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C !ROUTINE: DIC_SURFFORCING |
C !ROUTINE: DIC_SURFFORCING |
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C !INTERFACE: ========================================================== |
C !INTERFACE: ========================================================== |
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SUBROUTINE DIC_SURFFORCING( PTR_CO2 , GDC, |
SUBROUTINE DIC_SURFFORCING( PTR_CO2 , PTR_ALK, PTR_PO4, GDC, |
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I bi,bj,imin,imax,jmin,jmax, |
I bi,bj,imin,imax,jmin,jmax, |
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I myIter,myTime,myThid) |
I myIter,myTime,myThid) |
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#include "GRID.h" |
#include "GRID.h" |
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#include "FFIELDS.h" |
#include "FFIELDS.h" |
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#include "DIC_ABIOTIC.h" |
#include "DIC_ABIOTIC.h" |
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#ifdef DIC_BIOTIC |
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#include "PTRACERS_SIZE.h" |
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#include "PTRACERS.h" |
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#endif |
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C !INPUT PARAMETERS: =================================================== |
C !INPUT PARAMETERS: =================================================== |
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C myThid :: thread number |
C myThid :: thread number |
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INTEGER myIter, myThid |
INTEGER myIter, myThid |
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_RL myTime |
_RL myTime |
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_RL PTR_CO2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
_RL PTR_CO2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
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_RL PTR_ALK(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
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_RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
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INTEGER iMin,iMax,jMin,jMax, bi, bj |
INTEGER iMin,iMax,jMin,jMax, bi, bj |
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C !OUTPUT PARAMETERS: =================================================== |
C !OUTPUT PARAMETERS: =================================================== |
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c GDC :: tendency term due to air-sea exchange |
c GDC :: tendency due to air-sea exchange |
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_RL GDC(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL GDC(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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#ifdef ALLOW_PTRACERS |
#ifdef ALLOW_PTRACERS |
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kLev=1 |
kLev=1 |
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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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C PRE-INDUSTRIAL STEADY STATE pCO2 = 278.0 ppmv |
C PRE-INDUSTRIAL STEADY STATE pCO2 = 278.0 ppmv |
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DO j=1-OLy,sNy+OLy |
DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
DO i=1-OLx,sNx+OLx |
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AtmospCO2(i,j,bi,bj)=278.0d-6 |
AtmospCO2(i,j,bi,bj)=278.0d-6 |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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#endif |
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C ================================================================= |
C ================================================================= |
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C determine inorganic carbon chem coefficients |
C determine inorganic carbon chem coefficients |
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DO j=1-OLy,sNy+OLy |
DO j=jmin,jmax |
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DO i=1-OLx,sNx+OLx |
DO i=imin,imax |
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#ifdef DIC_BIOTIC |
#ifdef DIC_BIOTIC |
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cQQQQ check ptracer numbers |
cQQQQ check ptracer numbers |
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surfalk(i,j) = PTRACER(i,j,klev,bi,bj,2) |
surfalk(i,j) = PTR_ALK(i,j,klev) |
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& * maskC(i,j,kLev,bi,bj) |
& * maskC(i,j,kLev,bi,bj) |
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surfphos(i,j) = PTRACER(i,j,klev,bi,bj,3) |
surfphos(i,j) = PTR_PO4(i,j,klev) |
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& * maskC(i,j,kLev,bi,bj) |
& * maskC(i,j,kLev,bi,bj) |
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#else |
#else |
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surfalk(i,j) = 2.366595 * salt(i,j,kLev,bi,bj)/gsm_s |
surfalk(i,j) = 2.366595 * salt(i,j,kLev,bi,bj)/gsm_s |
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c pCO2 solver... |
c pCO2 solver... |
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C$TAF LOOP = parallel |
C$TAF LOOP = parallel |
