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C $Header: /u/gcmpack/MITgcm/pkg/cfc/cfc11_surfforcing.F,v 1.3 2006/08/06 01:29:12 jmc Exp $ |
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C $Name: $ |
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|
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#include "GCHEM_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: CFC11_SURFFORCING |
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C !INTERFACE: |
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SUBROUTINE CFC11_SURFFORCING( |
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I pTr_CFC11, AtmosCFC11, |
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O fluxCFC11, |
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I bi, bj, iMin, iMax, jMin, jMax, |
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I myTime, myIter, myThid ) |
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|
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C !DESCRIPTION: |
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C *==========================================================* |
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C | SUBROUTINE CFC11_SURFFORCING |
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C | o Calculate the CFC11 air-sea fluxes |
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C *==========================================================* |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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C == GLobal variables == |
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#include "SIZE.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 "DYNVARS.h" |
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#include "CFC.h" |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C pTr_CFC11 :: ocean CFC11 concentration |
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C AtmosCFC11 :: atmospheric CFC11 field |
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C fluxCFC11 :: air-sea CFC11 fluxes |
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C bi, bj :: current tile indices |
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C iMin,iMax :: computation domain, 1rst index bounds |
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C jMin,jMax :: computation domain, 2nd index bounds |
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C myTime :: current time in simulation |
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C myIter :: current iteration number |
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C myThid :: my Thread Id number |
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_RL pTr_CFC11 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
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_RL AtmosCFC11(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL fluxCFC11 (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER bi, bj |
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INTEGER iMin, iMax, jMin, jMax |
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_RL myTime |
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INTEGER myIter, myThid |
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CEOP |
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|
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#ifdef ALLOW_PTRACERS |
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#ifdef ALLOW_CFC |
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|
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C !LOCAL VARIABLES: |
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C i, j, k - Loop counters |
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INTEGER i,j,k |
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C Solubility relation coefficients |
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_RL SchmidtNocfc11(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL SolCFC11(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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c _RL cfc11sat(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL Kwexch(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL Csat(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL ttemp, ttemp2 |
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|
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k=1 |
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|
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C calculate SCHMIDT NO. for O2 |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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IF ( maskC(i,j,k,bi,bj).NE.zeroRS ) THEN |
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C calculate SCHMIDT NO. for CFC11 |
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SchmidtNocfc11(i,j) = |
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& sca_11_1 |
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& + sca_11_2 * theta(i,j,k,bi,bj) |
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& + sca_11_3 * theta(i,j,k,bi,bj)*theta(i,j,k,bi,bj) |
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& + sca_11_4 * theta(i,j,k,bi,bj)*theta(i,j,k,bi,bj) |
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& *theta(i,j,k,bi,bj) |
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c calculate solubility for CFC11 |
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ttemp=( theta(i,j,k,bi,bj) + 273.16 _d 0)* 0.01 _d 0 |
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ttemp2=( B3_11 * ttemp + B2_11 )*ttemp + B1_11 |
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SolCFC11(i,j) = |
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& EXP ( A1_11 |
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& + A2_11 / ttemp |
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& + A3_11 * log( ttemp ) |
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& + A4_11 * ttemp * ttemp |
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& + Salt(i,j,k,bi,bj)* ttemp2 ) |
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c conversion from mol/(l * atm) to mol/(m^3 * atm) |
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SolCFC11(i,j) = 1000. _d 0 * SolCFC11(i,j) |
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c conversion from mol/(m^3 * atm) to mol/(m3 * pptv) |
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SolCFC11(i,j) = 1. _d -12 * SolCFC11(i,j) |
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C Determine surface flux (Fcfc11) |
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Csat(i,j) = SolCFC11(i,j)*AtmosP(i,j,bi,bj) |
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& *AtmosCFC11(i,j) |
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Kwexch(i,j) = (1. _d 0 - fIce(i,j,bi,bj)) |
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& * pisVel(i,j,bi,bj) |
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& / SQRT(SchmidtNoCFC11(i,j)/660. _d 0) |
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fluxCFC11(i,j) = |
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& Kwexch(i,j)*(Csat(i,j) - pTr_CFC11(i,j,1)) |
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|
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ELSE |
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fluxCFC11(i,j) = 0. _d 0 |
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ENDIF |
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|
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ENDDO |
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ENDDO |
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|
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#endif /* ALLOW_CFC */ |
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#endif /* ALLOW_PTRACERS */ |
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|
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RETURN |
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END |
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