) |
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| 177 | zfactfe = tr(ji,jj,jk,jpdfe,Kbb) / ( tr(ji,jj,jk,jpdia,Kbb) + rtrn ) |
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| 178 | zfactsi = tr(ji,jj,jk,jpdsi,Kbb) / ( tr(ji,jj,jk,jpdia,Kbb) + rtrn ) |
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| 179 | tr(ji,jj,jk,jpdia,Krhs) = tr(ji,jj,jk,jpdia,Krhs) - zmortp2 |
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| 180 | tr(ji,jj,jk,jpdch,Krhs) = tr(ji,jj,jk,jpdch,Krhs) - zmortp2 * zfactch |
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| 181 | tr(ji,jj,jk,jpdfe,Krhs) = tr(ji,jj,jk,jpdfe,Krhs) - zmortp2 * zfactfe |
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| 182 | tr(ji,jj,jk,jpdsi,Krhs) = tr(ji,jj,jk,jpdsi,Krhs) - zmortp2 * zfactsi |
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| 183 | tr(ji,jj,jk,jpgsi,Krhs) = tr(ji,jj,jk,jpgsi,Krhs) + zmortp2 * zfactsi |
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| 184 | tr(ji,jj,jk,jpgoc,Krhs) = tr(ji,jj,jk,jpgoc,Krhs) + zrespp2 + 0.5 * ztortp2 |
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| 185 | tr(ji,jj,jk,jppoc,Krhs) = tr(ji,jj,jk,jppoc,Krhs) + 0.5 * ztortp2 |
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| 186 | prodpoc(ji,jj,jk) = prodpoc(ji,jj,jk) + 0.5 * ztortp2 |
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| 187 | prodgoc(ji,jj,jk) = prodgoc(ji,jj,jk) + zrespp2 + 0.5 * ztortp2 |
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| 188 | tr(ji,jj,jk,jpsfe,Krhs) = tr(ji,jj,jk,jpsfe,Krhs) + 0.5 * ztortp2 * zfactfe |
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| 189 | tr(ji,jj,jk,jpbfe,Krhs) = tr(ji,jj,jk,jpbfe,Krhs) + ( zrespp2 + 0.5 * ztortp2 ) * zfactfe |
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| 190 | END_3D |
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[3443] | 191 | ! |
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[12377] | 192 | IF(sn_cfctl%l_prttrc) THEN ! print mean trends (used for debugging) |
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[3443] | 193 | WRITE(charout, FMT="('diat')") |
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[13286] | 194 | CALL prt_ctl_info( charout, cdcomp = 'top' ) |
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| 195 | CALL prt_ctl(tab4d_1=tr(:,:,:,:,Krhs), mask1=tmask, clinfo=ctrcnm) |
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[3443] | 196 | ENDIF |
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| 197 | ! |
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[9124] | 198 | IF( ln_timing ) CALL timing_stop('p4z_diat') |
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[3443] | 199 | ! |
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| 200 | END SUBROUTINE p4z_diat |
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| 201 | |
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[9124] | 202 | |
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[3443] | 203 | SUBROUTINE p4z_mort_init |
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| 204 | !!---------------------------------------------------------------------- |
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| 205 | !! *** ROUTINE p4z_mort_init *** |
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| 206 | !! |
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| 207 | !! ** Purpose : Initialization of phytoplankton parameters |
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| 208 | !! |
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| 209 | !! ** Method : Read the nampismort namelist and check the parameters |
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[9169] | 210 | !! called at the first timestep |
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[3443] | 211 | !! |
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| 212 | !! ** input : Namelist nampismort |
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| 213 | !! |
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| 214 | !!---------------------------------------------------------------------- |
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[9124] | 215 | INTEGER :: ios ! Local integer |
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| 216 | ! |
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[7646] | 217 | NAMELIST/namp4zmort/ wchl, wchld, wchldm, mprat, mprat2 |
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[9124] | 218 | !!---------------------------------------------------------------------- |
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| 219 | ! |
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[9169] | 220 | IF(lwp) THEN |
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| 221 | WRITE(numout,*) |
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| 222 | WRITE(numout,*) 'p4z_mort_init : Initialization of phytoplankton mortality parameters' |
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| 223 | WRITE(numout,*) '~~~~~~~~~~~~~' |
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| 224 | ENDIF |
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| 225 | ! |
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[7646] | 226 | READ ( numnatp_ref, namp4zmort, IOSTAT = ios, ERR = 901) |
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[11536] | 227 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namp4zmort in reference namelist' ) |
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[7646] | 228 | READ ( numnatp_cfg, namp4zmort, IOSTAT = ios, ERR = 902 ) |
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[11536] | 229 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namp4zmort in configuration namelist' ) |
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[9169] | 230 | IF(lwm) WRITE( numonp, namp4zmort ) |
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[9124] | 231 | ! |
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[3443] | 232 | IF(lwp) THEN ! control print |
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[9169] | 233 | WRITE(numout,*) ' Namelist : namp4zmort' |
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| 234 | WRITE(numout,*) ' quadratic mortality of phytoplankton wchl =', wchl |
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| 235 | WRITE(numout,*) ' maximum quadratic mortality of diatoms wchld =', wchld |
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| 236 | WRITE(numout,*) ' maximum quadratic mortality of diatoms wchldm =', wchldm |
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| 237 | WRITE(numout,*) ' phytoplankton mortality rate mprat =', mprat |
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| 238 | WRITE(numout,*) ' Diatoms mortality rate mprat2 =', mprat2 |
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[3443] | 239 | ENDIF |
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[9124] | 240 | ! |
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[3443] | 241 | END SUBROUTINE p4z_mort_init |
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| 242 | |
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| 243 | !!====================================================================== |
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[5656] | 244 | END MODULE p4zmort |
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