| 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 | !! 4.2 ! 2020 (J. ORR ) rhop is replaced by "in situ density" rhd |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! p4z_flx : CALCULATES GAS EXCHANGE AND CHEMISTRY AT SEA SURFACE |
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| 15 | !! p4z_flx_init : Read the namelist |
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| 16 | !! p4z_patm : Read sfc atm pressure [atm] for each grid cell |
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| 17 | !!---------------------------------------------------------------------- |
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| 18 | USE oce_trc ! shared variables between ocean and passive tracers |
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| 19 | USE trc ! passive tracers common variables |
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| 20 | USE sms_pisces ! PISCES Source Minus Sink variables |
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| 21 | USE p4zche ! Chemical model |
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| 22 | USE prtctl ! print control for debugging |
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| 23 | USE iom ! I/O manager |
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| 24 | USE fldread ! read input fields |
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| 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_flx |
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| 30 | PUBLIC p4z_flx_init |
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| 31 | PUBLIC p4z_flx_alloc |
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| 32 | |
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| 33 | ! !!** Namelist nampisext ** |
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| 34 | REAL(wp) :: atcco2 !: pre-industrial atmospheric [co2] (ppm) |
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| 35 | LOGICAL :: ln_co2int !: flag to read in a file and interpolate atmospheric pco2 or not |
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| 36 | CHARACTER(len=34) :: clname !: filename of pco2 values |
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| 37 | INTEGER :: nn_offset !: Offset model-data start year (default = 0) |
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| 38 | |
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| 39 | !! Variables related to reading atmospheric CO2 time history |
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| 40 | INTEGER :: nmaxrec, numco2 ! |
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| 41 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: atcco2h, years ! |
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| 42 | |
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| 43 | ! !!* nampisatm namelist (Atmospheric PRessure) * |
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| 44 | LOGICAL, PUBLIC :: ln_presatm !: ref. pressure: global mean Patm (F) or a constant (F) |
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| 45 | LOGICAL, PUBLIC :: ln_presatmco2 !: accounting for spatial atm CO2 in the compuation of carbon flux (T) or not (F) |
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| 46 | |
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| 47 | REAL(wp) , ALLOCATABLE, SAVE, DIMENSION(:,:) :: patm ! atmospheric pressure at kt [N/m2] |
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| 48 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_patm ! structure of input fields (file informations, fields read) |
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| 49 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_atmco2 ! structure of input fields (file informations, fields read) |
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| 50 | |
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| 51 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: satmco2 !: atmospheric pco2 |
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| 52 | |
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| 53 | REAL(wp) :: xconv = 0.01_wp / 3600._wp !: coefficients for conversion |
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| 54 | |
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| 55 | !! * Substitutions |
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| 56 | # include "do_loop_substitute.h90" |
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| 57 | # include "domzgr_substitute.h90" |
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| 58 | !!---------------------------------------------------------------------- |
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| 59 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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| 60 | !! $Id$ |
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| 61 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 62 | !!---------------------------------------------------------------------- |
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| 63 | CONTAINS |
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| 64 | |
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| 65 | SUBROUTINE p4z_flx ( kt, knt, Kbb, Kmm, Krhs ) |
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| 66 | !!--------------------------------------------------------------------- |
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| 67 | !! *** ROUTINE p4z_flx *** |
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| 68 | !! |
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| 69 | !! ** Purpose : CALCULATES GAS EXCHANGE AND CHEMISTRY AT SEA SURFACE |
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| 70 | !! |
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| 71 | !! ** Method : |
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| 72 | !! - Include total atm P correction via Esbensen & Kushnir (1981) |
