| 1 | MODULE p4zflx |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p4zflx *** |
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| 4 | !! TOP : PISCES CALCULATES GAS EXCHANGE AND CHEMISTRY AT SEA SURFACE |
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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 | !! ! 2011-02 (J. Simeon, J. Orr) Include total atm P correction |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | #if defined key_pisces |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | !! 'key_pisces' PISCES bio-model |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | !! p4z_flx : CALCULATES GAS EXCHANGE AND CHEMISTRY AT SEA SURFACE |
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| 18 | !! p4z_flx_init : Read the namelist |
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| 19 | !! p4z_patm : Read sfc atm pressure [atm] for each grid cell |
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| 20 | !!---------------------------------------------------------------------- |
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| 21 | USE oce_trc ! shared variables between ocean and passive tracers |
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| 22 | USE trc ! passive tracers common variables |
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| 23 | USE sms_pisces ! PISCES Source Minus Sink variables |
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| 24 | USE p4zche ! Chemical model |
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| 25 | USE prtctl_trc ! print control for debugging |
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| 26 | USE iom ! I/O manager |
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| 27 | USE fldread ! read input fields |
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| 28 | #if defined key_cpl_carbon_cycle |
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| 29 | USE sbc_oce, ONLY : atm_co2 ! atmospheric pCO2 |
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| 30 | #endif |
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| 31 | |
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| 32 | IMPLICIT NONE |
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| 33 | PRIVATE |
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| 34 | |
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| 35 | PUBLIC p4z_flx |
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| 36 | PUBLIC p4z_flx_init |
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| 37 | PUBLIC p4z_flx_alloc |
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| 38 | |
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| 39 | ! !!** Namelist nampisext ** |
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| 40 | REAL(wp) :: atcco2 !: pre-industrial atmospheric [co2] (ppm) |
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| 41 | #ifdef key_c13 |
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| 42 | REAL(wp) :: d13c_co2 !: d13c of atmospheric [co2] (ppm) |
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| 43 | #endif |
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| 44 | LOGICAL :: ln_co2int !: flag to read in a file and interpolate atmospheric pco2 or not |
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| 45 | CHARACTER(len=34) :: clname !: filename of pco2 values |
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| 46 | INTEGER :: nn_offset !: Offset model-data start year (default = 0) |
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| 47 | |
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| 48 | !! Variables related to reading atmospheric CO2 time history |
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| 49 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: atcco2h, years |
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| 50 | INTEGER :: nmaxrec, numco2 |
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| 51 | |
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| 52 | ! !!* nampisatm namelist (Atmospheric PRessure) * |
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| 53 | LOGICAL, PUBLIC :: ln_presatm !: ref. pressure: global mean Patm (F) or a constant (F) |
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| 54 | |
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| 55 | REAL(wp) , ALLOCATABLE, SAVE, DIMENSION(:,:) :: patm ! atmospheric pressure at kt [N/m2] |
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| 56 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_patm ! structure of input fields (file informations, fields read) |
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| 57 | |
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| 58 | |
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| 59 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: oce_co2 !: ocean carbon flux |
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| 60 | #if defined key_c13 |
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| 61 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: oce_c13 !: ocean C13 flux |
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| 62 | #endif |
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| 63 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: satmco2 !: atmospheric pco2 |
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| 64 | |
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| 65 | REAL(wp) :: xconv = 0.01_wp / 3600._wp !: coefficients for conversion |
