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C $Header: /u/gcmpack/MITgcm/pkg/dic/calcite_saturation.F,v 1.6 2008/04/03 22:49:53 dfer Exp $ |
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C $Name: $ |
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|
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#include "DIC_OPTIONS.h" |
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#include "GCHEM_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: CAR_FLUX |
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|
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C !INTERFACE: ========================================================== |
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SUBROUTINE CALCITE_SATURATION(PTR_DIC, PTR_ALK, PTR_PO4, |
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I bi,bj,imin,imax,jmin,jmax, |
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I myIter,myTime,myThid) |
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|
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C !DESCRIPTION: |
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C Calculate carbonate fluxes |
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|
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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 "DIC_VARS.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 bioac :: biological productivity |
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_RL PTR_DIC(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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|
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INTEGER myIter |
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_RL myTime |
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INTEGER myThid |
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INTEGER imin, imax, jmin, jmax, bi, bj |
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|
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C !OUTPUT PARAMETERS: =================================================== |
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|
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#ifdef ALLOW_PTRACERS |
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#ifdef DIC_BIOTIC |
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|
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C !LOCAL VARIABLES: ==================================================== |
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C i,j,k :: loop indices |
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c ko :: loop-within-loop index |
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c depth_u, depth_l :: depths of upper and lower interfaces |
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c flux_u, flux_l :: flux through upper and lower interfaces |
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c zbase :: depth of bottom of current productive layer |
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INTEGER I,J,k |
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_RL carbonate |
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_RL calcium |
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_RL silicaTEST |
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_RL po4local |
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_RL diclocal |
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_RL alklocal |
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_RL pCO2local |
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_RL pHlocal |
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INTEGER CO3ITER |
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INTEGER CO3ITERmax |
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CEOP |
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|
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|
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cmick................................................... |
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write(6,*)'myIter ',myIter,' CALLED CALCITEcd_SATURATION' |
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c write(6,*)'WARNING calcite_sat needs 3d silica & H0 set=7.9' |
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c write(6,*)' - & Fixed first guess of deep pH to 7.9' |
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cmick.................................................... |
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|
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c determine carbonate ion concentration through full domain |
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c determine calcite saturation state |
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DO k=1,Nr |
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|
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CALL CARBON_COEFFS_PRESSURE_DEP( |
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I theta,salt, |
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I bi,bj,iMin,iMax,jMin,jMax, |
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I k) |
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|
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|
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DO j=jmin,jmax |
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DO i=imin,imax |
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|
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if ( hFacC(i,j,k,bi,bj) .gt. 0. _d 0 ) then |
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|
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calcium = 1.028 _d -2*salt(i,j,k,bi,bj)/35. _d 0 |
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|
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c 30 micromol = 0.03 mol m-3 |
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silicaTEST = 0.03 _d 0 |
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po4local = PTR_PO4(i,j,k) |
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diclocal = PTR_DIC(i,j,k) |
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alklocal = PTR_ALK(i,j,k) |
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pHlocal = 7.9 _d 0 |
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|
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CMICK - TEMPORARY!!!!! |
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CMICK silica = fixed |
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CMICK silica = fixed |
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C |
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CMICK -DEC 04 |
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CMICK- NOW ITERATE pH SOLVER AT DEPTH ONLY |
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CMICK TO ENSURE ACCURATE ESTIMATE OF CO3 AT DEPTH |
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CMICK - NOTE Si STILL USING A UNIFORM DUMMY VALUE |
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CO3itermax = 10 |
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CMICK - SO NOW WE ITERATE, UPDATING THE ESTIMATE OF pH and CO3-- |
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CMICK - SINCE WE CALL THIS FOR DEEP OCEAN INFREQUENTLY (MONTHLY?) |
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CMIKC - CAN AFFORD TO MAKE SEVERAL ITERATIONS... |
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DO CO3iter = 1, CO3itermax |
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CALL CALC_PCO2_APPROX_CO3( |
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I theta(i,j,k,bi,bj),salt(i,j,k,bi,bj), |
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I diclocal, po4local, |
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I silicaTEST,alklocal, |
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I ak1(i,j,bi,bj),ak2(i,j,bi,bj), |
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I ak1p(i,j,bi,bj),ak2p(i,j,bi,bj),ak3p(i,j,bi,bj), |
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I aks(i,j,bi,bj),akb(i,j,bi,bj),akw(i,j,bi,bj), |
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I aksi(i,j,bi,bj),akf(i,j,bi,bj),ff(i,j,bi,bj), |
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I bt(i,j,bi,bj),st(i,j,bi,bj),ft(i,j,bi,bj), |
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U pHlocal,pCO2local, |
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U carbonate ) |
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c........................................................ |
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c if(i .eq. 76 .and. j .eq. 36 .and. k .eq. 15) then |
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c write(6,*)'Iteration, pH = ',CO3iter,pHlocal |
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c endif |
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c........................................................ |
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END DO |
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|
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|
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omegaC(i,j,k,bi,bj) = calcium * carbonate / |
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& Ksp_TP_Calc(i,j,bi,bj) |
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|
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cmick................................................... |
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c if(omegaC(i,j,k,bi,bj) .eq. 0.) then |
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c if(i .eq. 76 .and. j .eq. 36 .and. k .eq. 15) then |
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c write(6,*)'i,j,k,KS,CO3,pHCa,T,S,hfacc,omega', |
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c & i,j,k, |
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c & Ksp_TP_Calc(i,j,bi,bj), |
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c & carbonate,calcium,pHlocal, |
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c & theta(i,j,k,bi,bj),salt(i,j,k,bi,bj), |
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c & hfacc(i,j,k,bi,bj),omegaC(i,j,k,bi,bj) |
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c write(6,*)'Ksp_TP_Calc', |
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c & Ksp_TP_Calc(i,j,bi,bj) |
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c write(6,*)'dic, alk, po4 ', |
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c & diclocal, alklocal,po4local |
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c write(6,*)'k1, k2, k1p, k2p, k3p ', |
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c & ak1(i,j,bi,bj),ak2(i,j,bi,bj), |
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c & ak1p(i,j,bi,bj),ak2p(i,j,bi,bj),ak3p(i,j,bi,bj) |
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c write(6,*)'ks, kb, kw, ksi ', |
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c & aks(i,j,bi,bj),akb(i,j,bi,bj),akw(i,j,bi,bj), |
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c & aksi(i,j,bi,bj) |
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c write(6,*)'akf, ff, bt, st, ft ', |
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c & akf(i,j,bi,bj),ff(i,j,bi,bj), |
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c & bt(i,j,bi,bj),st(i,j,bi,bj),ft(i,j,bi,bj) |
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c end if |
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cmick.................................................... |
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else |
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omegaC(i,j,k,bi,bj) = 0. _d 0 |
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endif |
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ENDDO |
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ENDDO |
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|
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ENDDO |
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c |
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#endif |
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#endif |
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RETURN |
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END |
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