[935] | 1 | MODULE p4zlys |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p4zlys *** |
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| 4 | !! TOP : PISCES |
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| 5 | !!====================================================================== |
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| 6 | !! History : - ! 1988-07 (E. MAIER-REIMER) Original code |
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| 7 | !! - ! 1998 (O. Aumont) additions |
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| 8 | !! - ! 1999 (C. Le Quere) modifications |
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| 9 | !! 1.0 ! 2004 (O. Aumont) modifications |
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| 10 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | #if defined key_pisces |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! 'key_pisces' PISCES bio-model |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | !! p4z_lys : Compute the CaCO3 dissolution |
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| 17 | !! p4z_lys_init : Read the namelist parameters |
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| 18 | !!---------------------------------------------------------------------- |
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| 19 | USE trc |
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| 20 | USE oce_trc ! |
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[1119] | 21 | USE trc |
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[1073] | 22 | USE sms_pisces |
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[935] | 23 | USE prtctl_trc |
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[1457] | 24 | USE iom |
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[935] | 25 | |
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| 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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| 29 | PUBLIC p4z_lys ! called in p4zprg.F90 |
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| 30 | |
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| 31 | !! * Shared module variables |
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[1073] | 32 | REAL(wp), PUBLIC :: & |
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| 33 | kdca = 0.327e3_wp , & !: |
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| 34 | nca = 1.0_wp !: |
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[935] | 35 | |
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| 36 | !! * Module variables |
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| 37 | REAL(wp) :: & |
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| 38 | calcon = 1.03E-2 ! mean calcite concentration [Ca2+] in sea water [mole/kg solution] |
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| 39 | |
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[1735] | 40 | INTEGER :: & |
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| 41 | rmtss !: number of seconds per month |
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| 42 | |
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[935] | 43 | !!---------------------------------------------------------------------- |
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| 44 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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[1152] | 45 | !! $Id$ |
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[935] | 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_lys( kt ) |
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| 52 | !!--------------------------------------------------------------------- |
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| 53 | !! *** ROUTINE p4z_lys *** |
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| 54 | !! |
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| 55 | !! ** Purpose : CALCULATES DEGREE OF CACO3 SATURATION IN THE WATER |
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| 56 | !! COLUMN, DISSOLUTION/PRECIPITATION OF CACO3 AND LOSS |
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| 57 | !! OF CACO3 TO THE CACO3 SEDIMENT POOL. |
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| 58 | !! |
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| 59 | !! ** Method : - ??? |
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| 60 | !!--------------------------------------------------------------------- |
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| 61 | INTEGER, INTENT(in) :: kt ! ocean time step |
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| 62 | INTEGER :: ji, jj, jk, jn |
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| 63 | REAL(wp) :: zbot, zalk, zdic, zph, zremco3, zah2 |
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| 64 | REAL(wp) :: zdispot, zfact, zalka |
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| 65 | REAL(wp) :: zomegaca, zexcess, zexcess0 |
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| 66 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zco3 |
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[1457] | 67 | #if defined key_trc_dia3d && defined key_iomput |
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[1678] | 68 | REAL(wp) :: zrfact2 |
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| 69 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zcaldiss, zw3d |
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[1457] | 70 | #endif |
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[935] | 71 | CHARACTER (len=25) :: charout |
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| 72 | !!--------------------------------------------------------------------- |
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| 73 | |
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| 74 | IF( kt == nittrc000 ) CALL p4z_lys_init ! Initialization (first time-step only) |
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| 75 | |
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[1329] | 76 | zco3(:,:,:) = 0. |
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[935] | 77 | |
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[1678] | 78 | # if defined key_trc_dia3d && defined key_iomput |
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| 79 | zcaldiss(:,:,:) = 0. |
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| 80 | # endif |
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[935] | 81 | ! ------------------------------------------- |
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| 82 | ! COMPUTE [CO3--] and [H+] CONCENTRATIONS |
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| 83 | ! ------------------------------------------- |
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| 84 | |
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| 85 | DO jn = 1, 5 ! BEGIN OF ITERATION |