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| 73 | !! - Remove Wanninkhof chemical enhancement; |
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| 74 | !! - Add option for time-interpolation of atcco2.txt |
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| 75 | !!--------------------------------------------------------------------- |
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| 76 | INTEGER, INTENT(in) :: kt, knt ! |
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| 77 | INTEGER, INTENT(in) :: Kbb, Kmm, Krhs ! time level indices |
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| 78 | ! |
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| 79 | INTEGER :: ji, jj, jm, iind, iindm1 |
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| 80 | REAL(wp) :: ztc, ztc2, ztc3, ztc4, zws, zkgwan |
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| 81 | REAL(wp) :: zfld, zflu, zfld16, zflu16, zrhd |
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| 82 | REAL(wp) :: zvapsw, zsal, zfco2, zxc2, xCO2approx, ztkel, zfugcoeff |
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| 83 | REAL(wp) :: zph, zdic, zsch_o2, zsch_co2 |
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| 84 | REAL(wp) :: zyr_dec, zdco2dt |
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| 85 | CHARACTER (len=25) :: charout |
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| 86 | REAL(wp), DIMENSION(jpi,jpj) :: zkgco2, zkgo2, zh2co3, zoflx, zpco2atm, zpco2oce |
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| 87 | !!--------------------------------------------------------------------- |
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| 88 | ! |
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| 89 | IF( ln_timing ) CALL timing_start('p4z_flx') |
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| 90 | ! |
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| 91 | ! SURFACE CHEMISTRY (PCO2 AND [H+] IN |
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| 92 | ! SURFACE LAYER); THE RESULT OF THIS CALCULATION |
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| 93 | ! IS USED TO COMPUTE AIR-SEA FLUX OF CO2 |
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| 94 | |
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| 95 | IF( kt /= nit000 .AND. .NOT.l_co2cpl .AND. knt == 1 ) CALL p4z_patm( kt ) ! Get sea-level pressure (E&K [1981] climatology) for use in flux calcs |
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| 96 | |
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| 97 | IF( ln_co2int .AND. .NOT.ln_presatmco2 .AND. .NOT.l_co2cpl ) THEN |
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| 98 | ! Linear temporal interpolation of atmospheric pco2. atcco2.txt has annual values. |
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| 99 | ! Caveats: First column of .txt must be in years, decimal years preferably. |
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| 100 | ! For nn_offset, if your model year is iyy, nn_offset=(years(1)-iyy) |
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| 101 | ! then the first atmospheric CO2 record read is at years(1) |
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| 102 | zyr_dec = REAL( nyear + nn_offset, wp ) + REAL( nday_year, wp ) / REAL( nyear_len(1), wp ) |
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| 103 | jm = 1 |
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| 104 | DO WHILE( jm <= nmaxrec .AND. years(jm) < zyr_dec ) ; jm = jm + 1 ; END DO |
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| 105 | iind = jm ; iindm1 = jm - 1 |
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| 106 | zdco2dt = ( atcco2h(iind) - atcco2h(iindm1) ) / ( years(iind) - years(iindm1) + rtrn ) |
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| 107 | atcco2 = zdco2dt * ( zyr_dec - years(iindm1) ) + atcco2h(iindm1) |
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| 108 | satmco2(:,:) = atcco2 |
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| 109 | ENDIF |
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| 110 | |
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| 111 | IF( l_co2cpl ) satmco2(:,:) = atm_co2(:,:) |
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| 112 | |
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| 113 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
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| 114 | ! DUMMY VARIABLES FOR DIC, H+, AND BORATE |
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| 115 | zrhd = rhd(ji,jj,1) + 1._wp |
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| 116 | zdic = tr(ji,jj,1,jpdic,Kbb) |
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| 117 | zph = MAX( hi(ji,jj,1), 1.e-10 ) / ( zrhd + rtrn ) |
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| 118 | ! CALCULATE [H2CO3] |
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| 119 | zh2co3(ji,jj) = zdic/(1. + ak13(ji,jj,1)/zph + ak13(ji,jj,1)*ak23(ji,jj,1)/zph**2) |
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| 120 | END_2D |
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| 121 | |
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| 122 | ! -------------- |
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| 123 | ! COMPUTE FLUXES |
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| 124 | ! -------------- |
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| 125 | |
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| 126 | ! FIRST COMPUTE GAS EXCHANGE COEFFICIENTS |
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| 127 | ! ------------------------------------------- |
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| 128 | |
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| 129 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
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| 130 | ztc = MIN( 35., ts(ji,jj,1,jp_tem,Kmm) ) |
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| 131 | ztc2 = ztc * ztc |
