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dimitri |
1.1.2.1 |
C $Header: $ |
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C $Name: $ |
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#include "CPP_OPTIONS.h" |
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CBOP |
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C !ROUTINE: EXTERNAL_FORCING_TR |
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C !INTERFACE: |
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SUBROUTINE EXTERNAL_FORCING_TR( |
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I iMin, iMax, jMin, jMax,bi,bj,kLev, |
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I myTime,myThid) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | S/R EXTERNAL_FORCING_TR |
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C | o Contains problem specific forcing for tracer Tr1. |
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C *==========================================================* |
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C | Adds terms to gTr1 for forcing by external sources. |
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C | This routine is hardcoded for OCMIP CFC-11 experiment. |
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C | It assumes that myTime = on January 1, 1930. |
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C | See the OCMIP-2 CFC HOWTO for details. |
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C *==========================================================* |
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C \ev |
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C !USES: |
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IMPLICIT NONE |
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C == Global data == |
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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 "TR1.h" |
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_RL sc_cfc, sol_cfc |
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EXTERNAL sc_cfc, sol_cfc |
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C iMin - Working range of tile for applying forcing. |
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C iMax |
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C jMin |
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C jMax |
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C kLev |
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INTEGER iMin, iMax, jMin, jMax, kLev, bi, bj |
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_RL myTime |
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INTEGER myThid |
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C !LOCAL VARIABLES: |
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C == Local variables == |
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C i,j :: Loop counters |
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C aWght, bWght :: Interpolation weights |
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INTEGER i,j,intime0,intime1,nForcingPeriods |
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_RL aWght,bWght,rdt |
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_RL fprd,fcyc,ftm,ftmold |
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_RL KW,CSAT,ALPHA,PCFC,PCFC1,PCFC2,TMP1,TMP2 |
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CEOP |
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IF ( kLev .EQ. 1 ) THEN |
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C Find records and compute interpolation weights |
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fprd = 2629800 |
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fcyc = 31557600 |
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nForcingPeriods = fcyc / fprd |
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ftm = mod( myTime + fcyc - fprd / 2 , fcyc ) |
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intime0 = int( ftm / fprd ) |
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intime1 = mod( intime0 + 1, nForcingPeriods ) |
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aWght = ( ftm - fprd * intime0 ) / ( fprd ) |
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bWght = 1. - aWght |
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intime0 = intime0 + 1 |
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intime1 = intime1 + 1 |
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C Now calculate whether it is time to update the forcing arrays |
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ftmold = mod( myTime - deltaTclock + fcyc - fprd / 2 , fcyc ) |
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IF ( |
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& (int(ftmold/fprd)+1) .NE. intime0 |
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& .OR. myTime .EQ. startTime |
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& ) THEN |
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C If the above condition is met then we need to read in |
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C data for the period ahead and the period behind myTime. |
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_BEGIN_MASTER(myThid) |
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WRITE(*,*) |
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& 'S/R EXTERNAL_FORCING_TR: Reading new data',myTime |
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CALL MDSREADFIELD ( FiceFile, readBinaryPrec, |
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& 'RS', 1, fice0, intime0, myThid ) |
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CALL MDSREADFIELD ( FiceFile, readBinaryPrec, |
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& 'RS', 1, fice1, intime1, myThid ) |
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CALL MDSREADFIELD ( XkwFile, readBinaryPrec, |
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& 'RS', 1, xkw0, intime0, myThid ) |
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CALL MDSREADFIELD ( XkwFile, readBinaryPrec, |
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& 'RS', 1, xkw1, intime1, myThid ) |
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CALL MDSREADFIELD ( PatmFile, readBinaryPrec, |
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& 'RS', 1, patm0, intime0, myThid ) |
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CALL MDSREADFIELD ( PatmFile, readBinaryPrec, |
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& 'RS', 1, patm1, intime1, myThid ) |
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_END_MASTER(myThid) |
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_EXCH_XY_R4(fice0 , myThid ) |
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_EXCH_XY_R4(fice1 , myThid ) |
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_EXCH_XY_R4(xkw0 , myThid ) |
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_EXCH_XY_R4(xkw1 , myThid ) |
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_EXCH_XY_R4(patm0 , myThid ) |
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_EXCH_XY_R4(patm1 , myThid ) |
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ENDIF |