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| 86 | ! |
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| 87 | !CDIR NOVERRCHK |
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| 88 | DO jk = 1, jpkm1 |
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| 89 | !CDIR NOVERRCHK |
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| 90 | DO jj = 1, jpj |
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| 91 | !CDIR NOVERRCHK |
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| 92 | DO ji = 1, jpi |
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| 93 | |
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| 94 | ! SET DUMMY VARIABLE FOR TOTAL BORATE |
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| 95 | zbot = borat(ji,jj,jk) |
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| 96 | zfact = rhop (ji,jj,jk) / 1000. + rtrn |
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| 97 | |
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| 98 | ! SET DUMMY VARIABLE FOR [H+] |
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| 99 | zph = hi(ji,jj,jk) * tmask(ji,jj,jk) / zfact + ( 1.-tmask(ji,jj,jk) ) * 1.e-9 |
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| 100 | |
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| 101 | ! SET DUMMY VARIABLE FOR [SUM(CO2)]GIVEN |
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| 102 | zdic = trn(ji,jj,jk,jpdic) / zfact |
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| 103 | zalka = trn(ji,jj,jk,jptal) / zfact |
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| 104 | |
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| 105 | ! CALCULATE [ALK]([CO3--], [HCO3-]) |
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| 106 | zalk = zalka - ( akw3(ji,jj,jk) / zph - zph & |
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| 107 | & + zbot / (1.+ zph / akb3(ji,jj,jk) ) ) |
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| 108 | |
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| 109 | ! CALCULATE [H+] and [CO3--] |
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| 110 | zah2 = SQRT( (zdic-zalk)*(zdic-zalk)+ & |
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| 111 | & 4.*(zalk*ak23(ji,jj,jk)/ak13(ji,jj,jk)) & |
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| 112 | & *(2*zdic-zalk)) |
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| 113 | |
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| 114 | zah2=0.5*ak13(ji,jj,jk)/zalk*((zdic-zalk)+zah2) |
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| 115 | zco3(ji,jj,jk) = zalk/(2.+zah2/ak23(ji,jj,jk))*zfact |
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| 116 | |
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| 117 | hi(ji,jj,jk) = zah2*zfact |
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| 118 | |
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| 119 | END DO |
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| 120 | END DO |
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| 121 | END DO |
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| 122 | ! |
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| 123 | END DO |
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| 124 | |
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| 125 | ! --------------------------------------------------------- |
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| 126 | ! CALCULATE DEGREE OF CACO3 SATURATION AND CORRESPONDING |
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| 127 | ! DISSOLOUTION AND PRECIPITATION OF CACO3 (BE AWARE OF |
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| 128 | ! MGCO3) |
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| 129 | ! --------------------------------------------------------- |
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| 130 | |
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| 131 | DO jk = 1, jpkm1 |
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| 132 | DO jj = 1, jpj |
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| 133 | DO ji = 1, jpi |
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| 134 | |
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| 135 | ! DEVIATION OF [CO3--] FROM SATURATION VALUE |
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| 136 | zomegaca = ( calcon * zco3(ji,jj,jk) ) / aksp(ji,jj,jk) |
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| 137 | |
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| 138 | ! SET DEGREE OF UNDER-/SUPERSATURATION |
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| 139 | zexcess0 = MAX( 0., ( 1.- zomegaca ) ) |
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| 140 | zexcess = zexcess0**nca |
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| 141 | |
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| 142 | ! AMOUNT CACO3 (12C) THAT RE-ENTERS SOLUTION |
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| 143 | ! (ACCORDING TO THIS FORMULATION ALSO SOME PARTICULATE |
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| 144 | ! CACO3 GETS DISSOLVED EVEN IN THE CASE OF OVERSATURATION) |
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| 145 | # if defined key_off_degrad |
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| 146 | zdispot = kdca * zexcess * trn(ji,jj,jk,jpcal) * facvol(ji,jj,jk) |
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| 147 | # else |
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| 148 | zdispot = kdca * zexcess * trn(ji,jj,jk,jpcal) |
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| 149 | # endif |
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| 150 | |
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| 151 | ! CHANGE OF [CO3--] , [ALK], PARTICULATE [CACO3], |
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| 152 | ! AND [SUM(CO2)] DUE TO CACO3 DISSOLUTION/PRECIPITATION |
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[1735] | 153 | zremco3 = zdispot / rmtss |
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[935] | 154 | zco3(ji,jj,jk) = zco3(ji,jj,jk) + zremco3 * rfact |
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[1678] | 155 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + 2. * zremco3 |
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| 156 | tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) - zremco3 |
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| 157 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zremco3 |
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[935] | 158 | |
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[1678] | 159 | # if defined key_trc_dia3d && defined key_iomput |
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| 160 | zcaldiss(ji,jj,jk) = zremco3 ! calcite dissolution |
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| 161 | # endif |