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| 66 | |
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| 67 | !!* Substitution |
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| 68 | # include "top_substitute.h90" |
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| 69 | !!---------------------------------------------------------------------- |
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| 70 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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| 71 | !! $Id$ |
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| 72 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 73 | !!---------------------------------------------------------------------- |
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| 74 | CONTAINS |
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| 75 | |
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| 76 | SUBROUTINE p4z_flx ( kt, knt ) |
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| 77 | !!--------------------------------------------------------------------- |
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| 78 | !! *** ROUTINE p4z_flx *** |
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| 79 | !! |
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| 80 | !! ** Purpose : CALCULATES GAS EXCHANGE AND CHEMISTRY AT SEA SURFACE |
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| 81 | !! |
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| 82 | !! ** Method : |
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| 83 | !! - Include total atm P correction via Esbensen & Kushnir (1981) |
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| 84 | !! - Pressure correction NOT done for key_cpl_carbon_cycle |
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| 85 | !! - Remove Wanninkhof chemical enhancement; |
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| 86 | !! - Add option for time-interpolation of atcco2.txt |
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| 87 | !!--------------------------------------------------------------------- |
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| 88 | ! |
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| 89 | INTEGER, INTENT(in) :: kt, knt ! |
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| 90 | ! |
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| 91 | INTEGER :: ji, jj, jm, iind, iindm1 |
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| 92 | REAL(wp) :: ztc, ztc2, ztc3, zws, zkgwan |
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| 93 | REAL(wp) :: zfld, zflu, zfld16, zflu16, zfact |
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| 94 | REAL(wp) :: zph, zah2, zbot, zdic, zalk, zsch_o2, zalka, zsch_co2 |
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| 95 | REAL(wp) :: zyr_dec, zdco2dt |
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| 96 | CHARACTER (len=25) :: charout |
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| 97 | REAL(wp), POINTER, DIMENSION(:,:) :: zkgco2, zkgo2, zh2co3, z_co3, zoflx, zw2d |
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| 98 | #ifdef key_c13 |
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| 99 | REAL(wp) :: zft, zfco3 |
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| 100 | REAL(wp), POINTER, DIMENSION(:,:) :: za_dic, za_g |
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| 101 | #endif |
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| 102 | !!--------------------------------------------------------------------- |
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| 103 | ! |
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| 104 | IF( nn_timing == 1 ) CALL timing_start('p4z_flx') |
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| 105 | ! |
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| 106 | #ifdef key_c13 |
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| 107 | CALL wrk_alloc( jpi, jpj, zkgco2, zkgo2, zh2co3, z_co3, zoflx, za_dic, za_g ) |
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| 108 | #else |
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| 109 | CALL wrk_alloc( jpi, jpj, zkgco2, zkgo2, zh2co3, z_co3, zoflx ) |
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| 110 | #endif |
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| 111 | ! |
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| 112 | |
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| 113 | ! SURFACE CHEMISTRY (PCO2 AND [H+] IN |
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| 114 | ! SURFACE LAYER); THE RESULT OF THIS CALCULATION |
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| 115 | ! IS USED TO COMPUTE AIR-SEA FLUX OF CO2 |
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| 116 | |
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| 117 | IF( kt /= nit000 .AND. knt == 1 ) CALL p4z_patm( kt ) ! Get sea-level pressure (E&K [1981] climatology) for use in flux calcs |
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| 118 | |
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| 119 | IF( ln_co2int ) THEN |
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| 120 | ! Linear temporal interpolation of atmospheric pco2. atcco2.txt has annual values. |
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| 121 | ! Caveats: First column of .txt must be in years, decimal years preferably. |