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DO j=1-OLy,sNy+OLy |
DO j=jmin,jmax |
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C$TAF LOOP = parallel |
C$TAF LOOP = parallel |
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DO i=1-OLx,sNx+OLx |
DO i=imin,imax |
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IF(maskC(i,j,kLev,bi,bj) .NE. 0.)THEN |
IF(maskC(i,j,kLev,bi,bj) .NE. 0.)THEN |
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CALL CALC_PCO2_APPROX( |
CALL CALC_PCO2_APPROX( |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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DO j=1-OLy,sNy+OLy |
DO j=jmin,jmax |
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DO i=1-OLx,sNx+OLx |
DO i=imin,imax |
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IF (maskC(i,j,kLev,bi,bj).NE.0.) THEN |
IF (maskC(i,j,kLev,bi,bj).NE.0.) THEN |
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C calculate SCHMIDT NO. for CO2 |
C calculate SCHMIDT NO. for CO2 |
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& + sca4 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj) |
& + sca4 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj) |
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& *theta(i,j,kLev,bi,bj) |
& *theta(i,j,kLev,bi,bj) |
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c |
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#ifdef USE_PLOAD |
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c convert from Pa to atmos |
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AtmosP(i,j,bi,bj)=pLoad(i,j,bi,bj)/1.01295e5 |
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#endif |
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C Determine surface flux (FDIC) |
C Determine surface flux (FDIC) |
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C first correct pCO2at for surface atmos pressure |
C first correct pCO2at for surface atmos pressure |
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pCO2sat(i,j) = |
pCO2sat(i,j) = |
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& AtmosP(i,j,bi,bj)*AtmospCO2(i,j,bi,bj) |
& AtmosP(i,j,bi,bj)*AtmospCO2(i,j,bi,bj) |
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c find exchange coefficient |
c find exchange coefficient |
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c account for schmidt number and and varible piston velocity |
c account for schmidt number and and varible piston velocity |
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pisvel(i,j,bi,bj) =0.337*wind(i,j,bi,bj)**2/3.6d5 |
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Kwexch(i,j) = |
Kwexch(i,j) = |
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& pisvel(i,j,bi,bj) |
& pisvel(i,j,bi,bj) |
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& / sqrt(SchmidtNoDIC(i,j)/660.0) |
& / sqrt(SchmidtNoDIC(i,j)/660.0) |
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c OR use a constant coeff |
c OR use a constant coeff |
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c Kwexch(i,j) = 5e-5 |
c Kwexch(i,j) = 5e-5 |
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c ice influence |
c ice influence |
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cQQ Kwexch(i,j) =(1.d0-Fice(i,j,bi,bj))*Kwexch(i,j) |
Kwexch(i,j) =(1.d0-Fice(i,j,bi,bj))*Kwexch(i,j) |
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C Calculate flux in terms of DIC units using K0, solubility |
C Calculate flux in terms of DIC units using K0, solubility |
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C in salinity. Thus, also increase in other surface tracers |
C in salinity. Thus, also increase in other surface tracers |
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C (i.e. positive virtual flux into surface layer) |
C (i.e. positive virtual flux into surface layer) |
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C ...so here, VirtualFLux = dC/dt! |
C ...so here, VirtualFLux = dC/dt! |
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VirtualFlux(i,j)=gsm_DIC*surfaceTendencyS(i,j,bi,bj)/gsm_s |
VirtualFlux(i,j)=gsm_DIC*surfaceForcingS(i,j,bi,bj)/gsm_s |
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c OR |
c OR |
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c let virtual flux be zero |
c let virtual flux be zero |
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c VirtualFlux(i,j)=0.d0 |
c VirtualFlux(i,j)=0.d0 |
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ENDDO |
ENDDO |
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C update tendency |
C update tendency |
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DO j=1-OLy,sNy+OLy |
DO j=jmin,jmax |
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DO i=1-OLx,sNx+OLx |
DO i=imin,imax |
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GDC(i,j)= maskC(i,j,kLev,bi,bj)*( |
GDC(i,j)= maskC(i,j,kLev,bi,bj)*recip_drF(kLev)* |
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& FluxCO2(i,j,bi,bj)*recip_drF(kLev) |
& recip_hFacC(i,j,kLev,bi,bj)*( |
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& + VirtualFlux(i,j) |
& FluxCO2(i,j,bi,bj) + VirtualFlux(i,j) |
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& ) |
& ) |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |