/[MITgcm]/MITgcm/pkg/dic/bio_export.F
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Annotation of /MITgcm/pkg/dic/bio_export.F

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Revision 1.11 - (hide annotations) (download)
Tue May 1 22:51:12 2007 UTC (17 years, 1 month ago) by stephd
Branch: MAIN
Changes since 1.10: +9 -0 lines
o add compile time flag (PAR_FROMSW) so that PAR needed in dic code
  is taken from Qsw (rather than insol algorithm or read from file).
  Also add some stop statements if silly combinations are attempted.

1 edhill 1.3 #include "DIC_OPTIONS.h"
2 stephd 1.1 #include "GCHEM_OPTIONS.h"
3    
4 stephd 1.5 CBOP
5     C !ROUTINE: BIO_EXPORT
6    
7     C !INTERFACE: ==========================================================
8 stephd 1.1 SUBROUTINE BIO_EXPORT( PTR_PO4 ,
9     #ifdef ALLOW_FE
10     I PTR_FE,
11     #endif
12     I bioac,
13     I bi,bj,imin,imax,jmin,jmax,
14     I myIter,myTime,myThid)
15    
16 stephd 1.5 c !DESCRIPTION:
17     C Calculate biological activity and export
18    
19     C !USES: ===============================================================
20 stephd 1.1 IMPLICIT NONE
21     #include "SIZE.h"
22     #include "DYNVARS.h"
23     #include "EEPARAMS.h"
24     #include "PARAMS.h"
25     #include "GRID.h"
26     #include "DIC_ABIOTIC.h"
27     #include "DIC_BIOTIC.h"
28 stephd 1.11 #ifdef PAR_FROMSW
29     #include "FFIELDS.h"
30     #endif
31 stephd 1.1
32 stephd 1.5 C !INPUT PARAMETERS: ===================================================
33     C myThid :: thread number
34     C myIter :: current timestep
35     C myTime :: current time
36     C PTR_PO4 :: phosphate tracer field
37     C PTR_FE :: iron tracer field
38 stephd 1.1 INTEGER myIter
39     _RL myTime
40     INTEGER myThid
41     _RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
42     #ifdef ALLOW_FE
43     _RL PTR_FE(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
44     #endif
45 stephd 1.5 INTEGER imin, imax, jmin, jmax, bi, bj
46    
47    
48     C !OUTPUT PARAMETERS: ==================================================
49     C bioac :: biological productivity (will be split
50     C between export and dissolved pool)
51 stephd 1.1 _RL bioac(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nR)
52    
53     #ifdef ALLOW_PTRACERS
54     #ifdef DIC_BIOTIC
55 stephd 1.5
56     C !LOCAL VARIABLES: ====================================================
57     C i,j,k :: loop indices
58 stephd 1.1 INTEGER I,J,k
59 stephd 1.5 _RL sfac(1-OLy:sNy+OLy)
60     _RL lit, atten
61 stephd 1.10 _RL nutlimit
62     #ifdef AD_SAFE
63     _RL thx, thy, theps
64     #endif
65 stephd 1.5 CEOP
66 stephd 1.10
67    
68 stephd 1.8 #ifndef READ_PAR
69 stephd 1.11 #ifndef PAR_FROMSW
70 stephd 1.1 call insol(myTime,sfac,bj)
71 stephd 1.8 #endif
72 stephd 1.11 #endif
73 stephd 1.9 DO j=jmin,jmax
74     DO i=imin,imax
75 stephd 1.2 C Fortran-90
76     CRG C$TAF INIT bio_export = static, nlev
77     C FORTRAN-77 dynamic memory uses adstore adresto
78     CRG C$TAF INIT bio_export = memory
79     C FORTRAN-77 with know max of nlev
80     C$TAF INIT bio_export = static, 10
81 stephd 1.8 #ifdef READ_PAR
82     lit=PAR(i,j,bi,bj)
83     #else
84 stephd 1.11 #ifdef PAR_FROMSW
85     lit=-0.4*Qsw(i,j,bi,bj)*maskC(i,j,1,bi,bj)
86     #else
87 stephd 1.1 lit=sfac(j)
88 stephd 1.8 #endif
89 stephd 1.11 #endif
90 stephd 1.1 DO k=1,nlev
91 stephd 1.2 C$TAF STORE lit = bio_export
92 stephd 1.7 atten=(k0*drF(k)*hFacC(i,j,k,bi,bj)*.5)
93     if (k.gt.1) atten=atten+(k0*drF(k-1)
94     & *hFacC(i,j,k-1,bi,bj)*.5)
95 stephd 1.1 lit=lit*exp(-atten)*(1.d0-Fice(i,j,bi,bj))
96     if (lit.lt.0.d0.or.lit.gt.150) then
97     print*,'QQ lit', lit
98     endif
99 stephd 1.10
100 stephd 1.1 #ifdef ALLOW_FE
101 stephd 1.10 #ifdef AD_SAFE
102     thx = PTR_PO4(i,j,k)/(PTR_PO4(i,j,k)+KPO4)
103     thy = PTR_FE(i,j,k)/(PTR_FE(i,j,k)+KFE)
104     theps = 1.d-6
105     nutlimit= ( 1.d0 - tanh((thx-thy)/theps) ) * thx/2 +
106     & ( 1.d0 + tanh((thx-thy)/theps) ) * thy/2
107 stephd 1.5 #else
108 stephd 1.10 nutlimit= min(PTR_PO4(i,j,k)/(PTR_PO4(i,j,k)+KPO4),
109     & PTR_FE(i,j,k)/(PTR_FE(i,j,k)+KFE) )
110 stephd 1.1 #endif
111 stephd 1.10 #else
112     nutlimit= PTR_PO4(i,j,k)/(PTR_PO4(i,j,k)+KPO4)
113     #endif
114    
115     bioac(i,j,k)=alpha(i,j,bi,bj)*
116     & lit/(lit+lit0)*maskC(i,j,k,bi,bj)*
117     & nutlimit
118 stephd 1.1 ENDDO
119     ENDDO
120     ENDDO
121     c
122     #endif
123     #endif
124     RETURN
125     END

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