pkg/dic/fe_chem.F

C $Header: /u/gcmpack/MITgcm/pkg/dic/fe_chem.F,v 1.8 2005/12/16 21:07:53 stephd Exp $
C $Name:  $

#include "DIC_OPTIONS.h"
#include "GCHEM_OPTIONS.h"

CStartOfInterFace
      SUBROUTINE Fe_CHEM(
     I           bi,bj,iMin,iMax,jMin,jMax,
     I           fe, freefe,
     I           myIter, myThid )
C     /==========================================================\
C     | SUBROUTINE Fe_chem                                       |
C     |                                                          |
C     | o Calculate L,FeL,Fe concentration                       |
C     |==========================================================|
      IMPLICIT NONE

C     == GLobal variables ==
#include "SIZE.h"
#include "DYNVARS.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
#include "DIC_BIOTIC.h"

C     == Routine arguments ==                
C     bi, bj, iMin, iMax, jMin, jMax - Range of points for which calculation
C                                      results will be set.
C     myThid - Instance number for this innvocation of CALC_GT
      _RL  freefe(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
      _RL  fe(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
      INTEGER bi,bj,iMin,iMax,jMin,jMax
      INTEGER myIter,myThid
#ifdef AD_SAFE
      _RL thx, thy, theps
#endif
CEndOfInterface

#ifdef ALLOW_FE

      INTEGER I,J,K
      _RL  lig, FeL

CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
CC
CC ADAPTED FROM PAYAL
CC
CC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc

C ligand balance in surface layer
C in surface layer

       DO j=jmin,jmax
        DO i=imin,imax
         DO k=1,nR
          IF(hFacC(i,j,k,bi,bj) .gt. 0.0)THEN

C   Ligand,FeL,Fe calculation
            
              lig=(-ligand_stab*fe (i,j,k,bi,bj)+
     &              ligand_stab*ligand_tot-1
     &             +((ligand_stab*fe (i,j,k,bi,bj)
     &                -ligand_stab*ligand_tot+1)**2+4
     &                *ligand_stab*ligand_tot)**0.5)/(2*ligand_stab)
 
              FeL = ligand_tot-lig
              freefe(i,j,k,bi,bj) = fe (i,j,k,bi,bj)-FeL
#ifdef MINFE
#ifdef AD_SAFE
              thx=freefe(i,j,k,bi,bj)
              thy=freefemax
              theps=1.d-8
              freefe(i,j,k,bi,bj) =
     &                 ( 1.d0 - tanh((thx-thy)/theps) ) * thx/2 +
     &                 ( 1.d0 + tanh((thx-thy)/theps) ) * thy/2

#else
              freefe(i,j,k,bi,bj) = min(freefe(i,j,k,bi,bj),freefemax)
#endif
              fe(i,j,k,bi,bj) = FeL+freefe(i,j,k,bi,bj)
#endif
          END IF  
         ENDDO
        ENDDO
       ENDDO    
c
#endif 
        RETURN
        END                      
1	C $Header: /u/gcmpack/MITgcm/pkg/dic/fe_chem.F,v 1.8 2005/12/16 21:07:53 stephd Exp $
2	C $Name: $
3
4	#include "DIC_OPTIONS.h"
5	#include "GCHEM_OPTIONS.h"
6
7	CStartOfInterFace
8	SUBROUTINE Fe_CHEM(
9	I bi,bj,iMin,iMax,jMin,jMax,
10	I fe, freefe,
11	I myIter, myThid )
12	C /==========================================================\
13	C \| SUBROUTINE Fe_chem \|
14	C \| \|
15	C \| o Calculate L,FeL,Fe concentration \|
16	C \|==========================================================\|
17	IMPLICIT NONE
18
19	C == GLobal variables ==
20	#include "SIZE.h"
21	#include "DYNVARS.h"
22	#include "EEPARAMS.h"
23	#include "PARAMS.h"
24	#include "GRID.h"
25	#include "DIC_BIOTIC.h"
26
27	C == Routine arguments ==
28	C bi, bj, iMin, iMax, jMin, jMax - Range of points for which calculation
29	C results will be set.
30	C myThid - Instance number for this innvocation of CALC_GT
31	_RL freefe(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
32	_RL fe(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
33	INTEGER bi,bj,iMin,iMax,jMin,jMax
34	INTEGER myIter,myThid
35	#ifdef AD_SAFE
36	_RL thx, thy, theps
37	#endif
38	CEndOfInterface
39
40	#ifdef ALLOW_FE
41
42	INTEGER I,J,K
43	_RL lig, FeL
44
45	CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
46	CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
47	CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
48	CC
49	CC ADAPTED FROM PAYAL
50	CC
51	CC
52	CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
53	CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
54	CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc
55
56	C ligand balance in surface layer
57	C in surface layer
58
59	DO j=jmin,jmax
60	DO i=imin,imax
61	DO k=1,nR
62	IF(hFacC(i,j,k,bi,bj) .gt. 0.0)THEN
63
64	C Ligand,FeL,Fe calculation
65
66	lig=(-ligand_stab*fe (i,j,k,bi,bj)+
67	& ligand_stab*ligand_tot-1
68	& +((ligand_stab*fe (i,j,k,bi,bj)
69	& -ligand_stabligand_tot+1)*2+4
70	& ligand_stabligand_tot)*0.5)/(2ligand_stab)
71
72	FeL = ligand_tot-lig
73	freefe(i,j,k,bi,bj) = fe (i,j,k,bi,bj)-FeL
74	#ifdef MINFE
75	#ifdef AD_SAFE
76	thx=freefe(i,j,k,bi,bj)
77	thy=freefemax
78	theps=1.d-8
79	freefe(i,j,k,bi,bj) =
80	& ( 1.d0 - tanh((thx-thy)/theps) ) * thx/2 +
81	& ( 1.d0 + tanh((thx-thy)/theps) ) * thy/2
82
83	#else
84	freefe(i,j,k,bi,bj) = min(freefe(i,j,k,bi,bj),freefemax)
85	#endif
86	fe(i,j,k,bi,bj) = FeL+freefe(i,j,k,bi,bj)
87	#endif
88	END IF
89	ENDDO
90	ENDDO
91	ENDDO
92	c
93	#endif
94	RETURN
95	END