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| 132 | ztc3 = ztc * ztc2 |
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| 133 | ztc4 = ztc2 * ztc2 |
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| 134 | ! Compute the schmidt Number both O2 and CO2 |
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| 135 | zsch_co2 = 2116.8 - 136.25 * ztc + 4.7353 * ztc2 - 0.092307 * ztc3 + 0.0007555 * ztc4 |
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| 136 | zsch_o2 = 1920.4 - 135.6 * ztc + 5.2122 * ztc2 - 0.109390 * ztc3 + 0.0009377 * ztc4 |
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| 137 | ! wind speed |
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| 138 | zws = wndm(ji,jj) * wndm(ji,jj) |
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| 139 | ! Compute the piston velocity for O2 and CO2 |
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| 140 | zkgwan = 0.251 * zws |
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| 141 | zkgwan = zkgwan * xconv * ( 1.- fr_i(ji,jj) ) * tmask(ji,jj,1) |
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| 142 | ! compute gas exchange for CO2 and O2 |
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| 143 | zkgco2(ji,jj) = zkgwan * SQRT( 660./ zsch_co2 ) |
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| 144 | zkgo2 (ji,jj) = zkgwan * SQRT( 660./ zsch_o2 ) |
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| 145 | END_2D |
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| 146 | |
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| 147 | |
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| 148 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
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| 149 | ztkel = tempis(ji,jj,1) + 273.15 |
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| 150 | zsal = salinprac(ji,jj,1) + ( 1.- tmask(ji,jj,1) ) * 35. |
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| 151 | zvapsw = EXP(24.4543 - 67.4509*(100.0/ztkel) - 4.8489*LOG(ztkel/100) - 0.000544*zsal) |
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| 152 | zpco2atm(ji,jj) = satmco2(ji,jj) * ( patm(ji,jj) - zvapsw ) |
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| 153 | zxc2 = ( 1.0 - zpco2atm(ji,jj) * 1E-6 )**2 |
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| 154 | zfugcoeff = EXP( patm(ji,jj) * (chemc(ji,jj,2) + 2.0 * zxc2 * chemc(ji,jj,3) ) & |
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| 155 | & / ( 82.05736 * ztkel )) |
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| 156 | zfco2 = zpco2atm(ji,jj) * zfugcoeff |
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| 157 | |
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| 158 | ! Compute CO2 flux for the sea and air |
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| 159 | zfld = zfco2 * chemc(ji,jj,1) * zkgco2(ji,jj) ! (mol/L) * (m/s) |
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| 160 | zflu = zh2co3(ji,jj) * zkgco2(ji,jj) ! (mol/L) (m/s) ? |
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| 161 | zpco2oce(ji,jj) = zh2co3(ji,jj) / ( chemc(ji,jj,1) * zfugcoeff + rtrn ) |
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| 162 | oce_co2(ji,jj) = ( zfld - zflu ) * tmask(ji,jj,1) |
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| 163 | ! compute the trend |
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| 164 | tr(ji,jj,1,jpdic,Krhs) = tr(ji,jj,1,jpdic,Krhs) + oce_co2(ji,jj) * rfact2 / e3t(ji,jj,1,Kmm) |
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| 165 | |
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| 166 | ! Compute O2 flux |
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| 167 | zfld16 = patm(ji,jj) * chemo2(ji,jj,1) * zkgo2(ji,jj) ! (mol/L) * (m/s) |
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| 168 | zflu16 = tr(ji,jj,1,jpoxy,Kbb) * zkgo2(ji,jj) |
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| 169 | zoflx(ji,jj) = ( zfld16 - zflu16 ) * tmask(ji,jj,1) |
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| 170 | tr(ji,jj,1,jpoxy,Krhs) = tr(ji,jj,1,jpoxy,Krhs) + zoflx(ji,jj) * rfact2 / e3t(ji,jj,1,Kmm) |
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| 171 | END_2D |
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| 172 | |
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| 173 | IF( iom_use("tcflx") .OR. iom_use("tcflxcum") .OR. kt == nitrst & |
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| 174 | & .OR. (ln_check_mass .AND. kt == nitend) ) & |
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| 175 | t_oce_co2_flx = glob_sum( 'p4zflx', oce_co2(:,:) * e1e2t(:,:) * 1000. ) ! Total Flux of Carbon |
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| 176 | t_oce_co2_flx_cum = t_oce_co2_flx_cum + t_oce_co2_flx ! Cumulative Total Flux of Carbon |
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| 177 | ! t_atm_co2_flx = glob_sum( 'p4zflx', satmco2(:,:) * e1e2t(:,:) ) ! Total atmospheric pCO2 |
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| 178 | t_atm_co2_flx = atcco2 ! Total atmospheric pCO2 |
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| 179 | |
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| 180 | IF(sn_cfctl%l_prttrc) THEN ! print mean trends (used for debugging) |
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| 181 | WRITE(charout, FMT="('flx ')") |
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| 182 | CALL prt_ctl_info( charout, cdcomp = 'top' ) |
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| 183 | CALL prt_ctl(tab4d_1=tr(:,:,:,:,Krhs), mask1=tmask, clinfo=ctrcnm) |
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| 184 | ENDIF |
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| 185 | |
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| 186 | IF( lk_iomput .AND. knt == nrdttrc ) THEN |