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| 122 | ! For nn_offset, if your model year is iyy, nn_offset=(years(1)-iyy) |
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| 123 | ! then the first atmospheric CO2 record read is at years(1) |
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| 124 | zyr_dec = REAL( nyear + nn_offset, wp ) + REAL( nday_year, wp ) / REAL( nyear_len(1), wp ) |
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| 125 | jm = 1 |
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| 126 | DO WHILE( jm <= nmaxrec .AND. years(jm) < zyr_dec ) ; jm = jm + 1 ; END DO |
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| 127 | iind = jm ; iindm1 = jm - 1 |
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| 128 | zdco2dt = ( atcco2h(iind) - atcco2h(iindm1) ) / ( years(iind) - years(iindm1) + rtrn ) |
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| 129 | atcco2 = zdco2dt * ( zyr_dec - years(iindm1) ) + atcco2h(iindm1) |
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| 130 | satmco2(:,:) = atcco2 |
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| 131 | ENDIF |
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| 132 | |
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| 133 | #if defined key_cpl_carbon_cycle |
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| 134 | satmco2(:,:) = atm_co2(:,:) |
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| 135 | #endif |
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| 136 | |
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| 137 | DO jm = 1, 10 |
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| 138 | !CDIR NOVERRCHK |
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| 139 | DO jj = 1, jpj |
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| 140 | !CDIR NOVERRCHK |
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| 141 | DO ji = 1, jpi |
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| 142 | |
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| 143 | ! DUMMY VARIABLES FOR DIC, H+, AND BORATE |
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| 144 | zbot = borat(ji,jj,1) |
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| 145 | zfact = rhop(ji,jj,1) / 1000. + rtrn |
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| 146 | zdic = trb(ji,jj,1,jpdic) / zfact |
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| 147 | zph = MAX( hi(ji,jj,1), 1.e-10 ) / zfact |
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| 148 | zalka = trb(ji,jj,1,jptal) / zfact |
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| 149 | |
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| 150 | ! CALCULATE [ALK]([CO3--], [HCO3-]) |
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| 151 | zalk = zalka - ( akw3(ji,jj,1) / zph - zph + zbot / ( 1.+ zph / akb3(ji,jj,1) ) ) |
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| 152 | |
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| 153 | ! CALCULATE [ALK]([CO3--], [HCO3-]) |
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| 154 | zalk = zalka - ( akw3(ji,jj,1) / zph - zph / aphscale(ji,jj,1) & |
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| 155 | & + zbot / ( 1.+ zph / akb3(ji,jj,1) ) ) |
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| 156 | |
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| 157 | ! CALCULATE [H+] AND [H2CO3] |
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| 158 | zah2 = SQRT( (zdic-zalk)**2 + 4.* ( zalk * ak23(ji,jj,1) & |
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| 159 | & / ak13(ji,jj,1) ) * ( 2.* zdic - zalk ) ) |
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| 160 | zah2 = 0.5 * ak13(ji,jj,1) / zalk * ( ( zdic - zalk ) + zah2 ) |
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| 161 | zh2co3(ji,jj) = ( 2.* zdic - zalk ) / ( 2.+ ak13(ji,jj,1) / zah2 ) * zfact |
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| 162 | hi(ji,jj,1) = zah2 * zfact |
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| 163 | END DO |
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| 164 | END DO |
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| 165 | END DO |
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| 166 | |
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| 167 | |
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| 168 | ! -------------- |
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| 169 | ! COMPUTE FLUXES |
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| 170 | ! -------------- |
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| 171 | |
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| 172 | ! FIRST COMPUTE GAS EXCHANGE COEFFICIENTS |
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| 173 | ! ------------------------------------------- |
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| 174 | |
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| 175 | !CDIR NOVERRCHK |
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| 176 | DO jj = 1, jpj |
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| 177 | !CDIR NOVERRCHK |
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| 178 | DO ji = 1, jpi |
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| 179 | ztc = MIN( 35., tsn(ji,jj,1,jp_tem) ) |
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| 180 | ztc2 = ztc * ztc |
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| 181 | ztc3 = ztc * ztc2 |
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| 182 | ztc4 = ztc2 * ztc2 |
