- Timestamp:
- 2010-12-07T10:51:47+01:00 (13 years ago)
- File:
-
- 1 edited
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branches/nemo_v3_3_beta/NEMOGCM/NEMO/TOP_SRC/PISCES/p4zflx.F90
r2287 r2457 28 28 #endif 29 29 USE lib_mpp 30 USE lib_fortran 30 31 31 32 IMPLICIT NONE … … 35 36 PUBLIC p4z_flx_init 36 37 37 REAL(wp) :: & ! pre-industrial atmospheric [co2] (ppm) 38 atcox = 0.20946 , & !: 39 atcco2 = 278. !: 40 41 REAL(wp) :: & 42 xconv = 0.01/3600 !: coefficients for conversion 43 44 INTEGER :: nspyr !: number of timestep per year 45 46 #if defined key_cpl_carbon_cycle 47 REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & 48 oce_co2 !: ocean carbon flux 49 REAL(wp) :: & 50 t_atm_co2_flx, & !: Total atmospheric carbon flux per year 51 t_oce_co2_flx !: Total ocean carbon flux per year 52 #endif 38 REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: oce_co2 !: ocean carbon flux 39 REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: satmco2 !: atmospheric pco2 40 REAL(wp) :: t_oce_co2_flx !: Total ocean carbon flux 41 REAL(wp) :: t_atm_co2_flx !: global mean of atmospheric pco2 42 REAL(wp) :: area !: ocean surface 43 REAL(wp) :: atcco2 = 278. !: pre-industrial atmospheric [co2] (ppm) 44 REAL(wp) :: atcox = 0.20946 !: 45 REAL(wp) :: xconv = 0.01/3600 !: coefficients for conversion 53 46 54 47 !!* Substitution … … 77 70 REAL(wp), DIMENSION(jpi,jpj) :: zkgco2, zkgo2, zh2co3 78 71 #if defined key_diatrc && defined key_iomput 79 REAL(wp), DIMENSION(jpi,jpj) :: z cflx, zoflx, zkg, zdpco2, zdpo272 REAL(wp), DIMENSION(jpi,jpj) :: zoflx, zkg, zdpco2, zdpo2 80 73 #endif 81 74 CHARACTER (len=25) :: charout … … 86 79 ! SURFACE LAYER); THE RESULT OF THIS CALCULATION 87 80 ! IS USED TO COMPUTE AIR-SEA FLUX OF CO2 81 82 #if defined key_cpl_carbon_cycle 83 satmco2(:,:) = atm_co2(:,:) 84 #endif 88 85 89 86 DO jrorr = 1, 10 … … 150 147 DO ji = 1, jpi 151 148 ! Compute CO2 flux for the sea and air 152 #if ! defined key_cpl_carbon_cycle 153 zfld = atcco2 * tmask(ji,jj,1) * chemc(ji,jj,1) * zkgco2(ji,jj) 149 zfld = satmco2(ji,jj) * tmask(ji,jj,1) * chemc(ji,jj,1) * zkgco2(ji,jj) 154 150 zflu = zh2co3(ji,jj) * tmask(ji,jj,1) * zkgco2(ji,jj) 155 #else156 zfld = atm_co2(ji,jj) * tmask(ji,jj,1) * chemc(ji,jj,1) * zkgco2(ji,jj)157 zflu = zh2co3(ji,jj) * tmask(ji,jj,1) * zkgco2(ji,jj)158 ! compute flux of carbon159 151 oce_co2(ji,jj) = ( zfld - zflu ) * rfact & 160 152 & * e1t(ji,jj) * e2t(ji,jj) * tmask(ji,jj,1) * 1000. 161 #endif 153 ! compute the trend 162 154 tra(ji,jj,1,jpdic) = tra(ji,jj,1,jpdic) + ( zfld - zflu ) / fse3t(ji,jj,1) 163 155 … … 170 162 ! Save diagnostics 171 163 # if ! defined key_iomput 172 trc2d(ji,jj,jp_pcs0_2d ) = ( zfld - zflu ) * 1000. * tmask(ji,jj,1) 164 zfact = 1. / ( e1t(ji,jj) * e2t(ji,jj) ) / rfact 165 trc2d(ji,jj,jp_pcs0_2d ) = oce_co2(ji,jj) * zfact 173 166 trc2d(ji,jj,jp_pcs0_2d + 1) = ( zfld16 - zflu16 ) * 1000. * tmask(ji,jj,1) 174 167 trc2d(ji,jj,jp_pcs0_2d + 2) = zkgco2(ji,jj) * tmask(ji,jj,1) 175 trc2d(ji,jj,jp_pcs0_2d + 3) = ( atcco2- zh2co3(ji,jj) / ( chemc(ji,jj,1) + rtrn ) ) &168 trc2d(ji,jj,jp_pcs0_2d + 3) = ( satmco2(ji,jj) - zh2co3(ji,jj) / ( chemc(ji,jj,1) + rtrn ) ) & 176 169 & * tmask(ji,jj,1) 177 170 # else 178 zcflx(ji,jj) = ( zfld - zflu ) * 1000. * tmask(ji,jj,1)179 171 zoflx(ji,jj) = ( zfld16 - zflu16 ) * 1000. * tmask(ji,jj,1) 180 