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| 187 | CALL iom_put( "AtmCo2" , satmco2(:,:) * tmask(:,:,1) ) ! Atmospheric CO2 concentration |
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| 188 | CALL iom_put( "Cflx" , oce_co2(:,:) * 1000. ) |
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| 189 | CALL iom_put( "Oflx" , zoflx(:,:) * 1000. ) |
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| 190 | CALL iom_put( "Kg" , zkgco2(:,:) * tmask(:,:,1) ) |
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| 191 | CALL iom_put( "Dpco2" , ( zpco2atm(:,:) - zpco2oce(:,:) ) * tmask(:,:,1) ) |
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| 192 | CALL iom_put( "pCO2sea" , zpco2oce(:,:) * tmask(:,:,1) ) |
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| 193 | CALL iom_put( "Dpo2" , ( atcox * patm(:,:) - atcox * tr(:,:,1,jpoxy,Kbb) / ( chemo2(:,:,1) + rtrn ) ) * tmask(:,:,1) ) |
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| 194 | CALL iom_put( "tcflx" , t_oce_co2_flx ) ! molC/s |
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| 195 | CALL iom_put( "tcflxcum", t_oce_co2_flx_cum ) ! molC |
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| 196 | ENDIF |
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| 197 | ! |
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| 198 | IF( ln_timing ) CALL timing_stop('p4z_flx') |
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| 199 | ! |
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| 200 | END SUBROUTINE p4z_flx |
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| 201 | |
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| 202 | |
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| 203 | SUBROUTINE p4z_flx_init |
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| 204 | !!---------------------------------------------------------------------- |
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| 205 | !! *** ROUTINE p4z_flx_init *** |
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| 206 | !! |
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| 207 | !! ** Purpose : Initialization of atmospheric conditions |
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| 208 | !! |
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| 209 | !! ** Method : Read the nampisext namelist and check the parameters |
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| 210 | !! called at the first timestep (nittrc000) |
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| 211 | !! |
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| 212 | !! ** input : Namelist nampisext |
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| 213 | !!---------------------------------------------------------------------- |
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| 214 | INTEGER :: jm, ios ! Local integer |
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| 215 | !! |
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| 216 | NAMELIST/nampisext/ln_co2int, atcco2, clname, nn_offset |
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| 217 | !!---------------------------------------------------------------------- |
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| 218 | IF(lwp) THEN |
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| 219 | WRITE(numout,*) |
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| 220 | WRITE(numout,*) ' p4z_flx_init : atmospheric conditions for air-sea flux calculation' |
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| 221 | WRITE(numout,*) ' ~~~~~~~~~~~~' |
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| 222 | ENDIF |
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| 223 | ! |
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| 224 | READ ( numnatp_ref, nampisext, IOSTAT = ios, ERR = 901) |
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| 225 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisext in reference namelist' ) |
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| 226 | READ ( numnatp_cfg, nampisext, IOSTAT = ios, ERR = 902 ) |
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| 227 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'nampisext in configuration namelist' ) |
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| 228 | IF(lwm) WRITE ( numonp, nampisext ) |
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| 229 | ! |
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| 230 | IF(lwp) THEN ! control print |
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| 231 | WRITE(numout,*) ' Namelist : nampisext --- parameters for air-sea exchange' |
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| 232 | WRITE(numout,*) ' reading in the atm pCO2 file or constant value ln_co2int =', ln_co2int |
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| 233 | ENDIF |
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| 234 | ! |
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| 235 | CALL p4z_patm( nit000 ) |
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| 236 | ! |
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| 237 | IF( .NOT.ln_co2int .AND. .NOT.ln_presatmco2 ) THEN |
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| 238 | IF(lwp) THEN ! control print |
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| 239 | WRITE(numout,*) ' Constant Atmospheric pCO2 value atcco2 =', atcco2 |
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| 240 | ENDIF |
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| 241 | satmco2(:,:) = atcco2 ! Initialisation of atmospheric pco2 |
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| 242 | ELSEIF( ln_co2int .AND. .NOT.ln_presatmco2 ) THEN |
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| 243 | IF(lwp) THEN |
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| 244 | WRITE(numout,*) ' Constant Atmospheric pCO2 value atcco2 =', atcco2 |
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| 245 | WRITE(numout,*) ' Atmospheric pCO2 value from file clname =', TRIM( clname ) |