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| 183 | ! Compute the schmidt Number both O2 and CO2 |
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| 184 | zsch_co2 = 2116.8 - 136.25 * ztc + 4.7353 * ztc2 - 0.092307 * ztc3 + 0.0007555 * ztc4 |
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| 185 | zsch_o2 = 1920.4 - 135.6 * ztc + 5.2122 * ztc2 - 0.109390 * ztc3 + 0.0009377 * ztc4 |
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| 186 | ! wind speed |
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| 187 | zws = wndm(ji,jj) * wndm(ji,jj) |
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| 188 | ! Compute the piston velocity for O2 and CO2 |
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| 189 | zkgwan = 0.251 * zws |
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| 190 | zkgwan = zkgwan * xconv * ( 1.- fr_i(ji,jj) ) * tmask(ji,jj,1) |
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| 191 | # if defined key_degrad |
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| 192 | zkgwan = zkgwan * facvol(ji,jj,1) |
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| 193 | #endif |
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| 194 | ! compute gas exchange for CO2 and O2 |
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| 195 | zkgco2(ji,jj) = zkgwan * SQRT( 660./ zsch_co2 ) |
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| 196 | zkgo2 (ji,jj) = zkgwan * SQRT( 660./ zsch_o2 ) |
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| 197 | #if defined key_c13 |
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| 198 | ! Compute fractionation factors for C13 from Zhang et al. 1995 |
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| 199 | zfco3 = MAX(0.05,(z_co3(ji,jj)/trb(ji,jj,1,jpdic)+rtrn)) |
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| 200 | zfco3 = MIN(0.2 , zfco3) |
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| 201 | zft = MIN( 25., ztc ) |
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| 202 | zft = MAX( 5., zft ) |
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| 203 | za_g (ji,jj) = 1. + ( -0.0049 * zft - 1.31 ) / 1000. |
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| 204 | za_dic(ji,jj) = 1. + ( 0.014 * zft * zfco3 - 0.105 * zft + 10.53 ) / 1000. |
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| 205 | #endif |
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| 206 | END DO |
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| 207 | END DO |
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| 208 | |
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| 209 | DO jj = 1, jpj |
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| 210 | DO ji = 1, jpi |
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| 211 | ! Compute CO2 flux for the sea and air |
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| 212 | zfld = satmco2(ji,jj) * patm(ji,jj) * tmask(ji,jj,1) * chemc(ji,jj) * zkgco2(ji,jj) ! (mol/L) * (m/s) |
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| 213 | zflu = zh2co3(ji,jj) * tmask(ji,jj,1) * zkgco2(ji,jj) ! (mol/L) (m/s) ? |
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| 214 | oce_co2(ji,jj) = ( zfld - zflu ) * rfact2 * e1e2t(ji,jj) * tmask(ji,jj,1) * 1000. |
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| 215 | ! compute the trend |
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| 216 | tra(ji,jj,1,jpdic) = tra(ji,jj,1,jpdic) + ( zfld - zflu ) * rfact2 / fse3t(ji,jj,1) |
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| 217 | |
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| 218 | ! Compute O2 flux |
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| 219 | zfld16 = patm(ji,jj) * chemo2(ji,jj,1) * tmask(ji,jj,1) * zkgo2(ji,jj) ! (mol/L) * (m/s) |
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| 220 | zflu16 = trb(ji,jj,1,jpoxy) * tmask(ji,jj,1) * zkgo2(ji,jj) |
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| 221 | zoflx(ji,jj) = zfld16 - zflu16 |
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| 222 | tra(ji,jj,1,jpoxy) = tra(ji,jj,1,jpoxy) + zoflx(ji,jj) * rfact2 / fse3t(ji,jj,1) |
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| 223 | #if defined key_c13 |
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| 224 | tra(ji,jj,1,jp13dic) = tra(ji,jj,1,jp13dic) + ( zfld * (1 + d13c_co2 / 1000.) & |
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| 225 | - zflu * trb(ji,jj,1,jp13dic) / ( trb(ji,jj,1,jpdic) + rtrn ) & |
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| 226 | / ( za_dic(ji,jj) + rtrn) ) & |
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| 227 | * 0.99919 * za_g(ji,jj) * rfact2 / fse3t(ji,jj,1) |
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| 228 | |
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| 229 | oce_c13(ji,jj) = ( zfld * (1 + d13c_co2 / 1000.) & |
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| 230 | - zflu * trb(ji,jj,1,jp13dic) / ( trb(ji,jj,1,jpdic) + rtrn ) & |
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| 231 | / ( za_dic(ji,jj) + rtrn) ) & |
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| 232 | * 0.99919 * za_g(ji,jj) * rfact2 * e1e2t(ji,jj) * tmask(ji,jj,1) * 1000. |
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| 233 | #endif |
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| 234 | END DO |
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| 235 | END DO |
