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C $Header: /u/gcmpack/MITgcm/pkg/dic/fe_chem.F,v 1.14 2008/04/18 19:32:12 stephd Exp $ |
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C $Name: $ |
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|
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#include "DIC_OPTIONS.h" |
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|
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CStartOfInterFace |
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SUBROUTINE Fe_CHEM( |
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I bi,bj,iMin,iMax,jMin,jMax, |
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I fe, freefe, |
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I myIter, myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE Fe_chem | |
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C | | |
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C | o Calculate L,FeL,Fe concentration | |
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C |==========================================================| |
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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 "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 == Routine arguments == |
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C bi, bj, iMin, iMax, jMin, jMax - Range of points for which calculation |
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C results will be set. |
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C myThid - Instance number for this innvocation of CALC_GT |
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_RL freefe(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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_RL fe(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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INTEGER bi,bj,iMin,iMax,jMin,jMax |
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INTEGER myIter,myThid |
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#ifdef AD_SAFE |
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_RL thx, thy, theps |
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#endif |
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CEndOfInterface |
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|
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#ifdef ALLOW_FE |
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|
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INTEGER I,J,K |
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_RL lig, FeL |
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_RL tmpfe |
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|
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CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc |
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CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc |
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CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc |
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CC |
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CC ADAPTED FROM PAYAL |
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CC |
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CC |
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CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc |
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CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc |
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CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc |
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|
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C ligand balance in surface layer |
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C in surface layer |
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|
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DO j=jmin,jmax |
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DO i=imin,imax |
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DO k=1,Nr |
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IF (hFacC(i,j,k,bi,bj) .GT. 0. _d 0) THEN |
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|
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#ifdef DIC_NO_NEG |
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tmpfe=max(0. _d 0 , fe (i,j,k,bi,bj)) |
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#else |
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tmpfe=fe (i,j,k,bi,bj) |
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#endif |
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|
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C Ligand,FeL,Fe calculation |
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lig=(-ligand_stab*tmpfe + |
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& ligand_stab*ligand_tot-1. _d 0 |
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& +((ligand_stab*tmpfe |
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& -ligand_stab*ligand_tot+1. _d 0)**2 |
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& +4. _d 0*ligand_stab*ligand_tot)**0.5 _d 0 |
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& )/(2. _d 0*ligand_stab) |
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|
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FeL = ligand_tot-lig |
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if (tmpfe.ne.0. _d 0) then |
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freefe(i,j,k,bi,bj) = tmpfe -FeL |
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else |
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freefe(i,j,k,bi,bj) = 0. _d 0 |
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endif |
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#ifdef MINFE |
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#ifdef AD_SAFE |
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thx=freefe(i,j,k,bi,bj) |
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thy=freefemax |
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theps=1. _d -8 |
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freefe(i,j,k,bi,bj) = |
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& ( 1. _d 0 - tanh((thx-thy)/theps) ) * thx/2.+ |
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& ( 1. _d 0 + tanh((thx-thy)/theps) ) * thy/2. |
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|
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#else |
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freefe(i,j,k,bi,bj) = min(freefe(i,j,k,bi,bj),freefemax) |
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#endif |
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fe(i,j,k,bi,bj) = FeL+freefe(i,j,k,bi,bj) |
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#endif |
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END IF |
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ENDDO |
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ENDDO |
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ENDDO |
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c |
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#endif |
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RETURN |
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END |
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