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| 246 | WRITE(numout,*) ' Offset model-data start year nn_offset =', nn_offset |
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| 247 | ENDIF |
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| 248 | CALL ctl_opn( numco2, TRIM( clname) , 'OLD', 'FORMATTED', 'SEQUENTIAL', -1 , numout, lwp ) |
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| 249 | jm = 0 ! Count the number of record in co2 file |
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| 250 | DO |
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| 251 | READ(numco2,*,END=100) |
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| 252 | jm = jm + 1 |
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| 253 | END DO |
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| 254 | 100 nmaxrec = jm - 1 |
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| 255 | ALLOCATE( years (nmaxrec) ) ; years (:) = 0._wp |
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| 256 | ALLOCATE( atcco2h(nmaxrec) ) ; atcco2h(:) = 0._wp |
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| 257 | ! |
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| 258 | REWIND(numco2) |
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| 259 | DO jm = 1, nmaxrec ! get xCO2 data |
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| 260 | READ(numco2, *) years(jm), atcco2h(jm) |
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| 261 | IF(lwp) WRITE(numout, '(f6.0,f7.2)') years(jm), atcco2h(jm) |
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| 262 | END DO |
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| 263 | CLOSE(numco2) |
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| 264 | ELSEIF( .NOT.ln_co2int .AND. ln_presatmco2 ) THEN |
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| 265 | IF(lwp) WRITE(numout,*) ' Spatialized Atmospheric pCO2 from an external file' |
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| 266 | ELSE |
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| 267 | IF(lwp) WRITE(numout,*) ' Spatialized Atmospheric pCO2 from an external file' |
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| 268 | ENDIF |
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| 269 | ! |
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| 270 | oce_co2(:,:) = 0._wp ! Initialization of Flux of Carbon |
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| 271 | t_oce_co2_flx = 0._wp |
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| 272 | t_atm_co2_flx = 0._wp |
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| 273 | ! |
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| 274 | END SUBROUTINE p4z_flx_init |
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| 275 | |
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| 276 | |
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| 277 | SUBROUTINE p4z_patm( kt ) |
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| 278 | !!---------------------------------------------------------------------- |
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| 279 | !! *** ROUTINE p4z_atm *** |
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| 280 | !! |
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| 281 | !! ** Purpose : Read and interpolate the external atmospheric sea-level pressure |
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| 282 | !! ** Method : Read the files and interpolate the appropriate variables |
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| 283 | !! |
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| 284 | !!---------------------------------------------------------------------- |
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| 285 | INTEGER, INTENT(in) :: kt ! ocean time step |
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| 286 | ! |
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| 287 | INTEGER :: ierr, ios ! Local integer |
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| 288 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
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| 289 | TYPE(FLD_N) :: sn_patm ! informations about the fields to be read |
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| 290 | TYPE(FLD_N) :: sn_atmco2 ! informations about the fields to be read |
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| 291 | !! |
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| 292 | NAMELIST/nampisatm/ ln_presatm, ln_presatmco2, sn_patm, sn_atmco2, cn_dir |
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| 293 | !!---------------------------------------------------------------------- |
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| 294 | ! |
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| 295 | IF( kt == nit000 ) THEN !== First call kt=nittrc000 ==! |
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| 296 | ! |
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| 297 | IF(lwp) THEN |
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| 298 | WRITE(numout,*) |
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| 299 | WRITE(numout,*) ' p4z_patm : sea-level atmospheric pressure' |
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| 300 | WRITE(numout,*) ' ~~~~~~~~' |
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| 301 | ENDIF |
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| 302 | ! |
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| 303 | READ ( numnatp_ref, nampisatm, IOSTAT = ios, ERR = 901) |
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| 304 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisatm in reference namelist' ) |
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| 305 | READ ( numnatp_cfg, nampisatm, IOSTAT = ios, ERR = 902 ) |
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| 306 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'nampisatm in configuration namelist' ) |