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| 236 | |
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| 237 | t_oce_co2_flx = glob_sum( oce_co2(:,:) ) ! Total Flux of Carbon |
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| 238 | t_oce_co2_flx_cum = t_oce_co2_flx_cum + t_oce_co2_flx ! Cumulative Total Flux of Carbon |
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| 239 | ! t_atm_co2_flx = glob_sum( satmco2(:,:) * e1e2t(:,:) ) ! Total atmospheric pCO2 |
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| 240 | t_atm_co2_flx = atcco2 ! Total atmospheric pCO2 |
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| 241 | |
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| 242 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 243 | WRITE(charout, FMT="('flx ')") |
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| 244 | CALL prt_ctl_trc_info(charout) |
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| 245 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 246 | ENDIF |
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| 247 | |
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| 248 | IF( lk_iomput .AND. knt == nrdttrc ) THEN |
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| 249 | CALL wrk_alloc( jpi, jpj, zw2d ) |
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| 250 | IF( iom_use( "Cflx" ) ) THEN |
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| 251 | zw2d(:,:) = oce_co2(:,:) / e1e2t(:,:) * rfact2r |
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| 252 | CALL iom_put( "Cflx" , zw2d ) |
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| 253 | ENDIF |
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| 254 | #if defined key_c13 |
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| 255 | CALL wrk_alloc( jpi, jpj, zw2d ) |
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| 256 | IF( iom_use( "C13flx" ) ) THEN |
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| 257 | zw2d(:,:) = oce_c13(:,:) / e1e2t(:,:) * rfact2r |
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| 258 | CALL iom_put( "C13flx" , zw2d ) |
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| 259 | ENDIF |
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| 260 | #endif |
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| 261 | IF( iom_use( "Oflx" ) ) THEN |
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| 262 | zw2d(:,:) = zoflx(:,:) * 1000 * tmask(:,:,1) |
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| 263 | CALL iom_put( "Oflx" , zw2d ) |
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| 264 | ENDIF |
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| 265 | IF( iom_use( "Kg" ) ) THEN |
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| 266 | zw2d(:,:) = zkgco2(:,:) * tmask(:,:,1) |
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| 267 | CALL iom_put( "Kg" , zw2d ) |
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| 268 | ENDIF |
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| 269 | IF( iom_use( "Dpco2" ) ) THEN |
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| 270 | zw2d(:,:) = ( satmco2(:,:) * patm(:,:) - zh2co3(:,:) / ( chemc(:,:,1) + rtrn ) ) * tmask(:,:,1) |
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| 271 | CALL iom_put( "Dpco2" , zw2d ) |
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| 272 | ENDIF |
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| 273 | IF( iom_use( "Dpo2" ) ) THEN |
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| 274 | zw2d(:,:) = ( atcox * patm(:,:) - trb(:,:,1,jpoxy) / ( chemc(:,:,2) + rtrn ) ) * tmask(:,:,1) |
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| 275 | CALL iom_put( "Dpo2" , zw2d ) |
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| 276 | ENDIF |
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| 277 | IF( iom_use( "tcflx" ) ) CALL iom_put( "tcflx" , t_oce_co2_flx * rfact2r ) ! molC/s |
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| 278 | CALL iom_put( "tcflxcum" , t_oce_co2_flx_cum ) ! molC |
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| 279 | ! |
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| 280 | CALL wrk_dealloc( jpi, jpj, zw2d ) |
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| 281 | ELSE |
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| 282 | IF( ln_diatrc ) THEN |
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| 283 | trc2d(:,:,jp_pcs0_2d ) = oce_co2(:,:) / e1e2t(:,:) * rfact2r |
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| 284 | trc2d(:,:,jp_pcs0_2d + 1) = zoflx(:,:) * 1000 * tmask(:,:,1) |
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| 285 | trc2d(:,:,jp_pcs0_2d + 2) = zkgco2(:,:) * tmask(:,:,1) |
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| 286 | trc2d(:,:,jp_pcs0_2d + 3) = ( satmco2(:,:) * patm(:,:) - zh2co3(:,:) / ( chemc(:,:,1) + rtrn ) ) * tmask(:,:,1) |
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| 287 | ENDIF |
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| 288 | ENDIF |
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| 289 | ! |
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| 290 | #ifdef key_c13 |
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| 291 | CALL wrk_dealloc( jpi, jpj, zkgco2, zkgo2, zh2co3, z_co3, zoflx, za_dic, za_g ) |
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| 292 | #else |
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| 293 | CALL wrk_dealloc( jpi, jpj, zkgco2, zkgo2, zh2co3, z_co3, zoflx ) |