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C-- Interpolate in time |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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fice(i,j,bi,bj) = bWght*fice0(i,j,bi,bj) + |
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& aWght*fice1(i,j,bi,bj) |
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if( fice(i,j,bi,bj) .LT. 0.2 ) fice(i,j,bi,bj) = 0.0 |
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xkw(i,j,bi,bj) = bWght* xkw0(i,j,bi,bj) + |
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& aWght* xkw1(i,j,bi,bj) |
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patm(i,j,bi,bj) = bWght*patm0(i,j,bi,bj) + |
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& aWght*patm1(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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C Find records and interpolation weights for PCFC |
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fprd = 31557600 |
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ftm = myTime + fprd / 2 |
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intime0 = int( ftm / fprd ) |
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intime1 = intime0 + 1 |
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aWght = ( ftm - fprd * intime0 ) / ( fprd ) |
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bWght = 1. - aWght |
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intime0 = intime0 + 1930 |
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intime1 = intime1 + 1930 |
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PCFC1 = bWght * CFCp11(intime0,1) + aWght * CFCp11(intime1,1) |
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PCFC2 = bWght * CFCp11(intime0,2) + aWght * CFCp11(intime1,2) |
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C-- Forcing term: add tracer in top-layer |
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C TR1 is tracer concentration in mol/m^3 |
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C OCMIP formula provides air-sea flux F in mol/m^2/s |
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C GTR1 = F / drF(1) in mol/m^3/s |
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C |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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TMP1 = theta(i,j,1,bi,bj) |
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TMP2 = salt(i,j,1,bi,bj) |
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KW = (1.-fice(i,j,bi,bj)) * xkw(i,j,bi,bj) * |
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& (sc_cfc(TMP1,11)/660)**(-1/2) |
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PCFC = pCFCw1(I,J,bi,bj) * PCFC1 + |
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& pCFCw2(I,J,bi,bj) * PCFC2 |
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ALPHA = sol_cfc(TMP1,TMP2,11) |
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CSAT = ALPHA * PCFC * patm(i,j,bi,bj) |
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TMP1 = KW * ( CSAT - Tr1(i,j,1,bi,bj) ) |
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gTr1(i,j,1,bi,bj) = gTr1(i,j,1,bi,bj) + |
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& TMP1 * recip_drF(1) * recip_hFacC(i,j,1,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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RETURN |
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END |
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C==================================================================== |
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c_ --------------------------------------------------------------------- |
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c_ RCS lines preceded by "c_ " |
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c_ --------------------------------------------------------------------- |
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c_ |
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c_ $Source: /home/orr/ocmip/web/OCMIP/phase2/simulations/CFC/boundcond/RCS/sc_cfc.f,v $ |
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c_ $Revision: 1.1 $ |
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c_ $Date: 1998/07/07 15:22:00 $ ; $State: Exp $ |
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c_ $Author: orr $ ; $Locker: $ |
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c_ |
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c_ --------------------------------------------------------------------- |
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c_ $Log: sc_cfc.f,v $ |
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c_ Revision 1.1 1998/07/07 15:22:00 orr |
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c_ Initial revision |
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c_ |
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c_ --------------------------------------------------------------------- |
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c_ |
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_RL FUNCTION sc_cfc(t,kn) |
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c--------------------------------------------------- |
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c CFC 11 and 12 schmidt number |
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c as a fonction of temperature. |
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c |
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c ref: Zheng et al (1998), JGR, vol 103,No C1 |
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c |
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c t: temperature (degree Celcius) |
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c kn: = 11 for CFC-11, 12 for CFC-12 |
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c |
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c J-C Dutay - LSCE |
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c--------------------------------------------------- |
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IMPLICIT NONE |
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INTEGER kn |
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_RL a1 ( 11: 12), a2 ( 11: 12), a3 ( 11: 12), a4 ( 11: 12) |
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_RL t |
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c |
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c coefficients with t in degre Celcius |
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c ------------------------------------ |
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a1(11) = 3501.8 |
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a2(11) = -210.31 |
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a3(11) = 6.1851 |
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a4(11) = -0.07513 |
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c |
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a1(12) = 3845.4 |
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a2(12) = -228.95 |
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a3(12) = 6.1908 |
