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C $Header: /u/gcmpack/MITgcm/pkg/dic/dic_atmos.F,v 1.11 2008/04/24 21:35:53 gforget Exp $ |
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C $Name: $ |
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|
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#include "DIC_OPTIONS.h" |
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#include "PTRACERS_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: DIC_ATMOS |
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|
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C !INTERFACE: ========================================================== |
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SUBROUTINE DIC_ATMOS( istate, myTime, myIter, myThid ) |
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|
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C !DESCRIPTION: |
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C Calculate the atmospheric pCO2 |
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C dic_int1: |
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C 0=use default 278.d-6 |
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C 1=use constant value - dic_pCO2, read in from data.dic |
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C 2=read in from file |
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C 3=interact with atmospheric box |
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C !USES: =============================================================== |
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IMPLICIT NONE |
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#include "SIZE.h" |
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#include "DYNVARS.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "FFIELDS.h" |
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#include "DIC_VARS.h" |
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#include "PTRACERS_SIZE.h" |
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#include "PTRACERS_FIELDS.h" |
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#include "DIC_ATMOS.h" |
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|
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C !INPUT PARAMETERS: =================================================== |
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C myThid :: thread number |
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C myIter :: current timestep |
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C myTime :: current time |
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C istate :: 0=initial call, 1=subsequent calls |
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INTEGER myIter, myThid, istate |
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_RL myTime |
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|
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#ifdef ALLOW_PTRACERS |
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LOGICAL DIFFERENT_MULTIPLE |
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EXTERNAL DIFFERENT_MULTIPLE |
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|
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C !LOCAL VARIABLES: ==================================================== |
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INTEGER bi, bj, I,J,k |
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INTEGER ntim, iUnit |
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c |
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_RL total_flux |
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_RL total_ocean_carbon_old |
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_RL total_atmos_carbon_old |
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_RL total_atmos_moles |
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_RL atpco2 |
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_RL total_carbon_old, total_carbon, carbon_diff |
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_RL tmp |
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_RL year_diff_ocean, year_diff_atmos, year_total |
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_RL start_diff_ocean, start_diff_atmos, start_total |
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C variables for reading CO2 input files |
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_RL aWght, bWght |
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c |
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CHARACTER*(MAX_LEN_FNAM) fn |
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LOGICAL permCheckPoint |
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CEOP |
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|
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cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc |
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|
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c if coupled to atmsopheric model, use the |
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c Co2 value passed from the coupler |
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#ifndef USE_ATMOSCO2 |
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|
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IF ( nThreads .GT. 1 .AND. |
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& ( dic_int1.EQ.2 .OR. dic_int1.EQ.3 ) ) THEN |
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C Problem with I/O and global-sum for multi-threaded execution |
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C Needs to be fixed before using this S/R in multi-threaded run |
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STOP 'S/R DIC_ATMOS: multi-threaded not right' |
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ENDIF |
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|
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c default - set only once |
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if (dic_int1.eq.0.and.istate.eq.0) then |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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|
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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AtmospCO2(i,j,bi,bj)=278.0 _d -6 |
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ENDDO |
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ENDDO |
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|
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ENDDO |
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ENDDO |
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endif |
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|
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c user specified value - set only once |
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if (dic_int1.eq.1.and.istate.eq.0) then |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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|
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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AtmospCO2(i,j,bi,bj)=dic_pCO2 |
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ENDDO |
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ENDDO |
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|
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ENDDO |
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ENDDO |
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endif |
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|
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c read from a file (note: |
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c dic_int2=number entries to read |
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c dic_int3=start timestep, |
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c dic_int4=timestep between file entries) |
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if (dic_int1.eq.2) then |
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c linearly interpolate between file entries |
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ntim=int((myIter-dic_int3)/dic_int4)+1 |
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aWght = FLOAT(myIter-dic_int3) |
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bWght = FLOAT(dic_int4) |
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aWght = 0.5 _d 0 + aWght/bWght - FLOAT(ntim-1) |
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if (aWght.gt.1. _d 0) then |
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ntim=ntim+1 |
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aWght=aWght-1. _d 0 |
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endif |
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bWght = 1. _d 0 - aWght |
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tmp=co2atmos(ntim)*bWght+co2atmos(ntim+1)*aWght |
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c print*,'weights',ntim, aWght, bWght, tmp |
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|
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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|
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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AtmospCO2(i,j,bi,bj)=tmp |
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ENDDO |
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ENDDO |
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|
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print*,'AtmospCO2(20,20)',AtmospCO2(20,20,bi,bj) |
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|
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ENDDO |
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ENDDO |
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|
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|
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endif |
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|
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|
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c interactive atmosphere |
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if (dic_int1.eq.3) then |
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|
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c _BEGIN_MASTER(myThid) |
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|