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[935] | 162 | END DO |
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| 163 | END DO |
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| 164 | END DO |
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| 165 | |
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[1329] | 166 | # if defined key_trc_diaadd && defined key_trc_dia3d |
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[1457] | 167 | # if ! defined key_iomput |
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| 168 | trc3d(:,:,:,jp_pcs0_3d ) = hi (:,:,:) * tmask(:,:,:) |
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| 169 | trc3d(:,:,:,jp_pcs0_3d + 1) = zco3(:,:,:) * tmask(:,:,:) |
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| 170 | trc3d(:,:,:,jp_pcs0_3d + 2) = aksp(:,:,:) / calcon * tmask(:,:,:) |
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| 171 | # else |
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[1678] | 172 | zrfact2 = 1.e3 * rfact2r |
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| 173 | zw3d(:,:,:) = hi (:,:,:) * tmask(:,:,:) |
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[1457] | 174 | CALL iom_put( "PH", zw3d ) |
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[1678] | 175 | zw3d(:,:,:) = zco3(:,:,:) * tmask(:,:,:) |
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[1457] | 176 | CALL iom_put( "CO3", zw3d ) |
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[1678] | 177 | zw3d(:,:,:) = aksp(:,:,:) / calcon * tmask(:,:,:) |
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[1457] | 178 | CALL iom_put( "CO3sat", zw3d ) |
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[1678] | 179 | zw3d(:,:,:) = zcaldiss(:,:,:) * zrfact2 * tmask(:,:,:) |
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| 180 | CALL iom_put( "Dcal", zw3d ) |
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[1457] | 181 | # endif |
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[935] | 182 | # endif |
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| 183 | ! |
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| 184 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 185 | WRITE(charout, FMT="('lys ')") |
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| 186 | CALL prt_ctl_trc_info(charout) |
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| 187 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 188 | ENDIF |
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| 189 | |
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| 190 | END SUBROUTINE p4z_lys |
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| 191 | |
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| 192 | SUBROUTINE p4z_lys_init |
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| 193 | |
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| 194 | !!---------------------------------------------------------------------- |
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| 195 | !! *** ROUTINE p4z_lys_init *** |
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| 196 | !! |
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| 197 | !! ** Purpose : Initialization of CaCO3 dissolution parameters |
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| 198 | !! |
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[1119] | 199 | !! ** Method : Read the nampiscal namelist and check the parameters |
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[935] | 200 | !! called at the first timestep (nittrc000) |
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| 201 | !! |
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[1119] | 202 | !! ** input : Namelist nampiscal |
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[935] | 203 | !! |
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| 204 | !!---------------------------------------------------------------------- |
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| 205 | |
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[1119] | 206 | NAMELIST/nampiscal/ kdca, nca |
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[935] | 207 | |
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| 208 | REWIND( numnat ) ! read numnat |
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[1119] | 209 | READ ( numnat, nampiscal ) |
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[935] | 210 | |
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| 211 | IF(lwp) THEN ! control print |
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| 212 | WRITE(numout,*) ' ' |
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[1119] | 213 | WRITE(numout,*) ' Namelist parameters for CaCO3 dissolution, nampiscal' |
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[935] | 214 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 215 | WRITE(numout,*) ' diss. rate constant calcite (per month) kdca =', kdca |
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| 216 | WRITE(numout,*) ' order of reaction for calcite dissolution nca =', nca |
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| 217 | ENDIF |
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| 218 | |
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[1735] | 219 | ! Number of seconds per month |
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| 220 | rmtss = nyear_len(1) * rday / raamo |
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| 221 | |
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[935] | 222 | END SUBROUTINE p4z_lys_init |
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| 223 | |
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| 224 | #else |
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| 225 | !!====================================================================== |
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| 226 | !! Dummy module : No PISCES bio-model |
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| 227 | !!====================================================================== |
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| 228 | CONTAINS |
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| 229 | SUBROUTINE p4z_lys( kt ) ! Empty routine |
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| 230 | INTEGER, INTENT( in ) :: kt |
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| 231 | WRITE(*,*) 'p4z_lys: You should not have seen this print! error?', kt |
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| 232 | END SUBROUTINE p4z_lys |
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| 233 | #endif |
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| 234 | |
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| 235 | !!====================================================================== |
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| 236 | END MODULE p4zlys |
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