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| 307 | IF(lwm) WRITE ( numonp, nampisatm ) |
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| 308 | ! |
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| 309 | ! |
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| 310 | IF(lwp) THEN !* control print |
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| 311 | WRITE(numout,*) ' Namelist : nampisatm --- Atmospheric Pressure as external forcing' |
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| 312 | WRITE(numout,*) ' constant atmopsheric pressure (F) or from a file (T) ln_presatm = ', ln_presatm |
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| 313 | WRITE(numout,*) ' spatial atmopsheric CO2 for flux calcs ln_presatmco2 = ', ln_presatmco2 |
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| 314 | ENDIF |
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| 315 | ! |
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| 316 | IF( ln_presatm ) THEN |
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| 317 | ALLOCATE( sf_patm(1), STAT=ierr ) !* allocate and fill sf_patm (forcing structure) with sn_patm |
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| 318 | IF( ierr > 0 ) CALL ctl_stop( 'STOP', 'p4z_flx: unable to allocate sf_patm structure' ) |
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| 319 | ! |
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| 320 | CALL fld_fill( sf_patm, (/ sn_patm /), cn_dir, 'p4z_flx', 'Atmospheric pressure ', 'nampisatm' ) |
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| 321 | ALLOCATE( sf_patm(1)%fnow(jpi,jpj,1) ) |
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| 322 | IF( sn_patm%ln_tint ) ALLOCATE( sf_patm(1)%fdta(jpi,jpj,1,2) ) |
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| 323 | ENDIF |
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| 324 | ! |
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| 325 | IF( ln_presatmco2 ) THEN |
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| 326 | ALLOCATE( sf_atmco2(1), STAT=ierr ) !* allocate and fill sf_atmco2 (forcing structure) with sn_atmco2 |
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| 327 | IF( ierr > 0 ) CALL ctl_stop( 'STOP', 'p4z_flx: unable to allocate sf_atmco2 structure' ) |
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| 328 | ! |
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| 329 | CALL fld_fill( sf_atmco2, (/ sn_atmco2 /), cn_dir, 'p4z_flx', 'Atmospheric co2 partial pressure ', 'nampisatm' ) |
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| 330 | ALLOCATE( sf_atmco2(1)%fnow(jpi,jpj,1) ) |
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| 331 | IF( sn_atmco2%ln_tint ) ALLOCATE( sf_atmco2(1)%fdta(jpi,jpj,1,2) ) |
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| 332 | ENDIF |
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| 333 | ! |
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| 334 | IF( .NOT.ln_presatm ) patm(:,:) = 1._wp ! Initialize patm if no reading from a file |
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| 335 | ! |
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| 336 | ENDIF |
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| 337 | ! |
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| 338 | IF( ln_presatm ) THEN |
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| 339 | CALL fld_read( kt, 1, sf_patm ) !* input Patm provided at kt + 1/2 |
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| 340 | patm(:,:) = sf_patm(1)%fnow(:,:,1)/101325.0 ! atmospheric pressure |
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| 341 | ENDIF |
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| 342 | ! |
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| 343 | IF( ln_presatmco2 ) THEN |
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| 344 | CALL fld_read( kt, 1, sf_atmco2 ) !* input atmco2 provided at kt + 1/2 |
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| 345 | satmco2(:,:) = sf_atmco2(1)%fnow(:,:,1) ! atmospheric pressure |
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| 346 | ELSE |
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| 347 | satmco2(:,:) = atcco2 ! Initialize atmco2 if no reading from a file |
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| 348 | ENDIF |
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| 349 | ! |
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| 350 | END SUBROUTINE p4z_patm |
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| 351 | |
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| 352 | |
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| 353 | INTEGER FUNCTION p4z_flx_alloc() |
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| 354 | !!---------------------------------------------------------------------- |
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| 355 | !! *** ROUTINE p4z_flx_alloc *** |
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| 356 | !!---------------------------------------------------------------------- |
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| 357 | ALLOCATE( satmco2(jpi,jpj), patm(jpi,jpj), STAT=p4z_flx_alloc ) |
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| 358 | ! |
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| 359 | IF( p4z_flx_alloc /= 0 ) CALL ctl_stop( 'STOP', 'p4z_flx_alloc : failed to allocate arrays' ) |
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| 360 | ! |
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| 361 | END FUNCTION p4z_flx_alloc |
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| 362 | |
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| 363 | !!====================================================================== |
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| 364 | END MODULE p4zflx |
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