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bling_carbonate_sys.F
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bling_carbonate_sys.F
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#include "BLING_OPTIONS.h"
CBOP
SUBROUTINE BLING_CARBONATE_SYS(
I PTR_DIC, PTR_ALK, PTR_PO4,
#ifdef USE_SIBLING
I PTR_SI,
#endif
I bi, bj, iMin, iMax, jMin, jMax,
I myTime, myIter, myThid )
C =================================================================
C | subroutine bling_carbonate_sys
C | o Calculate carbonate fluxes
C | Also update pH (3d field)
C =================================================================
IMPLICIT NONE
C == GLobal variables ==
#include "SIZE.h"
#include "DYNVARS.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
#include "BLING_VARS.h"
C == Routine arguments ==
C PTR_DIC :: dissolved inorganic carbon
C PTR_ALK :: alkalinity
C PTR_PO4 :: phosphate
C myTime :: current time
C myIter :: current timestep
C myThid :: thread Id. number
_RL PTR_DIC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
_RL PTR_ALK(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
_RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
#ifdef USE_SIBLING
_RL PTR_SI(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
#endif
INTEGER bi, bj, iMin, iMax, jMin, jMax
_RL myTime
INTEGER myIter
INTEGER myThid
#ifdef ALLOW_PTRACERS
C == Local variables ==
C i,j,k :: loop indices
C carbonate :: local value of calcium carbonate
C calcium :: local value of Ca
C sitlocal :: local value of Si
C diclocal :: local value of DIC
C alklocal :: local value of ALK
C pCO2local :: local value of pCO2
C pHlocal :: local value of pH
C CO3iter :: iterations counter for CO3 ion calculation
C CO3iterMax :: total number of iterations
INTEGER i,j,k
_RL carbonate
_RL calcium
_RL po4local
_RL sitlocal
_RL diclocal
_RL alklocal
_RL pCO2local
_RL pHlocal
_RL locTemp(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL locSalt(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
c INTEGER CO3iter
c INTEGER CO3iterMax
CEOP
C Since pH is now a 3D field and is solved for at every time step
C few iterations are needed
c CO3iterMax = 1
C determine carbonate ion concentration through full domain
C determine calcite saturation state
C$TAF LOOP = parallel
DO k=1,Nr
DO j=jMin,jMax
DO i=iMin,iMax
locTemp(i,j) = theta(i,j,k,bi,bj)
locSalt(i,j) = salt (i,j,k,bi,bj)
ENDDO
ENDDO
#ifdef CARBONCHEM_SOLVESAPHE
#ifdef ALLOW_DEBUG
IF (debugMode) CALL DEBUG_CALL(
& 'DIC_COEFFS_DEEP',myThid)
#endif
C Calculate carbon coefficients
CALL DIC_COEFFS_SURF(
I locTemp, locSalt,
I bi,bj,iMin,iMax,jMin,jMax,myThid)
C Now correct the coefficients for pressure dependence
CALL DIC_COEFFS_DEEP(
I locTemp, locSalt,
I bi,bj,iMin,iMax,jMin,jMax,
I k,myThid)
#else /* CARBONCHEM_SOLVESAPHE */
#ifdef ALLOW_DEBUG
IF (debugMode) CALL DEBUG_CALL(