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| 294 | #endif |
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| 295 | ! |
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| 296 | IF( nn_timing == 1 ) CALL timing_stop('p4z_flx') |
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| 297 | ! |
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| 298 | END SUBROUTINE p4z_flx |
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| 299 | |
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| 300 | |
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| 301 | SUBROUTINE p4z_flx_init |
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| 302 | !!---------------------------------------------------------------------- |
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| 303 | !! *** ROUTINE p4z_flx_init *** |
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| 304 | !! |
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| 305 | !! ** Purpose : Initialization of atmospheric conditions |
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| 306 | !! |
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| 307 | !! ** Method : Read the nampisext namelist and check the parameters |
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| 308 | !! called at the first timestep (nittrc000) |
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| 309 | !! ** input : Namelist nampisext |
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| 310 | !!---------------------------------------------------------------------- |
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| 311 | NAMELIST/nampisext/ln_co2int, atcco2, & |
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| 312 | #if defined key_c13 |
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| 313 | & d13c_co2, & |
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| 314 | #endif |
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| 315 | & clname, nn_offset |
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| 316 | INTEGER :: jm |
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| 317 | INTEGER :: ios ! Local integer output status for namelist read |
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| 318 | !!---------------------------------------------------------------------- |
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| 319 | ! |
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| 320 | |
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| 321 | REWIND( numnatp_ref ) ! Namelist nampisext in reference namelist : Pisces atm. conditions |
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| 322 | READ ( numnatp_ref, nampisext, IOSTAT = ios, ERR = 901) |
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| 323 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisext in reference namelist', lwp ) |
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| 324 | |
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| 325 | REWIND( numnatp_cfg ) ! Namelist nampisext in configuration namelist : Pisces atm. conditions |
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| 326 | READ ( numnatp_cfg, nampisext, IOSTAT = ios, ERR = 902 ) |
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| 327 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisext in configuration namelist', lwp ) |
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| 328 | IF(lwm) WRITE ( numonp, nampisext ) |
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| 329 | ! |
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| 330 | IF(lwp) THEN ! control print |
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| 331 | WRITE(numout,*) ' ' |
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| 332 | WRITE(numout,*) ' Namelist parameters for air-sea exchange, nampisext' |
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| 333 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 334 | WRITE(numout,*) ' Choice for reading in the atm pCO2 file or constant value, ln_co2int =', ln_co2int |
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| 335 | WRITE(numout,*) ' ' |
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| 336 | ENDIF |
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| 337 | IF( .NOT.ln_co2int ) THEN |
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| 338 | IF(lwp) THEN ! control print |
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| 339 | WRITE(numout,*) ' Constant Atmospheric pCO2 value atcco2 =', atcco2 |
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| 340 | #if defined key_c13 |
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| 341 | WRITE(numout,*) ' Constant Atm. d13C of pCO2 value d13c_co2 =', d13c_co2 |
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| 342 | #endif |
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| 343 | WRITE(numout,*) ' ' |
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| 344 | ENDIF |
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| 345 | satmco2(:,:) = atcco2 ! Initialisation of atmospheric pco2 |
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| 346 | ELSE |
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| 347 | IF(lwp) THEN |
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| 348 | WRITE(numout,*) ' Atmospheric pCO2 value from file clname =', TRIM( clname ) |
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| 349 | WRITE(numout,*) ' Offset model-data start year nn_offset =', nn_offset |