172 zkg (ji,jj) = zkgco2(ji,jj) * tmask(ji,jj,1) 181 zdpco2(ji,jj) = ( atcco2 - zh2co3(ji,jj) / ( chemc(ji,jj,1) + rtrn ) ) & 182 & * tmask(ji,jj,1) 183 zdpo2 (ji,jj) = ( atcox - trn(ji,jj,1,jpoxy) / ( chemc(ji,jj,2) + rtrn ) ) & 184 & * tmask(ji,jj,1) 173 zdpco2(ji,jj) = ( satmco2(ji,jj) - zh2co3(ji,jj) / ( chemc(ji,jj,1) + rtrn ) ) * tmask(ji,jj,1) 174 zdpo2 (ji,jj) = ( atcox - trn(ji,jj,1,jpoxy) / ( chemc(ji,jj,2) + rtrn ) ) * tmask(ji,jj,1) 185 175 # endif 186 176 #endif … … 188 178 END DO 189 179 190 #if defined key_cpl_carbon_cycle 191 ! Total Flux of Carbon 192 DO jj = 1, jpj 193 DO ji = 1, jpi 194 t_atm_co2_flx = t_atm_co2_flx + atm_co2(ji,jj) * tmask_i(ji,jj) 195 t_oce_co2_flx = t_oce_co2_flx + oce_co2(ji,jj) * tmask_i(ji,jj) 196 END DO 197 END DO 198 199 IF( MOD( kt, nspyr ) == 0 ) THEN 200 IF( lk_mpp ) THEN 201 CALL mpp_sum( t_atm_co2_flx ) ! sum over the global domain 202 CALL mpp_sum( t_oce_co2_flx ) ! sum over the global domain 203 ENDIF 204 ! Conversion in GtC/yr ; negative for outgoing from ocean 205 t_oce_co2_flx = (-1.) * t_oce_co2_flx * 12. / 1.e15 206 ! 207 WRITE(numout,*) ' Atmospheric pCO2 :' 208 WRITE(numout,*) '-------------------- : ',kt,' ',t_atm_co2_flx 209 WRITE(numout,*) '(ppm)' 210 WRITE(numout,*) 'Total Flux of Carbon out of the ocean :' 211 WRITE(numout,*) '-------------------- : ',t_oce_co2_flx 212 WRITE(numout,*) '(GtC/yr)' 213 t_atm_co2_flx = 0. 214 t_oce_co2_flx = 0. 215 # if defined key_iomput 216 CALL iom_put( "tatpco2" , t_atm_co2_flx ) 217 CALL iom_put( "tco2flx" , t_oce_co2_flx ) 218 #endif 180 t_oce_co2_flx = t_oce_co2_flx + glob_sum( oce_co2(:,:) ) ! Cumulative Total Flux of Carbon 181 IF( kt == nitend ) THEN 182 t_atm_co2_flx = glob_sum( satmco2(:,:) * e1t(:,:) * e2t(:,:) ) ! Total atmospheric pCO2 183 ! 184 t_oce_co2_flx = (-1.) * t_oce_co2_flx * 12. / 1.e15 ! Conversion in PgC ; negative for out of the ocean 185 t_atm_co2_flx = t_atm_co2_flx / area ! global mean of atmospheric pCO2 186 ! 187 IF( lwp) THEN 188 WRITE(numout,*) 189 WRITE(numout,*) ' Global mean of atmospheric pCO2 (ppm) at it= ', kt, ' date= ', ndastp 190 WRITE(numout,*) '------------------------------------------------------- : ',t_atm_co2_flx 191 WRITE(numout,*) 192 WRITE(numout,*) ' Cumulative total Flux of Carbon out of the ocean (PgC) :' 193 WRITE(numout,*) '------------------------------------------------------- ',t_oce_co2_flx 194 ENDIF 195 ! 219 196 ENDIF 220 #endif221 197 222 198 IF(ln_ctl) THEN ! print mean trends (used for debugging) … … 227 203 228 204 # if defined key_diatrc && defined key_iomput 229 CALL iom_put( "Cflx" , zcflx)205 CALL iom_put( "Cflx" , oce_co2(:,:) / ( e1t(:,:) * e2t(:,:) ) / rfact ) 230 206 CALL iom_put( "Oflx" , zoflx ) 231 207 CALL iom_put( "Kg" , zkg ) … … 261 237 ENDIF 262 238 263 ! number of time step per year 264 nspyr = INT( nyear_len(1) * rday / rdt ) 265 266 #if defined key_cpl_carbon_cycle 239 ! interior global domain surface 240 area = glob_sum( e1t(:,:) * e2t(:,:) ) 241 267 242 ! Initialization of Flux of Carbon 268 oce_co2(:,:) = 0. 269 t_atm_co2_flx = 0. 270 t_oce_co2_flx = 0. 271 #endif 243 oce_co2(:,:) = 0._wp 244 t_atm_co2_flx = 0._wp 245 ! Initialisation of atmospheric pco2 246 satmco2(:,:) = atcco2 247 t_oce_co2_flx = 0._wp 272 248 273 249 END SUBROUTINE p4z_flx_init
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