& 'CARBON_COEFFS_PRESSURE_DEP',myThid)
#endif
C Get coefficients for carbonate calculations
CALL CARBON_COEFFS_PRESSURE_DEP(
I locTemp, locSalt,
I bi, bj, iMin, iMax, jMin, jMax,
I k, myThid )
#endif /* CARBONCHEM_SOLVESAPHE */
C--------------------------------------------------
C$TAF LOOP = parallel
DO j=jMin,jMax
C$TAF LOOP = parallel
DO i=iMin,iMax
IF ( hFacC(i,j,k,bi,bj) .GT. 0. _d 0) THEN
C$TAF init dic_caco3 = static, 2
#ifdef CARBONCHEM_SOLVESAPHE
calcium = cat(i,j,bi,bj)
#else
C Estimate calcium concentration from salinity
calcium = 1.028 _d -2*salt(i,j,k,bi,bj)/35. _d 0
#endif
po4local = PTR_PO4(i,j,k)
diclocal = PTR_DIC(i,j,k)
alklocal = PTR_ALK(i,j,k)
pHlocal = pH(i,j,k,bi,bj)
C Assume constant deep silica value
C 30 micromol = 0.03 mol m-3
C unless SIBLING is used
#ifdef USE_SIBLING
sitlocal = PTR_SI(i,j,k)
#else
sitlocal = 0.03 _d 0
#endif
#ifdef CARBONCHEM_SOLVESAPHE
IF ( selectPHsolver.GT.0 ) THEN
C Use Munhoven (2013) Solvesaphe routine to calculate pH and pCO2
#ifdef ALLOW_DEBUG
IF (debugMode) CALL DEBUG_CALL('AHINI_FOR_AT',myThid)
#endif
CAV since we carry pH, no need for an initial guess
C call AHINI_FOR_AT to get better initial guess of pH
c CALL AHINI_FOR_AT(alklocal*permil,
c I diclocal*permil,
c I bt(i,j,bi,bj),
c O pHlocal,
c I i,j,k,bi,bj,myIter,myThid )
#ifdef ALLOW_DEBUG
IF (debugMode) CALL DEBUG_CALL('CALC_PCO2_SOLVESAPHE',myThid)
#endif
CALL CALC_PCO2_SOLVESAPHE(
I locTemp(i,j), locSalt(i,j),
I diclocal, po4local,
I sitlocal, alklocal,
U pHlocal, pCO2local, carbonate,
I i,j,k,bi,bj,myIter,myThid )
C- convert carbonate to mol kg^-1-SW for calculation of saturation state
carbonate = carbonate*permil
ELSE
C Use the original Follows et al. (2006) solver
#endif /* CARBONCHEM_SOLVESAPHE */
#ifdef ALLOW_DEBUG
IF (debugMode) CALL DEBUG_CALL('CALC_PCO2_APPROX',myThid)
#endif
C Evaluate carbonate (CO3) ions concentration
C iteratively
c DO CO3iter = 1, CO3iterMax
C--------------------------------------------------
CALL CALC_PCO2_APPROX(
I locTemp(i,j), locSalt(i,j),
I diclocal, po4local,
I sitlocal,alklocal,
I ak1(i,j,bi,bj),ak2(i,j,bi,bj),
I ak1p(i,j,bi,bj),ak2p(i,j,bi,bj),ak3p(i,j,bi,bj),
I aks(i,j,bi,bj),akb(i,j,bi,bj),akw(i,j,bi,bj),
I aksi(i,j,bi,bj),akf(i,j,bi,bj),
I ak0(i,j,bi,bj),fugf(i,j,bi,bj),ff(i,j,bi,bj),
I bt(i,j,bi,bj),st(i,j,bi,bj),ft(i,j,bi,bj),
U pHlocal,pCO2local,carbonate,
I i,j,k,bi,bj,myIter,myThid )
c ENDDO
#ifdef CARBONCHEM_SOLVESAPHE
ENDIF
#endif /* CARBONCHEM_SOLVESAPHE */
pH(i,j,k,bi,bj) = pHlocal
C Calculate calcium carbonate (calcite and aragonite)
C saturation state
omegaC(i,j,k,bi,bj) = calcium * carbonate /
& Ksp_TP_Calc(i,j,bi,bj)
omegaAr(i,j,k,bi,bj) = calcium * carbonate /
& Ksp_TP_Arag(i,j,bi,bj)
ELSE
pH(i,j,k,bi,bj) = 8. _d 0
omegaC(i,j,k,bi,bj) = 0. _d 0
omegaAr(i,j,k,bi,bj) = 0. _d 0
ENDIF
ENDDO
ENDDO
ENDDO
#endif /* ALLOW_PTRACERS */
RETURN
END