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| 350 | WRITE(numout,*) ' ' |
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| 351 | ENDIF |
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| 352 | CALL ctl_opn( numco2, TRIM( clname) , 'OLD', 'FORMATTED', 'SEQUENTIAL', -1 , numout, lwp ) |
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| 353 | jm = 0 ! Count the number of record in co2 file |
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| 354 | DO |
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| 355 | READ(numco2,*,END=100) |
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| 356 | jm = jm + 1 |
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| 357 | END DO |
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| 358 | 100 nmaxrec = jm - 1 |
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| 359 | ALLOCATE( years (nmaxrec) ) ; years (:) = 0._wp |
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| 360 | ALLOCATE( atcco2h(nmaxrec) ) ; atcco2h(:) = 0._wp |
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| 361 | |
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| 362 | REWIND(numco2) |
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| 363 | DO jm = 1, nmaxrec ! get xCO2 data |
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| 364 | READ(numco2, *) years(jm), atcco2h(jm) |
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| 365 | IF(lwp) WRITE(numout, '(f6.0,f7.2)') years(jm), atcco2h(jm) |
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| 366 | END DO |
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| 367 | CLOSE(numco2) |
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| 368 | ENDIF |
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| 369 | ! |
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| 370 | oce_co2(:,:) = 0._wp ! Initialization of Flux of Carbon |
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| 371 | t_oce_co2_flx = 0._wp |
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| 372 | t_atm_co2_flx = 0._wp |
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| 373 | #ifdef key_c13 |
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| 374 | oce_c13(:,:) = 0._wp |
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| 375 | #endif |
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| 376 | ! |
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| 377 | CALL p4z_patm( nit000 ) |
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| 378 | ! |
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| 379 | END SUBROUTINE p4z_flx_init |
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| 380 | |
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| 381 | SUBROUTINE p4z_patm( kt ) |
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| 382 | |
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| 383 | !!---------------------------------------------------------------------- |
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| 384 | !! *** ROUTINE p4z_atm *** |
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| 385 | !! |
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| 386 | !! ** Purpose : Read and interpolate the external atmospheric sea-levl pressure |
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| 387 | !! ** Method : Read the files and interpolate the appropriate variables |
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| 388 | !! |
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| 389 | !!---------------------------------------------------------------------- |
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| 390 | !! * arguments |
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| 391 | INTEGER, INTENT( in ) :: kt ! ocean time step |
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| 392 | ! |
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| 393 | INTEGER :: ierr |
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| 394 | INTEGER :: ios ! Local integer output status for namelist read |
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| 395 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
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| 396 | TYPE(FLD_N) :: sn_patm ! informations about the fields to be read |
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| 397 | !! |
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| 398 | NAMELIST/nampisatm/ ln_presatm, sn_patm, cn_dir |
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| 399 | |
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| 400 | ! ! ----------------------- ! |
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| 401 | IF( kt == nit000 ) THEN ! First call kt=nittrc000 ! |
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| 402 | |
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| 403 | REWIND( numnatp_ref ) ! Namelist nampisatm in reference namelist : Pisces atm. sea level pressure file |
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| 404 | READ ( numnatp_ref, nampisatm, IOSTAT = ios, ERR = 901) |
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| 405 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisatm in reference namelist', lwp ) |
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| 406 | |
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| 407 | REWIND( numnatp_cfg ) ! Namelist nampisatm in configuration namelist : Pisces atm. sea level pressure file |