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a4(12) = -0.067430 |
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c |
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sc_cfc = a1(kn) + a2(kn) * t + a3(kn) *t*t |
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& + a4(kn) *t*t*t |
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RETURN |
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END |
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C==================================================================== |
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c_ --------------------------------------------------------------------- |
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c_ RCS lines preceded by "c_ " |
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c_ --------------------------------------------------------------------- |
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c_ |
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c_ $Source: /www/html/ipsl/OCMIP/phase2/simulations/CFC/boundcond/RCS/sol_cfc.f,v $ |
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c_ $Revision: 1.2 $ |
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c_ $Date: 1998/07/17 07:37:02 $ ; $State: Exp $ |
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c_ $Author: jomce $ ; $Locker: $ |
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c_ |
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c_ --------------------------------------------------------------------- |
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c_ $Log: sol_cfc.f,v $ |
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c_ Revision 1.2 1998/07/17 07:37:02 jomce |
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c_ Fixed slight bug in units conversion: converted 1.0*e-12 to 1.0e-12 |
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c_ following warning from Matthew Hecht at NCAR. |
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c_ |
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c_ Revision 1.1 1998/07/07 15:22:00 orr |
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c_ Initial revision |
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c_ |
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c_ --------------------------------------------------------------------- |
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c_ |
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_RL FUNCTION sol_cfc(pt,ps,kn) |
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c------------------------------------------------------------------- |
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c |
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c CFC 11 and 12 Solubilities in seawater |
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c ref: Warner & Weiss (1985) , Deep Sea Research, vol32 |
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c |
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c pt: temperature (degre Celcius) |
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c ps: salinity (o/oo) |
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c kn: 11 = CFC-11, 12 = CFC-12 |
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c sol_cfc: in mol/m3/pptv |
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c 1 pptv = 1 part per trillion = 10^-12 atm = 1 picoatm |
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c |
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c J-C Dutay - LSCE |
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c------------------------------------------------------------------- |
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_RL pt, ps,ta,d |
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_RL a1 ( 11: 12), a2 ( 11: 12), a3 ( 11: 12), a4 ( 11: 12) |
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_RL b1 ( 11: 12), b2 ( 11: 12), b3 ( 11: 12) |
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INTEGER kn |
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cc |
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cc coefficient for solubility in mol/l/atm |
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cc ---------------------------------------- |
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c |
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c for CFC 11 |
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c ---------- |
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a1 ( 11) = -229.9261 |
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a2 ( 11) = 319.6552 |
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a3 ( 11) = 119.4471 |
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a4 ( 11) = -1.39165 |
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b1 ( 11) = -0.142382 |
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b2 ( 11) = 0.091459 |
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b3 ( 11) = -0.0157274 |
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c |
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c for CFC/12 |
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c ---------- |
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a1 ( 12) = -218.0971 |
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a2 ( 12) = 298.9702 |
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a3 ( 12) = 113.8049 |
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a4 ( 12) = -1.39165 |
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b1 ( 12) = -0.143566 |
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b2 ( 12) = 0.091015 |
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b3 ( 12) = -0.0153924 |
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c |
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ta = ( pt + 273.16)* 0.01 |
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d = ( b3 ( kn)* ta + b2 ( kn))* ta + b1 ( kn) |
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c |
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c |
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sol_cfc |
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$ = exp ( a1 ( kn) |
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$ + a2 ( kn)/ ta |
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$ + a3 ( kn)* log ( ta ) |
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$ + a4 ( kn)* ta * ta + ps* d ) |
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c |
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c conversion from mol/(l * atm) to mol/(m^3 * atm) |
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c ------------------------------------------------ |
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sol_cfc = 1000. * sol_cfc |
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c |
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c conversion from mol/(m^3 * atm) to mol/(m3 * pptv) |
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c -------------------------------------------------- |
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sol_cfc = 1.0e-12 * sol_cfc |
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END |
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