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cMass dry atmosphere = (5.1352+/-0.0003)d18 kg (Trenberth & Smith, |
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cJournal of Climate 2005) |
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cand Mean molecular mass air = 28.97 g/mol (NASA earth fact sheet) |
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total_atmos_moles= 1.77 _d 20 |
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c for 278ppmv we need total_atmos_carbon=4.9206e+16 |
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|
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if (istate.gt.0) then |
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total_ocean_carbon_old=total_ocean_carbon |
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total_atmos_carbon_old=total_atmos_carbon |
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else |
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total_ocean_carbon_old=0. _d 0 |
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total_atmos_carbon_old=0. _d 0 |
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endif |
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|
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total_flux= 0. _d 0 |
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total_ocean_carbon= 0. _d 0 |
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|
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO i=1,sNx |
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DO j=1,sNy |
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if (istate.gt.0) then |
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total_flux=total_flux+FluxCO2(i,j,bi,bj)*rA(i,j,bi,bj)* |
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& maskC(i,j,1,bi,bj)*dTtracerLev(1) |
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endif |
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DO k=1,nR |
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total_ocean_carbon= total_ocean_carbon+ |
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& ( Ptracer(i,j,k,bi,bj,1) |
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#ifdef DIC_BIOTIC |
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& +R_cp*Ptracer(i,j,k,bi,bj,4) |
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#endif |
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& ) * rA(i,j,bi,bj)* |
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& drF(k)*hFacC(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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_GLOBAL_SUM_R8(total_flux,myThid) |
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_GLOBAL_SUM_R8(total_ocean_carbon,myThid) |
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|
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if (istate.eq.0) then |
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c use value read in dic_init_fixed |
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total_atmos_carbon=total_atmos_carbon_ini |
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else |
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c calculate new atmos pCO2 |
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total_atmos_carbon=total_atmos_carbon - total_flux |
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c write out if time for a new pickup |
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permCheckPoint = .FALSE. |
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permCheckPoint = |
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& DIFFERENT_MULTIPLE(pChkptFreq,myTime,deltaTClock) |
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if (permCheckPoint) then |
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DO i = 1,MAX_LEN_FNAM |
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fn(i:i) = ' ' |
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ENDDO |
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WRITE(fn,'(A,I10.10)') 'dic_atmos.',myIter |
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C Going to really do some IO. Make everyone except master thread wait. |
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_BARRIER |
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c write values to new pickup |
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|
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CALL MDSFINDUNIT( iUnit, myThid ) |
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open(iUnit,file=fn,status='new') |
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write(iUnit,*) total_atmos_carbon, atpco2 |
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close(iUnit) |
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|
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endif |
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endif |
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|
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atpco2=total_atmos_carbon/total_atmos_moles |
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|
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c print*,'QQpCO2', total_atmos_carbon, atpco2, total_ocean_carbon, |
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c & total_flux |
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|
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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|
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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AtmospCO2(i,j,bi,bj)=atpco2 |
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ENDDO |
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ENDDO |
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|
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ENDDO |
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ENDDO |
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|
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print*,'QQ atmos C, total, pCo2', total_atmos_carbon, atpco2 |
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total_carbon=total_atmos_carbon + total_ocean_carbon |
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total_carbon_old=total_atmos_carbon_old + total_ocean_carbon_old |
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carbon_diff=total_carbon-total_carbon_old |
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print*,'QQ total C, current, old, diff', total_carbon, |
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& total_carbon_old, carbon_diff |
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carbon_diff=total_ocean_carbon-total_ocean_carbon_old |
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tmp=carbon_diff-total_flux |
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print*,'QQ ocean C, current, old, diff',total_ocean_carbon, |
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& total_ocean_carbon_old, carbon_diff |
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print*,'QQ air-sea flux, addition diff', total_flux, tmp |
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|
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c if end of forcing cycle, find total change in ocean carbon |
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if (istate.eq.0) then |
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total_ocean_carbon_start=total_ocean_carbon |
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total_ocean_carbon_year=total_ocean_carbon |
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total_atmos_carbon_start=total_atmos_carbon |
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total_atmos_carbon_year=total_atmos_carbon |
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else |
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permCheckPoint = .FALSE. |
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permCheckPoint = |
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& DIFFERENT_MULTIPLE(externForcingCycle,myTime,deltaTClock) |
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if (permCheckPoint) then |
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year_diff_ocean=total_ocean_carbon-total_ocean_carbon_year |
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year_diff_atmos=total_atmos_carbon-total_atmos_carbon_year |
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year_total=(total_ocean_carbon+total_atmos_carbon) - |
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& (total_ocean_carbon_year+total_atmos_carbon_year) |
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start_diff_ocean=total_ocean_carbon-total_ocean_carbon_start |
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start_diff_atmos=total_atmos_carbon-total_atmos_carbon_start |
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start_total=(total_ocean_carbon+total_atmos_carbon) - |
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& (total_ocean_carbon_start+total_atmos_carbon_start) |
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print*,'QQ YEAR END' |
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print*,'year diff: ocean, atmos, total', year_diff_ocean, |
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& year_diff_atmos, year_total |
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print*,'start diff: ocean, atmos, total ', start_diff_ocean, |
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& start_diff_atmos, start_total |
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c |
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total_ocean_carbon_year=total_ocean_carbon |
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total_atmos_carbon_year=total_atmos_carbon |
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endif |
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endif |
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|
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c _END_MASTER(myThid) |
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|
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endif |
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|
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#endif |
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#endif |
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|
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RETURN |
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END |
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