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| 408 | READ ( numnatp_cfg, nampisatm, IOSTAT = ios, ERR = 902 ) |
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| 409 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisatm in configuration namelist', lwp ) |
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| 410 | IF(lwm) WRITE ( numonp, nampisatm ) |
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| 411 | ! |
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| 412 | ! |
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| 413 | IF(lwp) THEN !* control print |
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| 414 | WRITE(numout,*) |
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| 415 | WRITE(numout,*) ' Namelist nampisatm : Atmospheric Pressure as external forcing' |
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| 416 | WRITE(numout,*) ' constant atmopsheric pressure (F) or from a file (T) ln_presatm = ', ln_presatm |
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| 417 | WRITE(numout,*) |
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| 418 | ENDIF |
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| 419 | ! |
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| 420 | IF( ln_presatm ) THEN |
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| 421 | ALLOCATE( sf_patm(1), STAT=ierr ) !* allocate and fill sf_patm (forcing structure) with sn_patm |
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| 422 | IF( ierr > 0 ) CALL ctl_stop( 'STOP', 'p4z_flx: unable to allocate sf_patm structure' ) |
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| 423 | ! |
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| 424 | CALL fld_fill( sf_patm, (/ sn_patm /), cn_dir, 'p4z_flx', 'Atmospheric pressure ', 'nampisatm' ) |
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| 425 | ALLOCATE( sf_patm(1)%fnow(jpi,jpj,1) ) |
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| 426 | IF( sn_patm%ln_tint ) ALLOCATE( sf_patm(1)%fdta(jpi,jpj,1,2) ) |
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| 427 | ENDIF |
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| 428 | ! |
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| 429 | IF( .NOT.ln_presatm ) patm(:,:) = 1.e0 ! Initialize patm if no reading from a file |
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| 430 | ! |
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| 431 | ENDIF |
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| 432 | ! |
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| 433 | IF( ln_presatm ) THEN |
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| 434 | CALL fld_read( kt, 1, sf_patm ) !* input Patm provided at kt + 1/2 |
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| 435 | patm(:,:) = sf_patm(1)%fnow(:,:,1) ! atmospheric pressure |
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| 436 | ENDIF |
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| 437 | ! |
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| 438 | END SUBROUTINE p4z_patm |
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| 439 | |
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| 440 | INTEGER FUNCTION p4z_flx_alloc() |
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| 441 | !!---------------------------------------------------------------------- |
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| 442 | !! *** ROUTINE p4z_flx_alloc *** |
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| 443 | !!---------------------------------------------------------------------- |
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| 444 | ALLOCATE( oce_co2(jpi,jpj), satmco2(jpi,jpj), patm(jpi,jpj), oce_c13(jpi,jpj), STAT=p4z_flx_alloc ) |
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| 445 | ! |
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| 446 | IF( p4z_flx_alloc /= 0 ) CALL ctl_warn('p4z_flx_alloc : failed to allocate arrays') |
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| 447 | ! |
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| 448 | END FUNCTION p4z_flx_alloc |
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| 449 | |
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| 450 | #else |
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| 451 | !!====================================================================== |
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| 452 | !! Dummy module : No PISCES bio-model |
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| 453 | !!====================================================================== |
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| 454 | CONTAINS |
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| 455 | SUBROUTINE p4z_flx( kt ) ! Empty routine |
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| 456 | INTEGER, INTENT( in ) :: kt |
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| 457 | WRITE(*,*) 'p4z_flx: You should not have seen this print! error?', kt |
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| 458 | END SUBROUTINE p4z_flx |
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| 459 | #endif |
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| 460 | |
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| 461 | !!====================================================================== |
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| 462 | END MODULE p4zflx |
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